Catalyst for polymer solid electrolyte fuel cell, membrane electrode assembly, and fuel cell
US8080347B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 17, 2008 |
| Grant date | Dec 20, 2011 |
| Priority date | — |
| Expiry date | May 30, 2030 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/50
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
There is provided a catalyst for a fuel cell, which simultaneously realizes excellent catalytic activity and catalytic stability. The catalyst for a fuel cell comprises a fine particle of a metal represented by formula:PtxRuySizT1u wherein T1 represents at least one element selected from the group consisting of nickel (Ni), tungsten (W), vanadium (V), and molybdenum (Mo); x=30 to 90 atomic %; y=0 to 50 atomic %; z=0.5 to 20 atomic %; and u=0.5 to 40 atomic %, or comprises a fine particle of a metal represented by formula:PtxRuySizT2u wherein T2 represents at least one element selected from the group consisting of hafnium (Hf), tin (Sn), zirconium (Zr), niobium (Nb), titanium (Ti), tantalum (Ta), chromium (Cr), and aluminum (Al); x=30 to 90 atomic %; y=0 to 50 atomic %; z=0.5 to 20 atomic %; and u=0.5 to 40 atomic %.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.