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Effect of particle size on the activity and durability of the Pt/C electrocatalyst for proton exchange membrane fuel cells
Xu, Zhuang1,2; Zhang, Huamin1; Zhong, Hexiang1; Lu, Qiuhong3; Wang, Yunfeng3; Su, Dangsheng3,4
关键词Proton Exchange Membrane Fuel Cells Pt/c Electrocatalyst Particle Size Activity Durability
刊名APPLIED CATALYSIS B-ENVIRONMENTAL
2012-01-12
DOI10.1016/j.apcatb.2011.10.007
111页:264-270
收录类别SCI
文章类型Article
WOS标题词Science & Technology ; Physical Sciences ; Technology
类目[WOS]Chemistry, Physical ; Engineering, Environmental ; Engineering, Chemical
研究领域[WOS]Chemistry ; Engineering
关键词[WOS]PLATINUM CRYSTALLITE SIZE ; OXYGEN REDUCTION REACTION ; SUPPORTED PLATINUM ; NANOPARTICLES ; CATALYSTS ; KINETICS ; CARBON ; ALLOY ; ACID ; DEGRADATION
英文摘要Carbon supported Pt (Pt/C) with various average particle sizes ranging from sub 3 nm to 6.5 nm were in situ prepared and characterized at the cathode of proton exchange membrane fuel cells (PEMFCs). A clear Pt particle size effect on both the catalytic activity for oxygen reduction reaction (ORR) and the durability of the electrocatalyst was revealed. With the Pt particle size increase, both the surface specific activity and the electrochemical stability of Pt/C improved; however, the mass specific activity of Pt/C is balanced by the electrochemical surface area loss. The reduced occupation of corner and edge atoms on the Pt surface during the Pt particle size increase is believed to weaken the adsorption of the oxygenated species on Pt, and thereafter releases more available active sites for ORR and also renders the Pt surface a stronger resistance against potential cycling. It is therefore proposed that by designing the Pt microstructure with more face atoms on the surface, cathode electrocatalyst with both improved activity and enhanced durability would be developed for PEMFCs. (C) 2011 Elsevier B.V. All rights reserved.
语种英语
WOS记录号WOS:000300528500029
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文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/143157
专题中国科学院大连化学物理研究所
作者单位1.Chinese Acad Sci, Dalian Inst Chem Phys, Div Energy Storage Batteries & Technol, Dalian 116023, Peoples R China
2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China
3.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China
4.Max Planck Soc, Fritz Haber Inst, D-14195 Berlin, Germany
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Xu, Zhuang,Zhang, Huamin,Zhong, Hexiang,et al. Effect of particle size on the activity and durability of the Pt/C electrocatalyst for proton exchange membrane fuel cells[J]. APPLIED CATALYSIS B-ENVIRONMENTAL,2012,111:264-270.
APA Xu, Zhuang,Zhang, Huamin,Zhong, Hexiang,Lu, Qiuhong,Wang, Yunfeng,&Su, Dangsheng.(2012).Effect of particle size on the activity and durability of the Pt/C electrocatalyst for proton exchange membrane fuel cells.APPLIED CATALYSIS B-ENVIRONMENTAL,111,264-270.
MLA Xu, Zhuang,et al."Effect of particle size on the activity and durability of the Pt/C electrocatalyst for proton exchange membrane fuel cells".APPLIED CATALYSIS B-ENVIRONMENTAL 111(2012):264-270.
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