Effects of pored separator films at the anode and cathode sides on concentration changes of electrolyte salt in lithium ion batteries. (7th November 2017)

• Record Type: Journal Article
• Authors: Yamanaka, Toshiro; Nakagawa, Hiroe; Tsubouchi, Shigetaka; Domi, Yasuhiro; Doi, Takayuki; Abe, Takeshi; Ogumi, Zempachi
• Is Part Of: Japanese journal of applied physics. Volume 56:Number 12(2017)
• Publication Date: 2017-11-07
• Subjects: Physics -- Periodicals; 621.05
• DOI: 10.7567/JJAP.56.128002
• Languages: English
• ISSNs: 0021-4922

Abstract

Abstract: The concentration change of ions in the electrolyte solution in deep narrow spaces between electrodes in batteries was studied by in situ multi-probe Raman spectroscopy. When two separator films were placed at the anode and cathode sides, the concentration change became greater, suggesting that the resistance for ion migration at the anode side increased more than that at the cathode side. Thus, there seems to be a concerted effect of the surface film at the anode [solid electrolyte interphase (SEI)] and the adjacent separator film to form an effective diffusion barrier for Li + .