By coupling the lithium-concentration field distribution and the force model in the electrochemical model, we can achieve the electric performance analysis and simulation analysis of battery particles, the electrode, and battery stress under constant current charging and discharging conditions and variable current conditions;
The routine diaphragm has a general affinity for organic electrolytes, but its good wettability and liquid retention greatly impact the performance of lithium-ion batteries.
SEM-EDS mapping of zinc borate modified diaphragm. The thermal stability of the diaphragm is an important criterion for ensuring battery safety, and the thermal shrinkage test is usually used to evaluate the dimensional thermal stability of the poly (vinylidene fluoride) diaphragms for next‐generation lithium-based batteries .
The zinc borate modified diaphragm was used as the structural-functional ceramic composite diaphragm, and the zinc borate and PVDF were prepared at a mass ratio of 90:10, and the ordinary diaphragm and the zinc oxide modified diaphragm were used as comparison samples. The battery electrolyte was 1 M LiPF6 in EC/DEC (1:1 vol ratio).
By coupling the battery’s P2D model with a magnetic field model, a lithium battery-magnetic field coupling model is introduced. This model can calculate the magnetic field distribution around the battery during charge and discharge processes.
Therefore, the research on the diaphragm is an important direction related to the performance of the lithium-ion battery. In recent years, the functional design of the diaphragm is usually the method of surface modification of the common diaphragm, adding the intermediate layer and self-constructing the diaphragm, etc.