优先溶剂化锂离子及其对锂空气电池中氧还原的影响。
Preferential Solvation of Lithium Cations and Impacts on Oxygen Reduction in Lithium-Air Batteries.
机构信息
Department of Mechanical Engineering, College of Engineering and Applied Science, University of Wisconsin-Milwaukee , Milwaukee, Wisconsin 53211, United States.
Department of Chemistry, School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology , Wuhan 430070, Hubei, People's Republic of China.
出版信息
ACS Appl Mater Interfaces. 2015 Sep 16;7(36):19923-9. doi: 10.1021/acsami.5b04005. Epub 2015 Sep 1.
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.
研究了 11 种常用作锂电池电解质的非水溶剂中锂离子的溶剂化作用。通过电喷雾质谱和碰撞诱导解离的方法比较了不同溶剂的溶剂化偏好。确定了锂离子溶剂化的相对强度。溶剂在溶剂化壳中的优先溶剂化确定了溶剂化锂离子的路易斯酸度。O2•-的催化歧化反应的动力学取决于溶剂化锂离子的相对路易斯酸度。还研究了溶剂化锂离子对 O2 氧化还原反应的影响。
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