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

Journal Article


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.

Publication Date


  • 2019

Citation


  • 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.

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/3904

Start Page


  • 1904206-1

End Page


  • 1904206-7

Volume


  • 29

Place Of Publication


  • Germany

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.

Publication Date


  • 2019

Citation


  • 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.

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/3904

Start Page


  • 1904206-1

End Page


  • 1904206-7

Volume


  • 29

Place Of Publication


  • Germany