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Patent Agency Ranking
公开(公告)号：US11616226B2
公开(公告)日：2023-03-28
申请号：US17232241
申请日：2021-04-16
Applicant: KUNMING UNIVERSITY OF SCIENCE AND TECHNOLOGY
Inventor： Yingjie Zhang , Peng Dong , Qi Meng , Siyuan Zhou , Qingxiang Li , Shaoqiang Zhou , Jianguo Duan , Xue Li , Yin Liu , Duanyun Chen
Abstract: The disclosure discloses a method for preparing a high-voltage cathode material by body modification and regeneration of a waste lithium cobaltate material. The waste lithium cobaltate cathode material is calcined, and then measured; a lithium source, a magnesium source, nano-scale TiO2 and the waste lithium cobaltate cathode material powder are mixed to obtain a mixture, placed in a ball milling tank containing absolute ethanol, and the resulting mixture is ball milled, and then dried to obtain a mixed powder; the mixed powder is calcined to obtain a magnesium-titanium co-doped regenerated lithium cobaltate cathode material; the magnesium-titanium co-doped regenerated lithium cobaltate cathode material is added into a mixed solution obtained by ultrasonically mixing absolute ethanol with the aluminum source, and then heated and stirred continually until the solvent evaporates to obtain a residue; the residue is calcined to obtain an aluminum-coated magnesium-titanium co-doped regenerated lithium cobaltate cathode material.
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公开(公告)号：US20210391568A1
公开(公告)日：2021-12-16
申请号：US17232241
申请日：2021-04-16
Applicant: KUNMING UNIVERSITY OF SCIENCE AND TECHNOLOGY
Inventor： Yingjie Zhang , Peng Dong , Qi Meng , Siyuan Zhou , Qingxiang Li , Shaoqiang Zhou , Jianguo Duan , Xue Li , Yin Liu , Duanyun Chen
IPC: H01M4/36 , C01G51/00 , H01M10/54 , H01M10/052 , H01M4/525
Abstract: The disclosure discloses a method for preparing a high-voltage cathode material by body modification and regeneration of a waste lithium cobaltate material. The waste lithium cobaltate cathode material is calcined, and then measured; a lithium source, a magnesium source, nano-scale TiO2 and the waste lithium cobaltate cathode material powder are mixed to obtain a mixture, placed in a ball milling tank containing absolute ethanol, and the resulting mixture is ball milled, and then dried to obtain a mixed powder; the mixed powder is calcined to obtain a magnesium-titanium co-doped regenerated lithium cobaltate cathode material; the magnesium-titanium co-doped regenerated lithium cobaltate cathode material is added into a mixed solution obtained by ultrasonically mixing absolute ethanol with the aluminum source, and then heated and stirred continually until the solvent evaporates to obtain a residue; the residue is calcined to obtain an aluminum-coated magnesium-titanium co-doped regenerated lithium cobaltate cathode material.
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公开(公告)号：US20230082842A1
公开(公告)日：2023-03-16
申请号：US17664298
申请日：2022-05-20
Applicant: Kunming University of Science and Technology
Inventor： Yingjie Zhang , Peng Dong , Qi Meng , Yannan Zhang , Zitong Fei , Chenchen Li , Lei Liu , Jin Yan
IPC: H01M10/54 , H01M10/0525 , H01M4/525
Abstract: The present disclosure describes a method for repairing a cathode material of a spent lithium-ion battery, which includes: mixing the cathode material of the spent lithium-ion battery, a lithium sheet, a solid oxidant and absolute ethanol under a protective atmosphere for repairing to obtain a repaired cathode material of the lithium-ion battery, where a temperature for the repairing is 20-70° C.; a ratio of the amount of substance of lithium atoms to the total amount of substance of other metal atoms in the cathode material of the spent lithium-ion battery is (0.5-1):1, excluding 1:1.
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公开(公告)号：US11331657B2
公开(公告)日：2022-05-17
申请号：US16722936
申请日：2019-12-20
Applicant: Kunming University of Science and Technology
Inventor： Ping Ning , Xueqian Wang , Qi Wang , Langlang Wang , Qiang Ma , Yingjie Zhang
Abstract: The present invention discloses a method of preparing a catalyst for low-temperature synergistic catalytic purification of NOx and HCN in a flue gas, and the use thereof. Citric acid is dissolved in ethanol to obtain a citric acid/ethanol solution; tetrabutyl titanate is added, mixed uniformly to obtain a tetrabutyl titanate-citric acid/ethanol solution; glacial acetic acid is added dropwise to react for 30-40 min to obtain a solution A; the metal salt solution was added dropwise into the solution A, mixed uniformly and added with nitric acid, ammonium hydroxide is added dropwise to adjust the pH value, and the temperature is raised at a constant speed to obtain a gel B; dried and then then baked at a temperature of 300-500° C. for 3-4 h, cooled in the furnace, pulverized, tableted and sieved to obtain the catalyst for the low-temperature synergistic catalytic purification of NOx and HCN in the flue gas.
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公开(公告)号：US11261088B2
公开(公告)日：2022-03-01
申请号：US17033788
申请日：2020-09-26
Applicant: Kunming University of Science and Technology
Inventor： Ping Ning , Rui Cao , Xueqian Wang , Senlin Tian , Yixing Ma , Langlang Wang , Yingjie Zhang , Peng Chen
Abstract: A method for production of ammonium phosphate from phosphate rock slurry. The method includes: introducing flue gas containing SO2 into a phosphate rock slurry, to yield an absorption solution; evaporating waste ammonia water containing 10-20 wt. % ammonia to yield ammonia gas; introducing the ammonia gas into the absorption solution at a temperature of 110-135° C. until a neutralization degree of the absorption solution reaches 1.5-1.6, thus yielding an ammonium phosphate solution and calcium sulfate; separating the calcium sulfate from the ammonium phosphate solution; and introducing the ammonium phosphate solution to a granulator for granulation to yield ammonium phosphate granules; drying and sieving the ammonium phosphate granules, thereby yielding ammonium phosphate.
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