摘要
固体核磁共振(NMR)技术可探测固态材料中目标原子核周围的化学环境,是一种研究短程结构信息灵敏的表征手段.通过高转速魔角旋转6,7Li NMR谱,2D6,7Li EXSY谱以及弛豫时间T1,T2的测定,可获得锂离子电池电极/电解质材料的微观结构和离子扩散动力学信息,并可用于研究锂离子电池正负极材料在充放电过程中的结构变化,为锂离子电池电极/电解质材料的设计与发展提供理论支持.本文综述了近年来固体NMR技术在锂离子电池正负极材料、固体电解质及固体电解质界面膜(SEI)研究中的应用和发展.
Solid state NMR can probe the surrounding chemical environment of nucleus in the solid materials, which is a useful characterization tool for studying the local structure informations. Through high magic angle spinning (MAS) 6.7Li NMR, 2D 6.7Li EXSY spectra and the testing of T1, T2, we can analyze the microstructures of batteries electrode/electrolyte materials and the dynamics of lithium ions, therefor understand the structure evolution of cathode/anode materials over charge/discharge process, which provides a theoretical support for the design and development of electrode/electrolyte materials for lithium-ion batteries. In this paper, we review the recent development and application of solid state NMR techniques in the study of cathode/anode, solid electrolyte materials and solid electrolyte interface film.
出处
《科学通报》
EI
CAS
CSCD
北大核心
2013年第32期3287-3300,共14页
Chinese Science Bulletin
基金
国家重点基础发展研究计划(2011CB935903)
国家自然科学基金重点项目(21233004)资助