A Zeolitic‐Imidazole Frameworks‐Derived Interconnected Macroporous Carbon Matrix for Efficient Oxygen Electrocatalysis in Rechargeable Zinc–Air Batteries

Advanced Materials - Tập 32 Số 28 - 2020
Abdoulkader Ibro Douka1, Yangyang Xu1, Huan Yang1, Shahid Zaman1, Ya Yan2, Hongfang Liu1, Manzola Abdou Salam3, Bao Yu Xia1
1Key Laboratory of Material Chemistry for Energy Conversion and Storage (Ministry of Education), Hubei Key Laboratory of Material Chemistry and Service Failure, Wuhan National Laboratory for Optoelectronics, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), 1037 Luoyu Road, Wuhan, 430074 P. R. China
2School of Materials Science and Engineering, University of Shanghai for Science and Technology, 516 Jungong Road, Shanghai, 200093 P. R. China
3Laboratory of Materials, Water and Environmental Chemistry, Faculty of Science and Technology, Department of Chemistry, Abdou Moumouni University of Niamey, Niamey, BP 10662 Niger

Tóm tắt

AbstractNanostructures derived from zeolitic‐imidazole frameworks (ZIFs) gain much interest in bifunctional oxygen electrocatalysis. However, they are not satisfied well for long‐life rechargeable zinc–air batteries due to the limited single particle morphology. Herein, the preparation of an interconnected macroporous carbon matrix with a well‐defined 3D architecture by the pyrolysis of silica templated ZIF‐67 assemblies is reported. The matrix catalyst assembled zinc–air battery exhibits a high power density of 221.1 mW cm−2 as well as excellent stability during 500 discharging/charging cycles, surpassing that of a commercial Pt/C assembled battery. The synergistic effect from the interconnected macroporous structure together with abundant cobalt–nitrogen–carbon active sites justify the excellent electrocatalytic activity and battery performance. Considering the advanced nanostructures and performance, the as‐synthesized hybrid would be promising for rechargeable zinc–air batteries and other energy technologies. This work may also provide significant concept in the view of electrocatalysis design for long‐life battery.

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Advanced Materials

Tập 32 Số 28

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