ZIF-67-Derived Ag/Co-Embedded N-Enriched Mesoporous Carbon for Oxygen Reduction Reaction

Authors

Zheng-ling DI, College of Chemical Engineering, North China University of Science and Technology, Tangshan 063210, PR China;Hebei Province Key Laboratory of Photocatalytic and Electrocatalytic Materials for Environment, Tangshan 063009, PR China;
Jing ZHU, College of Chemical Engineering, North China University of Science and Technology, Tangshan 063210, PR China;Hebei Province Key Laboratory of Photocatalytic and Electrocatalytic Materials for Environment, Tangshan 063009, PR China;
Lei DAI, College of Chemical Engineering, North China University of Science and Technology, Tangshan 063210, PR China;Hebei Province Key Laboratory of Photocatalytic and Electrocatalytic Materials for Environment, Tangshan 063009, PR China;Follow
Wei MENG, College of Chemical Engineering, North China University of Science and Technology, Tangshan 063210, PR China;Hebei Province Key Laboratory of Photocatalytic and Electrocatalytic Materials for Environment, Tangshan 063009, PR China;
Yue-hua LI, College of Chemical Engineering, North China University of Science and Technology, Tangshan 063210, PR China;Hebei Province Key Laboratory of Photocatalytic and Electrocatalytic Materials for Environment, Tangshan 063009, PR China;
Zhang-xing HE, College of Chemical Engineering, North China University of Science and Technology, Tangshan 063210, PR China;Hebei Province Key Laboratory of Photocatalytic and Electrocatalytic Materials for Environment, Tangshan 063009, PR China;
Ling WANG, College of Chemical Engineering, North China University of Science and Technology, Tangshan 063210, PR China;Hebei Province Key Laboratory of Photocatalytic and Electrocatalytic Materials for Environment, Tangshan 063009, PR China;

Corresponding Author

Lei DAI(dailei_b@163.com)

Abstract

Nitrogen-doped porous carbon materials are considered as one of the most promising catalysts for oxygen reduction reaction (ORR). Herein, in order to further improve the activity of the nitrogen-doped porous carbon, Ag/Co bimetal is embedded into nitrogendoped porous carbon to form Ag/Co-embedded nitrogen-doped porous carbon material (AgCo@NC). The AgCo@NC was derived by the wet impregnation of Ag+ into ZIF-67 precursor, followed by chemical reduction and a subsequent pyrolysis process under Ar atmosphere at different temperatures (500 ℃, 600 ℃, 700 ℃). The morphologic characterization shows that the Ag/Co nanoparticles were successfully embedded in the mesoporous carbon framework with abundant nitrogen atoms. The electrochemical test results indicate that the AgCo@NC-600 catalyst exhibited the higher onset potential and half-wave potential than thods of others and Pt/C in alkaline media. Furthermore, the AgCo@NC and Co@NC also displayed the higher methanol-tolerance performance than commercial Pt/C.

Graphical Abstract

Keywords

oxygen reduction reaction, ZIF-67, N-doped porous carbon, Ag nanoparticles

DOI Link

https://doi.org/10.13208/j.electrochem.180726

Publication Date

2019-12-28

Online Available Date

2018-10-25

Revised Date

2018-08-28

Received Date

2018-07-27

Recommended Citation

Zheng-ling DI, Jing ZHU, Lei DAI, Wei MENG, Yue-hua LI, Zhang-xing HE, Ling WANG. ZIF-67-Derived Ag/Co-Embedded N-Enriched Mesoporous Carbon for Oxygen Reduction Reaction[J]. Journal of Electrochemistry, 2019 , 25(6): 781-791.
DOI: 10.13208/j.electrochem.180726
Available at: https://jelectrochem.xmu.edu.cn/journal/vol25/iss6/16