Investigation of lithium tetrafluorooxalatophosphate as a lithium-ion battery electrolyte

Authors

Mengqing Xu, University of Rhode Island
Ang Xiao, University of Rhode Island
Weishan Li, South China University of Technology
Brett L. Lucht, University of Rhode IslandFollow

Document Type

Article

Date of Original Version

6-29-2009

Abstract

A lithium tetrafluorooxalatophosphate [LiPF4 (C2 O4)] salt, was prepared and its properties as a lithium-ion battery electrolyte were investigated. The conductivity, electrochemical stability, and cycling performance of 1.0 M LiPF4 (C2 O4) in 1:1:1 ethylene carbonate/dimethyl carbonate/diethyl carbonate are comparable to the industry standard LiPF6 electrolyte. While the reversible capacity of the first cycle is lower than LiPF6 -based electrolytes, the reversible cycling efficiency is equivalent. Electrochemical impedance spectroscopy and electrode surface analysis provide insight into the differences between LiPF6 and LiPF4 (C2 O4). © 2009 The Electrochemical Society.

Publication Title, e.g., Journal

Electrochemical and Solid-State Letters

Volume

12

Issue

8

Citation/Publisher Attribution

Xu, Mengqing, Ang Xiao, Weishan Li, and Brett L. Lucht. "Investigation of lithium tetrafluorooxalatophosphate as a lithium-ion battery electrolyte." Electrochemical and Solid-State Letters 12, 8 (2009). doi: 10.1149/1.3134462.