文献类型：期刊文献

英文题名：Synergistic Enhancement of Electrocatalytic Activity toward Oxygen Reduction Reaction in Alkaline Electrolytes with Pentabasic (Fe, B, N, S, P)-Doped Reduced Graphene Oxide

作者：Chen, Wei[1];Sin, Munil[1];Wei, Ping-Jie[1];Zhang, Qian-Ling[2];Liu, Jin-Gang[1]

机构：[1]East China Univ Sci & Technol, Dept Chem, Shanghai 200237, Peoples R China;[2]Shenzhen Univ, Coll Chem & Environm Engn, Shenzhen Key Lab Funct Polymer, Shenzhen 518060, Guangdong, Peoples R China

年份：2016

卷号：34

期号：9

起止页码：878

外文期刊名：CHINESE JOURNAL OF CHEMISTRY

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000386866800005)】；

基金：This study was financially supported by the NSF of China (Nos. 21271072, 21571062 to JGL; 21503080 to PJW; 21471101 to QLZ), the Program for Professor of Special Appointment (Eastern Scholar) at Shanghai Institutions of Higher Learning, the Shanghai Pujiang Program (No. 13J1401900) to JGL, and Shenzhen Government's Plan of Science and Technology (No. JCY20150324140036843) to QLZ.

语种：英文

外文关键词：oxygen reduction reaction; reduced graphene oxide; multiple dopant; electrocatalysis

摘要：As alternatives to Pt-based electrocatalysts, the development of nonprecious metal catalysts with high performance in the cathodic oxygen reduction reaction (ORR) is highly desirable for widespread use in fuel cells. Here we report a simple approach for preparing pentabasic (Fe, B, N, S, P)-doped reduced graphene oxide (rGO) via a two-step doping method of adding boric acid and ferric chloride to ternary (N, S, P)-doped rGO (NSPG). Electrochemical investigation of the composites for the ORR revealed that simultaneously doping appropriate amounts of Fe and B into the NSPG produced a synergistic effect that endowed the prepared catalyst with both a positively shifted ORR half-wave potential and high selectivity for the 4e(-) reduction of O-2. The optimized Fe2B-NSPG catalyst approached a 4e(-) process for the ORR with a half-wave potential (E-1/2=0.90 V vs. RHE) even 30 mV higher than that of the commercial Pt/C catalyst in alkaline solution. Furthermore, relative to the Pt/C catalyst, the Fe2B-NSPG demonstrated superior stability and excellent tolerance of the methanol cross-over effect. This simple method afforded pentabasic (Fe, B, N, S, P)-doped rGO as a promising nonprecious metal catalyst used for alkaline fuel cells.