![]() Polyurethane (PU) is a high-performance material that has been widely studied and applied. The wettability, thermal stability and dimensional stability of the electrolyte were improved by modifying PE and PP separators with a thin coating/doping of inorganic nanoparticles, ], which can improve the affinity with liquid electrolyte and battery safety. However, their poor affinity with liquid electrolytes, low porosity and poor thermal stability seriously affect the electrochemical performance of LIBs. ![]() ![]() Polyethylene (PE) and polyolefin (PP) are widely used in the separator of LIBs due to their good mechanical properties and chemical stability. The separator in LIBs plays a crucial role in preventing electron contact between positive and negative electrodes and Li + transmission, ]. Lithium-ion batteries (LIBs) have attracted more and more attention as a kind of efficient energy storage system due to high energy density and power density, ].
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