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公开(公告)号：US11664542B2
公开(公告)日：2023-05-30
申请号：US17551636
申请日：2021-12-15
申请人： UT-Battelle, LLC
发明人： Ilias Belharouak , Yaocai Bai , Rachid Essehli
CPC分类号： H01M10/54
摘要： A method for recycling lithium-ion battery materials is provided. The method includes isolating a composite electrode comprising an electrode material adhered to a current collector with a polyvinylidene difluoride (PVDF) binder. The composite electrode is combined with triethyl phosphate (TEP) as a solvent to form a mixture. The electrode material is delaminated from the current collector in the mixture to give a free electrode material and a free current collector. Each of the free electrode material and the free current collector is recovered from the mixture. The free electrode material may be reused to prepare another composite electrode, as well as a lithium-ion battery comprising the same, which are also disclosed.
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公开(公告)号：US20210367267A1
公开(公告)日：2021-11-25
申请号：US17325484
申请日：2021-05-20
申请人： UT-Battelle, LLC
发明人： Ruhul Amin , Rachid Essehli , Ilias Belharouak
IPC分类号： H01M10/0562
摘要： A super ion conductor composition is disclosed. The super ion conductor composition has the general formula: A1+xMx/2Zr2−x/2(PO4)3, where each A is independently Na or Li, M is Mn or Mg, and subscript x is from 0.5 to 3. A solid electrolyte comprising the super ion conductor composition, and a method of preparing the solid electrolyte, are also disclosed. The method comprises combining a zirconium compound, a manganese or magnesium compound, a sodium compound, and a phosphate compound to give a mixture; and calcining the mixture to give the super ion conductor composition, thereby preparing the solid electrolyte. Functional materials and devices comprising the super ion conductor composition are also disclosed, including a catholyte composition, an ion conducting solid electrolyte membrane, as well as all-solid-state batteries.
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公开(公告)号：US20240339630A1
公开(公告)日：2024-10-10
申请号：US18627671
申请日：2024-04-05
申请人： UT-Battelle, LLC
发明人： Marm Dixit , Ruhul Amin , Rachid Essehli , Ilias Belharouak , Mahalingam Balasubramanian , Nitin Muralidharan
IPC分类号： H01M6/18 , H01M10/0562
CPC分类号： H01M6/182 , H01M10/0562 , H01M2300/008
摘要： A method of making an anti-perovskite solid electrolyte is provided. The method includes: providing an anti-perovskite material that is in the form of a powder; heating a die to a temperature between approximately 200 and 400° C.; loading the anti-perovskite powder into the heated die; compressing the anti-perovskite powder in the heated die; and allowing the heated die to cool to ambient temperature under pressure by maintaining the compression until the die has cooled to ambient temperature. The compression may be performed uniaxially and at a pressure in a range of 1 to 500 MPa. The anti-perovskite may undergo phase transformation, densification, and grain growth during compression at the elevated temperature. An anti-perovskite solid electrolyte formed by the method, and an anti-perovskite solid-state battery including the solid electrolyte are also provided.
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公开(公告)号：US20220200073A1
公开(公告)日：2022-06-23
申请号：US17551395
申请日：2021-12-15
申请人： UT-Battelle, LLC
发明人： Ilias Belharouak , Yaocai Bai , Rachid Essehli
IPC分类号： H01M10/54 , H01M10/0525 , H01M4/62 , H01M4/66 , H01M4/48
摘要： A method for recycling lithium-ion battery materials is provided. The method includes isolating a composite electrode that includes an electrode material adhered to a current collector. The isolated composite electrode is combined with a citrate-based solvent to form a mixture. The electrode material is delaminated from the current collector in the mixture to give a free electrode material and a free current collector. Each of the free electrode material and the free current collector is recovered from the mixture. The free electrode material may be reused to prepare another composite electrode, as well as a lithium-ion battery comprising the same, which are also disclosed.
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公开(公告)号：US11721850B2
公开(公告)日：2023-08-08
申请号：US17386660
申请日：2021-07-28
申请人： UT-Battelle, LLC
发明人： Yaocai Bai , Ilias Belharouak , Rachid Essehli
IPC分类号： H01M10/54 , H01M10/0525 , H01M10/623 , H01M4/62 , H01M4/583 , H01M4/66 , H01M4/133
摘要： An improved method of recycling lithium-ion battery anode scraps is provided. The method involves isolating an anode scrap including a graphite anode film adhered to a current collector foil with a polyvinylidene fluoride binder. The anode scrap is combined with deionized water to form a first mixture. The graphite anode film is delaminated from the current collector foil to form a second mixture comprising a free collector foil and a free graphite anode film. The free graphite anode film is filtered and dried from the second mixture to recover the free graphite anode film. The free graphite anode film is combined with a solvent comprising N-methyl-2-pyrrolidone (NMP) to form an anode formation slurry. The slurry is coated onto a copper current collector to produce a new anode.
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公开(公告)号：US20200251734A1
公开(公告)日：2020-08-06
申请号：US16781063
申请日：2020-02-04
申请人： UT-Battelle, LLC
IPC分类号： H01M4/525 , H01M10/0525 , H01M4/505 , C01G53/00
摘要： A cathode active material precursor for a lithium metal oxide is provided. The cathode active material precursor comprises a metal-containing oxyhydroxide. The metal-containing oxyhydroxide comprises nickel and an additional metal. At least 50 mol. % of the nickel of the metal-containing oxyhydroxide has an oxidation state of +3. A method of forming a cathode active material precursor is also provided. The method comprises combining a nickel-containing compound, an additional metal-containing compound, an oxidizing agent, and a solvent to form a solution. The method further comprises exposing the solution to heat at a temperature of from about 30° C. to about 90° C. to form a precipitate comprising the metal-containing oxyhydroxide.
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公开(公告)号：US12027664B2
公开(公告)日：2024-07-02
申请号：US17325484
申请日：2021-05-20
申请人： UT-Battelle, LLC
发明人： Ruhul Amin , Rachid Essehli , Ilias Belharouak
IPC分类号： H01M10/0562
CPC分类号： H01M10/0562 , H01M2300/0077
摘要： A super ion conductor composition is disclosed. The super ion conductor composition has the general formula: A1+xMx/2Zr2−x/2(PO4)3, where each A is independently Na or Li, M is Mn or Mg, and subscript x is from 0.5 to 3. A solid electrolyte comprising the super ion conductor composition, and a method of preparing the solid electrolyte, are also disclosed. The method comprises combining a zirconium compound, a manganese or magnesium compound, a sodium compound, and a phosphate compound to give a mixture; and calcining the mixture to give the super ion conductor composition, thereby preparing the solid electrolyte. Functional materials and devices comprising the super ion conductor composition are also disclosed, including a catholyte composition, an ion conducting solid electrolyte membrane, as well as all-solid-state batteries.
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8.发明公开公开(公告)号：US20230361266A1
公开(公告)日：2023-11-09
申请号：US18142086
申请日：2023-05-02
申请人： UT-Battelle, LLC
IPC分类号： H01M4/04
CPC分类号： H01M4/045 , H01M4/0407
摘要： A method of improving interfacial contact at an electrode-to-solid-electrolyte interface in a solid-state battery cell is provided. The method includes providing a solid-state battery cell including a solid-state electrolyte and electrodes defining an anode and a cathode. Each of the anode and cathode are adjacent to the solid-state electrolyte at an interface. The method further includes electrochemically increasing interfacial contact between at least one of the electrodes and the solid-state electrolyte by applying a voltage pulse to the cell at a high current density for a short duration, wherein electrode material diffuses into pores formed in the solid electrolyte interface, thereby healing the pores and eliminating an interfacial space charge effect.
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公开(公告)号：US20220376240A1
公开(公告)日：2022-11-24
申请号：US17736426
申请日：2022-05-04
申请人： UT-Battelle, LLC
发明人： Huimin Luo , Sheng Dai , Tao Wang , Ilias Belharouak , Jianlin Li , Yaocai Bai
摘要： A method for relithiating cathode material from spent lithium-based batteries, the method comprising: (i) mixing delithiated cathode material and a lithium salt with an ionic liquid in which the lithium salt is at least partially soluble to form an initial mixture; (ii) heating the initial mixture to a temperature of 100° C. to 300° C. to result in relithiation of the delithiated cathode material; and (iii) separating the ionic liquid from the relithiated cathode material; wherein, in embodiments, the cathode material is a lithium metal oxide, wherein the metal is selected from the group consisting of Ni, Co, Fe, Mn, Al, Zr, Ti, Nb, and combinations thereof, or wherein the cathode material has the formula LiNixMnyCozO2, wherein x>0, y>0, z>0, and x+y+z=1; wherein, in some embodiments, the ionic liquid has a nitrogen-containing cationic portion, such as an imidazolium ionic liquid.
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公开(公告)号：US11508962B2
公开(公告)日：2022-11-22
申请号：US16781063
申请日：2020-02-04
申请人： UT-Battelle, LLC
IPC分类号： H01M4/525 , H01M10/0525 , H01M4/505 , C01G53/00 , H01M4/02
摘要： A cathode active material precursor for a lithium metal oxide is provided. The cathode active material precursor comprises a metal-containing oxyhydroxide. The metal-containing oxyhydroxide comprises nickel and an additional metal. At least 50 mol. % of the nickel of the metal-containing oxyhydroxide has an oxidation state of +3. A method of forming a cathode active material precursor is also provided. The method comprises combining a nickel-containing compound, an additional metal-containing compound, an oxidizing agent, and a solvent to form a solution. The method further comprises exposing the solution to heat at a temperature of from about 30° C. to about 90° C. to form a precipitate comprising the metal-containing oxyhydroxide.
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