锂离子电池MnO/TiN负极研究

doi:10.61558/2993-074X.2877

电化学（中英文） ›› 2012, Vol. 18 ›› Issue (1): 37-42. doi: 10.61558/2993-074X.2877

锂离子电池MnO/TiN负极研究

许高洁^1,2, 杨海燕², 韩鹏献², 张立学², 张克军², 张传健², 范玉华¹*, 毕彩丰¹, 崔光磊²*

1.中国海洋大学化学化工学院，山东青岛 266100； 2.中国科学院青岛生物能源与过程研究所，山东青岛 266101

收稿日期:2011-10-27 修回日期:2011-11-09 出版日期:2012-02-28 发布日期:2011-11-30
通讯作者: 范玉华,崔光磊 E-mail:sjtufyh@sjtu.edu.cn; cuigl@qibebt.ac.cn
基金资助:
科技部重大研究计划（973 项目，No. MOST2011CB935700）、山东省杰出青年基金（No. BS2009NJ013）、国家自然科学基金项目（No. 20971077）资助

Preparation and Characterization of MnO/TiN Anode for Lithium Ion Batteries

XU Gao-Jie^1,2, YANG Hai-Yan², HAN Peng-Xian², ZHANG Li-Xue², ZHANG Ke-Jun², ZHANG Chuan-Jian², FAN Yu-Hua¹*, BI Cai-Feng¹, CUI Guang-Lei²*

1. College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, Shandong, China; 2. Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao 266101, Shandong, China

Received:2011-10-27 Revised:2011-11-09 Published:2012-02-28 Online:2011-11-30
Contact: FAN Yu-Hua, CUI Guang-Lei E-mail:sjtufyh@sjtu.edu.cn; cuigl@qibebt.ac.cn

摘要/Abstract

摘要： 以乙酸锰和钛酸四丁酯为原料，柠檬酸为络合剂，采用溶胶-凝胶法制备钛酸锰（MnTiO3）粉体，而后将其粉体高温氨气氮化，可得到MnO/TiN复合材料. 使用X射线衍射（XRD）、X射线能量色散谱（EDS）和场发射扫描电子显微镜（FESEM）表征材料的物相结构与组分、观察其形貌. 采用循环伏安、恒流充放电和电化学阻抗方法测试电极电化学性能. 结果表明，MnO/TiN电极在100 mA?g-1和1 A?g-1倍率放电下，比容量分别为394 mAh?g-1和146 mAh?g-1，均高于单纯MnO电极比容量和倍率性能，这归因于复合材料中的TiN提供了导电网络，并有效地抑制了电极在充放电过程中的体积膨胀效应.

关键词: 溶胶-凝胶法, 锂离子电池, 负极, 导电网络

Abstract: Manganese titanate (MnTiO3) powder was prepared via a sol-gel method using manganese acetate and tetrabutyl titanate as raw materials, and citric acid as a chelating agent. Through high temperature nitridation of MnTiO3 powder in ammonia, the MnO/TiN composite was obtained. The phase structure, composition and morphology of the composites were characterized by XRD, SEM and EDS. The electrochemical properties of the composite electrodes were studied by performing cyclic voltammetry, galvanostatic charge and discharge, and electrochemical impedance spectroscopy tests. The MnO/TiN electrode delivered specific capacities of 394 mAh?g-1 and 146 mAh?g-1 at the current density of 100 mA?g-1 and 1 A?g-1, respectively, and exhibited higher specific capacity and superior rate capability than MnO electrode, which can be ascribed to the presence of TiN in the composite offering an electron conducting network and suppressing the volume expansion of MnO efficiently during the charge and discharge processes.

Key words: sol-gel method, lithium ion batteries, anode, conducting network

中图分类号:

TM911

许高洁, 杨海燕, 韩鹏献, 张立学, 张克军, 张传健, 范玉华, 毕彩丰, 崔光磊. 锂离子电池MnO/TiN负极研究[J]. 电化学（中英文）, 2012, 18(1): 37-42.

XU Gao-Jie, YANG Hai-Yan, HAN Peng-Xian, ZHANG Li-Xue, ZHANG Ke-Jun, ZHANG Chuan-Jian, FAN Yu-Hua, BI Cai-Feng, CUI Guang-Lei. Preparation and Characterization of MnO/TiN Anode for Lithium Ion Batteries[J]. Journal of Electrochemistry, 2012, 18(1): 37-42.

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https://electrochem.xmu.edu.cn/CN/Y2012/V18/I1/37

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锂离子电池MnO/TiN负极研究

Preparation and Characterization of MnO/TiN Anode for Lithium Ion Batteries

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