Cobalt nanoparticle decorated graphene aerogel for efficient oxygen reduction reaction electrocatalysis. (2nd March 2017)

• Record Type: Journal Article
• Authors: Liu, Xiangqian; Yu, Yanan; Niu, Yanli; Bao, Shujuan; Hu, Weihua
• Is Part Of: International journal of hydrogen energy. Volume 42:Number 9(2017)
• Page Start: 5930
• Page End: 5937
• Publication Date: 2017-03-02
• Subjects: Oxygen reduction reaction -- Cobalt nanoparticle -- Graphene aerogel -- Electrocatalysis; Hydrogen as fuel -- Periodicals; Hydrogène (Combustible) -- Périodiques; Hydrogen as fuel; Periodicals; 665.81
• DOI: 10.1016/j.ijhydene.2017.02.009
• Languages: English
• ISSNs: 0360-3199

Abstract

Abstract: Transition metals have attracted particular research interest for sustainable ORR electrocatalysis but zero-valent ones have been often ignored. In this work metallic cobalt nanoparticle decorated graphene aerogel (CoNPs/rGO aerogel) was synthesized via a facile hydrothermal reaction, followed by thermal annealing in reducing H2 atmosphere. As-prepared CoNPs/rGO aerogel demonstrates commercial Pt/C-comparable ORR activity through a predominant four-electron pathway, as well as excellent durability and methanol tolerance superior to Pt/C in alkaline medium. This work suggests that metallic cobalt nanoparticle is highly efficient to boost the ORR activity of neighboring carbon besides various cobalt compounds. Highlights: Metallic cobalt nanoparticle decorated graphene aerogel was synthesized. It demonstrates commercial Pt/C-comparable ORR activity. Metallic cobalt is highly efficient to boost the ORR activity of neighboring carbon.