摘要
研究LiNi1/3Co1/3Mn1/3O2正极材料在四种不同的电解液体系中(LiPF6/EC+DEC(1:1)、LiPF6/EC+DMC(1:1)、LiPF:6/EC+EMC(1:1)和LiPF:6/EC+Pc+DMC(1:1:1))的电化学性能,讨论了正极材料与电解液的相容性。结果表明在1mol·L-1LiPF6/EC+Pc+DMC(1:1:1)电解液体系中,2.8~4.6V电压范围内,LiNi1/3Co1/3Mn1/3O2的电化学性能最好,其首次放电比容量可达202.17mA·h·g-1,50次的容量保持率可达88.58%。
The effects of four different electrolyte system, LiPF6/EC + DEC ( 1 : 1 ), LiPF6/EC + DMC ( 1 : 1 ), LiPF6/EC + EMC ( 1 : 1 ) and LiPF6/EC + PC + DMC ( 1 : 1 : 1 ), on the performance of the cathode material LiNi1/3Co1/3Mn1/3O2 were investigated, the compatibility of the cathode material and the electrolytes was further investigated and compared. The results indicated that the cathode material used 1 mol · L-1 LiPF6/EC + PC + DMC (1: 1:1 ) as the electrolyte showed better electrochemical performance. Between 2.8 and 4.6V vs. Li/Li + , the initial discharge capacity of the LiNi1/3Co1/3Mn1/3O2 with 1 mol ·L-1LiPF6/EC + PC + DMC( 1: 1:1 ) electrolyte was 202.17 mA · h · g-1 and 88.58% of the initial discharge capacity was retained after 50 charge-discharge cycling.
出处
《硅酸盐通报》
CAS
CSCD
北大核心
2014年第1期69-73,共5页
Bulletin of the Chinese Ceramic Society
基金
吉林市科技支撑计划项目(2013324003)