Global Graphene Group, Inc.

Nanotek Instruments, Inc.

Honeycomb Battery Company

Nanotek Instruments Group, LLC

Samsung Electronics Co., Ltd.

East Coast Dyes, Inc.

Auburn University

Angstron Materials (asia) Limited

Nantek Instuments, Inc.

Angstron Materials

Manotek Instriments, Inc.

Nonotek Instruments, Inc.

Bor Z Jang

Aruna Zhamu

Hui He

Yi-jun Lin

Yanbo Wang

Baofei Pan

Yu-Sheng Su

Guorong Chen

Jiusheng Guo

Jinjun Shi

Qing Fang

Wei Xiong

Mingchao Wang

Zhenning Yu

Hao-Hsun Chang

Jun Yin

Xiqing Wang

Lulu Song

Sheng-Yi Lu

Junhai Liu

Yen-Po Lin

Chueh Liu

Chen-guang Liu

David Neff

Shaio-yen Lee

Junsheng Yang

Song-Hai Chai

Lucy Fu

ChenGuang Liu

Wen Y Chiu

Wen C Huang

Fan-Chun Meng

Jen-Hsien Yang

Hsuan-Wen Lee

Zenning Yu

Songhai Chai

Yu-Ming Chen

Hamilton Sean Michael Whitney

Gregory Lee Kenneally

Wen-Chiang Huang

Justin Jang

Erjian Ma

Lu Zhang

Ming C Wang

Evan House

Xiging Wang

Chenguang Liu

Minjie Li

Yao-de Jhong

Chia-Jen Hsu

Shaio-Yen Lee

David Joseph Burton

Feng-Yu Tsai

Liangwei Wu

Hung-Wei Liu

Che-Chen Hsu

Ian M Fuller

Zhimin M Li

Lijun Pan

Guo-Cyuan Fang

Dung-Yue Su

Jun Hai Liu

Yu-Chan Yen

Shizhu Chen

C Jeff Wang

Chin-Chuan Chang

Mingrui Liu

Lin Yi-jun

Yaw Yuh Ko

Joan Jang

Jun H Liu

Shizu Chen

Hassan Mahfuz

Ashfaq Adnan

A rechargeable sodium-ion cell, comprising an anode, a cathode, a separator that electronically isolates the anode from the cathode, and an electrolyte in ionic contact with the anode active and the cathode, wherein the anode comprises a graphite or carbon material having expanded inter-graphene planar spaces with an inter-planar spacing dfrom 0.43 nm to 3.0 nm, as measured by X-ray diffraction, and the expanded inter-graphene planar spaces store sodium ions to a specific capacity no less than 150 mAh/g when the cell is in a charged state. Also provided is a method of producing such an anode and sodium-ion cell.

Sodium-ion battery containing a high-capacity graphitic anode and manufacturing method

Provided is filtration member for use in a filtration device, said filtration member comprising a layer of woven or nonwoven fabric having two primary surfaces and a layer of chemically functionalized graphite flakes deposited on at least one of the two primary surfaces or embedded in the layer of woven or nonwoven fabric, wherein said graphite flakes comprise chemical function contain 1%-50% by weight of a non-carbon element selected from O, N, H, F, Cl, Br, I, or a combination thereof. Also provided is a face mask comprising: (a) a mask body configured to cover at least wearer's mouth and nose; and (b) a fastener to hold the mask in place on the wearer's face; wherein the mask body includes (i) an air-permeable outer layer, (ii) an inner layer located on a wearer's side when the mask is worn, and (iii) the filtration member comprising graphite flakes.

Graphitic antiviral filtration element and filtration devices containing same

Provided is conducting network polymer-encapsulated phosphorus-based anode particulate or multiple particulates for a lithium or sodium ion battery, the particulate comprising: (A) a core comprising one or a plurality of phosphorus material particles or coating (e.g. on surfaces of graphitic material particles) having a diameter or thickness from 0.5 nm to 10 μm and is selected from red phosphorus, black phosphorus (including phosphorene), violet phosphorus, a metal phosphide, MPy, or a combination thereof, wherein M=Mn, V, Sn, Ni, Cu, Fe, Co, Zn, Ge, Se, Mo, Ga, In, or an alloy thereof, and y=1-4; and (B) an encapsulating shell that embraces or encapsulates the core, wherein the encapsulating shell comprises an electron- and/or ion-conducting network (cross-linked) polymer.

Conducting polymer network-protected phosphorus anode active material for lithium-ion or sodium-ion batteries

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

A rechargeable lithium battery comprising an anode, a cathode, and a quasi-solid or solid-state electrolyte in ionic communication with the anode and the cathode, wherein the electrolyte comprises a polyphosphazene polymer and a lithium salt dissolved or dispersed in the polymer, wherein the lithium salt occupies a weight fraction from 0.1% to 50% based on the total weight of the lithium salt and the polyphosphazene polymer combined; wherein the polyphosphazene polymer permeates into the anode and/or the cathode and in physical contact with the anode active material inside the anode and/or in physical contact with or chemically bonded to the cathode active material inside the cathode; and wherein the electrolyte further comprises from 0% to 50% by weight of a non-aqueous liquid solvent dispersed in the polymer, based on the total weight of the lithium salt, the polymer, and the non-aqueous liquid solvent combined.

Phosphazene compound-based electrolyte compositions, quasi-solid and solid-state electrolytes, and lithium batteries

The invention provides a method of improving the cycle-life of a lithium metal secondary battery. The method comprises implementing an anode-protecting layer between an anode active material layer and a porous separator/electrolyte, wherein the anode-protecting layer or cathode-protecting layer comprises a conductive sulfonated elastomer composite having from 0.01% to 50% by weight of a conductive reinforcement material dispersed in a sulfonated elastomeric matrix material and the protecting layer has a thickness from 1 nm to 100 μm, a fully recoverable tensile strain from 2% to 500%, a lithium ion conductivity from 10S/cm to 5×10S/cm, and an electrical conductivity from 10S/cm to 100 S/cm when measured at room temperature.

Method of improving cycle-life of a lithium metal secondary battery

A composite particulate for a lithium battery, wherein the composite particulate has a diameter from 10 nm to 50 μm and comprises one or more than one anode active material particles that are dispersed in a high-elasticity polymer matrix or encapsulated by a high-elasticity polymer shell, wherein said high-elasticity polymer matrix or shell has a recoverable elastic tensile strain no less than 5%, when measured without an additive or reinforcement dispersed therein, and a lithium ion conductivity no less than 10S/cm at room temperature and wherein the high-elasticity polymer comprises a crosslinked polymer network of chains derived from a phosphazene compound.

Phosphazene compound-based elastic polymer-encapsulated anode particles for lithium batteries and method of manufacturing

A rechargeable lithium battery comprising an anode, a cathode, and a hybrid electrolyte in ionic communication with the anode and the cathode, wherein: (a) the hybrid electrolyte comprises a mixture of a polymer and particles of an inorganic solid electrolyte; (b) the polymer is a polymerization or crosslinking product of a reactive additive, wherein the reactive additive comprises (i) a first liquid solvent that is polymerizable, (ii) an initiator or curing agent, and (iii) a lithium salt; (c) the polymer is present in the anode, the cathode, the separator, between the anode and the separator, or between the cathode and the separator; and (d) the hybrid electrolyte forms a contiguous phase in the cathode or in the anode, and occupies from 3% to 40% by volume of the cathode or from 3% to 40% by volume of the anode. Also provided is a process for producing the lithium cell.

Flame-resistant hybrid inorganic-polymeric solid-state electrolytes and lithium batteries containing same

Provided is a process for manufacturing a graphene material, the process comprising (a) injecting a rust stock into a first end of a continuous reactor having a toroidal vortex flow, wherein the first stock comprises graphite and a non-oxidizing liquid (or, alternatively, graphite, an acid, and an optional oxidizer) and the continuous flow reactor is configured to produce the toroidal vortex flow, enabling the formation of a reaction product suspension or slurry at the second end, downstream from the first end, of the continuous reactor; and (b) introducing the reaction product suspension/slurry from the second end back to enter the continuous reactor at or near the first end, allowing the reaction product suspension/slurry to form a toroidal vortex flow and move down to or near the second end to produce a graphene suspension or graphene oxide slurry. The process may further comprise repeating step (b) for at least one time.

Continuous production of pristine graphene and graphene oxide

Provided is a process for producing an integral graphene film, comprising: (a) preparing a graphene dispersion having chemically functionalized graphene sheets dispersed in a fluid medium wherein the graphene sheets contain chemical functional groups attached thereto; (b) dispensing and depositing a wet film of the graphene dispersion onto a supporting substrate, wherein the dispensing and depositing procedure includes mechanical shear stress-induced alignment of the graphene sheets along a film planar direction, and partially or completely removing the fluid medium to form a relatively dried film comprising aligned chemically functionally graphene sheets; and (c) using heat, electromagnetic waves, UV light, or high-energy radiation to induce chemical reactions or chemical bonding between chemical functional groups attached to adjacent chemically functionalized graphene sheets to form the integral graphene film. The film after step (b) or (c) may be further compressed to increase the degree of graphene sheet orientation in the integral graphene film.

Process for producing integral graphene films from functionalized graphene sheets

Provided is a method of improving a cycle-life of a rechargeable alkali metal-sulfur cell, the method comprising implementing an electronically non-conducting anode-protecting layer between an anode active material layer and a cathode active material without using a porous separator in the cell, wherein the anode-protecting layer has a thickness from 1 nm to 100 μm and comprises an elastomer having a fully recoverable tensile elastic strain from 2% to 1,000%, a lithium ion or sodium ion conductivity from 10S/cm to 5×10S/cm, and an electronic conductivity less than 10S/cm when measured at room temperature. This battery exhibits an excellent combination of high sulfur content, high sulfur utilization efficiency, high energy density, no known dendrite issue, no dead lithium or dead sodium issue, and a long cycle life.

Method of improving the charge/discharge cycle life and safety of an alkali metal-sulfur secondary battery

Provided is method of producing a porous anode material structure for a lithium-ion battery, the method comprising (A) providing an integral 3D graphene-carbon hybrid foam comprising multiple pores, having a pore volume Vp, and pore walls; and (B) impregnating or infiltrating the pores with a fluid for forming a coating of an anode active material, having a coating volume Vc, deposited on or bonded to surfaces of the pore walls; wherein the pore walls contain single-layer or few-layer graphene sheets chemically bonded by a carbon material having a carbon material-to-graphene weight ratio from 1/200 to 1/2, and wherein the volume ratio Vp/Vc is from 0.1/1.0 to 10/1.0.

Method of producing graphene-carbon hybrid foam-protected anode active material coating for lithium-ion batteries

Provided is a method of producing multi-functional particulates of graphene-protected conducting polymer gel network-encapsulated anode particles for a lithium battery, said method comprising: a) Dispersing a plurality of primary particles of an anode active material, having a diameter or thickness from 0.5 nm to 20 μm, and multiple graphene sheets into a precursor to a conducting polymer gel network to form a suspension; and b) Forming said suspension into micro-droplets and, concurrently or sequentially, polymerizing and/or crosslinking said precursor to form said multi-functional particulates. The conducting polymer gel network comprises a polyaniline hydrogel, polypyrrole hydrogel, or polythiophene hydrogel in a dehydrated state.

Method of producing conducting polymer network-enabled particulates of anode active material particles for lithium-ion batteries

An optically transparent and electrically conductive film composed of metal nanowires or carbon nanotubes combined with pristine graphene with a metal nanowire-to-graphene or carbon nanotube-to-graphene weight ratio from 1/99 to 99/1, wherein the pristine graphene is single-crystalline and contains no oxygen and no hydrogen, and the film exhibits an optical transparence no less than 80% and sheet resistance no higher than 300 ohm/square. This film can be used as a transparent conductive electrode in an electro-optic device, such as a photovoltaic or solar cell, light-emitting diode, photo-detector, touch screen, electro-wetting display, liquid crystal display, plasma display, LED display, a TV screen, a computer screen, or a mobile phone screen.

Highly conducting and transparent film and process for producing same

The invention provides a method of improving the cycle-life of a lithium metal secondary battery. The method comprises implementing an anode-protecting layer between an anode active material layer and a porous separator/electrolyte, wherein the anode-protecting layer or cathode-protecting layer comprises a conductive sulfonated elastomer composite having from 0.01% to 40% by weight of a conductive reinforcement material and from 0.01% to 40% by weight of an electrochemically stable inorganic filler dispersed in a sulfonated elastomeric matrix material and the protecting layer has a thickness from 1 nm to 100 μm, a fully recoverable tensile strain from 2% to 500%, a lithium ion conductivity from 10S/cm to 5×10S/cm, and an electrical conductivity from 10S/cm to 100 S/cm when measured at room temperature.

Method of extending cycle-life of a lithium metal secondary battery

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Centerville, OH, United States of America

Bor Z Jang