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In the public domainenergyAssigned to Sanyo Electric Co., Ltd.

Lithium-ion battery

Lithium-ion battery cathode/anode material engineering that enables reversible lithium-ion doping and undoping unlocks corrosion-resistant cycling.

What it is

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.

What you could build

Develop corrosion-resistant lithium-ion battery packs for EV micro-mobility and stationary storage with reduced degradation and no royalty friction.

Patent number
7807299
Expiration
Invalid Da
Assignee
Sanyo Electric Co., Ltd.
Inventors
Shogo Hasegawa, Yosuke Morishita, Hiroshi Oikawa, Atsushi Okuyama

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