Co-Mn 金属有机骨架衍生的双金属硫化物及其在锂离子电池负极材料中的应用

doi:10.12066/j.issn.1007-2861.2157

Abstract

Abstract:

The facile synthesis of a Co-Mn metal-organic-framework (MOF) with a porous structure is reported. The prepared bimetallic MOF was then vulcanized to obtain a porous CoS$_{2}$/MnS bimetallic composite. By comparing single metal MnS and CoS$_{2}$ materials prepared by the same method, it was observed that the CoS$_{2}$/MnS bimetal composite exhibited a petal-like porous sheet structure and a smaller particle size than that of single metal composites. When used as an electrode material in lithium-ion batteries, the CoS$_{2}$/MnS composite exhibited the best lithium storage performance among contemporary composites. It was believed that the porous petal-like structure provided a short transport pathway for lithium-ions. The synergistic combination of the two metal sulfides also effectively inhibited the rapid capacity decay caused by volume changes during cycling. In addition, the carbon skeleton derived from the MOF organic ligands further played a positive role in the enhancement of the electronic conductivity of the material.

Key words: lithium-ion batteries, bimetallic sulfides, anode materials, metal-organic-framework (MOF)

CLC Number:

TB34

CHEN Hengqiao, LÜ Liping, WU Minghong. Design and application of Co-Mn metal-organic-frameworks derived bimetallic sulfides as anode for lithium-ion batteries[J]. Journal of Shanghai University（Natural Science Edition）, 2021, 27(2): 369-378.

Figures/Tables 8

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Design and application of Co-Mn metal-organic-frameworks derived bimetallic sulfides as anode for lithium-ion batteries

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