Title

Investigation of lithium tetrafluorooxalatophosphate as a lithium-ion battery electrolyte

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

Electrochemical and Solid-State Letters

Volume

12

Issue

8

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