摘要
本文以交流电电化学法获得的超细纳米TiO_2为前驱体,采用固相法合成了纳米尖晶石Li_4Ti_5O_(12)材料。电化学测试表明该法合成的纳米钛酸锂用于锂离子电池负极材料具有优异的循环性能和倍率性能。10 C下400次充放电循环后容量保持率为90.0%,大电流密度50 C下其放电比容量达到56.7 mAh/g。
In this paper, spinel nano-Li4 Ti5 O12 is fabricated through solid-state reaction taking electrochemically-obtained ultrafine TiO2 nanoparticles as the precursor. When tested as anode materials for lithium-ion batteries, the as-obtained spinel nano-Li4 Ti5 O12 shows excellent cycling stability(the capacity retention ratios after 400 cycles at 10 C is 90.0 %) and outstanding rate capability(56.7 mAh/g at 50 C).
作者
杨应昌
廖世佳
张树容
Yang Yingchang;Liao Shijia;Zhang Shurong(College of Material and Chemical Engineering,Tongren University,Tongren 554300,China)
出处
《广东化工》
CAS
2019年第6期34-35,共2页
Guangdong Chemical Industry
基金
贵州省科技厅基础研究计划(黔科合基础[2017]1185
黔科合基础[2018]1164)
关键词
钛酸锂
负极材料
锂离子电池
lithium titanate
anode materials
lithium-ion battery
