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04 Jul 03:25

Review—Modelling Catalyst Layer Performance in Device-Scale Polymer Electrolyte Membrane Fuel Cell Simulation

by Edmund J. F. Dickinson and Oliver Rodríguez
Theoretical models used to describe the catalyst layers (CLs) in polymer electrolyte membrane fuel cells (PEMFCs) are reviewed, with a focus on continuum treatments as incorporated in device-scale models used to predict and optimise PEMFC operating performance. Consideration is given to the mathematical relationships between CL design properties (Pt/C mass ratio, catalyst loading, ionomer loading), and physical properties. Relevant physical models are summarised, considering couplings between the CL and the phenomena of charge transfer, reactant mass transfer, hydrogen oxidation, and oxygen reduction electrode kinetics, heat transfer, and water balance. The relevance of thin film methods (through-thickness homogenisation) is compared to those resolving the macroscopic depth of the CL. Specific continuum homogenisations of microstructural models incorporating CL transport limitations in a continuum treatment, such as the agglomerate model, are discussed.
04 Aug 11:11

Integrated CO2 capture and electrochemical upgradation: the underpinning mechanism and techno-chemical analysis

Chem. Soc. Rev., 2023, 52,5744-5802
DOI: 10.1039/D2CS00512C, Review Article
Sandip Kumar De, Dong-Il Won, Jeongwon Kim, Dong Ha Kim
This review systematically outlines the underpinning mechanism and applications involved in electrochemically integrated carbon capture and utilization (CCU) processes together with techno-economic insights.
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24 Jun 07:53

Levelized Cost of Charging Electric Vehicles in the United States

Publication date: 15 July 2020

Source: Joule, Volume 4, Issue 7

Author(s): Brennan Borlaug, Shawn Salisbury, Mindy Gerdes, Matteo Muratori

10 Apr 00:14

[ASAP] Garnet-Type Solid-State Electrolytes: Materials, Interfaces, and Batteries

by Chengwei Wang†¶, Kun Fu†§¶, Sanoop Palakkathodi Kammampata?, Dennis W. McOwen†‡, Alfred Junio Samson?, Lei Zhang†‡, Gregory T. Hitz†‡, Adelaide M. Nolan†, Eric D. Wachsman†‡, Yifei Mo†, Venkataraman Thangadurai*?, and Liangbing Hu*†

TOC Graphic

Chemical Reviews
DOI: 10.1021/acs.chemrev.9b00427
09 Apr 02:36

[ASAP] Mobile Ions in Composite Solids

by Zheyi Zou†?, Yajie Li*†?, Ziheng Lu*‡?, Da Wang*†, Yanhua Cui§, Bingkun Guo?, Yuanji Li†, Xinmiao Liang?, Jiwen Feng?, Hong Li#, Ce-Wen Nang, Michel Armandh, Liquan Chen#, Kang Xu*i, and Siqi Shi*†?
扬帆起航

mobile ion in solide

TOC Graphic

Chemical Reviews
DOI: 10.1021/acs.chemrev.9b00760
09 Dec 01:03

Formation Challenges of Lithium-Ion Battery Manufacturing

Publication date: 18 December 2019

Source: Joule, Volume 3, Issue 12

Author(s): David L. Wood, Jianlin Li, Seong Jin An

David Wood is a Senior Staff Scientist and University of Tennessee Bredesen Center Adjunct Faculty Member at Oak Ridge National Laboratory (ORNL), researching novel electrode architectures, mass transport phenomena, solid-liquid surface chemistry, advanced processing methods, manufacturing science, and materials characterization for low-temperature fuel cells, PEM electrolyzers, and lithium-ion batteries, and has been employed there since 2009. He is also the former ORNL Fuel Cell Technologies Program Manager (2011–2018), the former Roll-to-Roll Manufacturing Team and Group Leader (2015–2017), and a well-known energy conversion and storage researcher with an industrial and academic career that began in 1995. From 1997 to 2002, he was employed by General Motors Corporation and SGL Carbon Group, excelling at applied R&D related to automotive and stationary PEFC technology. Later work (2003–2009) at Los Alamos National Laboratory (LANL) and Cabot Corporation focused on elucidation of key chemical degradation mechanisms, development of accelerated testing methods, and component development. Dr. Wood received his BS in Chemical Engineering from North Carolina State University in 1994, his MS in Chemical Engineering from the University of Kansas in 1998, and his PhD in Electrochemical Engineering from the University of New Mexico in 2007. He was part of two LANL research teams that won the DOE Hydrogen Program R&D Award for outstanding achievement in 2005 and 2009. He was also part of the Cabot Corporation Direct Methanol Fuel Cell team, which won the Samuel W. Bodman Award for Excellence in 2008. Dr. Wood was also the 2011 winner of the ORNL Early Career Award for Engineering Accomplishment and led a team that won both a 2013 R&D 100 award and 2014 Federal Laboratory Consortium (FLC) award with Porous Power Technologies. He has received 19 patents and patent applications, authored 93 refereed journal articles and transactions papers, and authored 2 book chapters.

Jianlin Li is a R&D Staff and University of Tennessee Bredesen Center Adjunct Faculty Member at Oak Ridge National Laboratory (ORNL). His research interest lies in materials synthesis, processing and characterization, electrode engineering, and manufacturing for energy storage and conversion. Dr. Li received his BS in Materials Chemistry and his MS in Materials Science from University of Science and Technology of China in 2001 and 2004, respectively, and his PhD in Materials Science and Engineering from the University of Florida in 2009. He is a recipient of several prestigious awards including two R&D 100 awards and one Federal Laboratory Consortium (FLC) award. He has received 14 patents and patent applications and authored 96 refereed journal articles and 3 book chapters.

Seong Jin An is a Principal Engineer at Samsung Electronics leading rechargeable battery platforms for smartphone applications and has been employed there since late 2017. He had researched solid electrolyte interphase (SEI) in the lithium-ion battery as a guest at Oak Ridge National Laboratory (ORNL) (2014–2017). He worked at Samsung SDI in South Korea as a senior engineer developing PEM fuel cell stacks (2003–2011) and GS Fuel Cell in South Korea developing fuel processors for PEM fuel cell systems (2001–2003). He received his BS in Chemical Engineering from Seoul National University of Science and Technology in 1999, his MS in Chemical Engineering from Yonsei University, Seoul in 2001, his MS in Mechanical Engineering from Carnegie Mellon University, Pittsburgh in 2014, and his PhD in Energy Science & Engineering from University of Tennessee, Knoxville in 2017. He studied PEM fuel cells and lithium-ion batteries with fellowships during his MS and PhD programs. He has received over 200 patents and authored 21 refereed journal articles and transactions papers.

30 Apr 03:00

All-solid-state MoS2/Li6PS5Br/In-Li batteries as a novel type of Li/S battery

扬帆起航

All-solid-state

J. Mater. Chem. A, 2015, 3,10698-10702
DOI: 10.1039/C5TA02372F, Communication
Maohua Chen, Xuesong Yin, M. V. Reddy, Stefan Adams
High-performance all-solid-state lithium/sulfur batteries stably running over 700 high-rate cycles are demonstrated by combining a MoS2 precursor cathode with argyrodite-type solid electrolyte.
The content of this RSS Feed (c) The Royal Society of Chemistry
22 Apr 13:35

N-doped ordered mesoporous carbons prepared by a two-step nanocasting strategy as highly active and selective electrocatalysts for the reduction of O2 to H2O2

Publication date: October 2015
Source:Applied Catalysis B: Environmental, Volumes 176–177
Author(s): Xia Sheng, Nick Daems, Bart Geboes, Mert Kurttepeli, Sara Bals, Tom Breugelmans, Annick Hubin, Ivo F.J. Vankelecom, Paolo P. Pescarmona
A new, two-step nanocasting method was developed to prepare N-doped ordered mesoporous carbon (NOMC) electrocatalysts for the reduction of O2 to H2O2. Our strategy involves the sequential pyrolysis of two inexpensive and readily available N and C precursors, i.e. aniline and dihydroxynaphthalene (DHN), inside the pores of a SBA-15 hard silica template to obtain N-doped graphitic carbon materials with well-ordered pores and high surface areas (764 and 877m2g−1). By tuning the ratio of carbon sources to silica template, it was possible to achieve an optimal filling of the pores of the SBA-15 silica and to minimise carbon species outside the pores. These NOMC materials displayed outstanding electrocatalytic activity in the oxygen reduction reaction, achieving a remarkably enhanced kinetic current density compared to state-of-the-art N-doped carbon materials (−16.7mAcm−2 at −0.35V vs. Ag/AgCl in a 0.1M KOH solution as electrolyte). The NOMC electrocatalysts showed high selectivity toward the two-electron reduction of oxygen to hydrogen peroxide and excellent long-term stability.

Graphical abstract

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