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材料导报  2019, Vol. 33 Issue (Z2): 38-42    
  无机非金属及其复合材料 |
多孔碳添加量对溶胶凝胶-碳热还原法制备磷酸钒锂正极材料的电化学影响
欧先国, 周玉山, 毛文峰, 顾晓瑜, 长世勇, 裴锋
广州汽车集团股份有限公司汽车工程研究院,广州 510641
Effects of the Porous Carbon Added Content on Electrochemical Performanceof Lithium Vanadium Phosphate as Cathode Materials Synthesized by Sol-geland Carbon Thermal Reduction Method
OU Xianguo, ZHOU Yushan, MAO Wenfeng, GU Xiaoyu, CHANG Shiyong, PEI Feng
GAC Automotive Research & Development Center, Guangzhou 510641
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摘要 本工作采用一种具有良好导电性能的多孔结构碳材料与磷酸钒锂通过溶胶凝胶-碳热还原法进行复合,研制出一种锂离子电池正极的新型复合材料。新型电极在0.5C倍率下初始比容量为111.0 mA·h·g-1,150圈循环容量保持率为99.2%。在10C倍率循环下复合正极仍有79.8 mA·h·g-1比容量和71.9%容量保持率,展示出良好的快充/放性能。复合材料的制备工艺简单,其电化学性能优异和较高含量的磷酸钒锂(LVP)含量符合锂离子电池正极材料的产业实用化的要求,该材料的研发为快充电池工业化提供了一种具有实际意义的材料。
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欧先国
周玉山
毛文峰
顾晓瑜
长世勇
裴锋
关键词:  多孔碳  溶胶凝胶-碳热还原法  磷酸钒锂  正极材料    
Abstract: In this paper, a novel composite as cathode material for lithium-ion batteries is preparaed by using a sol-gel and carbon thermal reduction me-thod to combine a good electrical conductive porous carbon with lithium vanadium phosphate. The new cathode has an initial specific capacity of 111.0 mA·h·g-1, and a capacity retention rate of 99.2% after 150 cycles at a rate of 0.5C. The composite cathode still has a specific capacity of 79.8 mA·h·g-1 and a capacity retention of 71.9% at 10C, showing a good fast charge/discharge performance. The simple preparation process, excellent electrochemical performance and high LVP content satisfies the requirements of the industrial applications for cathode materials on lithium-ion battery, and the composite is a effective material for the industrialization of the fast charge battery.
Key words:  porous carbon    sol-gel and carbon thermal reduction method    lithium vanadium phosphate    cathode materials
               出版日期:  2019-11-25      发布日期:  2019-11-25
ZTFLH:  TM911  
通讯作者:  zys_guangqi@126.com   
作者简介:  欧先国,2017年3月在北京理工大学获得硕士学位。2017年4月至今在广州汽车集团股份有限公司汽车工程研究院任工程师,主要从事锂电池正极材料的研究。
周玉山,广汽集团汽车工程研究院,主任工程师。2005年毕业于华南理工大学机械工程学院,机械设计博士学位,2007年自华南理工大学材料加工工程博士后流动站出站。主要从事新能源汽车动力系统开发及新型锂电池开发,曾负责广汽集团首款新能源汽车研发项目、首款燃料电池概念车研发项目,首款纯电动物流车型开发项目等。在国内外重要期刊发表文章20多篇,申报专利10余项。
引用本文:    
欧先国, 周玉山, 毛文峰, 顾晓瑜, 长世勇, 裴锋. 多孔碳添加量对溶胶凝胶-碳热还原法制备磷酸钒锂正极材料的电化学影响[J]. 材料导报, 2019, 33(Z2): 38-42.
OU Xianguo, ZHOU Yushan, MAO Wenfeng, GU Xiaoyu, CHANG Shiyong, PEI Feng. Effects of the Porous Carbon Added Content on Electrochemical Performanceof Lithium Vanadium Phosphate as Cathode Materials Synthesized by Sol-geland Carbon Thermal Reduction Method. Materials Reports, 2019, 33(Z2): 38-42.
链接本文:  
http://www.mater-rep.com/CN/  或          http://www.mater-rep.com/CN/Y2019/V33/IZ2/38
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