20240030456. PROTECTIVE CARBON COATINGS FOR ELECTRODE ASSEMBLY simplified abstract (GM GLOBAL TECHNOLOGY OPERATIONS LLC)

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PROTECTIVE CARBON COATINGS FOR ELECTRODE ASSEMBLY

Organization Name

GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor(s)

Mengyuan Chen of Madison Heights MI (US)

Xiaosong Huang of Novi MI (US)

Bradley R. Frieberg of Farmington Hills MI (US)

Roland J. Koestner of Webster NY (US)

PROTECTIVE CARBON COATINGS FOR ELECTRODE ASSEMBLY - A simplified explanation of the abstract

This abstract first appeared for US patent application 20240030456 titled 'PROTECTIVE CARBON COATINGS FOR ELECTRODE ASSEMBLY

Simplified Explanation

The present disclosure is about an electrode assembly used in an electrochemical cell that cycles lithium ions. The assembly includes a current collector, an electroactive material layer, and a protective coating. The electroactive material layer consists of electroactive material particles, some of which have a protective particle coating made of carbon. The protective coating is a carbon layer that includes a second carbonaceous material.

  • The electrode assembly is designed for use in an electrochemical cell that cycles lithium ions.
  • It includes a current collector, an electroactive material layer, and a protective coating.
  • The electroactive material layer is made up of electroactive material particles.
  • Some of the electroactive material particles have a protective particle coating made of carbon.
  • The protective coating is a carbon layer that includes a second carbonaceous material.
  • The first and second carbonaceous materials can be selected from a group including graphite, graphene, carbon black, soft carbon, hard carbon, carbon fibers, carbon nanotubes, mesoporous carbon materials, biomass-derived carbon materials, and combinations thereof.

Potential applications of this technology:

  • Lithium-ion batteries: The electrode assembly can be used in lithium-ion batteries to improve their performance and cycle life.
  • Energy storage systems: The electrode assembly can be utilized in energy storage systems to enhance their efficiency and durability.
  • Electric vehicles: The technology can be applied in electric vehicle batteries to increase their energy density and lifespan.

Problems solved by this technology:

  • Improved cycling performance: The protective coating on the electroactive material particles helps prevent degradation and improves the cycling stability of the electrode assembly.
  • Enhanced durability: The protective coating acts as a barrier, protecting the electroactive material layer from degradation and extending the lifespan of the electrode assembly.
  • Increased energy density: The use of carbonaceous materials in the protective coating can enhance the energy density of the electrode assembly, leading to higher energy storage capacity.

Benefits of this technology:

  • Longer battery lifespan: The protective coating helps protect the electroactive material layer, resulting in a longer lifespan for the electrode assembly and the overall battery system.
  • Improved battery performance: The electrode assembly with the protective coating exhibits improved cycling stability and enhanced energy density, leading to better overall battery performance.
  • Enhanced safety: The use of a protective coating can help prevent the formation of dendrites, which can cause short circuits and safety hazards in lithium-ion batteries.


Original Abstract Submitted

the present disclosure provides an electrode assembly for use in an electrochemical cell that cycles lithium ions. the electrode assembly includes a current collector, an electroactive material layer disposed parallel with the current collector, and a protective coating disposed between the current collector and the electroactive material layer. the electroactive material layer is defined by a plurality of electroactive material particles. at least a portion of the electroactive material particles of the plurality of electroactive material particles includes a protective particle coating. the protective particle coating is a carbon coating that includes a first carbonaceous material. the protective coating is a carbon layer that includes a second carbonaceous material. the first and second carbonaceous materials are independently selected from the group consisting of: graphite, graphene, carbon black, soft carbon, hard carbon, carbon fibers, carbon nanotubes, mesoporous carbon materials, biomass derived carbon materials, and combinations thereof.

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