CAJ | 학술논문

综述了金属锂二次电池中锂电极/液态有机电解液界面的研究进展.介绍了金属锂/有机电解液界面锂枝晶的形成原理和充放电制度对锂枝晶生长的影响,有机电解液组成以及锂合金添加剂对锂界面膜形貌、结构组成和电化学稳定性的影响,以及锂电极的界面膜形貌与循环性能之间的相互关系.基于1,3-二氧戊环溶剂的三氟甲基磺酸亚胺锂电解液,特别是掺杂Al~(3+)、Mg~(2+)、Ca~(2+)等金属离子能显著增强锂电极界面膜的稳定性,提高金属锂电极的循环性能.
종술료금속리이차전지중리전겁/액태유궤전해액계면적연구진전.개소료금속리/유궤전해액계면리지정적형성원리화충방전제도대리지정생장적영향,유궤전해액조성이급리합금첨가제대리계면막형모、결구조성화전화학은정성적영향,이급리전겁적계면막형모여순배성능지간적상호관계.기우1,3-이양무배용제적삼불갑기광산아알리전해액,특별시참잡Al~(3+)、Mg~(2+)、Ca~(2+)등금속리자능현저증강리전겁계면막적은정성,제고금속리전겁적순배성능.
The recent advances in the research of interface between lithium electrode and liquid organic electrolytes in metal lithium secondary batteries were reviewed. The mechanism of dendrite growth between lithium electrode and liquid organic electrolytes was introduced, and the effects of charge-discharge method on the lithium dendrite growth,the effects of the solution composition and lithium-alloy additives on the morphology, structure and electrochemical stability, and the relation between interface morphology and cycling performance were also discussed. The electrolytes based on 1,3-dioxolane and lithium bis (trifluoromethanesulfonyl)imide [LiN (C_2F_5SO_2)_2], especially by doping metal ions (Al~(3+), Mg~(2+), Ca~(2+), etc) could considerably increase the stability of lithium interface film and consequently improve the property of lithium electrode.