Co/CoO/CoFe2O4/G nanocomposite derived from layered double hydroxide towards mass production of efficient Pt-free electrocatalyst for oxygen reduction reaction
Ruijie Huo,Wenjie Jiang,Sailong Xu,Zhang Fazhi and Jin-Song Hu
Nanoscale, 2014,6, 203-206, DOI: 10.1039/C3NR05352K
http://pubs.rsc.org/en/content/articlelanding/2013/nr/c3nr05352k#!divAbstract
Abstract (click image for pdf file)
Developing a simple, reproducible and cost-effective protocol for mass production of non-precious-metal electrocatalysts for oxygen reduction reaction (ORR) is still challenging but highly desirable for their practical applications in industry. Herein, we developed a facile and scalable method to directly produce graphene supported CoFe-LDH and successfully used them as precursor for mass production of Co/CoO/CoFe2O4/G as low-cost and Pt-free efficient electrocatalyst for ORR. The electrochemical tests show that the Co/CoO/CoFe2O4/G catalyst exhibits the comparable electrocatalytic activity and much better durability for ORR in comparison with commercial Pt/C catalyst. The result may provide a way for cost-effective production of ORR electrocatalysts in large scale for industrial application. It was believed that the reported route could be also extended to design and produce various nanostructured catalysts in a cost-effective and scalable way in view of the versatility of LDH precursors.
