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Zeolitic imidazole framework derived N-doped porous carbon/metal cobalt nanoparticles hybrid for oxygen electrocatalysis and rechargeable Zn-air batteries.

ABSTRACT: Bifunctional electrocatalysts with high catalytic property for the oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) are vital for high-performance zinc-air batteries (ZnABs). In this study, an efficient bifunctional electrocatalyst with hollow structure (C-N/Co (1/2)) has been successfully prepared through carbonization of ZIF-8@ZIF-67 and evaporation of Zn ions at high temperature. With Co nanoparticles encapsulated by an N-doped porous carbon matrix, the catalyst exhibits excellent stability in aqueous alkaline solution over an extended period and good tolerance to the methanol crossover effect. The integration of an N-doped graphitic carbon outer shell and Co nanoparticles enables high ORR and OER activity, as evidenced by ZnAB using the catalyst C-N/Co (1/2) in an air cathode.

SUBMITTER: Liu X

PROVIDER: S-EPMC9029078 | biostudies-literature | 2021 Apr

REPOSITORIES: biostudies-literature

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Zeolitic imidazole framework derived N-doped porous carbon/metal cobalt nanoparticles hybrid for oxygen electrocatalysis and rechargeable Zn-air batteries.

Liu Xia X Ma Yuanyuan Y Cai Yongliang Y Hu Song S Chen Jian J Liu Zhaolin Z Wang Zhijuan Z

RSC advances 20210427 26

Bifunctional electrocatalysts with high catalytic property for the oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) are vital for high-performance zinc-air batteries (ZnABs). In this study, an efficient bifunctional electrocatalyst with hollow structure (C-N/Co (1/2)) has been successfully prepared through carbonization of ZIF-8@ZIF-67 and evaporation of Zn ions at high temperature. With Co nanoparticles encapsulated by an N-doped porous carbon matrix, the catalyst exhibits ex ...[more]

PMID: 35481167

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