Fluorinated Electrolytes for 5-V Li-Ion Chemistry: Probing Voltage Stability of Electrolytes with Electrochemical Floating Test. Issue 9 (12th June 2015)

• Record Type: Journal Article
• Authors: He, Meinan; Hu, Libo; Xue, Zheng; Su, Chi Cheung; Redfern, Paul; Curtiss, Larry A.; Polzin, Bryant; von Cresce, Arthur; Xu, Kang; Zhang, Zhengcheng
• Is Part Of: Journal of the Electrochemical Society. Volume 162:Issue 9(2015)
• Page Start: A1725
• Page End: A1729
• Publication Date: 2015-06-12
• Subjects: 5-V LiNi0.5Mn1.5O4 cathode -- electrochemical floating test -- Fluorinated electrolyte -- high voltage lithium-ion batteries -- oxidation stability; Electrochemistry -- Periodicals; 541.3705
• DOI: 10.1149/2.0231509jes
• Languages: English
• ISSNs: 0013-4651

Abstract

Abstract : A series of electrolyte formulations containing fluorinated cyclic carbonates and fluorinated linear carbonates with LiPF6 has been evaluated as electrolyte solvents for high-voltage Li-ion batteries. The anodic stability of the new electrolytes on fully charged spinel LiNi0.5 Mn1.5 O4 (LNMO) cathode was examined by electrochemical floating tests. The effects of fluorine substitution on the cyclic and linear carbonate, ratio of cyclic vs. linear carbonate, and LiPF6 concentration on the electrolyte oxidation stability were investigated. Based on this study, the floating test proved to be an effective tool for identification of stable electrolyte materials.