文章摘要
石青锋,吴显明.锂离子电池负极材料Li4Ti4.9Ni0.1O12的制备及其电化学性能研究[J].精细化工,2019,36(6):
锂离子电池负极材料Li4Ti4.9Ni0.1O12的制备及其电化学性能研究
Preparation and Electrochemical Performance of Lithium Ion Battery cathode Materials Li4Ti4.9Ni0.1O12
投稿时间:2018-09-11  修订日期:2019-01-15
DOI:
中文关键词: 锂离子电池  Li4Ti5O12  固相法  离子掺杂  电化学性能
英文关键词: lithium-ion batteries  Li4Ti5O12  solid-state  Ion-doped  Electrochemical Performance
基金项目:国家自然科学基金项目(51762016)
作者单位E-mail
石青锋 吉首大学化学化工学院 807860742@qq.com 
吴显明 吉首大学化学化工学院 xianmingwu@163.com 
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中文摘要:
      以 Li2CO3、TiO2、Ni(CH3COO)2.4H2O为原料,采用固相法制备尖晶石型Li4Ti4.9Ni0.1O12锂离子负极材料。通过X射线衍射(XRD)、扫描电镜(SEM)、恒流充放电测试以及交流阻抗等技术对材料进行结构、形貌及电化学性能测试。研究结果表明,制备出的Li4Ti4.9Ni0.1O12材料无杂质相,颗粒大小均匀,在0.5C下首次放电比容量为173.3mAh g-1,库伦效率为97.4%,50次循环后,材料放电比容量为163.4mAh g-1,容量保持率为94.3%。
英文摘要:
      The spinel Li4Ti4.9Ni0.1O12 anode material for lithium-ion batteries were successfully synthesized by solid-state reaction method using Ti(OC4H9)4, CH3COOLi?2H2O and Ni(CH3COO)2?4H2O as raw materials.The crystalline structure, morphology and electrochemical properties of the obtained materials were characterized by XRD, SEM, half cell charge-discharge tests and AC impedance. The results showed that The synthesized Li4Ti4.9Ni0.1O12 composite particles were homogeneous without impure phase. The first discharge capacity was 173.3mAh g-1 and coulombic efficiency was 97.4% at 0.5 C rate.The specific capacity remained163.4mAh g-1 after 50 cycles with a capacity retention of 94.3%。
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