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公开(公告)号：US20230197930A1
公开(公告)日：2023-06-22
申请号：US17552533
申请日：2021-12-16
IPC分类号： H01M4/36 , H01M10/0525 , H01M10/0569 , H01M10/0568 , H01M4/04 , H01M4/525 , H01M4/505 , H01M4/58 , H01M4/62
CPC分类号： H01M4/364 , H01M10/0525 , H01M10/0569 , H01M10/0568 , H01M4/0404 , H01M4/0471 , H01M4/525 , H01M4/505 , H01M4/5825 , H01M4/625 , H01M4/622 , H01M2300/0028 , H01M2004/028
摘要： An electrode for an electrochemical cell includes a positive electroactive material and a polymeric binder. The positive electroactive material is present in an amount greater than 95 weight percent of the electrode. The positive electroactive material includes first, second, and third electroactive materials. The first electroactive material includes a lithium nickel manganese cobalt oxide (NMC), a lithium nickel manganese cobalt aluminum oxide (NMCA), a lithiated nickel cobalt aluminate (NCA), or a combination thereof. The first electroactive material has a nickel content of greater than or equal to about 60 mole percent. The second electroactive material includes a phosphate-containing positive electroactive material. The third electroactive material includes a lithium manganese oxide (LMO). In certain aspects, the second electroactive material includes a lithium iron phosphate (LFP), a lithium manganese iron phosphate (LMFP), lithium vanadium phosphate (LVP), a transition metal doped lithium vanadium phosphate (LVMP), lithium vanadium fluorophosphate (LVPF), or a combination thereof.
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公开(公告)号：US20230077943A1
公开(公告)日：2023-03-16
申请号：US17473856
申请日：2021-09-13
发明人： Zhongyi LIU , Xiaosong HUANG , Bradley R. FRIEBERG
IPC分类号： C01B33/06 , H01M10/0525 , C01B33/32
摘要： Methods of making a negative electrode material for an electrochemical cell that cycles lithium ions is provided. The method may include centrifugally distributing a molten precursor comprising silicon, oxygen, and lithium by contacting the molten precursor with a rotating surface in a centrifugal atomizing reactor. The molten precursor is formed by combining lithium, silicon, and oxygen. For example, the precursor may be formed from a mixture comprising silicon dioxide (SiO2), lithium oxide (Li2O), and silicon (Si). The method may further include solidifying the molten precursor to form a plurality of substantially round solid electroactive particles comprising a mixture of lithium silicide (LiySi, where 0
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公开(公告)号：US20230246182A1
公开(公告)日：2023-08-03
申请号：US17591740
申请日：2022-02-03
CPC分类号： H01M4/525 , H01M4/623 , H01M4/625 , H01M4/364 , H01M4/505 , H01M4/0404 , H01M4/1391
摘要： An electrode is provided that includes a high-nickel electroactive material having greater than or equal to about 0.6 mole fraction of nickel, and greater than or equal to about 0.1 wt. % to less than or equal to about 2 wt. % of a sulfonated aromatic ionomer additive. The electrode is prepared by contacting an electroactive material slurry with one or more surfaces of a current collector, where a solids portion of the slurry includes greater than or equal to about 45 wt. % to less than or equal to about 99 wt. % of a high-nickel electroactive material, and greater than or equal to about 0.1 wt. % to less than or equal to about 2 wt. % of a sulfonated aromatic ionomer additive.
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公开(公告)号：US20220255130A1
公开(公告)日：2022-08-11
申请号：US17171489
申请日：2021-02-09
发明人： Bradley R. FRIEBERG
IPC分类号： H01M10/0565 , H01M10/0525 , H01M10/0562 , H01M4/133 , H01M4/62
摘要： The present disclosure relates to solid-state batteries and methods for forming solid-state batteries. The method includes contacting a polymeric precursor and an assembled battery including two or more electrodes defining a space therebetween, where the polymeric precursor fills the space defined between the two or more electrodes and any voids between the solid-state electroactive particles of each electrode; and reacting the polymeric precursor to form a polymeric gel electrolyte that forms a solid-state electrolyte layer in the space between the two or more electrodes and fills the voids between the solid-state electroactive particles of the electrodes. In other instances the method includes disposing the polymeric precursor on exposed surfaces of an electrode and reacting the polymeric precursor to form the solid-state electrolyte. In still other instances, the method includes disposing the polymeric precursor on a releasable film and reacting the polymeric precursor to form the free-standing electrolyte layer.
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公开(公告)号：US20240243259A1
公开(公告)日：2024-07-18
申请号：US18094163
申请日：2023-01-06
发明人： Mengyuan CHEN , Zhongyi LIU , Bradley R. FRIEBERG , Xiaosong HUANG , Nicholas Paul William PIECZONKA
CPC分类号： H01M4/366 , C01G53/50 , H01M4/505 , H01M4/525 , C01P2002/54 , C01P2004/86 , C01P2006/40
摘要： An electroactive material for an electrochemical cell includes one or more conductive oxygen storage material coatings or layers. The electroactive material includes a plurality of electroactive material particles disposed to form an electroactive material layer. In certain variations, at least a portion of the plurality of electroactive material particles may have a coating that includes a conductive oxygen storage material. In other variations, a conductive oxygen storage material layer may be disposed on one or more surfaces of the electroactive material layer. In still other variations, at least a portion of the plurality of electroactive material particles may have a coating that includes a conductive oxygen storage material, and a conductive oxygen storage material layer may be disposed on one or more surfaces of the electroactive material layer. The one or more conductive oxygen storage material coatings or layers may help to improve the thermal stability of the electroactive materials.
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公开(公告)号：US20240243258A1
公开(公告)日：2024-07-18
申请号：US18094145
申请日：2023-01-06
发明人： Zhongyi LIU , Mengyuan CHEN , Bradley R. FRIEBERG , Xiaosong HUANG , Ratandeep Singh KUKREJA , Nicholas Paul William PIECZONKA
CPC分类号： H01M4/366 , C01G53/50 , H01M4/505 , H01M4/525 , C01P2002/52 , C01P2004/02 , C01P2004/84 , C01P2006/40
摘要： An electroactive material for an electrochemical cell includes one or more oxygen storage material coatings or layers. The electroactive material may include a plurality of electroactive material particles disposed to form an electroactive material layer. In certain variations, at least a portion of the plurality of electroactive material particles may have a coating that includes an oxygen storage material. In other variations, an oxygen storage material layer may be disposed on one or more surfaces of the electroactive material layer. In still other variations, at least a portion of the plurality of electroactive material particles may have a coating that includes an oxygen storage material, and an oxygen storage material layer may be disposed on one or more surfaces of the electroactive material layer. The one or more oxygen storage material coatings or layers may help to improve the thermal stability of the electroactive materials.
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公开(公告)号：US20240030456A1
公开(公告)日：2024-01-25
申请号：US17869471
申请日：2022-07-20
IPC分类号： H01M4/66 , H01M4/62 , H01M10/0525
CPC分类号： H01M4/663 , H01M4/626 , H01M4/667 , H01M10/0525
摘要： The present disclosure provides an electrode assembly for use in an electrochemical cell that cycles lithium ions. The electrode assembly includes a current collector, an electroactive material layer disposed parallel with the current collector, and a protective coating disposed between the current collector and the electroactive material layer. The electroactive material layer is defined by a plurality of electroactive material particles. At least a portion of the electroactive material particles of the plurality of electroactive material particles includes a protective particle coating. The protective particle coating is a carbon coating that includes a first carbonaceous material. The protective coating is a carbon layer that includes a second carbonaceous material. The first and second carbonaceous materials are independently selected from the group consisting of: graphite, graphene, carbon black, soft carbon, hard carbon, carbon fibers, carbon nanotubes, mesoporous carbon materials, biomass derived carbon materials, and combinations thereof.
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公开(公告)号：US20230282881A1
公开(公告)日：2023-09-07
申请号：US17884335
申请日：2022-08-09
发明人： Bradley R. FRIEBERG , Zhe LI , Yong LU
IPC分类号： H01M10/0565 , H01M10/0525 , H01M50/46
CPC分类号： H01M10/0565 , H01M10/0525 , H01M50/46 , H01M2300/0082
摘要： A polymer gel electrolyte for an electrochemical cell that cycles lithium ions is provided. The polymer gel electrolyte includes a polymeric blend comprising polyvinylidene fluoride-hexafluoropropylene (PVDF-HFP) and polyvinylidene fluoride (PVDF), wherein a mass ratio of PVDF-HFP to PVDF is greater than or equal to about 1.5:1 to less than or equal to about 19:1 in the polymeric blend. Further, one or more plasticizers are included selected from the group consisting of: ethylene carbonate (EC), diethylene carbonate (DEC), vinyl ethylene carbonate (VEC), dimethylene carbonate (DMC), ethylmethylene carbonate (EMC), propylene carbonate (PC), gamma butyrolactone (GBL), diethylene glycol dimethyl ether (Diglyme), triethylene glycol dimethyl ether (Triglyme), tetraethylene glycol dimethyl ether (Tetraglyme), Triethyl Phosphate (TEP), 1-butyl-3-methylimidazolium-bis(trifluoromethylsulfonyl)imide (BMIM-TFSI), 1-Ethyl-3-methylimidazolium-bis(trifluoromethylsulfonyl)imide (EMI-TFSI), alkyl pyrrolidinium bis(trifluoromethanesulfonyl)imide (PY-TFSI), piperidinium bis(trifluoromethanesulfonyl)imide (PP-TFSI), N-alkyl-N-butylpyrrolidinium bis(trifluoromethanesulfonyl)imide (PYRA-TFSI), and combinations thereof. The polymer gel electrolyte also includes one or more lithium salts.
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公开(公告)号：US20220302435A1
公开(公告)日：2022-09-22
申请号：US17204126
申请日：2021-03-17
发明人： Xiaosong HUANG , Zhongyi LIU , Bradley R. FRIEBERG
IPC分类号： H01M4/1395 , H01M10/0525 , H01M4/38 , H01M4/36 , H01M4/04
摘要： The present disclosure provides a method of making a negative electrode material for an electrochemical cell that cycles lithium ions. The method includes centrifugally distributing a precursor including silicon, lithium, and an additional metal (M) selected from the group consisting of: aluminum (Al), chromium (Cr), titanium (Ti), niobium (Nb), molybdenum (Mo), zirconium (Zr), yttrium (Y), cerium (Ce), and combinations thereof by contacting the precursor with a rotating surface in a centrifugal atomizing reactor and solidifying the precursor to form a plurality of substantially round solid electroactive particles that include Li4.4xSixMy, where x is greater than 0 to less than or equal to about 0.85 and y corresponds to a weight percent of M that is greater than or equal to 0.1 wt. % to less than or equal to about 10 wt. %.
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公开(公告)号：US20210175491A1
公开(公告)日：2021-06-10
申请号：US16706351
申请日：2019-12-06
IPC分类号： H01M4/1395 , H01M10/0525 , H01M4/04
摘要： A method of making a negative electrode material for an electrochemical cell that cycles lithium ions is provided that includes centrifugally distributing a molten precursor comprising silicon and lithium by contacting the molten precursor with a rotating surface in a centrifugal atomizing reactor. The molten precursor is solidified to form a plurality of substantially round solid electroactive particles comprising an alloy of lithium and silicon and having a D50 diameter of less than or equal to about 20 micrometers. In certain variations, the negative electroactive material particles may further have one or more coatings disposed thereon, such as a carbonaceous coating and/or an oxide-based coating.
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