储能科学与技术 ›› 2017, Vol. 6 ›› Issue (S1): 21-.doi: 10.12028/j.issn.2095-4239.2017.0112

• 特约文章 • 上一篇    下一篇

锂离子电池Al2O3-SiO/C负极材料的制备和电化学性能

李亚飞，贺劲鑫，郑媛媛，靳承铀，缪永华，薛  驰   

  1. 江苏中天科技股份有限公司，江苏 南通 226009
  • 收稿日期:2017-06-24 修回日期:2017-07-30 出版日期:2017-10-01 发布日期:2017-10-01
  • 通讯作者: 靳承铀，高级工程师，主要研究方向电池材料、器件及系统开发，E-mail：jincy@chinaztt.com。
  • 作者简介:李亚飞（1990—），男，硕士，主要研究方向为电池材料开发，E-mail：liyf@chinaztt.com；

Preparation and electrochemical performance of Al2O3-SiO/C anode material for lithium ion batteries

LI Yafei, HE Jinxin, ZHENG Yuanyuan, JIN Chengyou, MIAO Yonghua, XUE Chi   

  1. Jiangsu Zhongtian Technology Co., Ltd, Nantong 226009, Jiangsu, China
  • Received:2017-06-24 Revised:2017-07-30 Online:2017-10-01 Published:2017-10-01

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摘要：

本文首先以SiO、沥青为原料，制备了SiO/C复合材料。然后以SiO/C复合材料，硝酸铝，氨水，尿素为原料，利用水浴加热和高温热处理的方法，制备出了Al2O3-SiO/C复合材料。采用激光粒度分析、比表面积测试仪、XRD、SEM对样品进行了物相结构分析和微观形貌的表征测试。电化学测试表明：加入尿素的Al2O3-SiO/C复合材料具有最佳电化学性能，首次效率高达74.81%，充电比容量为1436.4 mA·h/g，表现了优异的电化学性能。

关键词: Al2O3-SiO/C复合材料, 锂离子电池, 负极材料

Abstract:

 The SiO/C composites were synthesized via a simple stirring and following pyrolysis of silicon monoxide and pitch mixture. Then Al2O3-SiO/C composites were prepared by water bath heating and the thermal decomposition using SiO/C composites, aluminium nitrate, ammonia solution, urea as raw materials. The phase composition, morphology and structure of the samples were characterized by XRD, SEM, specific surface area and laser particle analyzer. As a result, the electrochemical performance indicated the Al2O3-SiO/C composites with the urea had the best electrochemical performance and exhibited the reversible capacity of 1436.4 mA·h·g1 and 74.81% coulombic efficiency in the initial cycle.

Key words:  Al2O3-SiO/C composite material, lithium ion batteries, anode materials