ISSN: 1003-6326
CN: 43-1239/TG
CODEN: TNMCEW

Vol. 27    No. 6    June 2017

Review of functional electrolyte for lithium-ion battery working in wide temperature scope
HONG Bo1, YAN Xiao-lin2, HONG Shu1, LAI Yan-qing2, LI Jie2, JIANG Feng1
(1. School of Materials Science and Engineering, Central South University, Changsha 410083, China;
2. School of Metallurgy and Environment, Central South University, Changsha 410083, China
)
Abstract: The degradation mechanism of lithium ion battery under low temperature was analyzed. The effect regularity of physical properties of solvent on low temperature performance of electrolyte was also described. Then, the research works of improving the low temperature performances of batteries by using low melting point and low viscosity solvent, low-impedance film-forming additives, new lithium salts were summarized. Meanwhile, the capacity attenuation mechanism of lithium ion battery under elevated temperature working conditions was also discussed. The main methods of improving the high temperature stability of lithium ion battery were reviewed, containing using high temperature film additive, high temperature lithium salt and lithium salt stabilizer. On these basis, the domain challenges and the development trend of lithium ion battery working in a wide temperature scope was prospected.
Key words: lithium-ion battery; wide-temperature electrolyte; low-temperature performance; high-temperature performance; linear carboxylic acid esters; additive
Superintended by The China Association for Science and Technology (CAST)
Sponsored by The Nonferrous Metals Society of China (NFSOC)
Managed by Central South University (CSU)