Advanced lithium batteries with high safety and high energy density is vital to develop consumer electronics, electric vehicles and energy storage system. The combination of high-voltage cathode (i.e. LiCoO<sub>2</sub>, NCM, LNMO) and high-capacity lithium anode is a ideal way to develop high-energy density of lithium batteries. However, the comprehensive performance of high-voltage lithium metal battery is still hindered by several issues. It’s universally acknowledged that electrolytes play a critical role in rechargeable lithium batteries. Against that backdrop, we proposed “rigid-flexible coupling polymer electrolyte” design concept from the key polymer structures influencing ionic conductivity. Based on this, we demonstrated a series of polymer electrolytes (polycarbonate, polycyanoacrylate, poly(ether-maleic anhydride) and etc) for advanced lithium batteries. The obtained polymer electrolyte exhibited superior overall performance in terms of high ionic conductivity, wide electrochemical window and high lithium ion transference number. These extraordinary features represents a considerable advance in high-voltage polymer electrolyte and opens up a new avenue for the design and fabrication of advanced polymer electrolyte for high-voltage lithium metal battery. <br/>

Advanced electrolyte materials for high voltage lithium batteries

2019 Spring National Meeting

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