LCS-FY2019-SR-01
[Survey Report] Investigation of Degradation Behavior of Lithium-Ion Battery
Summary
Lithium ion batteries differ in battery performance, including capacity reduction (degradation), greatly depending on the many possible combinations of positive and negative electrode materials. Furthermore, there are many parameters used for evaluating the degradation, such as temperature, charging rate, and charging / discharging speed.
In this report, the degradation characteristics under these various conditions are organized for the first time. We extracted degradation test data from published papers for the electrode combinations of Li(NixMnyCo1-x-y)O2 (NMC) and lithium iron phosphate (LFP) as the cathode material, and graphite and lithium titanite (LTO) as the anode material , which are combinations frequently used for stationary storage batteries and electric vehicles, and organized the resulting data by parameter for analysis.