Analysis of the Decomposition Products of Lithium Hexafluorophosphate in the Electrolytic Solution of Lithium-Ion Rechargeable Batteries by Column-Switching Ion Chromatography

Introduction

Lithium hexafluorophosphate, which serves as the electrolytic solution in lithium-ion rechargeable batteries, is hydrolyzed by the small amounts of water contained in the electrolytic solution. Since fluoride ions formed as a result of the hydrolytic decomposition can affect battery performance, analysis of the decomposition products is necessary as part of the quality control process. Here, we introduce an analysis of the decomposition products of lithium hexafluorophosphate used as the electrolytic solution in lithium-ion rechargeable batteries, in which we constructed a column-switching system using the Shimadzu Prominence HIC-SP ion chromatography system.

June 16, 2011 GMT