期刊
JOURNAL OF ALLOYS AND COMPOUNDS
卷 914, 期 -, 页码 -出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2022.165316
关键词
Lithium-ion battery; Hydrogen extraction reaction; Highly dispersed CuO nanoparticles; ZIF-4@CuO; ZIF-4-CuCl2
资金
- Shanghai University of Engineering Science Innovation Fund for Graduate Students [18KY0409]
- Natural Science Foundation of Shanghai City [19ZR1421300]
In this study, a novel lithium-ion battery anode material, ZIF-4@CuO, is proposed. Highly dispersed CuO nanoparticles were prepared by hydrogen extraction reaction and precursor decomposition, which were combined with the ZIF-4 framework to strongly promote the reaction kinetics of the electrode. ZIF-4@CuO exhibited excellent electrochemical performance in LIBs.
A novel prepared ZIF-4@CuO is proposed as lithium-ion battery (LIB) anode material in this work. ZIF-4-CuCl2 is prepared by the hydrogen extraction reaction in which CuCl2 replaced the hydrogen sites on the imidazole-based N-heterocyclic carbene of ZIF-4 for under basic conditions. ZIF-4@CuO was prepared by decomposition of ZIF-4-CuCl2 precursor. The formed CuO was isolated and highly dispersed by the ZIF-4 frame. The combination of porous structure by ZIF and highly dispersed CuO nanoparticles strongly pro-motes the reaction kinetics of the electrode. The reversible specific capacity of ZIF-4@CuO anode material is 425 mA h g(-1) at 1000 mA g(-1) after 300 cycles, exhibits excellent electrochemical performance in LIBs. The preparation of highly dispersed nanoparticles explores a novel strategy for the anodes design of LIBs with superior performance. (C) 2022 Elsevier B.V. All rights reserved.
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