Lithium-ion battery cathode/anode material engineering that enables reversible lithium-ion doping and undoping unlocks corrosion-resistant cycling.
The patent configures three active materials so lithium ions can be doped into and undoped from the electrode system during charge and discharge while controlling reactions around the negative current collector. The key technical boundary is using a second active material that operates with capacity below the current-collector corrosion potential but above the decomposition potential of the first active material. That combination previously required licensing to use that specific electrochemical window and multilayer material arrangement for longer cycle life without accelerated collector corrosion.
Develop corrosion-resistant lithium-ion battery packs for EV micro-mobility and stationary storage with reduced degradation and no royalty friction.
The first active material, second active material, and third active materials are configured to allow doping and undoping of lithium ions. The second active material exhibits charging and discharging capacity below a corrosion potential of the negative current collector and above a decomposition potential of the first active material.
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