文献类型：期刊文献

英文题名：Doping Copper Ions into an Fe/N/C Composite Promotes Catalyst Performance for the Oxygen Reduction Reaction

作者：Yu, Guo-Qiang[1];Wei, Ping-Jie[1];Wang, Fei-Fei[1];Liu, Jin-Gang[1]

机构：[1]East China Univ Sci & Technol, Key Lab Adv Mat, Sch Chem & Mol Engn, 130 Meilong Rd, Shanghai 200237, Peoples R China

年份：2017

卷号：4

期号：6

起止页码：1509

外文期刊名：CHEMELECTROCHEM

收录：;EI(收录号：20171603578294);WOS:【SCI-EXPANDED(收录号:WOS:000407694400034)】；

基金：This study was financially supported by the NSF of China (Nos. 21271072, 21571062 to J.G.L.; 21503080 to P.J.W.), the Program for Professor of Special Appointment (Eastern Scholar) at Shanghai Institutions of Higher Learning, the Shanghai Pujiang Program (no. 13 J1401900) to J.G.L. and the Fundamental Research Funds for the Central Universities 222201717003.

语种：英文

外文关键词：Iron; copper co-doping; carbon nanomaterials; electrocatalysis; oxygen reduction reaction; fuel cells

摘要：Developing new non-precious-metal catalysts for the cathodic oxygen reduction reaction (ORR) in low-temperature fuel cells is highly desirable for replacing Pt-based noble-metal electrocatalysts. Herein, we report a two-step method to prepare Fe, Cu, and N-doped reduced graphene oxide/carbon nanotube (rGO/CNT) composites through the low-temperature hydrothermal treatment of iron-porphyrin-modified graphene and copper-chloride-loaded CNTs followed by high-temperature calcination, for use as efficient and stable electrocatalysts for the ORR. The optimized Fe/Cu-N-rGO/CNT catalyst exhibited higher ORR activity and superior stability, as compared to a commercial Pt/C catalyst in 0.1 mol.L-1 KOH solutions, and also demonstrates good stability in acidic electrolytes. These results suggest that additional doping of Cu ions into the Fe/N/C catalyst significantly promotes the catalyst ORR performance.