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题名: Investigation of a High-Performance Nanofiber Cathode with Ultralow Platinum Loading for Proton Exchange Membrane Fuel Cells
作者: Hong, Shaojing1, 2;  Hou, Ming1;  Xiao, Yu3;  Shao, Zhigang1;  Yi, Baolian1
关键词: supported catalysts ;  electrospinning ;  fuel cells ;  platinum ;  proton transport
刊名: ENERGY TECHNOLOGY
发表日期: 2017-08-01
DOI: 10.1002/ente.201600734
卷: 5, 期:8, 页:1457-1463
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Technology
类目[WOS]: Energy & Fuels
研究领域[WOS]: Energy & Fuels
英文摘要: Nanofiber electrodes fabricated by using the electrospinning technique in the cathode of proton exchange membrane fuel cells gave a peak power density of 0.692Wcm(-2) with an ultralow Pt loading of 0.087mgcm(-2). As the cathode, the electrospun (E_spun) electrodes exposed a high Pt surface to oxygen, with a highly uniform distribution of Pt catalyst and Nafion ionomer, which improved the utilization of Pt. The ionic resistance of the E_spun electrode was decreased owing to the nanofiber structure. The high porosity of the E_spun electrode enhanced the Knudsen diffusion in small pores, which mitigated the oxygen-transfer resistance. The addition of 5wt% polytetrafluoroethylene (PTFE) to the E_spun electrode optimized water management, especially at high current densities. The accelerated stability test showed that the long-term durability of the E_spun electrode is much better than the conventional decal electrode due to the interaction of the carbon support and hydrophilic poly(acrylic acid).
关键词[WOS]: OXYGEN-TRANSPORT RESISTANCE ;  GAS-DIFFUSION LAYERS ;  REDUCTION REACTION ;  MICROPOROUS LAYER ;  CATALYST LAYER ;  ELECTRODES ;  ELECTROCATALYSTS ;  NANOPARTICLES ;  ARCHITECTURES ;  DESIGN
语种: 英语
WOS记录号: WOS:000407591200040
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/149831
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian Natl Lab Clean Energy, Dalian 116023, Liaoning, Peoples R China
2.Grad Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Smart Gird Res Inst, Beijing 102211, Peoples R China

Recommended Citation:
Hong, Shaojing,Hou, Ming,Xiao, Yu,et al. Investigation of a High-Performance Nanofiber Cathode with Ultralow Platinum Loading for Proton Exchange Membrane Fuel Cells[J]. ENERGY TECHNOLOGY,2017,5(8):1457-1463.
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