title: Studies on electrochemical performances of novel electrolytes for wide-temperature-range lithium-ion batteries.
abstract: Wide-temperature electrochemical behaviors of sulfolane (SL) with lithium difluoro(oxalato)borate (LiODFB) are studied using dimethyl sulfite (DMS) and diethyl sulfite (DES) as mixed solvents, respectively. In LiFePO4/Li cells, LiODFB-SL/DMS and LiODFB-SL/DES electrolytes always exert several advantages over a wide temperature range, such as stable cycling performance and good rate performance. Besides, in Li/mesophase carbon microbead cells, these novel electrolytes respectively exhibit excellent film-forming characteristics at both +60 and -20 °C, such as the formation of a stable and conductive SEI layer. It suggests that LiODFB-SL/DMS and LiODFB-SL/DES electrolytes are alterative candidate electrolytes for wide-temperature-range lithium-ion batteries.
authors.affiliation: College of Petrochemical Technology, Lanzhou University of Technology , Lanzhou 730050, China.
authors.forename: Shiyou
authors.initials: S
authors.lastname: Li
authors.forename: Wei
authors.initials: W
authors.lastname: Zhao
authors.forename: Zhifang
authors.initials: Z
authors.lastname: Zhou
authors.forename: Xiaoling
authors.initials: X
authors.lastname: Cui
authors.forename: Zhichao
authors.initials: Z
authors.lastname: Shang
authors.forename: Haining
authors.initials: H
authors.lastname: Liu
authors.forename: Dongqiang
authors.initials: D
authors.lastname: Zhang