Patents by Inventor Kam Piu HO
Kam Piu HO has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11855272Abstract: A cathode slurry comprises a cathode active material, especially a nickel-containing cathode active material, a binder, a solvent and a base having a formula of R 1R 2R 3N, with improved stability in water. Pre-treatment of nickel-containing cathode active materials may improve stability of the cathode by preventing undesirable decomposition of the material. In addition, battery cells comprising the cathode prepared by the cathode slurry exhibit impressive electrochemical performances.Type: GrantFiled: April 8, 2020Date of Patent: December 26, 2023Assignee: GRST International LimitedInventors: Kam Piu Ho, Yingkai Jiang
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Patent number: 11855275Abstract: A method for preparing a cathode based on an aqueous slurry is provided. The cathode slurry with improved stability in water comprises a cathode active material, especially a nickel-containing cathode active material. Treatment of nickel-containing cathode active materials with lithium compounds may improve stability of the cathode by preventing undesirable decomposition of the material. In addition, battery cells comprising the cathode prepared by the method disclosed herein exhibit impressive electrochemical performances.Type: GrantFiled: May 22, 2020Date of Patent: December 26, 2023Assignee: GRST International LimitedInventors: Kam Piu Ho, Yingkai Jiang
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Publication number: 20230340379Abstract: The invention provides a method for delaminating a composite by immersing the composite into a delamination solution; wherein the composite comprises a metal substrate and a coating applied on one side or both sides of the metal substrate, wherein the coating comprises a polymeric binder; and wherein the polymeric binder comprises an aqueous copolymer. The use of delamination solution comprising a strong base allows for complete delamination of the composite in a highly efficient and extremely fast manner. Furthermore, the delamination method disclosed herein circumvents complex separation processes, contamination and corrosion of the metal substrate and enables an excellent materials recovery. An application of the method for delaminating an electrode for a battery is disclosed herein.Type: ApplicationFiled: March 15, 2021Publication date: October 26, 2023Inventors: Kam Piu Ho, Yingkai Jiang, Yangjian Dong
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Publication number: 20230343963Abstract: A conductive composition for a secondary battery, a slurry comprising the same, an electrode comprising the same and a method of preparing the conductive composition are provided. The conductive composition comprises a polymeric material, a carbon nanomaterial and an anionic stabilizing agent. The polymeric material comprises a copolymer comprising a structural unit derived from an acid group-containing monomer and a structural unit derived from a polar group-containing monomer. The conductive composition exhibits an improved stability and dispersibility in water. In addition, battery cells comprising a cathode prepared using the conductive composition disclosed herein exhibit impressive electrochemical performances.Type: ApplicationFiled: June 2, 2021Publication date: October 26, 2023Inventors: Kam Piu Ho, Yingkai Jiang, Xinying Sun
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Publication number: 20230299372Abstract: Provided is a method for recycling a battery electrode by immersing the electrode into a delamination solution and subsequently precipitating a polymeric binder with the addition of a precipitation agent; wherein the electrode comprises a current collector and an electrode layer material coated on one side or both sides of the current collector; wherein the electrode layer material comprises a polymeric binder; and wherein the polymeric binder comprises a copolymer comprising a structural unit derived from an acid group-containing monomer and a structural unit derived from a hydrogen bond-forming group-containing monomer (ii). The method disclosed herein circumvents complex separation process, corrosion of current collector and contamination of polymeric binder, enables excellent materials recovery and allows the recycling of battery electrode to be achieved in a highly efficient manner.Type: ApplicationFiled: June 16, 2021Publication date: September 21, 2023Inventors: Kam Piu Ho, Yingkai Jiang, Yangjian Dong
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Publication number: 20230223517Abstract: A coated cathode active material particle comprises a cathode active material particle and a coating layer derived from one or more phosphorus-containing compounds that surrounds the cathode active material particle. By coating of the cathode active material with the phosphorus-containing compound, degradation of the cathode active material due to reaction with water can be suppressed. As a result, the coated cathode active material can be successfully used in a water-based electrode slurry. A water-based electrode slurry comprising the coated cathode active material is also disclosed, and batteries comprising electrodes made using the water-based electrode slurry were found to have improved electrochemical performance.Type: ApplicationFiled: June 8, 2021Publication date: July 13, 2023Inventors: Kam Piu Ho, Yingkai Jiang, Fengjuan Du, Priscilla Huen
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Publication number: 20230216055Abstract: Provides an aqueous binder composition for a secondary battery electrode, comprising a copolymer and a dispersion medium, wherein the copolymer comprises a structural unit (a), a structural unit (b), and a structural unit (c). The binder composition disclosed herein has improved binding capability. In addition, battery cells comprising electrodes prepared using the binder composition disclosed herein exhibits exceptional electrochemical performance.Type: ApplicationFiled: June 15, 2021Publication date: July 6, 2023Inventors: Kam Piu Ho, Yingkai Jiang, Tao Gong
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Publication number: 20230207813Abstract: Provided is a slurry composition that can be used in manufacturing an electrode of a lithium-ion battery. The slurry composition comprises a binder, a solvent, an electrode active material, and an additive. The additive can be a compound described by the general formula (1). The binder is a copolymer comprising of one or more hydrophilic structural units and one or more hydrophobic structural units. The addition of the additive improves electrode flexibility significantly. A method to produce electrodes using this slurry is also disclosed. In addition, battery cells containing the electrode prepared using the slurry composition disclosed herein exhibit exceptional electrochemical performance.Type: ApplicationFiled: June 3, 2021Publication date: June 29, 2023Inventors: Kam Piu Ho, Yingkai Jiang
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Publication number: 20230198039Abstract: Provided is a method for delaminating a composite by immersing the composite into a delamination solution; wherein the composite comprises a metal substrate and a coating applied on one side or both sides of the metal substrate, wherein the coating comprises a polymeric binder; and wherein the polymeric binder comprises an aqueous copolymer. The use of delamination solution comprising a strong base allows for complete delamination of the composite in a highly efficient and extremely fast manner. Furthermore, the delamination method disclosed herein circumvents complex separation processes, contamination and corrosion of the metal substrate and enables an excellent materials recovery. An application of the method for delaminating an electrode for a battery is disclosed herein.Type: ApplicationFiled: June 1, 2021Publication date: June 22, 2023Inventors: Kam Piu Ho, Yingkai Jiang, Yangjian Dong
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Publication number: 20230182462Abstract: The invention provides a method for delaminating a composite by immersing the composite into a delamination solution; wherein the composite comprises a metal substrate and a coating applied on one side or both sides of the metal substrate, wherein the coating comprises a polymeric binder; and wherein the polymeric binder comprises an aqueous copolymer. The use of delamination solution comprising an alkali metal silicate salt allows for complete delamination of the composite in a highly efficient and extremely fast manner. Furthermore, the delamination method disclosed herein circumvents complex separation processes, contamination and corrosion of the metal substrate and enables an excellent materials recovery. An application of the method for delaminating an electrode for a battery is disclosed herein.Type: ApplicationFiled: March 15, 2021Publication date: June 15, 2023Applicant: GRST International LimitedInventors: Kam Piu Ho, Yingkai Jiang, Yangjian Dong
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Publication number: 20230187639Abstract: A coated cathode active material, wherein a coated cathode active material particle comprises a cathode active material particle and a coating layer derived from one or more phosphorus-containing compounds that surrounds the cathode active material particle. By coating of the cathode active material with the phosphorus-containing compound, degradation of the cathode active material due to reaction with water can be suppressed. As a result, the coated cathode active material can be successfully used in a water-based electrode slurry. A water-based electrode slurry comprising the coated cathode active material is also disclosed, and batteries comprising electrodes made using the water-based electrode slurry were found to have improved electrochemical performance.Type: ApplicationFiled: June 8, 2021Publication date: June 15, 2023Inventors: Kam Piu Ho, Yingkai Jiang, Fengjuan Du, Priscilla Huen
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Publication number: 20230178820Abstract: The invention provides a method for delaminating a composite by immersing the composite into a delamination solution; wherein the composite comprises a metal substrate and a coating applied on one side or both sides of the metal substrate, wherein the coating comprises a polymeric binder; and wherein the polymeric binder comprises an aqueous copolymer. The use of delamination solution comprising an alkali metal phosphate salt allows for complete delamination of the composite in a highly efficient and extremely fast manner. Furthermore, the delamination method disclosed herein circumvents complex separation processes, contamination and corrosion of the metal substrate and enables an excellent materials recovery. An application of the method for delaminating an electrode for a battery is disclosed herein.Type: ApplicationFiled: March 15, 2021Publication date: June 8, 2023Inventors: Kam Piu Ho, Yingkai Jiang, Yangjian Dong
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Publication number: 20230175095Abstract: The invention provides a method for delaminating a composite by immersing the composite into a delamination solution; wherein the composite comprises a metal substrate and a coating applied on one side or both sides of the metal substrate, wherein the coating comprises a polymeric binder; and wherein the polymeric binder comprises an aqueous copolymer. The use of delamination solution comprising an alkali metal silicate salt allows for complete delamination of the composite in a highly efficient and extremely fast manner. Furthermore, the delamination method disclosed herein circumvents complex separation processes, contamination and corrosion of the metal substrate and enables an excellent materials recovery. An application of the method for delaminating an electrode for a battery is disclosed herein.Type: ApplicationFiled: March 15, 2021Publication date: June 8, 2023Inventors: Kam Piu Ho, Yingkai Jiang, Yangjian Dong
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Publication number: 20230178740Abstract: A binder composition that can be used in a dry electrode mixture or electrode slurry for producing an electrode is disclosed. The binder composition comprises a water-compatible copolymer, and has a liquid content of less than 85%by weight, based on the total weight of the binder composition. The reduced liquid content of the binder composition improves transport and storage efficiency compared to a conventional wet binder composition. The binder composition disclosed herein is versatile, and can be used successfully in a dry electrode mixture and an electrode slurry. Batteries comprising electrodes prepared with the binder composition disclosed herein have electrochemical performances comparable to batteries comprising electrodes produced via a conventional wet binder composition.Type: ApplicationFiled: June 10, 2021Publication date: June 8, 2023Inventors: Kam Piu Ho, Yingkai Jiang, Hongke Qiu, Tao Gong, Priscilla Huen
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Publication number: 20230141592Abstract: Provided is an aqueous binder composition for a secondary battery electrode, comprising a copolymer and a dispersion medium, wherein the copolymer comprises a structural unit (a) derived from a carboxylic acid group-containing monomer, a structural unit (b) derived from an amide group-containing monomer, a structural unit (c) derived from a nitrile group-containing monomer, and at least one anionic reactive emulsifier, with an improved binding capability. In addition, battery cells comprising the cathode prepared using the binder composition disclosed herein exhibits exceptional electrochemical performance.Type: ApplicationFiled: September 25, 2020Publication date: May 11, 2023Inventors: Yingkai Jiang, Kam Piu Ho, Hongke Qiu
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Publication number: 20230142072Abstract: Provided is a slurry composition that can be used in manufacturing an electrode of a lithium-ion battery. The slurry composition comprises a binder, a solvent, an electrode active material, and an additive. The additive can be a compound described by the general formula (1). The binder is a copolymer comprising of one or more hydrophilic structural units and one or more hydrophobic structural units. The addition of the additive improves electrode flexibility significantly. A method to produce electrodes using this slurry is also disclosed. In addition, battery cells containing the electrode prepared using the slurry composition disclosed herein exhibit exceptional electrochemical performance.Type: ApplicationFiled: June 3, 2021Publication date: May 11, 2023Inventors: Kam Piu Ho, Yingkai Jiang
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Publication number: 20230138359Abstract: Provided is a method for delaminating a composite by immersing the composite into a delamination solution; wherein the composite comprises a substrate and a coating applied on one side or both sides of the substrate comprising a polymeric binder; and wherein the polymeric binder comprises a copolymer comprising a structural unit derived from an acid group-containing monomer. The use of weak acid-containing delamination solution allows for complete delamination of the composite in a highly efficient manner. Furthermore, the delamination method disclosed herein circumvents complex separation process, contamination and corrosion of substrate and enables an excellent materials recovery. An application of the method for delaminating an electrode for a battery is also disclosed.Type: ApplicationFiled: December 25, 2020Publication date: May 4, 2023Inventors: Kam Piu Ho, Yingkai Jiang, Yangjian Dong
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Publication number: 20230136670Abstract: The invention provides a method for delaminating a composite by immersing the composite into a delamination solution; wherein the composite comprises a metal substrate and a coating applied on one side or both sides of the metal substrate, wherein the coating comprises a polymeric binder; and wherein the polymeric binder comprises an aqueous copolymer. The use of delamination solution comprising a weak base allows for complete delamination of the composite in a highly efficient and extremely fast manner. Furthermore, the delamination method disclosed herein circumvents complex separation processes, contamination and corrosion of the metal substrate and enables an excellent materials recovery. An application of the method for delaminating an electrode for a battery is disclosed herein.Type: ApplicationFiled: March 15, 2021Publication date: May 4, 2023Inventors: Kam Piu Ho, Yingkai Jiang, Yangjian Dong
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Publication number: 20230121093Abstract: An aqueous binder composition for a secondary battery electrode is provided, comprising a copolymer and a dispersion medium, wherein the copolymer comprises a structural unit (a) derived from a carboxylic acid group-containing monomer, a structural unit (b) derived from an amide group-containing monomer and a structural unit (c) derived from a nitrile group-containing monomer, with an improved binding capability. In addition, battery cells comprising the cathode prepared using the binder composition disclosed herein exhibits exceptional electrochemical performance.Type: ApplicationFiled: September 25, 2020Publication date: April 20, 2023Applicant: GRST International LimitedInventors: Kam Piu HO, Yingkai Jiang, Tao Gong
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Publication number: 20230114903Abstract: An aqueous binder composition for a secondary battery electrode is provided, comprising a copolymer and a dispersion medium, wherein the copolymer comprises a structural unit (a) derived from a carboxylic acid group-containing monomer, a structural unit (b) derived from an amide group-containing monomer, a structural unit (c) derived from a nitrile group-containing monomer, a structural unit (d) derived from a hydroxyl group-containing monomer, and at least one anionic reactive emulsifier, with an improved binding capability. In addition, battery cells comprising the cathode prepared using the binder composition disclosed herein exhibit exceptional electrochemical performance.Type: ApplicationFiled: September 25, 2020Publication date: April 13, 2023Inventors: Kam Piu Ho, Yingkai Jiang, Hongke Qiu