摘要
将化学计量比的前驱体Ni0.35Mn0.65（OH）2与Li2CO3均匀混合,采用不同高温段温度合成Li1.35[Ni0.35Mn0.65]O2＋y富锂锰基正极材料。对合成的材料进行表征,结果表明：所合成的Li1.35[Ni0.35Mn0.65]O2＋y正极材料为均匀的类球形,单颗粒大小均匀;XRD图谱显示材料为层状的α-Na Fe O2结构。将材料组装成CR2016扣式电池,采用蓝电测试仪以12.5 m A/g的电流密度进行充放电测试,2.0~4.8 V之间,最高初始放电比容量为198.0 m Ah/g,首次放电效率为69.7%。
Li1. 35[Ni0. 35Mn0. 65]O2 ＋ ywas synthesized by sintering the stoichiometric mixture of Ni0. 35Mn0. 65（ OH）2and Li2CO3 at different high temperatures. The analyzing characterization for the synthesized product showed that Li1. 35[Ni0. 35Mn0. 65]O2 ＋ ywere homogeneous spherical particles with uniform size,and the XRD indicated the layered α-Na Fe O2 structure in the material. A charge-discharge test was then conducted by Land tester at 12. 5 m A / g current density with the material assembled into CR2016 button cell. It was shown that the highest initial discharge capacity and initial discharge efficiency were 198. 0 m Ah / g and 69. 7% at 2. 0 ~ 4. 8 V,respectively.
出处
《矿冶工程》
CAS
CSCD
北大核心
2015年第3期135-137,140,共4页
Mining and Metallurgical Engineering
基金
转制科研院所创新能力专项经费(2014EG113173)
