溶剂化
化学
离子
锂(药物)
溶剂
氧气
溶解度
物理化学
无机化学
分析化学(期刊)
色谱法
医学
内分泌学
有机化学
作者
David G. Kwabi,Vyacheslav S. Bryantsev,Thomas P. Batcho,Daniil M. Itkis,Carl V. Thompson,Yang Shao‐Horn
标识
DOI:10.1002/anie.201509143
摘要
Abstract Understanding and controlling the kinetics of O 2 reduction in the presence of Li + ‐containing aprotic solvents, to either Li + ‐O 2 − by one‐electron reduction or Li 2 O 2 by two‐electron reduction, is instrumental to enhance the discharge voltage and capacity of aprotic Li‐O 2 batteries. Standard potentials of O 2 /Li + ‐O 2 − and O 2 /O 2 − were experimentally measured and computed using a mixed cluster‐continuum model of ion solvation. Increasing combined solvation of Li + and O 2 − was found to lower the coupling of Li + ‐O 2 − and the difference between O 2 /Li + ‐O 2 − and O 2 /O 2 − potentials. The solvation energy of Li + trended with donor number (DN), and varied greater than that of O 2 − ions, which correlated with acceptor number (AN), explaining a previously reported correlation between Li + ‐O 2 − solubility and DN. These results highlight the importance of the interplay between ion–solvent and ion–ion interactions for manipulating the energetics of intermediate species produced in aprotic metal–oxygen batteries.
科研通智能强力驱动
Strongly Powered by AbleSci AI