title: Preferential Solvation of Lithium Cations and Impacts on Oxygen Reduction in Lithium-Air Batteries.
abstract: The solvation of Li+ with 11 nonaqueous solvents commonly used as electrolytes for lithium batteries was studied. The solvation preferences of different solvents were compared by means of electrospray mass spectrometry and collision-induced dissociation. The relative strength of the solvent for the solvation of Li+ was determined. The Lewis acidity of the solvated Li+ cations was determined by the preferential solvation of the solvent in the solvation shell. The kinetics of the catalytic disproportionation of the O2•- depends on the relative Lewis acidity of the solvated Li+ ion. The impact of the solvated Li+ cation on the O2 redox reaction was also investigated.
authors: Department of Mechanical Engineering, College of Engineering and Applied Science, University of Wisconsin-Milwaukee , Milwaukee, Wisconsin 53211, United States.
authors: Dong
authors: D
authors: Zheng
authors: Department of Chemistry, School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology , Wuhan 430070, Hubei, People's Republic of China.
authors: Deyu
authors: D
authors: Qu
authors: Chemistry Department, Brookhaven National Laboratory , Upton, New York 11973, United States.
authors: Xiao-Qing
authors: XQ
authors: Yang
authors: Chemistry Department, Brookhaven National Laboratory , Upton, New York 11973, United States.
authors: Hung-Sui
authors: HS
authors: Lee
authors: Department of Mechanical Engineering, College of Engineering and Applied Science, University of Wisconsin-Milwaukee , Milwaukee, Wisconsin 53211, United States.
authors: Deyang
authors: D
authors: Qu
keywords: ESI-MS; lithium ion; oxygen reduction; solvation; superoxide