4.7 Article

Fluorine-doped MnO@fluorographene with high conductivity for improved capacity and prolonged cycling stability of lithium-ion anode

期刊

JOURNAL OF ALLOYS AND COMPOUNDS
卷 945, 期 -, 页码 -

出版社

ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2023.169255

关键词

MnO; Fluorographene; Oxygen vacancies; Anode; Lithium-ions battery

向作者/读者索取更多资源

The hierarchical composite of fluorine-doped MnO and fluorographene (F-MnO@FG) was synthesized using a hydrothermal process combined with annealing. It exhibited higher capacity and prolonged cycling stability compared to other carbonaceous MnO-based anodes for lithium-ion batteries (LIBs). The composite's structure, with the advantages of F doping and abundant oxygen vacancies, contributed to its high performance. The rational preparation method can be applied to similar materials for promising LIB anodes.
The hierarchical composite of fluorine-doped MnO and fluorographene (F-MnO@FG) was successfully synthesized through a hydrothermal process combined with annealing, and it exhibited higher capacity and prolonged cycling stability compared with many reported carbonaceous MnO-based anodes for lithium-ion batteries (LIBs). F-MnO@FG composite showed a high capacity of 1104.8 mAh g-1 after 350 cycles at a current density of 1 A g-1 and stable cycling performance of 382.2 mAh g-1 after 2000 cycles at 5 A g-1. It relates to the structure of F-MnO@FG composite with the advantages of F doping and abundant oxygen vacancies. The prepared FG of F-MnO@FG was measured to have a certain content of semi-ionic C-F bonds, which can provide porous conductive networks facilitating electron/ion transfer. The F doping of MnO nanoparticles and the induced more oxygen vacancies have endowed the composite higher intrinsic con-ductivity and more active sites for Li+ adsorption. This rational preparation method can be utilized to other similar materials with high electrode kinetics for promising anode of LIBs.(c) 2023 Elsevier B.V. All rights reserved.

作者

我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.7
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

暂无数据
暂无数据