Analysis of Electrolyte Solution in Lithium Ion Rechargeable Battery (LIRB) and Evolved Gas from LIRB

Introduction

The electrolyte solution in a lithium ion rechargeable battery consists of an organic solvent (consisting chiefly of carbonates), the electrolyte, and additives. Evaluation of the electrolyte solution and analysis of its deterioration due to repetitive charge/discharge cycles is important for the further development of the lithium ion rechargeable battery. GC-MS is applicable for composition analysis of the electrolyte solution, and for analysis of components in the electrolyte solution that have been generated due to repeated charging and discharging. This Application News introduces examples of analysis of the electrolyte solution of a lithium ion rechargeable battery and of the gas evolved from a cell that has been maintained at a high temperature.

September 5, 2011 GMT