铝/石墨复合材料的制备及其电化学性能研究  

Preparation and electrochemical property of Al/graphite composite material

作　　者：史洪峰 王益 屈永浩 李庆余[2] 黄有国[2] 王红强[2] Shi Hongfeng;Wang Yi;Qu Yonghao;Li Qingyu;Huang Youguo;Wang Hongqiang(Anhui Yijiatong battery Co.,Ltd.,Xuancheng 242000;Guangxi Key Laboratory of Low-carbon Energy Materials,Guangxi Normal University,Guilin 541004)

机构地区：[1]安徽益佳通电池有限公司,宣城242000 [2]广西师范大学,广西低碳能源材料重点实验室,桂林541004

出　　处：《化工新型材料》2019年第10期236-239,共4页New Chemical Materials

基　　金：广西科学研究与技术开发计划（20150106-3，桂科攻1598008-14，桂科AA16380042）;国家自然科学基金（51364004）

摘　　要：铝作为负极材料其理论容量较高,但铝在充放电过程中会出现严重的体积膨胀,导致循环性能差。为克服铝体积膨胀严重的缺点,采用简单的球磨法成功制备出铝/石墨复合材料。利用X射线衍射仪、扫描电子显微镜对复合材料的结构和形貌进行分析。电化学性能测试表明,铝/石墨复合材料首次放电比容量高达1004mAh/g,循环15次后容量保持在300mAh/g。铝/石墨复合材料拥有较高的放电比容量和较好的循环性能,在锂离子电池负极材料中具有潜在的应用价值。Al has the advantages of high specific capacity as cathode materials,but in the process of charging and discharging,the volume expansion of Al is too large,resulting in poor looping performance.Al/graphite composite materials were successfully prepared by ball milling,and then the phase structure and characterization of the morphology were analyzed by X-ray diffractometer(XRD)and electron microscope(SEM)respectively.The electrochemical measurements demonstrated that the composites had great improved electrochemical performances in comparison with pure Al.For example,the initial discharge capacity was 1004mAh/g,and can deliver the reversible capacity of 300mAh/g after 15th cycle.This suggested that the Al/graphite composite had a potential possibility to be developed as cathode materials for lithium-ion batteries.

关 键 词：锂离子电池 球磨法 铝/石墨复合材料 

分 类 号：TM9[电气工程—电力电子与电力传动]