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Cited by 175

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d-Orbital steered active sites through ligand editing on heterometal imidazole frameworks for rechargeable zinc-air battery

Open access
Jiang, Yi, Deng, Ya-Ping, Liang, Ruilin, Fu, Jing, Gao, Rui, Luo, Dan, Bai, Zhengyu, Hu, Yongfeng, Yu, Aiping, Chen, Zhongwei·2020·Nature Communications

Abstract

The implementation of pristine metal-organic frameworks as air electrode may spark fresh vitality to rechargeable zinc-air batteries, but successful employment is rare due to the challenges in regulating their electronic states and structural porosity. Here we conquer these issues by incorporating ligand vacancies and hierarchical pores into cobalt-zinc heterometal imidazole frameworks. Systematic characterization and theoretical modeling disclose that the ligand editing eases surmountable energy barrier for *OH deprotonation by its efficacy to steer metal d-orbital electron occupancy. As a stride forward, the selected cobalt-zinc heterometallic alliance lifts the energy level of unsaturated d-orbitals and optimizes their adsorption/desorption process with oxygenated intermediates. With these merits, cobalt-zinc heterometal imidazole frameworks, as a conceptually unique electrode, empowers zinc-air battery with a discharge-charge voltage gap of 0.8 V and a cyclability of 1250 h at 15 mA cm–2, outperforming the noble-metal benchmarks.

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Metadata

Authors
Jiang, Y., Deng, Y.-P., Liang, R., Fu, J., Gao, R., Luo, D., Bai, Z., Hu, Y., Yu, A., & Chen, Z.
Venue
Nature Communications
Published
2020-11-17
Volume
11
Issue
1
Pages
5858-5858
ISSN
2041-1723 (ISSN-L)
OpenAlex
W3105677887
Cited by
175
References
2
FWCI
4.91
Type
journal article
Language
en
Open access
gold

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Jiang, Y., Deng, Y.-P., Liang, R., Fu, J., Gao, R., Luo, D., Bai, Z., Hu, Y., Yu, A., & Chen, Z. (2020). d-Orbital steered active sites through ligand editing on heterometal imidazole frameworks for rechargeable zinc-air battery. Nature Communications. https://doi.org/10.1038/s41467-020-19709-6

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