Electrolyte design weakens lithium-ion solvation for a fast-charging and long-cycling Si anode

Introducing low-binding-energy and moderate-dielectric-constant solvents (FEA/FEC) into a weak solvation electrolyte results in a high t Li + , low E a , and stable LiF-rich SEI, enhancing the fast-charging capability and cycling lifespan of Si anodes.