Facile solution synthesis of FeNx atom clusters supported on nitrogen-enriched graphene carbon aerogels with superb electrocatalytic performance toward the oxygen reduction reaction. Issue 44 (31st October 2019)

• Record Type: Journal Article
• Authors: Hong, Min; Nie, Jianhang; Zhang, Xiaohua; Zhang, Pengfei; Meng, Qin; Huang, Junlin; Xu, Zhenyang; Du, Cuicui; Chen, Jinhua
• Is Part Of: Journal of materials chemistry. Volume 7:Issue 44(2019)
• Page Start: 25557
• Page End: 25566
• Publication Date: 2019-10-31
• Subjects: Materials -- Research -- Periodicals; Chemistry, Analytic -- Periodicals; Environmental sciences -- Research -- Periodicals; 543.0284
• DOI: 10.1039/c9ta09104a
• Languages: English
• ISSNs: 2050-7488

Abstract

Abstract : FeN x atom clusters anchored on N-enriched graphene carbon aerogel exhibited high mass specific activity (840 mA mgFe −1 at 0.80 V), positive E 1/2 (0.90 V vs. RHE), excellent durability and strong tolerance to methanol and SCN − in alkaline media. Abstract : The development of non-platinum catalysts for the oxygen reduction reaction (ORR) to substitute state-of-the-art but expensive Pt catalysts is essential for the development and practical application of fuel cells. Here, combining the self-assembly and coordination interaction between graphene oxide (GO) with g-C3 N4 and iron phthalocyanine (FePc), FeN x atom clusters supported on three-dimensional porous nitrogen-enriched graphene carbon aerogels were successfully prepared by one facile solution method. The obtained FeN x atom cluster catalyst (FeN x -CN/g-GEL) exhibited superb catalytic performance ( E 1/2 = 0.90 V) toward the ORR, which is superior to that of commercial Pt/C ( E 1/2 = 0.835 V) and the currently reported non-noble nanocatalysts. Additionally, the catalyst displayed a high metal utilization rate with a mass specific activity of 840 mA mgFe −1 at 0.80 V, excellent long-term stability with only a little decline after the 28 000 s test and remarkable tolerance to methanol and SCN − .