- 专利标题： ELECTRODE CATALYST, COMPOSITION FOR FORMING GAS DIFFUSION ELECTRODE, GAS DIFFUSION ELECTRODE, MEMBRANE-ELECTRODE ASSEMBLY, AND FUEL CELL STACK
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申请号： US16078314申请日： 2017-01-24
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公开(公告)号： US20190039051A1公开(公告)日： 2019-02-07
- 发明人: Tomoteru Mizusaki , Yoko Nakamura , Kiyotaka Nagamori , Hiroshi Igarashi , Yasuhiro Seki
- 申请人： N.E. CHEMCAT CORPORATION
- 申请人地址： JP Tokyo
- 专利权人： N.E. CHEMCAT CORPORATION
- 当前专利权人： N.E. CHEMCAT CORPORATION
- 当前专利权人地址： JP Tokyo
- 优先权： JP2016-037629 20160229
- 国际申请： PCT/JP2017/002387 WO 20170124
- 主分类号： B01J23/44
- IPC分类号： B01J23/44 ; H01M4/92 ; H01M8/10 ; B01J23/42 ; B01J35/00
摘要：
To provide electrode catalyst which has the catalyst activity equal to or more than the Pt/Pd/C catalyst. The electrode catalyst 10A has a support 2 and catalyst particles 3a supported on the support. The catalyst particle has the core part 4 formed on the support, the first shell part 5a formed on the core part and the second shell part 6a formed on a part of the surface of the first shell part. The core part contains Pd, the first shell part contains Pt, and the second shell part contains the Ti oxide. A percentage of the Pt R1Pt (atom %) and a percentage of the Ti derived from the Ti oxide R1Ti (atom %) in an analytical region near a surface measured by X-ray photoelectron spectroscopy satisfy the conditions of the equation (1): 1.00≤(R1Ti/R1Pt)≤2.50.
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