Global Graphene Group, Inc.

Honeycomb Battery Company

Wen Y Chiu

Bor Z Jang

Aruna Zhamu

Yi-jun Lin

Sheng-Yi Lu

Shaio-yen Lee

Fan-Chun Meng

An anode for a lithium battery, comprising multiple porous graphene particulates, wherein at least one of the particulates comprises multiple pores (total volume Vpp), pore walls, and primary particles of an anode active material (total volume Va), disposed in the pores, wherein (a) the pore walls contain a graphene material; (b) the primary particles are in an amount from 0.5% to 95% by weight based on the total particulate weight; (c) the particulate is embraced or encapsulated by a thin encapsulating layer of electrically conducting material having a thickness from 1 nm to 10 μm, an electric conductivity from 10S/cm to 20,000 S/cm and a lithium ion conductivity from 10S/cm to 5×10S/cm; and (d) the volume ratio Vpp/Va is from 1.3/1.0 to 5.0/1.0.

Porous graphene particulate-protected anode active materials for lithium batteries

Provided is a graphene-based coating suspension comprising multiple graphene sheets, thin film coating of an anti-corrosive pigment or sacrificial metal deposited on graphene sheets, and a binder resin dissolved or dispersed in a liquid medium, wherein the multiple graphene sheets contain single-layer or few-layer graphene sheets selected from a pristine graphene material having essentially zero % of non-carbon elements, or a non-pristine graphene material having 0.001% to 47% by weight of non-carbon elements wherein the non-pristine graphene is selected from graphene oxide, reduced graphene oxide, graphene fluoride, graphene chloride, graphene bromide, graphene iodide, hydrogenated graphene, nitrogenated graphene, doped graphene, chemically functionalized graphene, or a combination thereof. The invention also provides a process for producing this coating suspension. Also provided is an object or structure coated at least in part with such a coating.

Anti-corrosion material-coated discrete graphene sheets and anti-corrosion coating composition containing same

Provided is a graphene-based aqueous coating suspension comprising multiple graphene sheets, particles of an anti-corrosive pigment or sacrificial metal, and a waterborne binder resin dissolved or dispersed in water, wherein the multiple graphene sheets contain single-layer or few-layer graphene sheets selected from a pristine graphene material having essentially zero % of non-carbon elements, or a non-pristine graphene material having 0.001% to 47% by weight of non-carbon elements wherein the non-pristine graphene is selected from graphene oxide, reduced graphene oxide, graphene fluoride, graphene chloride, graphene bromide, graphene iodide, hydrogenated graphene, nitrogenated graphene, doped graphene, chemically functionalized graphene, or a combination thereof and wherein the coating suspension does not contain a silicate binder or microspheres dispersed therein. Also provided is an object or structure coated at least in part with such a coating.

Graphene-enabled anti-corrosion coating

An process for producing multiple porous graphene particulates for a lithium battery anode, the process comprising: (a) preparing a graphene dispersion having multiple anode material particles, multiple sheets of a starting graphene material, and a blowing agent dispersed in a liquid medium, wherein the blowing agent-to-graphene material weight ratio is from 0.01/1.0 to 1.0/1.0; (b) dispensing, forming and drying the graphene dispersion into multiple droplets containing therein graphene sheets, particles of the anode active material, and the blowing agent; and (c) heat treating the droplets at a heat treatment temperature selected from 80&#xb0; C. to 3,200&#xb0; C. at a desired heating rate sufficient to induce volatile gas molecules from the non-carbon elements or to activate the blowing agent for producing the multiple porous graphene particulates.

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Taipei, Taiwan

Wen Y Chiu