溶剂化
化学
电解质
锂(药物)
离子
无机化学
溶剂化壳
镁
隐溶剂化
物理化学
电极
有机化学
医学
内分泌学
作者
Masaki Okoshi,Yuki Yamada,Atsuo Yamada,Hiromi Nakai
出处
期刊:Journal of The Electrochemical Society
[The Electrochemical Society]
日期:2013-01-01
卷期号:160 (11): A2160-A2165
被引量:228
摘要
De-solvation of a Li ion at an electrode/electrolyte interface can be the rate-determining step of the reaction in lithium-ion secondary batteries. The present study theoretically evaluates the de-solvation energies of Li, Na, and Mg ions to organic electrolyte solvents. The Na-ion complexes revealed commonly smaller de-solvation energies compared to the Li-ion complexes due to the weaker Lewis acidity, while the solvation structures were similar to each other. The Mg-ion complexes showed remarkably larger de-solvation energies because of the double positive charge. The increase of coordination number, which was associated with the change in the solvation structure, was observed for the Mg-ion complexes. Detailed analysis revealed good correlations between the de-solvation energies and the electrostatic potentials made by the solvents, as well as the chemical hardness of the solvents.
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