title: A Robust Versatile Hybrid Electrocatalyst for the Oxygen Reduction Reaction.
abstract: 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 as a promising potential non-precious-metal ORR catalyst in practical fuel cell applications.
authors.affiliation: The Key Lab of Low-Carbon Chemistry & Energy Conservation of Guangdong Province, School of Materials Science and Engineering, Sun Yat-sen University , Guangzhou 510275, China.
authors.forename: Kun
authors.initials: K
authors.lastname: Wang
authors.affiliation: School of Chemical Engineering and Technology, Sun Yat-sen University , Zhuhai 519082, China.
authors.forename: Yi
authors.initials: Y
authors.lastname: Wang
authors.affiliation: School of Chemistry, Sun Yat-sen University , Guangzhou 510275, China.
authors.forename: Yexiang
authors.initials: Y
authors.lastname: Tong
authors.affiliation: The Key Lab of Low-Carbon Chemistry & Energy Conservation of Guangdong Province, School of Materials Science and Engineering, Sun Yat-sen University , Guangzhou 510275, China.
authors.forename: Zhangweihao
authors.initials: Z
authors.lastname: Pan
authors.affiliation: The Key Lab of Low-Carbon Chemistry & Energy Conservation of Guangdong Province, School of Materials Science and Engineering, Sun Yat-sen University , Guangzhou 510275, China.
authors.forename: Shuqin
authors.initials: S
authors.lastname: Song
keywords: WC-FeWO4@FeN-OMC; comparable activity; in acidic and basic media; oxygen reduction reaction; superior stability