摘要
以Li2CO3,Ni(NO3)2,Co2O3和Mn O2为原料,经流变相法合成了锂离子电池正极材料Li Ni1/3Co1/3Mn1/3O2(1),其结构和形貌经XRD和SEM表征。考察了煅烧温度(T)和煅烧时间(t)对1Tt电化学性能的影响。采用乙炔黑作导电剂,制备了1Tt的锂离子正极材料(2Tt)。电化学性能测试结果表明:于800℃煅烧12 h制备的280012电化学性能最好。在充放电条件[2.5 V^4.5 V,0.2 C倍率]下,280012首次放电比容量为180 m Ah·g-1,循环性较好。
A positive electrode material, LiNi1/3 Co1/3 Mn1/3 02 （1）, was synthesized by the rheological phase method from Li2C03, Ni（ NO3 ）2, Co2O3 and MnO2. The structures and morphology were char- acterized by XRD and SEM. Effeets of calcination temprature （T） and calcination time （t） on the electrochemical properties of It/τ were investigated via electrochemical test. Lithiumion battery cathode materials（2tr） were prepared from It/τ by using acetylene black as the conductive agent. The results showed that 1 12/800 exhibited best electrochemical performance. The initial discharge capacity of 1 12/800 was 180 mAh ·g-1 under the conditions of 2.5 V -4.5 V and 0.2 C rate.1 12/800 also exhibited better cyc- ling performance.
出处
《合成化学》
CAS
CSCD
2015年第3期191-193,214,共4页
Chinese Journal of Synthetic Chemistry
基金
国家自然科学基金资助项目(51340210)
江苏省产学研前瞻项目(BY2014037-31)
关键词
锂离子电池
正极材料
流变相法
合成
电化学性能
Lithium ion battery
positive electode material
rheological phase reaction
synthesis
electrochemical property
