泡沫镍上生长纳米片ZnCo_2O_4负极材料  

ZnCo_2O_4 nanoflake arrays grown on Ni foam as anode material

作　　者：赵豆豆[1,2] 汝强[1,2] 郭凌云[1,2] 胡社军[1,2] 

机构地区：[1]广东省高效绿色能源与环保材料工程技术研究中心,广东广州510006 [2]广东省量子调控工程与材料重点实验室华南师范大学物理与电信工程学院,广东广州510006

出　　处：《电池》2016年第2期61-64,共4页Battery Bimonthly

基　　金：国家自然科学基金(51101062;51171065);广州市科技计划项目(2011J4100075);广东高校优秀青年创新人才培育项目(LYM09052);广东省自然科学基金(S2012020010937;2014A030313436)

摘　　要：采用水热法和烧结法在泡沫镍基底上制备锂离子电池负极材料钴酸锌（ZnCo_2O_4）,用XRD、SEM分析物相结构与形貌,用恒流充放电、循环伏安测试电化学性能。合成的ZnCo_2O_4纳米薄片呈横竖交错的叶状。ZnCo_2O_4/泡沫镍复合电极可缓冲充放电过程中的体积膨胀效应,改善体系的循环性能。以100 m A/g的电流在0.01~3.00 V循环,首次放电比容量为1 301.7 mAh/g,首次库仑效率为85.5%,循环50次,可逆比容量仍保持在1 249.5 mAh/g。Zinc cobaltate（ ZnCo_2O_4） nanosheets were directly grown on nickel（ Ni） foam as electrode material for Li-ion battery by a facile hydrothermal method. The as-synthesized ZnCo_2O_4 was irregularity leaf-like composed of ultrathin nanoflakes. The phase structure and morphology of the products were characterized by using XRD and SEM. The electrochemical performance was tested by galvanostactic charge-discharge and cyclic voltammetry. ZnCo_2O_4/ Ni Foam（ ZCO / NF） composite structure could buffer the volume change during the cycling,which was beneficial to the improvement of the cycle performance. The initial specific discharge capacity was 1 301. 7 m Ah / g and the initial Coulombic efficiency was 85. 5% when cycled in 0. 01 ~ 3. 00 V with the current of 100 m A / g.The reversible specific capacity still maintained 1 249. 5 m Ah / g after 50 cycles.

关 键 词：钴酸锌(ZnCo2O4) 泡沫镍 纳米薄片 锂离子电池 

分 类 号：TB383.1[一般工业技术—材料科学与工程] TM912[电气工程—电力电子与电力传动]