Carbon matrix effects on the micro-structure and performance of Pt nanowire cathode prepared by decal transfer method

doi:10.1016/S2095-4956(15)60303-5

能源化学(英文) ›› 2015, Vol. 21 ›› Issue (2): 213-218.DOI: 10.1016/S2095-4956(15)60303-5

Carbon matrix effects on the micro-structure and performance of Pt nanowire cathode prepared by decal transfer method

Zhaoxu Wei, An He, Kaihua Su, Sheng Sui

Institute of Fuel Cell, Shanghai Jiao Tong University, Shanghai 200240, China

收稿日期:2014-09-29 修回日期:2014-11-15 出版日期:2015-03-23 发布日期:2015-03-23
通讯作者: Sheng Sui

Carbon matrix effects on the micro-structure and performance of Pt nanowire cathode prepared by decal transfer method

Zhaoxu Wei, An He, Kaihua Su, Sheng Sui

Institute of Fuel Cell, Shanghai Jiao Tong University, Shanghai 200240, China

Received:2014-09-29 Revised:2014-11-15 Online:2015-03-23 Published:2015-03-23
Contact: Sheng Sui

摘要/Abstract

摘要： High performance cathode for polymer electrolyte membrane fuel cell was prepared by depositing Pt nanowires in a carbon matrix coated on a substrate, and using decal transfer method to fabricate the membrane electrode assembly. The effects of carbon and ionomer contents on the electrode micro-structure and fuel cell performance are investigated by physical characterization and single cell testing. The Pt nanowires are gradient distributed across the cathode thickness, and more Pt exists near the membrane. Both the carbon and ionomer contents can affect the Pt nanowires distribution and aggregation. In addition, the carbon loading dominates the transport distance of gas and proton, and the ionomer content affects the triple phase boundaries and porosity in the cathode. The optimal structure of Pt nanowire cathode is obtained at 0.10 mg·cm^-2 carbon loading and 10 wt% ionomer.

关键词: Pt nanowire, carbon matrix, ionomer, decal transfer method, polymer electrolyte membrane fuel cell

Abstract: High performance cathode for polymer electrolyte membrane fuel cell was prepared by depositing Pt nanowires in a carbon matrix coated on a substrate, and using decal transfer method to fabricate the membrane electrode assembly. The effects of carbon and ionomer contents on the electrode micro-structure and fuel cell performance are investigated by physical characterization and single cell testing. The Pt nanowires are gradient distributed across the cathode thickness, and more Pt exists near the membrane. Both the carbon and ionomer contents can affect the Pt nanowires distribution and aggregation. In addition, the carbon loading dominates the transport distance of gas and proton, and the ionomer content affects the triple phase boundaries and porosity in the cathode. The optimal structure of Pt nanowire cathode is obtained at 0.10 mg·cm^-2 carbon loading and 10 wt% ionomer.

Key words: Pt nanowire, carbon matrix, ionomer, decal transfer method, polymer electrolyte membrane fuel cell

Zhaoxu Wei, An He, Kaihua Su, Sheng Sui. Carbon matrix effects on the micro-structure and performance of Pt nanowire cathode prepared by decal transfer method[J]. 能源化学(英文), 2015, 21(2): 213-218.

Zhaoxu Wei, An He, Kaihua Su, Sheng Sui. Carbon matrix effects on the micro-structure and performance of Pt nanowire cathode prepared by decal transfer method[J]. Journal of Energy Chemistry, 2015, 21(2): 213-218.

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Carbon matrix effects on the micro-structure and performance of Pt nanowire cathode prepared by decal transfer method

Carbon matrix effects on the micro-structure and performance of Pt nanowire cathode prepared by decal transfer method

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