Single-Atom Cobalt Supported on Ncnts as Bifunctional Electrocatalysts Synthesized by Microwave-Assisted Treatment for Zn-Air Batteries

Single atom catalysts are widely considered as efficient electrocatalysts for reversible oxygen reactions in rechargeable Zn-air batteries. Herein, we have designed a simple, easily scalable, and novel method for the synthesis of single-atom cobalt catalyst on nitrogen-doped carbon nanotubes (NCNTs) by microwave-assisted treatment of cobalt porphyrin and NCNTs for 90 s. The obtained single-atom catalyst indicated much better catalytic performance than NCNTs and metallic-cobalt catalyst on NCNTs for the ORR and OER. Furthermore, single-atom cobalt catalysts as an air electrode exhibited excellent discharge/charge performance and the power density of 131.5 mW cm-2 in Zn-air batteries.

Keywords: single-atom cobalt, NCNTs, microwave, Zn-air batteries

Suggested Citation: Suggested Citation

Zhou, Guangyuan and Zhao, Anqi and Wang, Ping and Liu, Hongfei and Wang, Lu-Ning, Single-Atom Cobalt Supported on Ncnts as Bifunctional Electrocatalysts Synthesized by Microwave-Assisted Treatment for Zn-Air Batteries. Available at SSRN: https://ssrn.com/abstract=4355579 or http://dx.doi.org/10.2139/ssrn.4355579