• 文献标题:   A high-performance electrocatalyst for oxygen reduction based on reduced graphene oxide modified with oxide nanoparticles, nitrogen dopants, and possible metal-N-C sites
  • 文献类型:   Article
  • 作  者:   XIE Y, LI HQ, TANG CZ, LI SS, LI J, LV Y, WEI XM, SONG YJ
  • 作者关键词:  
  • 出版物名称:   JOURNAL OF MATERIALS CHEMISTRY A
  • ISSN:   2050-7488 EI 2050-7496
  • 通讯作者地址:   Chinese Acad Sci
  • 被引频次:   36
  • DOI:   10.1039/c3ta14153e
  • 出版年:   2014

▎ 摘  要

Non-noble metal (NNM) electrocatalysts with performances comparable with or superior to Pt are highly desirable for fuel cells and metal-air batteries, but remain rare. Herein, we report a new NNM electrocatalyst derived from reduced graphene oxide (rGO), dual nitrogen-containing ligands, and iron and cobalt salts. Remarkably, the onset potential and half-wave potential (E-1/2) of the obtained electrocatalyst shifts 5 and -23 mV, respectively, relative to commercial Pt/C at a standard loading of 20 mu g(pt) cm (2) toward an oxygen reduction reaction (ORR) in alkaline solutions. Additionally, the electrocatalyst is much better than the Pt/C in terms of durability and tolerance to methanol.