期刊
ACS APPLIED MATERIALS & INTERFACES
卷 8, 期 43, 页码 29356-29364出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsami.6b03751
关键词
WC-FeWO4@FeN-OMC; oxygen reduction reaction; in acidic and basic media; comparable activity; superior stability
资金
- Sino-Greek Science and Technology Cooperation Project [2013DFG62590]
- National Natural Science Foundation of China [21575299, 21576300, 21276290]
- Guangdong Province Nature Science Foundation [2014A030313150]
Identifying non-precious-metal catalysts with desirable overall performance for oxygen reduction reaction (ORR)-in either acidic or basic media is still a bottleneck. Here, a hybrid material is reported, in which tungsten carbide (WC) and ferberite (FeWO4) are attached to the Fe and N dual-doped ordered mesoporous carbon (WC-FeWO4@FeN-OMC) as a superior performance catalyst for the ORR in either acidic or basic media. In comparison with the frequently used Pt/C ORR catalyst (20 wt. %), our hybrid materials exhibit comparable electrocatalytic activity mainly via a 4e ORR process, better stability, and total tolerance to methanol in either acidic or basic media. These advantages, especially the outstanding stability in acidic media, render the WC-FeWO4@FeN-OMC catalyst in practical fuel cell applications.
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