Jing Zhang

This review presents a comprehensive overview of recent progress on the modulation and enhancement strategies for the SHG response of 2DLMs. Then, the remaining challenges and outlooks toward further extending and realizing the practical multifunctional applications of 2DLMs in nonlinear on-chip integrated devices with SHG modulation and enhancement characteristics are discussed.

Abstract

Second harmonic generation (SHG) as an essential nonlinear optical effect, has gradually shifted its research trend toward the integration and miniaturization of photonic and optoelectronic on-chip devices in recent years. 2D layered materials (2DLMs) open up a new research paradigm of nonlinear optics due to their large second-order susceptibility, atomically thin structure, and perfect phase-matching. However, 2DLMs are facing a bottleneck of weak SHG conversion efficiency limit caused by short light–matter interaction lengths at a nanoscale. Moreover, advances in integrated on-chip SHG devices based on 2DLMs rely on the continuing development of novel strategies with tunable and efficient SHG responses. Here, this review provides a comprehensive overview of recent progress in exploring highly efficient and tunable SHG responses in 2DLMs. Various modulation and enhancement strategies for the SHG response of 2DLMs are extensively studied and systematically discussed, which can be classified into two categories: symmetry breaking and light-matter interaction enhancement. Moreover, remaining challenges and outlooks toward further extending and realizing the practical applications of 2DLMs in nonlinear on-chip integrated devices with SHG modulation and enhancement characteristics are discussed.

A high-performance electrocatalytic nitrogen reduction reaction (NRR) catalyst fabricated by depositing tiny CeO₂ nanoparticles with electronenriched oxygen vacancies on the surface of ultra-thin MoN nanosheets via a molten-salt approach. Specifically, a considerably high NH3 yield rate of 27.5 µg h⁻¹ mg⁻¹ with 17.2% faradaic efficiency (FE) can be achieved at -0.3 V versus (RHE), which is nearly 4.2 times higher than that of bare MoN.

Abstract

Electrocatalytic nitrogen reduction reaction (NRR) paves a sustainable way to produce NH₃ but suffering from the relatively low NH₃ yield and poor selectivity. High-performance NRR catalysts and a deep insight into the structure-performance relationship are higher desired. Herein, a molten-salt approach is developed to synthesize tiny CeO₂ nanoparticles anchored by ultra-thin MoN nanosheets as advanced catalysts for NRR. Specifically, a considerably high NH₃ yield rate of 27.5 µg h⁻¹ mg⁻¹ with 17.2% Faradaic efficiency (FE) can be achieved at -0.3 V vs (RHE) under ambient conditions. Experimental and density functional theory (DFT) calculations further point out that the incorporation of MoN with CeO₂ can promotes the enlargement of the electron deficient area of nitrogen vacancy site. The enlarged electron deficient area contributes to the accommodation of lone pair electrons of N₂, which dramatically improves the N₂ adsorption/activation and the key intermediates (*NNH and *NH₃) generation, thus boosting the NRR performance.

For sake of practical application, an efficient surface defect restoring strategy via InCl₃-assist is developed to optimize the particle morphology and improve the luminescence properties of the blue-emitting lead-free Cs₂ZrCl₆ NCs for X-ray imaging and blue LED. Moreover, the restored type of the defects is clarified by combining comprehensive experimental and theoretical analysis.

Abstract

As one type of recent emerging lead-free perovskites, Cs₂ZrCl₆ nanocrystals are widely concerned, benefiting from the eminent designability, high X-ray cutoff efficiency, and favorable stability. Improving the luminescence performance of Cs₂ZrCl₆ nanocrystals has great importance to cater for practical applications. In view of the surface defects frequently formed by the liquid phase method, the particle morphology and surface quality of this material are expected to be regulated if certain intervention is made in the synthesis process. In the work, differing from normal cell lattice modulation based on the ion doping, the grain size and surface morphology of Cs₂ZrCl₆ nanocrystals are optimized via adding a certain amount of InCl₃ to the synthetic solution. The surface defects are restored to inhibit the defect-induced non-radiative transition, resulting in the improvement of the luminescence properties. Moreover, a flexible Cs₂ZrCl₆@polydimethylsiloxane film with excellent heat, water, and bending resistance and a light-emitting diode (LED) device are fabricated, exhibiting excellent application potential for X-ray imaging and blue LED.

MXenes and also their self-modification have been widely used in gas sensors. This article reviews the main synthesis methods of MXenes materials, with a focus on summarizing and organizing the latest research results of MXenes in gas sensing applications. Finally, this article delves into the problems and upcoming challenges of MXenes materials used for gas sensing.

Abstract

The detection of toxic, harmful, explosive, and volatile gases cannot be separated from gas sensors, and gas sensors are also used to monitor the greenhouse effect and air pollution. However, existing gas sensors remain with many drawbacks, such as lower sensitivity, lower selectivity, and unstable room temperature detection. Thus, there is an imperative need to find more suitable sensing materials. The emergence of a new 2D layered material MXenes has brought dawn to solve this problem. The multiple advantages of MXenes, namely high specific surface area, enriched terminal functionality groups, hydrophilicity, and good electrical conductivity, make them among the most prolific gas-sensing materials. Therefore, this review paper describes the current main synthesis methods of MXenes materials, and focuses on summarizing and organizing the latest research results of MXenes in gas sensing applications. It also introduces the possible gas sensing mechanisms of MXenes materials on NH₃, NO₂, CH₃, and volatile organic compounds (VOCs). In conclusion, it provides insight into the problems and upcoming challenges of MXenes materials for gas sensing.

Silicon Nanocrystals

In article number 2303464, Dongzhi Chen and co-workers report a hydrophilic, liquid-phase dispersed, undoped silicon nanocrystals (UA-SiNCs) simultaneously exhibiting stable photoluminescence and long-lived phosphorescence at room temperature. Silicon core and surface groups of the UA-SiNCs play a crucial role in the multiple-modal emissions, which are advantageous to future advanced anti-counterfeiting, and information encryption/decryption applications.

Colloidal Quantum Dots

pH tunable assembly of multi-color colloidal quantum dots over functional patterns prepared by electrohydrodynamic jet printing of poly(2-vinylpyridine) inks enables hierarchical encoding of information at multiple levels through deterministic and stochastic pathways. More details can be found in article number 2305237 by Moonsub Shim, M. Serdar Onses, and co-workers.

Nearly atom-layered MoS₂ nanosheets (ALMS) is synthesized by a facile and scalable solvent-free mechanochemical approach employing graphene quantum dots as exfoliation agents. ALMS catalyst exhibits excellent electrochemical performance in the hydrogen evolution reaction and exceptional long-term durability. The impressive yield of ALMS reached 63%, indicating its potential for scalable production of stable nanosheets.

Abstract

The development of advanced and efficient synthetic methods is pivotal for the widespread application of 2D materials. In this study, a facile and scalable solvent-free mechanochemical approach is approached, employing graphene quantum dots (GQDs) as exfoliation agents, for the synthesis and functionalization of nearly atom-layered MoS₂ nanosheets (ALMS). The resulting ALMS exhibits an ultrathin average thickness of 4 nm and demonstrates high solvent stability. The impressive yield of ALMS reached 63%, indicating its potential for scalable production of stable nanosheets. Remarkably, the ALMS catalyst exhibits excellent HER performance. Moreover, the ALMS catalyst showcases exceptional long-term durability, maintaining stable performance for nearly 200 h, underscoring its potential as a highly efficient and durable electrocatalyst. Significantly, the catalytic properties of ALMS are significantly influenced by ball milling production conditions. The GQD-assisted large-scale machinery synthesis pathway provides a promising avenue for the development of efficient and high-performance ultrathin 2D materials.

Nature Physics, Published online: 10 January 2024; doi:10.1038/s41567-023-02312-z

Realizing robust ferromagnetic order in two dimensions is challenging as an underlying crystalline framework is normally required. Now room-temperature ferromagnetism is demonstrated in a two-dimensional honeycomb self-assembly of confined molecules.

Nature Electronics, Published online: 10 January 2024; doi:10.1038/s41928-023-01107-7

A biomimetic olfactory system that integrates nanotube sensor arrays with up to 10,000 individually addressable sensors per chip can offer high sensitivity to various gases with excellent distinguishability for mixed gases and 24 distinct odours.

A facile strategy is described to achieve a high-performance narrow dual-band circular polarized photodetector via combining light-driven cholesteric liquid crystal films with a photodiode-type photodetector. A super-high dissymmetry factor of 1.62, left-handed circularly polarized light detectivity of 6.16 × 10¹⁴ Jones, and narrow dual-band circularly polarized light detection, changing from 535 to 725 nm, with a half-maximum full width of less than 90 nm is realized.

Abstract

Conventional circularly polarized light (CPL) detectors necessitate several optical elements, posing difficulties in achieving miniature and integrated devices. Recently developed organic CPL detectors require no additional optical elements but usually suffer from low detectivity or low asymmetry factor (g-factor). Here, an organic CPL detector with excellent detectivity and a high g-factor is fabricated. By employing an inverted quasi-planar heterojunction (IPHJ) structure and incorporating an additional liquid crystal film, a CPL detector with an outstanding g-factor of 1.62 is developed. Unfavorable charge injection is effectively suppressed by the IPHJ structure, which reduces the dark current of the organic photodetector. Consequently, a left CPL detectivity of 6.16 × 10¹⁴ Jones at 640 nm is realized, surpassing all of the latest photodiode-type CPL detectors. Adopting a liquid crystal film with adjustable wavelengths of selectively reflected light, the hybrid device achieves narrow dual-band CPL detection, varying from 530 to 640 nm, with a half-maximum full width below 90 nm. Notably, the device achieves excellent stability of 260 000 on/off cycles without attenuation. To the best of the authors’ knowledge, all these features have rarely been reported in previous work. The CPL detector arrays are also demonstrated for encrypted communications and color imaging.

3D printed electronic skin is fabricated utilizing triple crosslinked nanoengineered hydrogels with tunable mechanical properties with electronic and thermal sensing capabilities. The engineered e-skin is flexible, moldable, stretchable, and adhesive and holds significant promise in electronic wearable skin, soft robotics, and actuators.

Abstract

Electronic skin (E-skin) that can mimic the flexibility and stretchability of human skin with sensing capabilities, holds transformative potential in robotics, wearable technology, and healthcare. However, developing E-skin poses significant challenges such as creating durable materials with skin-like flexibility, integrating biosensing abilities, and using advanced fabrication techniques for wearable or implantable applications. To overcome these hurdles, a 3D-printed electronic skin utilizing a novel class of nanoengineered hydrogels with tunable electronic and thermal biosensing capabilities is fabricated. This methodology takes advantage of the shear–thinning behavior in hydrogel precursors, allowing to construct intricate 2D and 3D electronic structures. The elasticity of skin using triple crosslinking in a robust fungal exopolysaccharide, and pullulan is simulated, while defect-rich 2D molybdenum disulfide (MoS₂) nanoassemblies ensure high electrical conductivity. The addition of polydopamine nanoparticles enhances adhesion to wet tissue. The hydrogel exhibits outstanding flexibility, stretchability, adhesion, moldability, and electrical conductivity. A distinctive feature of this technology is the precise detection of dynamic changes in strain, pressure, and temperature. As a human motion tracker, phonatory-recognition platform, flexible touchpad, and thermometer, this technology represents a breakthrough in flexible wearable skins and holds transformative potential for the future of robotics and human-machine interfaces.

2D Ferromagnets

In article number 2309046, Zdenek Sofer, Lakshminarayana Polavarapu, Stefanos Mourdikoudis, and co-workers delve into the multiple aspects of ferromagnetic elements in 2D materials, the prospects of forming next-generation 2D magnets, and their capabilities apart from their magnetic nature. The discussion over the valuable properties derived from such elements aims to unfold the numerous benefits that enable their implementation in multifold and diverse applications.

Silicon-based spin quantum bits (qubits) have emerged as a promising platform for large-scale quantum computing due to their compatibility with the semiconductor fabrication technology. This review covers the latest developments of spin qubits in various gate-defined semiconducting nanostructures made of silicon and germanium, and highlights strategies for enhancing qubit performance, such as designing new nanostructures and identifying suitable operating points.

Abstract

Quantum computing offers the potential to revolutionize information processing by exploiting the principles of quantum mechanics. Among the diverse quantum bit (qubit) technologies, silicon-based semiconductor spin qubits have emerged as a promising contender due to their potential scalability and compatibility with existing semiconductor technologies. In this paper, the latest developments of spin qubits in gate-defined semiconducting nanostructures made of silicon and germanium, starting from the basic properties of electron and hole states in group-IV semiconductors, are reviewed. Specifically, various nanostructures that exploit their unique microscopic properties for qubit implementations, elaborating on the advances and challenges in experiments, are discussed. Strategies for enhancing qubit performance, such as designing new nanostructures and identifying suitable operating points, particularly those involving the valleys of electron qubits and the heavy-hole–light-hole mixing of hole qubits, are also highlighted. This comprehensive review thus provides valuable insights into the current state-of-the-art in semiconductor quantum computing and suggests avenues for future research.

Nature Nanotechnology, Published online: 10 January 2024; doi:10.1038/s41565-023-01582-1

Pre-adsorption of water molecules on a material surface, followed by assembly of a van der Waals (vdW) structure, provides a vdW water gap with a height that can be precisely tuned through variation of the amount of water adsorbed at the interface. This approach is applicable to different two-dimensional and even three-dimensional homo- and heterojunctions.

Biomedical implants are widely used therapeutic tools for many diseases. However, most implants suffer from the foreign body reaction elicited by the host immune system, which compromises implant functionality and longevity. This review reveals the complex relationship between implant physiochemical properties and foreign body reaction, and provides a comprehensive theoretical framework for designing and fabricating biomedical implants in the future.

Abstract

Foreign body reaction (FBR) is a prevalent yet often overlooked pathological phenomenon, particularly within the field of biomedical implantation. The presence of FBR poses a heavy burden on both the medical and socioeconomic systems. This review seeks to elucidate the protein “fingerprint” of implant materials, which is generated by the physiochemical properties of the implant materials themselves. In this review, the activity of macrophages, the formation of foreign body giant cells (FBGCs), and the development of fibrosis capsules in the context of FBR are introduced. Additionally, the relationship between various implant materials and FBR is elucidated in detail, as is an overview of the existing approaches and technologies employed to alleviate FBR. Finally, the significance of implant components (metallic materials and non-metallic materials), surface CHEMISTRY (charge and wettability), and physical characteristics (topography, roughness, and stiffness) in establishing the protein “fingerprint” of implant materials is also well documented. In conclusion, this review aims to emphasize the importance of FBR on implant materials and provides the current perspectives and approaches in developing implant materials with anti-FBR properties.

Nature Physics, Published online: 09 January 2024; doi:10.1038/s41567-023-02304-z

Cells actively rearrange their cytoplasmic machinery to perform diverse functions. Now, friction forces generated between cytoplasmic components provide a physical basis for cell shape change.

Nature Physics, Published online: 09 January 2024; doi:10.1038/s41567-023-02302-1

Friction forces at the interface between tissues play a key role in tissue morphogenesis. Now friction at the cellular scale is shown to influence cell shape and cell rearrangements.

The novel confined interfacial chalcogenization (CIC) method to develop robust transition metal dichalcogenides (TMDs) possessing an ultraclean interface with a metal presents a promising alternative to conventional chemical vapor deposition (CVD). CIC-TMDs overcome limitations associated with CVD such as defects, doping impurities, and degradation, thus proving to be versatile for the development of memristors for electronic devices.

Abstract

Acquisition of defect-free transition metal dichalcogenides (TMDs) channels with clean heterojunctions is a critical issue in the production of TMD-based functional electronic devices. Conventional approaches have transferred TMD onto a target substrate, and then apply the typical device fabrication processes. Unfortunately, those processes cause physical and chemical defects in the TMD channels. Here, a novel synthetic process of TMD thin films, named confined interfacial chalcogenization (CIC) is proposed. In the proposed synthesis, a uniform TMDlayer is created at the Au/transition metal (TM) interface by diffusion of chalcogen through the upper Au layer and the reaction of chalcogen with the underlying TM. CIC allows for ultraclean heterojunctions with the metals, synthesis of various homo- and hetero-structured TMDs, and in situ TMD channel formation in the last stage of device fabrication. The mechanism of TMD growth is revealed by the TM-accelerated chalcogen diffusion, epitaxial growth of TMD on Au(111). We demonstrated a wafer-scale TMD-based vertical memristors which exhibit excellent statistical concordance in device performance enabled by the ultraclean heterojunctions and superior uniformity in thickness. CIC proposed in this study represents a breakthrough in in TMD-based electronic device fabrication and marking a substantial step toward practical next-generation integrated electronics.

Given the vast amount of research in the field of flat bands, cataloging high-quality 2D van der Waals (vdW) materials with flat bands, which provide cleaner lattice models, easier experimental verification, and higher tunability, makes the 2D vdW system an ideal playground for exploring flat-band physics and its potential applications.

Abstract

Benefited from the lower dimensionality compared to their 3D counterpart, 2D flat-band systems provide cleaner lattice models, easier experimental verification, and higher tunability, which make the 2D van der Waals (vdW) system an ideal playground for exploring flat-band physics as well as their potential applications. Given the vast amount of research in the field of flat bands, a simple and efficient approach to search for realistic vdW materials with flat bands is still missing. Here, a two-tier framework to filter and diagnose high-quality flat-band vdW materials by combining high-throughput first-principles calculations and the proposed 2D flat-band score criterion is presented. Based on systematic geometrical analysis, 861 potential monolayer vdW materials are initially obtained amounting to 187,093 structures as stored in the Inorganic Crystal Structure Database. By applying the 2D flat-band score criterion, 229 flat-band candidates are efficiently identified, among which a sub-catalog of 74 materials with flat bands right next to the Fermi level is further provided to facilitate experimental verification. All these efforts to screen experimentally available flat-band candidates will certainly motivate continuing exploration toward the realization of this class of special materials and their applications in material science.

Nature Communications, Published online: 06 January 2024; doi:10.1038/s41467-023-44293-w

In high-dimensional multistable mechanical metamaterials, phase transitions can be remotely nucleated and controlled via collisions of nonlinear pulses, potentially bringing new insights for the design of reconfigurable structures.

A flexible, biodegradable bioelectronic paper featuring homogeneously distributed wireless stimulation functionality is presented. This paper synergistically combines lead-free magnetoelectric nanoparticles for external magnetic field-induced electrical stimulation and flexible, biodegradable nanofibers for high-selectivity stimulation, oxygen/nutrient permeation, cell orientation modulation, and biodegradation rate control. Scalability, design flexibility, and rapid customizability are demonstrated through simple paper crafting techniques such as origami and kirigami.

Abstract

Bioelectronic implants delivering electrical stimulation offer an attractive alternative to traditional pharmaceuticals in electrotherapy. However, achieving simple, rapid, and cost-effective personalization of these implants for customized treatment in unique clinical and physical scenarios presents a substantial challenge. This challenge is further compounded by the need to ensure safety and minimal invasiveness, requiring essential attributes such as flexibility, biocompatibility, lightness, biodegradability, and wireless stimulation capability. Here, a flexible, biodegradable bioelectronic paper with homogeneously distributed wireless stimulation functionality for simple personalization of bioelectronic implants is introduced. The bioelectronic paper synergistically combines i) lead-free magnetoelectric nanoparticles (MENs) that facilitate electrical stimulation in response to external magnetic field and ii) flexible and biodegradable nanofibers (NFs) that enable localization of MENs for high-selectivity stimulation, oxygen/nutrient permeation, cell orientation modulation, and biodegradation rate control. The effectiveness of wireless electrical stimulation in vitro through enhanced neuronal differentiation of neuron-like PC12 cells and the controllability of their microstructural orientation are shown. Also, scalability, design flexibility, and rapid customizability of the bioelectronic paper are shown by creating various 3D macrostructures using simple paper crafting techniques such as cutting and folding. This platform holds promise for simple and rapid personalization of temporary bioelectronic implants for minimally invasive wireless stimulation therapies.

Herein a novel sensing strategy is proposed to achieve Terahertz refractive sensing and fingerprint recognition within a continuous spectrum based on the coupling of surface waves. By covering 5 µm thickness of polyimide, quartz, and silicon nitride layers, the phase change of 91.1°, 101.8°, and 126.4° is experimentally obtained, respectively.

Abstract

High-sensitive metasurface-based sensors are essential for effective substance detection and insightful bio-interaction studies, which compress light in subwavelength volumes to enhance light–matter interactions. However, current methods to improve sensing performance always focus on optimizing near-field response of individual meta-atom, and fingerprint recognition for bio-substances necessitates several pixelated metasurfaces to establish a quasi-continuous spectrum. Here, a novel sensing strategy is proposed to achieve Terahertz (THz) refractive sensing, and fingerprint recognition based on surface waves (SWs). Leveraging the long-range transmission, strong confinement, and interface sensitivity of SWs, a metasurface-supporting SWs excitation and propagation is experimentally verified to achieve sensing integrations. Through wide-band information collection of SWs, the proposed sensor not only facilitates refractive sensing up to 215.5°/RIU, but also enables the simultaneous resolution of multiple fingerprint information within a continuous spectrum. By covering 5 µm thickness of polyimide, quartz and silicon nitride layers, the maximum phase change of 91.1°, 101.8°, and 126.4° is experimentally obtained within THz band, respectively. Thus, this strategy broadens the research scope of metasurface-excited SWs and introduces a novel paradigm for ultrasensitive sensing functions.

To solve the problem of mismatch at the dielectric–conductive layer interface in green electronics, this study utilizes dynamic covalent chemistry to synthesize a tough monolithic-integrated triboelectric bioplastic. The triboelectric bioplastic has tensile strength (87.4 MPa) and toughness (33.3 MJ m⁻³) and is noncracking after being subjected to a tensile force of 10 000 times its own weight.

Abstract

Electronic waste is a growing threat to the global environment and human health, raising particular concerns. Triboelectric devices synthesized from sustainable and degradable materials are a promising electronic alternative, but the mechanical mismatch at the interface between the polymer substrate and the electrodes remains unresolved in practical applications. This study uses the sulfhydryl silanization reaction and the chemical selectivity and site specificity of the thiol–disulfide exchange reaction in dynamic covalent chemistry to prepare a tough monolithic-integrated triboelectric bioplastic. The stress is dissipated by covalent bond adaptation to the interface interaction, which makes the polymer dielectric layer to the conductive layer have a good interface adhesion effect (220.55 kPa). The interfacial interlocking of the polymer substrate with the conductive layer gives the triboelectric bioplastic excellent tensile strength (87.4 MPa) and fracture toughness (33.3 MJ m⁻³). Even when subjected to a tension force of 10 000 times its weight, it still maintains a stable triboelectric output with no visible cracks. This study provides new insights into the design of reliable and environmentally friendly self-powered devices, which is significant for the development of flexible wearable electronics.

Antiferromagnetic spintronics has gained remarkable development in recent years. In this Perspective, the latest research progress in this field is reviewed. It is emphasized that, distinct from ferromagnets, the richness in complex antiferromagnetic crystal structures is the unique and essential virtue of antiferromagnets that can endow them with exotic properties for spintronics.

Abstract

Antiferromagnets constitute promising contender materials for next-generation spintronic devices with superior stability, scalability, and dynamics. Nevertheless, the perception of well-established ferromagnetic spintronics underpinned by spontaneous magnetization seemed to indicate the inadequacy of antiferromagnets for spintronics—their compensated magnetization has been perceived to result in uncontrollable antiferromagnetic order and subtle magnetoelectronic responses. However, remarkable advancements have been achieved in antiferromagnetic spintronics in recent years, with consecutive unanticipated discoveries substantiating the feasibility of antiferromagnet-centered spintronic devices. It is emphasized that, distinct from ferromagnets, the richness in complex antiferromagnetic crystal structures is the unique and essential virtue of antiferromagnets that can open up their endless possibilities of novel phenomena and functionality for spintronics. In this Perspective, the recent progress in antiferromagnetic spintronics is reviewed, with a particular focus on that based on several kinds of antiferromagnets with special antiferromagnetic crystal structures. The latest developments in efficiently manipulating antiferromagnetic order, exploring novel antiferromagnetic physical responses, and demonstrating prototype antiferromagnetic spintronic devices are discussed. An outlook on future research directions is also provided. It is hoped that this Perspective can serve as guidance for readers who are interested in this field and encourage unprecedented studies on antiferromagnetic spintronic materials, phenomena, and devices.

The introduction of SnS₂ regulates the proportion of pyrite and marcasite phase in FeS₂, which not only inhibits the formation of marcasite FeS₂ with the inferior electrochemical activity, but also constructs the triphasic heterostructures to accelerate the reaction kinetics and mitigate the interfacial passivation, thereby achieving the excellent sodium storage performances both in half- and full-cells.

Abstract

Transition metal sulfides (TMSs) still confront the challenges of capacity fading and inferior fast-charging capability for sodium storage. The rational design of heterostructures enables a new approach to conquer these drawbacks. In this work, a hierarchical structure consisting of SnS₂ nanosheets and FeS₂ microrods with triphasic heterostructures is proposed by the facile secondary growth and sulfidation process. The introduction of tin sources regulates the proportion of pyrite and marcasite phases, thereby achieving the triphasic heterostructures comprising pyrite, marcasite FeS_2, and SnS₂. When served as anode material for sodium-ion batteries, the optimized sample exhibits a high reversible capacity (901 mAh g⁻¹) and durable cycling performances (827 mAh g⁻¹ after 200 cycles at 1 A g⁻¹ and 742 mAh g⁻¹ after 700 cycles at 5 A g⁻¹). Paring with the commercial Na₃V₂(PO₃)₃ cathodes, the full-cell also delivers extraordinary cyclic stability with a high capacity of 618 mAh g⁻¹ (based on the weight of anode material) after 200 cycles at 1 A g⁻¹ (98.7% capacity retention). The hierarchical structure with adjustably triphasic heterogeneous interfaces alleviates the volumetric expansion and interfacial passivation of active material, while modulating the energy band structure and inducing the build-in electric fields to boost Na⁺/electrons transport rate.