Preparation and electrochemical properties of nanoflower MoO3−x anodes

被引：0

作者：

Hou X. ^{[1
]}

Cheng F. ^{[1
]}

Ruan M. ^{[1
]}

Du H. ^{[1
]}

Zhang X. ^{[1
]}

Fang Z. ^{[1
]}

机构：

[1] School of Metallurgical Engineering, Xi’an University of Architecture and Technology, Xi’an

来源：

Zhongguo Youse Jinshu Xuebao/Chinese Journal of Nonferrous Metals | 2024年 / 34卷 / 03期

基金：

中国国家自然科学基金;

关键词：

lithium ion battery anode material; long cycle stability; MoO[!sub]3[!/sub; oxygen vacancy; proton-electron co-doping;

D O I：

10.11817/j.ysxb.1004.0609.2023-44369

中图分类号：

学科分类号：

摘要：

Molybdenum trioxide (MoO3) has become one of the most popular anode materials for lithium-ion batteries due to its high theoretical specific capacity, good thermal stability and two-dimensional layered structure. However, the low intrinsic conductivity of MoO3 and the rapid capacity decay limit the large-scale application of MoO3 during cycling. In this paper, oxygen vacancies and nanoflower structures were introduced into MoO3 by proton-electron co-doping and high-energy nanosizing, and N-MoO3−x materials were prepared and used as anode for lithium-ion batteries. By introducing oxygen vacancies and nanosizing, the conductivity of the material is effectively improved, the van der Waals gap is expanded and the volume expansion of the material is buffered during long-term charge and discharge. The results show the prepared nanoflower MoO3−x has good lithium storage performance. It can cycle 500 cycles at current density of 2 A/g and the specific capacity can reach 600 mA∙h/g. The N-MoO3−x materials is significantly higher than the previously reported molybdenum trioxide-based anode materials. © 2024 Central South University of Technology. All rights reserved.

引用

页码：823 / 834

页数：11

共 43 条

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