Thermal behavior and microstructures of cathodes for liquid electrolyte-based lithium batteries.

ABSTRACT: Lithium-ion batteries are widely used as a power source for portable equipment. However, the use of highly flammable organic solvents in the liquid electrolyte component in these batteries presents a serious safety concern. In this study, the thermal stability of battery cathodes comprising LiNi_1/3Mn_1/3Co_1/3O₂ (NMC) and LiPF₆-based electrolyte solutions have been investigated using transmission electron microscopy (TEM) and differential scanning calorimetry (DSC) methods. Ex situ TEM measurements revealed that significant structural change occurred in the charged NMC composite after heating at a temperature above the exothermal peaks. It was found that LiF nanocrystallites precipitated in LiPF₆ and that a number of nanoscale

SUBMITTER: Tsukasaki H 

PROVIDER: S-EPMC6199343 | biostudies-literature | 2018 Oct

REPOSITORIES: biostudies-literature