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  • The Electrochemical Society  (7)
  • 2015-2019  (7)
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  • The Electrochemical Society  (7)
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  • 2015-2019  (7)
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  • 1
    Online Resource
    Online Resource
    The Optimization of PEM Fuel Cell Performance Using the CFD Method Combined with Experimental Validation
    The Electrochemical Society ; 2016
    In:  ECS Meeting Abstracts Vol. MA2016-02, No. 38 ( 2016-09-01), p. 2390-2390
    Details
    In: ECS Meeting Abstracts, The Electrochemical Society, Vol. MA2016-02, No. 38 ( 2016-09-01), p. 2390-2390
    Abstract: Abstract: The polymer electrolyte membrane fuel cell (PEMFC) possesses many advantages for both automotive and stationary application, including high energy efficiency, low operating temperature, zero emission, and so on. Aside from the fact that great improvement should be made on its key materials, i.e., the ORR electrocatalysts and proton exchange membrane, it is believed that the PEM fuel cell performance is greatly affected by the operating temperature, gas inlet humidity as well as the flow pattern, and so on [1,2]. Thus, in this work, a 3D steady state model is established to investigate detailedly the effects of the flow pattern (co-flow and counter-flow), the anode and cathode gas inlet relative humidity (RH) on the cell performance. The governing equations of the 3D model result from careful analysis on the electro-chemical reactions, current conservation, membrane proton migration, membrane water transport and water-vapor phase transition. The membrane water transport takes into accounts the electro-osmatic drag and water back diffusion, and the conservation of momentum, species and energy is applied to all components of the PEM fuel cell. Experimental validation is also performed and fits very well with the simulation. Figure 1 shows the current density distribution for different flow patterns: (a), co-flow and (b), counter-flow. The corresponding achievement will offer an efficient guide on the design and performance optimization of PEMFC. Acknowledgements This work was supported in part by National Natural Science Foundation of China (Grant No. 21373135 and 21533005) and Science Foundation of Ministry of Education of China ( Grant No. 413064). References K. Dannenberg, P. Ekdunge, G. Lindbergh, Mathematical model of the PEMFC, Journal of Applied Electrochemistry, 2000, 30: 1377-1387. S.H. Ge, B.L. Yi, A mathematical model for PEMFC in different flow modes, Journal of power sources, 2003, 124: 1-11. Figure 1
    Type of Medium: Online Resource
    ISSN: 2151-2043
    URL: Article
    DOI: 10.1149/MA2016-02/38/2390
    Language: Unknown
    Publisher: The Electrochemical Society
    Publication Date: 2016
    detail.hit.zdb_id: 2438749-6
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  • 2
    Online Resource
    Online Resource
    Communication—An Organic Solvent System-Assisted Electrodeposition of Highly Active Pt for the Oxygen Reduction Reaction
    The Electrochemical Society ; 2018
    In:  Journal of The Electrochemical Society Vol. 165, No. 15 ( 2018), p. J3392-J3394
    Details
    In: Journal of The Electrochemical Society, The Electrochemical Society, Vol. 165, No. 15 ( 2018), p. J3392-J3394
    Type of Medium: Online Resource
    ISSN: 0013-4651 , 1945-7111
    URL: Article
    DOI: 10.1149/2.0531815jes
    RVK:
    VA 4000
    Language: English
    Publisher: The Electrochemical Society
    Publication Date: 2018
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  • 3
    Online Resource
    Online Resource
    Insight into the Effect of Pore-forming on Oxygen Transport Behavior in Ultra-Low Pt PEMFCs
    The Electrochemical Society ; 2019
    In:  Journal of The Electrochemical Society Vol. 166, No. 14 ( 2019), p. F1055-F1061
    Details
    In: Journal of The Electrochemical Society, The Electrochemical Society, Vol. 166, No. 14 ( 2019), p. F1055-F1061
    Type of Medium: Online Resource
    ISSN: 0013-4651 , 1945-7111
    URL: Article
    DOI: 10.1149/2.0501914jes
    RVK:
    VA 4000
    Language: English
    Publisher: The Electrochemical Society
    Publication Date: 2019
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  • 4
    Online Resource
    Online Resource
    Controlled Synthesis of Ptm (M=transition metal) Alloy Nanostructures Via Organic Solvents As High-Performance Oxygen Reduction Reaction Electrocatalysts
    The Electrochemical Society ; 2017
    In:  ECS Meeting Abstracts Vol. MA2017-01, No. 31 ( 2017-04-15), p. 1432-1432
    Details
    In: ECS Meeting Abstracts, The Electrochemical Society, Vol. MA2017-01, No. 31 ( 2017-04-15), p. 1432-1432
    Abstract: Controlled synthesis of PtM (M=transition metal) alloy nanostructures via organic solvents as high-performance oxygen reduction reaction electrocatalysts Shuiyun Shen, Guanghua Wei, Yangge Guo, Fan Li, Junliang Zhang* Institute of Fuel Cells, MOE Key Laboratory of Power & Machinery Engineering, Shanghai Jiao Tong University, Shanghai 200240, China Abstract: It is undoubted that to commercialize the polymer electrolyte membrane fuel cells (PEMFCs), there remains a great challenge to further improve the oxygen reduction reaction (ORR) activity on Pt. It has been proved that alloying Pt with transition metal (Fe, Co, Ni, and so on) will improve not only the activity but also the durability towards the ORR [1]. More importantly, it is also found that crystal plane-oriented PtM alloy nanoparticles or nanostructures show much higher ORR activity and durability [2] . In this work, we propose to synthesize PtM (M=transition metal) alloy electrocatalysts with controlled composition and structures via organic solvents. The as-obtained electrocatalysts will be investigated as the ORR electrocatalyst for PEMFCs. Acknowledgements This work was supported by the National Natural Science Foundation of China (21373135, 21533005 and 21503134), and the Science Foundation of Ministry of Education of China (413064). References [1] Gasteiger, H. A.; Kocha, S. S.; Sompalli, B.; Wagner, F. T., Activity benchmarks and requirements for Pt, Pt-alloy, and non-Pt oxygen reduction catalysts for PEMFCs. Appl Catal B-Environ 2005, 56 (1-2), 9-35. [2]  Chen, C.; Kang, Y.; Huo, Z.; Zhu, Z.; Huang, W.; Xin, H. L.; Snyder, J. D.; Li, D.; Herron, J. A.; Mavrikakis, M.; Chi, M.; More, K. L.; Li, Y.; Markovic, N. M.; Somorjai, G. A.; Yang, P.; Stamenkovic, V. R. Science 2014, 343, 1339-1343.
    Type of Medium: Online Resource
    ISSN: 2151-2043
    URL: Article
    DOI: 10.1149/MA2017-01/31/1432
    Language: Unknown
    Publisher: The Electrochemical Society
    Publication Date: 2017
    detail.hit.zdb_id: 2438749-6
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  • 5
    Online Resource
    Online Resource
    (Invited) Controlled Synthesis of the Ultra-Low-Platinum Electrocatalysts for High-Performance Polymer Electrolyte Membrane Fuel Cell (PEMFC) Cathode
    The Electrochemical Society ; 2018
    In:  ECS Meeting Abstracts Vol. MA2018-01, No. 37 ( 2018-04-13), p. 2183-2183
    Details
    In: ECS Meeting Abstracts, The Electrochemical Society, Vol. MA2018-01, No. 37 ( 2018-04-13), p. 2183-2183
    Abstract: Controlled synthesis of the ultra-low-platinum electrocatalysts for high-performance polymer electrolyte membrane fuel cell (PEMFC) cathode Junliang Zhang*, Liuxuan Luo, Renxiu Tian, Chao Wang, Xiaojing Chen, Guanghua Wei, Shuiyun Shen Institute of Fuel Cells, School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China Abstract: A drastic reduction in the Pt loading of cathodes is urgently desired for the commercialization of polymer electrolyte membrane fuel cells (PEMFCs). The application of ultra-low Pt loading (≦0.1 gPt/kW) cathode comes up with two challenging research topics, one deals with the exploration on the local mass transport surrounding Pt particles in the catalyst layer, and the other involves in controlled synthesis of ultra-low Pt electrocatalysts. Herein, effective strategies have been developed to synthesize a series of ultra-low Pt electrocatalysts with both controlled compositions and structures, and investigated as the oxygen reduction reaction (ORR) electrocatalyst. The corresponding synthetic mechanisms and key influences on the catalytic activity, electrochemical stability as well as utilization toward the ORR are comprehensively elucidated. It is believed that the discussion will provide a solid scientific guideline for the development of ultra-low Pt PEMFCs. Acknowledgements This work was supported in part by National Natural Science Foundation of China (Grant No. 21533005 and 21373135) and the National Key Research and Development Program of China (2016YFB0101201 and 2016YFB0101312). *Corresponding author. Tel.: (+86) 213420 7439; fax: (+86) 21 3420 6249. E-mail: junliang.zhang@sjtu.edu.cn
    Type of Medium: Online Resource
    ISSN: 2151-2043
    URL: Article
    DOI: 10.1149/MA2018-01/37/2183
    Language: Unknown
    Publisher: The Electrochemical Society
    Publication Date: 2018
    detail.hit.zdb_id: 2438749-6
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  • 6
    Online Resource
    Online Resource
    Respective Influence of Ionomer Content on Local and Bulk Oxygen Transport Resistance in the Catalyst Layer of PEMFCs with Low Pt Loading
    The Electrochemical Society ; 2019
    In:  Journal of The Electrochemical Society Vol. 166, No. 4 ( 2019), p. F239-F245
    Details
    In: Journal of The Electrochemical Society, The Electrochemical Society, Vol. 166, No. 4 ( 2019), p. F239-F245
    Type of Medium: Online Resource
    ISSN: 0013-4651 , 1945-7111
    URL: Article
    DOI: 10.1149/2.0401904jes
    RVK:
    VA 4000
    Language: English
    Publisher: The Electrochemical Society
    Publication Date: 2019
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  • 7
    Online Resource
    Online Resource
    The Investigation of Flow Channel Design on the Performance of PEM Fuel Cell
    The Electrochemical Society ; 2017
    In:  ECS Meeting Abstracts Vol. MA2017-01, No. 22 ( 2017-04-15), p. 1133-1133
    Details
    In: ECS Meeting Abstracts, The Electrochemical Society, Vol. MA2017-01, No. 22 ( 2017-04-15), p. 1133-1133
    Abstract: The flow channel is very important to the performance of proton exchange membrane fuel cells (PEMFCs), it is believed that the PEM fuel cell performance is greatly affected by the flow patterns besides the operating temperature, gas inlet humidity, and so on [1,2,3]. The channel or rib width and channel cross-sectional area determine the pressure drop, thus directly influence on the water removal, and then affect the oxygen supply and oxygen reduction reaction. In this study, two flow pattern, four different channel designs are investigated mainly by three-dimensional simulation, effects of different design on cell performance are validated by the experiments. After analyzing the differences between the four kinds of flow channels, the situations of current density distribution, water distribution and oxygen distribution in the cell are studied and the performance are analyzed. We found out how the flow channel width and cross sectional area on the performance of PEM fuel cell: the narrower the width is, the better the cell’s performance is when current is low. The larger the cross sectional area is, the better the cell’s performance is when current is high. Acknowledgements This work was supported in part by National Natural Science Foundation of China (Grant No. 21533005) and Science Foundation of Ministry of Education of China ( Grant No. 413064). References [1] Bonghwan Lee, Kiwon Park and Hyung-Man Kim. Numerical Optimization of Flow Field Pattern by Mass Transfer and Electrochemical Reaction Characteristics in Proton Exchange Membrane Fuel Cells[J] . Int.J. Electrochem. Sci., 8 (2013) 219 – 234 [2] A. Arvay, J. French, J.-C. Wanga, X.-H. Peng, A.M. Kannan. Nature inspired flow field designs for proton exchange membrane fuel cell[J] International Journal of Hydrogen Energy 38(2013):3717-3726 [3] Sungho Lee, Heeseok Jeong, Byungki Ahn, Taewon Lim, Youngjin Son. Parametric study of the channel design at the bipolar plate in PEMFC performances[J] .International journal of hydrogen energy 33 ( 2008 ) 5691–5696 Figure 1
    Type of Medium: Online Resource
    ISSN: 2151-2043
    URL: Article
    DOI: 10.1149/MA2017-01/22/1133
    Language: Unknown
    Publisher: The Electrochemical Society
    Publication Date: 2017
    detail.hit.zdb_id: 2438749-6
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