Electrolytic characteristics of mixed solvent electrolytes for lithium secondary batteries

✍ Scribed by Shin-ichi Tobishima; Akihiko Yamaji

• Publisher: Elsevier Science
• Year: 1983
• Tongue: English
• Weight: 477 KB
• Volume: 28
• Category: Article
• ISSN: 0013-4686
• DOI: 10.1016/0013-4686(83)80010-3

✦ Synopsis

Measurements on conductivity

and I_] chargedischarge eRictency m various propylene cerbonate (PC)-based electrolytes were carried out to obtam electrolytes for Li secondary batteries. Among the electrolytes examined, 2 M LiCIO,-PC-THF (PC/THF volume ratio = 4/6) showed 1.6 times higher conductivity of 9.8 x 10m3 R-l cm-' and also ca. 10 "/, higher Li chargedischarge efficiency of 81.3 "/, at 5 mAcm_* (0.3 Ccm-') than those in 1 M LiClO,-PC. Generally, Li cycling efliciency increases with increase in electrolyte conductivity. From the analysis made on electrolytic parameters, such as transport number of L,i+ ion, it was concluded that conductivity and Li cycling efficiency increases were caused by the total effects of lower chemical reactivity ofTHF to Li and smaller practical Li+ ion radius based on Li+-THF complex formation the Symposia OH Power Sources For Binchemral Implantable Applrcatinns and Ambient Temperature