Nanostructured MnO2 anode materials for advanced lithium ion batteries

被引：18

作者：

Liu, Hongdong ^{[1
]}

Hu, Zhongli ^{[1
]}

Ruan, Haibo ^{[1
]}

Hu, Rong ^{[1
]}

Su, Yongyao ^{[1
]}

Zhang, Lei ^{[2
]}

Zhang, Jin ^{[1
]}

机构：

[1] Chongqing Univ Arts & Sci, Res Inst New Mat Technol, Chongqing 402160, Peoples R China

[2] Chongqing Normal Univ, Coll Life Sci, Chongqing 401331, Peoples R China

来源：

JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS | 2016年 / 27卷 / 11期

基金：

中国博士后科学基金; 中国国家自然科学基金;

关键词：

HIGH-PERFORMANCE ANODES; CATHODE MATERIAL; NICKEL FOAM; MICROSPHERES; GRAPHENE; STORAGE; CAPABILITY; COMPOSITE; LIFE; FABRICATION;

D O I：

10.1007/s10854-016-5284-9

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Owing to the high reversible capacity, low-cost, natural abundance and environmental friendliness, manganese dioxide (MnO2) is recognized as one of the most appropriate and promising anode materials. In this work, nanostructured MnO2 anode materials have been achieved via a hydrothermal method. The crystal structure, morphology and specific surface area of as-prepared MnO2 are characterized by XRD, SEM and BET techniques. As anode materials for lithium-ion batteries, MnO2 samples show high initial discharge capacity and relatively excellent cyclic performance. The electrochemical performance of MnO2 samples is related to crystal structure and surface morphology. Monoclinic structure, it is similar to graphene, which is more convenient for the fast ionic transportation into the bulk of the electrode materials. And porous structure, which can accommodate volume expansion, shorten the electron and lithium ion diffusion pathway and provide a large number of electrochemical reactive sites for lithium ion insertion and extraction during cycling.

引用

页码：11541 / 11547

页数：7