Co-based Fuel Cell Cathode Electrocatalyst for both Acid and Alkaline Environment. (February 2019)

• Record Type: Journal Article
• Authors: Jiang, Tao; Luan, Weiling; Wu, Senming
• Is Part Of: Energy procedia. Volume 158(2019)
• Page Start: 2372
• Page End: 2377
• Publication Date: 2019-02
• Subjects: Cobalt -- oxygen reduction reaction -- catalyst -- fuel cell; Power resources -- Congresses; Power resources -- Periodicals; Power resources; Conference proceedings; Periodicals; 333.7905
• DOI: 10.1016/j.egypro.2019.01.286
• Languages: English
• ISSNs: 1876-6102

Abstract

Abstract: The development of a cheap and high-performance oxygen reduction reaction (ORR) catalyst is still a great issue for fuel cells. Co-N-C is found good ORR catalytic activity as the substitute of the present precious-metal platinum and its alloys. Herein, we propose an ORR catalyst doped with Co and N, which shows excellent catalytic activity in alkaline media with half-wave potential of 10 mV positive than commercial Pt/C 20 wt.%, and comparable catalytic activity in acid electrolyte with half-wave potential of 118 mV negative than Pt/C. Besides, as-prepared catalyst shows high durability in both alkaline and acid environment, attributing to the synergistic effect of the Co-Nx active sites and the coexistence of amount pyridinic nitrogen and graphitic nitrogen.