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公开(公告)号：US20210408539A1
公开(公告)日：2021-12-30
申请号：US17363693
申请日：2021-06-30
Applicant: Northeastern University , Worcester Polytechnic Institute
Inventor： Hongli Zhu , Yubin Zhang , Yan Wang , Daxian Cao
IPC: H01M4/525 , H01M4/505 , H01M10/0562 , H01M4/04
Abstract: A solid-state battery is described. The solid-state battery includes an anode, a coated cathode, and an electrolyte. The cathode coating is formed of lithium (Li), lanthanum (La), strontium (Sr), titanium (Ti), and oxygen (O). The cathode coating has a high ionic conductivity.
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公开(公告)号：US12297518B2
公开(公告)日：2025-05-13
申请号：US17719080
申请日：2022-04-12
Applicant: Worcester Polytechnic Institute
Inventor： Yan Wang , Jiahui Hou , Xiaotu Ma , Jinzhao Fu
Abstract: Lithium recycling from expended Li-Ion batteries occurs thought selective recovery of lithium charge materials from a recycling stream including transition metals used for the charge material. Li recovery includes dissolving the lithium based charge material in an organic acid having a resistance or lack of affinity to dissolution of transition metals, and distilling a leach solution formed from the dissolved charge material for generating a powder including lithium and trace impurities of the transition metals. Sintering of the generated powder forms lithium carbonate and carbonates of the trace impurities that eluded the selective leach, however, since the trace impurities are insoluble in water, the lithium carbonate is recoverable by water washing.
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公开(公告)号：US12046725B2
公开(公告)日：2024-07-23
申请号：US18113130
申请日：2023-02-23
Applicant: Worcester Polytechnic Institute , Ascend Elements, Inc.
Inventor： Yan Wang , Diran Apelian , Haiyang Zou
CPC classification number: H01M10/54 , C22B1/24 , C22B7/007 , C22B23/0423 , C22B23/043 , C22B23/0438 , C22B26/22
Abstract: Cathode material from exhausted lithium ion batteries are dissolved in a solution for extracting the useful elements Co (cobalt), Ni (nickel), Al (Aluminum) and Mn (manganese) to produce active cathode materials for new batteries. The solution includes compounds of desirable materials such as cobalt, nickel, aluminum and manganese dissolved as compounds from the exhausted cathode material of spent cells. Depending on a desired proportion, or ratio, of the desired materials, raw materials are added to the solution to achieve the desired ratio of the commingled compounds for the recycled cathode material for new cells. The desired materials precipitate out of solution without extensive heating or separation of the desired materials into individual compounds or elements. The resulting active cathode material has the predetermined ratio for use in new cells, and avoids high heat typically required to separate the useful elements because the desired materials remain commingled in solution.
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公开(公告)号：US11827998B2
公开(公告)日：2023-11-28
申请号：US17330922
申请日：2021-05-26
Applicant: Worcester Polytechnic Institute
Inventor： Yan Wang , Xiaotu Ma , Eric Gratz , Jinzhao Fu , Panawan Vanaphuti
CPC classification number: C30B1/02 , C30B1/12 , C30B29/22 , H01M4/505 , H01M4/525 , H01M10/54 , H01M2004/028
Abstract: A recycling and synthesis of charge material for secondary batteries generates single-crystal charge materials for producing batteries with greater charge cycle longevity. Charge material particles undergo a heating for fusing or enhancing grain boundaries between polycrystalline particles. The resulting, more well-defined grain boundaries are easily etched by a relatively weak mineral acid solution. The acid solution removes material at the grain boundaries to separate secondary particles into primary particles along the grain boundaries. The resulting single crystal (monocrystalline) charge material particles are washed and filtered, and typically re-sintered to accommodate any needed lithium (lithium carbonate), and result in a charge material with larger surface area, higher lithium diffusivity and lower cation ordering.
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公开(公告)号：US11769916B2
公开(公告)日：2023-09-26
申请号：US17964555
申请日：2022-10-12
Applicant: Worcester Polytechnic Institute , Ascend Elements, Inc.
Inventor： Yan Wang , Diran Apelian , Haiyang Zou
CPC classification number: H01M10/54 , C22B1/24 , C22B7/007 , C22B23/043 , C22B23/0423 , C22B23/0438 , C22B26/22
Abstract: Cathode material from exhausted lithium ion batteries are dissolved in a solution for extracting the useful elements Co (cobalt), Ni (nickel), Al (Aluminum) and Mn (manganese) to produce active cathode materials for new batteries. The solution includes compounds of desirable materials such as cobalt, nickel, aluminum and manganese dissolved as compounds from the exhausted cathode material of spent cells. Depending on a desired proportion, or ratio, of the desired materials, raw materials are added to the solution to achieve the desired ratio of the commingled compounds for the recycled cathode material for new cells. The desired materials precipitate out of solution without extensive heating or separation of the desired materials into individual compounds or elements. The resulting active cathode material has the predetermined ratio for use in new cells, and avoids high heat typically required to separate the useful elements because the desired materials remain commingled in solution.
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Patent Agency Ranking
公开(公告)号：US20210372001A1
公开(公告)日：2021-12-02
申请号：US17330922
申请日：2021-05-26
Applicant: Worcester Polytechnic Institute
Inventor： Yan Wang , Xiaotu MA , Eric Gratz , Jinzhao Fu , Panawan Vanaphuti
Abstract: A recycling and synthesis of charge material for secondary batteries generates single-crystal charge materials for producing batteries with greater charge cycle longevity. Charge material particles undergo a heating for fusing or enhancing grain boundaries between polycrystalline particles. The resulting, more well-defined grain boundaries are easily etched by a relatively weak mineral acid solution. The acid solution removes material at the grain boundaries to separate secondary particles into primary particles along the grain boundaries. The resulting single crystal (monocrystalline) charge material particles are washed and filtered, and typically re-sintered to accommodate any needed lithium (lithium carbonate), and result in a charge material with larger surface area, higher lithium diffusivity and lower cation ordering.
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公开(公告)号：US10522884B2
公开(公告)日：2019-12-31
申请号：US15358862
申请日：2016-11-22
Applicant: Worcester Polytechnic Institute
Inventor： Yan Wang , Eric Gratz , Qina Sa , Zhangfeng Zheng , Joseph Heelan
IPC: H01M10/00 , H01M10/54 , C01G53/00 , C22B3/02 , C22B7/00 , C22B47/00 , H01M4/505 , H01M4/525 , C22B26/12 , H01M10/0525
Abstract: Cathode material from exhausted lithium ion batteries are dissolved in a solution for extracting the useful elements Co (cobalt), Ni (nickel), Al (Aluminum) and Mn (manganese) to produce active cathode materials for new batteries. The solution includes compounds of desirable materials such as cobalt, nickel, aluminum and manganese dissolved as compounds from the exhausted cathode material of spent cells. Depending on a desired proportion, or ratio, of the desired materials, raw materials are added to the solution to achieve the desired ratio of the commingled compounds for the recycled cathode material for new cells. The desired materials precipitate out of solution without extensive heating or separation of the desired materials into individual compounds or elements. The resulting active cathode material has the predetermined ratio for use in new cells, and avoids high heat typically required to separate the useful elements because the desired materials remain commingled in solution.
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公开(公告)号：US20250137154A1
公开(公告)日：2025-05-01
申请号：US18934563
申请日：2024-11-01
Applicant: Worcester Polytechnic Institute
Inventor： Yan Wang , Panya Thanwisai , Zeyi Yao
IPC: C25C1/06
Abstract: Production of high purity iron powder employs high efficiency low temperature electrolysis resulting in a process requiring substantially less energy with no CO2 gas and has high energy reduction. Configurations provide a renewable electricity supply that is environmental benign with low energy consumption. A hematite (Fe2O3), carbon and highly concentrated NaOH combine to form an electronically and ionically conductive suspension for iron production. The suspension is flowable which can also be applied to a flow electrolysis system. High purity iron powder is produced at the cathode side while the anode side can produce O2 gas as a byproduct.
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公开(公告)号：US20250050394A1
公开(公告)日：2025-02-13
申请号：US18800633
申请日：2024-08-12
Applicant: Worcester Polytechnic Institute
IPC: B09B3/80 , B09B3/38 , B09B3/70 , B09B101/15 , C01B33/18
Abstract: A recycling process for exhausted, end-of-life solar panels achieves substantial recovery of silicon and silver, as well as other materials, from a recycling stream of discarded solar panels. Agitation and shredding of the solar panels yield a granular mass, which can be separated by particle size to yield the silicon rich solar cell material. Leaching with a strong base such as sodium hydroxide draws the silicon into the leach solution. Filtration of the leach solution draws off the silicon-rich solution and allows filtration of other valuable materials such as silver. Addition of an acid such as hydrochloric acid to the leach solution then precipitates the silicon into a nano silica powder of in the form of high purity silicon dioxide. The high purity silicon dioxide provides raw materials for recycled solar panels, lithium-ion batteries and other uses depending on the purity.
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公开(公告)号：US12074302B2
公开(公告)日：2024-08-27
申请号：US17841152
申请日：2022-06-15
Applicant: Worcester Polytechnic Institute
Inventor： Yan Wang , Eric Gratz , Qina Sa , Zhangfeng Zheng , Joseph Heelan , Kee-Chan Kim
CPC classification number: H01M10/54 , C22B1/24 , C22B7/007 , C22B23/0423 , C22B23/043 , C22B23/0438 , C22B26/22
Abstract: Cathode material from exhausted lithium ion batteries are dissolved in a solution for extracting the useful elements Co (cobalt), Ni (nickel), Al (Aluminum) and Mn (manganese) to produce active cathode materials for new batteries. The solution includes compounds of desirable materials such as cobalt, nickel, aluminum and manganese dissolved as compounds from the exhausted cathode material of spent cells. Depending on a desired proportion, or ratio, of the desired materials, raw materials are added to the solution to achieve the desired ratio of the commingled compounds for the recycled cathode material for new cells. The desired materials precipitate out of solution without extensive heating or separation of the desired materials into individual compounds or elements. The resulting active cathode material has the predetermined ratio for use in new cells, and avoids high heat typically required to separate the useful elements because the desired materials remain commingled in solution.
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