苯甲酸
锂(药物)
阳极
电化学
微观结构
异构化
金属有机骨架
复合数
材料科学
配位复合体
化学
化学工程
金属
电极
有机化学
复合材料
吸附
冶金
催化作用
物理化学
内分泌学
工程类
医学
作者
Ling Ding,XiaoBing Jiang,Kai Li,Jianwu Wen,Min Zeng
标识
DOI:10.1016/j.electacta.2023.142901
摘要
The performance of traditional anode materials for commercial lithium-ion batteries (LIBs) has been unable to meet the demand of today`s world, so it is imperative to develop materials with better performance. Among many candidate materials, metal-organic frames have attracted much attention due to their unique structure and composite materials. Herein, a simple and novel structural design strategy is proposed to obtain three Sn-MOFs (Sn-PPA(1,4-benzoic acid), Sn-MPA(1,3-benzoic acid), Sn-PA(1,2-benzoic acid)) with different Sn-O reversible coordination bonds. The isomerization of the two carboxyl groups on the benzene ring improves the utilization rate of the active site and forms a network extended skeleton structure favorable to reaction kinetics, thus achieving better electrochemical performance, especially with larger capacity and excellent cyclic stability. A series of characterizations provide an in-depth understanding of how Sn-MOFs can combine "synthesis mode-microstructure-lithium storage mechanism" in the process of realizing reversible formation of coordination bonds.
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