High performance porous MnO@C composite anode materials for lithium-ion batteries
发布时间：2019-03-13
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- 论文类型：
- 期刊论文
- 发表时间：
- 2016-01-10
- 发表刊物：
- ELECTROCHIMICA ACTA
- 收录刊物：
- EI、SCIE
- 文献类型：
- J
- 卷号：
- 188
- 页面范围：
- 793-800
- ISSN号：
- 0013-4686
- 关键字：
- MnO@C composite; Porous structure; Precipitation; Glucose; Lithium-ion batteries
- 摘要：
- MnC2O4 precursor was prepared by a precipitation method, and then porous MnO@C composites were obtained by mixing MnC2O4 precursor with different amounts of glucose and sintering at different temperatures. The influences of carbon content and crystallinity on the electrochemical performance of MnO@C were investigated. Galvanostatic charge-discharge test results showed that the MnO@C sample "1.2,700" has the largest specific capacity among all samples, which can reach high specific discharge capacity of 1691 mAhg(-1) at the current density of 100 mAg(-1) after 200 cycles. Even at the high current density of 1600 mA g(-1), a remarkable discharge capacity of 630 mAhg(-1) can still be delivered, demonstrating a good rate capability. The excellent electrochemical performance can be ascribed to porous structure, good crystallinity and proper amount of carbon coating. This facile method can be applied to the large-scale synthesis of high performance transition metal oxide@carbon composite electrode materials. (C) 2015 Elsevier Ltd. All rights reserved.
- 第一作者
- Li, Keyan
- 合写作者
- Shua, Fenfen,Guo, Xinwen,Xue, Dongfeng
- 通讯作者
- Guo, XW (reprint author), Dalian Univ Technol, Sch Chem Engn, PSU DUT Joint Ctr Energy Res, State Key Lab Fine Chem, Dalian 116024, Peoples R China.; Xue, DF (reprint author), Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Rare Earth Resource Utilizat, Changchun 130022, Peoples R China.