Metal Fluoride Electrode Protection Layer and Method of Making Same
AssigneeBattelle Memorial Institute
InventorsWu Xu, Wei Wang, Zhenguo Yang, Jiguang Zhang, Daiwon Choi
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Abstract
Modifications to the surface of an electrode and/or the surfaces of the electrode material can improve battery performance. For example, the modifications can improve the capacity, rate capability and long cycle stability of the electrode and/or may minimize undesirable catalytic effects. In one instance, metal-ion batteries can have an anode that is coated, at least in part, with a metal fluoride protection layer. The protection layer is preferably less than 100 nm in thickness.
Claims17
A metal-ion battery having an anode, the anode characterized by an anode material coated, at least in part, with a protection layer comprising a metal fluoride, the protection layer having a thickness less than 100 nm.
A lithium-ion battery having an anode, the anode characterized by a titanium oxide based material coated, at least in part, with a protection layer comprising AlF3, the protection layer having a thickness less than 100 nm.
An electrode in a sodium-ion battery, the electrode characterized by an electrode material coated, at least in part, with a protection layer comprising metal fluoride, the protection layer having a thickness less than 100 nm.
The electrode of claim 17, wherein the metal fluoride comprises aluminum fluoride.
Dependencies are inferred from the claim text.