Mesoporous silicas tethered with anions as quasi-solid electrolytes for lithium-metal batteries.

Mesoporous silicas tethered with anions were developed as quasi-solid electrolytes for Li-metal batteries. The high grafted density of trifluoromethylsulfonyl (-NTf - ) groups and their uniformly distributed negative charge endow MCM41-NLiTf with a room temperature single Li-ion conductivity of up to 2.4 × 10 -4 S cm -1 , which enables stable cycling of LFP‖Li batteries.