Analysis of degradation products in electrolyte for rechargeable lithium-ion battery through high mass accuracy MSn and multivariate statistical technique

Rechargeable lithium-ion batteries are one of the major power sources for portable electronic devices and electric vehicles because of their high voltage and high energy density. The electrolyte of a lithium-ion battery is consisting of a lithium salt in an aprotic organic solvent. The typical operational potential of a lithium-ion battery is between 0 and 5 V. Therefore, solvent can be reduced or oxidizedat the negative and positive electrodes during the battery charging process. As a result, various degradation products are generated in electrolyte, and cause some problems such as a decrease in the capacitance of battery.
Here, we present the analysis method of degradation products generated in electrolyte using high mass accuracy MSⁿ and multivariate statistical technique.