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US 2019/0074508 A1Published application
Composite anode material including encapsulated buffered active material particles
AssigneeSinode Systems, Inc.
InventorsSeonbaek HA, Cary M. HAYNER, Joshua J. LAU, James MCKINNEY, Francis WANG, Woo Hyun CHAE
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Abstract
A composite anode material including an active material including a core of silicon, silicon oxide, or combination thereof encased within a buffer layer including a polymeric material, and a shell encapsulating the active material. The shell may include graphene, graphene oxide, partially reduced graphene oxide, or combinations thereof.
Claims31
A composite anode material, comprising:
- capsules comprising graphene, graphene oxide, at least partially reduced graphene oxide, or a combination thereof;
- and
- active material particles disposed within the capsules, each active material particle comprising:
- a core comprising silicon, silicon oxide, or combination thereof;
- and
- a buffer layer surrounding the core and comprising a polymeric material.
3 more elements
An electrode, comprising:
- capsules that comprise graphene, graphene oxide, at least partially reduced graphene oxide, or a combination thereof;
- at least one active material particle disposed within each of the capsules, each active material particle comprising:
- a core comprising silicon, silicon oxide or combination thereof;
- and
- a buffer layer surrounding the core and comprising a polymeric material;
- and
- a binder.
4 more elements
A method of forming composite anode material particles, the method comprising:
- combining core particles comprising silicon, silicon oxide, or a combination thereof, with a first liquid and a polymeric material, to form a first mixture;
- heating the first mixture at a first temperature to form active material particles comprising the core particles coated with the polymeric material;
- combining the active material particles with graphene, graphene oxide, partially reduced graphene oxide or a combination thereof and a second liquid, to form a second mixture;
- and
- heating the second mixture at a second temperature greater than the first temperature, to form composite anode material particles.
2 more elements
Dependencies are inferred from the claim text.