Preferential Solvation of Lithium Cations and Impacts on Oxygen Reduction in Lithium鈥揂ir Batteries

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• 作者：Dong Zheng ; Deyu Qu ; Xiao-Qing Yang ; Hung-Sui Lee ; Deyang Qu
• 刊名：ACS Applied Materials & Interfaces
• 出版年：2015
• 出版时间：September 16, 2015
• 年：2015
• 卷：7
• 期：36
• 页码：19923-19929
• 全文大小：365K
• ISSN：1944-8252

文摘

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^{鈥⑩€?/sup> 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.}