Targeted Synergy between Adjacent Co Atoms on Graphene Oxide as an Efficient New Electrocatalyst for Li-CO2 Batteries

Authors

Binwei Zhang, Xiamen University, University of Adelaide, University of WollongongFollow
Yan Jiao, University Of Adelaide
Dong Chao, University Of Adelaide
Chao Ye, University Of Adelaide
Yunxiao Wang, University of WollongongFollow
Kenneth Davey, University Of Adelaide
Hua-Kun Liu, University of WollongongFollow
Shi Xue Dou, University of WollongongFollow
Shi-Zhang Qiao, Tianjin University, University of Adelaide

RIS ID

139360

Publication Details

Zhang, B., Jiao, Y., Chao, D., Ye, C., Wang, Y., Davey, K., Liu, H., Dou, S. & Qiao, S. (2019). Targeted Synergy between Adjacent Co Atoms on Graphene Oxide as an Efficient New Electrocatalyst for Li-CO2 Batteries. Advanced Functional Materials, 29 1904206-1-1904206-7.

Abstract

www.afm-journal.de© 2019 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim1904206 (1 of 7)Li–CO2 batteries are an attractive technology for converting CO2 into energy. However, the decomposition of insulating Li2CO3 on the cathode during discharge is a barrier to practical application. Here, it is demonstrated that a high loading of single Co atoms (≈5.3%) anchored on graphene oxide (adjacent Co/GO) acts as an efficient and durable electrocatalyst for Li–CO2batteries. This targeted dispersion of atomic Co provides catalytically adjacent active sites to decompose Li2CO3. The adjacent Co/GO exhibits a highly significant sustained discharge capacity of 17 358 mA h g−1 at 100 mA g−1 for >100 cycles. Density functional theory simulations confirm that the adjacent Co electrocatalyst possesses the best performance toward the decomposition of Li2CO3 and maintains metallic-like nature after the adsorption of Li2CO3.

Grant Number

ARC/DE170100928