-
公开(公告)号：US20230175095A1
公开(公告)日：2023-06-08
申请号：US17922380
申请日：2021-03-15
发明人： Kam Piu Ho , Yingkai Jiang , Yangjian Dong
CPC分类号： C22B7/008 , C22B21/0023 , H01M10/54
摘要： 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.
-
公开(公告)号：US12057585B2
公开(公告)日：2024-08-06
申请号：US17798885
申请日：2021-06-02
发明人： Kam Piu Ho , Yingkai Jiang , Xinying Sun
IPC分类号： H01M4/62
摘要： 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.
-
公开(公告)号：US11855275B2
公开(公告)日：2023-12-26
申请号：US17794273
申请日：2020-05-22
发明人： Kam Piu Ho , Yingkai Jiang
CPC分类号： H01M4/1391 , H01M4/0404 , H01M4/131 , H01M4/366 , H01M4/505 , H01M4/525 , H01M4/625 , H01M4/628 , H01M2004/028
摘要： 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.
-
公开(公告)号：US20230223517A1
公开(公告)日：2023-07-13
申请号：US17926995
申请日：2021-06-08
发明人： Kam Piu Ho , Yingkai Jiang , Fengjuan Du , Priscilla Huen
IPC分类号： H01M4/36 , H01M4/62 , H01M10/0525
CPC分类号： H01M4/366 , H01M4/621 , H01M4/622 , H01M4/625 , H01M10/0525 , H01M2004/028
摘要： 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.
-
公开(公告)号：US20230187639A1
公开(公告)日：2023-06-15
申请号：US17925836
申请日：2021-06-08
发明人： Kam Piu Ho , Yingkai Jiang , Fengjuan Du , Priscilla Huen
IPC分类号： H01M4/62 , H01M4/36 , H01M10/0525
CPC分类号： H01M4/622 , H01M4/366 , H01M4/625 , H01M10/0525 , H01M2004/028
摘要： 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.
-
公开(公告)号：US20230142072A1
公开(公告)日：2023-05-11
申请号：US17912851
申请日：2021-06-03
发明人： Kam Piu Ho , Yingkai Jiang
摘要： 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.
-
公开(公告)号：US20230207813A1
公开(公告)日：2023-06-29
申请号：US17925607
申请日：2021-06-03
发明人： Kam Piu Ho , Yingkai Jiang
摘要： 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.
-
公开(公告)号：US20230182462A1
公开(公告)日：2023-06-15
申请号：US17923239
申请日：2021-03-15
发明人： Kam Piu Ho , Yingkai Jiang , Yangjian Dong
CPC分类号： B32B43/006 , H01M10/54
摘要： 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.
-
公开(公告)号：US20230178820A1
公开(公告)日：2023-06-08
申请号：US17923925
申请日：2021-03-15
发明人： Kam Piu Ho , Yingkai Jiang , Yangjian Dong
摘要： 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.
-
公开(公告)号：US20230073006A1
公开(公告)日：2023-03-09
申请号：US17797116
申请日：2021-03-12
发明人： Kam Piu Ho , Yingkai Jiang , Priscilla Huen
摘要： The invention provides an aqueous solvent-based cathode slurry for a secondary battery, comprising a cathode active material, a water-compatible copolymeric binder, a lithium compound, and an aqueous solvent. The lithium compound in the cathode slurry serves as a lithium-ion source in compensating for the irreversible capacity loss due to SEI formation during initial charging of the battery. Consequently, battery cells prepared using the cathode slurry disclosed herein exhibit improved electrochemical performance. Also provided herein is a cathode for a secondary battery, comprising a current collector and an electrode layer coated on one side or both sides of the current collector, wherein the electrode layer comprises a cathode active material, a water-compatible copolymeric binder, and a lithium compound; and which the cathode can be produced using the aqueous solvent-based cathode slurry disclosed.
-
-
-
-
-
-
-
-
-
搜索结果
34 条记录 (耗时 0.02 秒)
