Co_3O_4对铝负极材料电化学性能的影响  

Effects of Co_3O_4 on electrochemical properties of Al anode material

作　　者：雷雪峰[1] 马军现[1] 任丽彬[2] 时喜喜[2] 孙延一[1] 

机构地区：[1]电子科技大学中山学院化学与生物系,广东中山528402 [2]中国电子科技集团公司第十八研究所重点实验室,天津300381

出　　处：《电源技术》2011年第7期778-779,783,共3页Chinese Journal of Power Sources

基　　金：广东省自然科学基金(8452840301001692);电子科技大学中山学院科研启动基金(2007YKQ16)

摘　　要：以平均粒径为15μm的球状铝粉作基体,采用流变相反应与热处理相结合的方法合成了C o3O 4-Al复合材料,并通过XR D、SEM、粒度分布及充放电循环等手段对材料进行了分析测试。结果表明,采用该法合成的C o3O 4为纳米颗粒,且均匀地包覆在铝球表面。C o3O 4的加入改善了纯铝负极的循环稳定性。当C o3O 4含量为3%(质量分数)时,复合材料的充放电比容量及循环性能最优。Al-Co3O4 composites were synthesized by a rheological phase reaction in combination with a following heat-treatment process using the aluminum spherules with particle size of 15 mm as matrix.XRD,SEM,particle size analysis and charge-discharge cycle were used to evaluate the obtained composites.The results show that the obtained Co3O4 are nanoparticles and deposited on the surface of Al matrix homogeneously.The participation of Co3O4 improves the cycle performance of pure Al.The composite displays the optimized discharge-charge capacity and cycle performance when the content of Co3O4 reaches 3%.

关 键 词：锂离子电池 铝 负极材料 改性 

分 类 号：TM912.9[电气工程—电力电子与电力传动]