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. The anode material is fabricated according to methods that result in improved anode performance.
Claims7
A method of fabricating an anode comprising Li for energy storage devices, the method comprising:
- immersing powder particles comprising Li4Ti5O12 in a solution comprising a molar ratio of 1 to 3 of aluminum and fluorine;
- and
- calcining the solid powder to yield an AlF3-coated Li4Ti5O12 powder (AFLTO).
Dependencies are inferred from the claim text.