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公开(公告)号:US20220069280A1
公开(公告)日:2022-03-03
申请号:US17005559
申请日:2020-08-28
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor: Xingcheng Xiao , Mark W. Verbrugge
IPC: H01M4/133 , H01M4/134 , H01M4/38 , H01M4/1395 , H01M4/04 , H01M4/36 , H01M4/60 , H01M10/0525 , H01M4/1393
Abstract: A composite electrode material may include a carbon-based matrix component and a silicon-based particulate component embedded in the carbon-based matrix component. The silicon-based particulate component may include a plurality of core-shell structures, with each core-shell structure including: a silicon core, an intermetallic layer overlying the core, and a graphitic shell surrounding the silicon core and the intermetallic layer. In a method of making the composite electrode material, a metal catalyst layer may be deposited on a plurality of silicon particles to form a plurality of precursor structures in particle form. The precursor structures may be dispersed in organic polymeric material to form a precursor electrode material, which may be heated in an inert environment to pyrolyze the organic polymeric material and transform the precursor electrode material into a composite electrode material.
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公开(公告)号:US11217781B2
公开(公告)日:2022-01-04
申请号:US16377814
申请日:2019-04-08
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor: Xingcheng Xiao
IPC: H01M4/04 , H01M4/134 , H01M4/62 , H01M10/052 , H01M10/0585 , H01M4/38 , H01M4/02
Abstract: Methods for manufacturing electrodes include applying a fluoropolymer film to a lithium-based host material, defluorinating the fluoropolymer film by heating to produce a lithium electrode having a solid electrolyte interface (SEI) layer including defluorinated fluoropolymers and at least about 5 wt. % LiF. The fluoropolymers can include one or more of fluorinated ethylenepropylene, perfluoroalkoxy alkanes, vinylidenefluoride, and copolymers of perfluoromethylvinylether and tetrafluoroethylene. The fluoropolymers can include one or more fluorinated monomers, including hexafluoropropylene, tetrafluoroethylene, ethylene-tetrafluoroethylene, perfluoroethers, and vinylidene fluoride. The —CF3 functional groups of the defluorinated fluoropolymers can be about 3 wt. % to about 10 wt. % of the SEI layer. The SEI layer can include about 30 wt. % to about 50 wt. % LiF. The method can include assembling a battery cell by disposing a battery separator between a cathode and the electrode, and disposing the battery separator, the cathode, and the electrode in an electrolyte.
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公开(公告)号:US20210408536A1
公开(公告)日:2021-12-30
申请号:US16911986
申请日:2020-06-25
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor: Meinan He , Jin Liu , Xingcheng Xiao , Mei Cai
IPC: H01M4/525 , H01M4/505 , H01M10/0525 , H01M4/583 , H01M4/62
Abstract: An electrode includes a domain material present in an amount of from about 90 to about 95 weight percent based on a total weight of the electrode. The domain material includes a component that has the formula: xLi2MnO3.(1−x)LiNiaMnbCo(1-a-b)O2, wherein x is greater than 0 and less than 1 and each of a and b is independently from about 0.1 to about 0.9 and the component is present in an amount of from about 50 to about 90 weight percent based on a total weight of the domain material. The domain material also includes an additive component having the formula LiFe1-yMnyPO4, wherein y is greater than 0 and less than 1, wherein the additive component is present in an amount of from about 10 to about 50 weight percent based on a total weight of the domain material. The electrode itself further includes a carbonaceous material and a binder.
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公开(公告)号:US10593988B2
公开(公告)日:2020-03-17
申请号:US14724703
申请日:2015-05-28
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor: Xingcheng Xiao , John S. Wang
IPC: H01M10/0525 , H01M2/16 , C25D7/06 , H01M10/058 , H01M10/052 , H01M4/139 , H01M10/04 , H01M4/04
Abstract: An electrochemical cell is formed. The cell includes a non-lithium negative electrode in contact with a lithium ion permeable negative electrode current collector, and a positive electrode disposed in contact with a lithium ion permeable positive electrode current collector. The non-lithium negative electrode and the positive electrode are lithium ion permeable. The cell also has a lithium source electrode including lithium ions. A respective microporous polymer separator is disposed between the lithium source electrode and each of the negative and positive electrodes; or a first separator is disposed between the lithium source electrode and one of the negative and positive electrodes, and a second separator is disposed between the negative and positive electrodes. An electrolyte is introduced into the electrochemical cell. A voltage potential is applied across the electrochemical cell to pre-lithiate any of the non-lithium negative electrode and positive electrode with lithium ions from the lithium source electrode.
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公开(公告)号:US20200047160A1
公开(公告)日:2020-02-13
申请号:US16056894
申请日:2018-08-07
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor: Xingcheng Xiao , Ming Yang , Gongshin Qi , Wei Li
Abstract: Methods for preparing a catalyst system, include providing a catalytic substrate comprising a catalyst support having a surface with a plurality of metal catalytic nanoparticles bound thereto and physically mixing and/or electrostatically combining the catalytic substrate with a plurality of oxide coating nanoparticles to provide a coating of oxide coating nanoparticles on the surface of the catalytic nanoparticles. The metal catalytic nanoparticles can be one or more of ruthenium, rhodium, palladium, osmium, iridium, and platinum, rhenium, copper, silver, and gold. Physically combining can include combining via ball milling, blending, acoustic mixing, or theta composition, and the oxide coating nanoparticles can include one or more oxides of aluminum, cerium, zirconium, titanium, silicon, magnesium, zinc, barium, lanthanum, iron, strontium, and calcium. The catalyst support can include one or more oxides of aluminum, cerium, zirconium, titanium, silicon, magnesium, zinc, barium, iron, strontium, and calcium.
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公开(公告)号:US10326136B2
公开(公告)日:2019-06-18
申请号:US14868878
申请日:2015-09-29
Applicant: GM Global Technology Operations LLC
Inventor: Xingcheng Xiao , Weidong Zhou
IPC: H01M4/13 , H01M4/587 , H01M4/36 , H01M4/38 , H01M4/58 , H01M10/052 , H01M10/0525 , H01M4/02
Abstract: An electrode material for an electrochemical cell, such as a lithium ion battery or a lithium sulfur battery, is provided. The electrode may be a negative anode. The electrode material comprises a composite comprising a porous matrix comprising a carbonized material. The electrode material further comprises a plurality of silicon particles homogeneously dispersed in the porous matrix of carbonized material. Each silicon particle of the plurality has an average particle diameter of greater than or equal to about 5 nanometers and less than or equal to about 20 micrometers.
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公开(公告)号:US20190067744A1
公开(公告)日:2019-02-28
申请号:US15691162
申请日:2017-08-30
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor: Xingcheng Xiao , Mark W. Verbrugge , Mei Cai , Sherman H. Zeng
IPC: H01M10/0585 , H01M10/04 , H01M2/02
CPC classification number: H01M10/0585 , H01M2/021 , H01M2/0275 , H01M2/0285 , H01M2/0287 , H01M2/361 , H01M2/362 , H01M10/0436 , H01M2220/30
Abstract: A method of manufacturing a lithium ion battery cell. A non-aqueous liquid electrolyte solution is placed in contact with particles of a lithium ion-exchanged zeolite material for a time sufficient to remove water molecules from the liquid electrolyte solution. Thereafter, the liquid electrolyte solution may be introduced into an electrochemical cell assembly and hermetically sealed within a cell casing to form a lithium ion battery cell.
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公开(公告)号:US20190067675A1
公开(公告)日:2019-02-28
申请号:US15692107
申请日:2017-08-31
Applicant: GM Global Technology Operations LLC
Inventor: Xingcheng Xiao
IPC: H01M4/04 , H01M4/60 , H01M4/38 , H01M10/0525
Abstract: A method of making a negative electrode for an electrochemical cell includes applying a fluoropolymer via a deposition process to one or more surface regions of an electroactive material. The electroactive material may be selected from the group consisting of: lithium metal, silicon metal, silicon-containing alloys, and combinations thereof. The fluoropolymer reacts with lithium to form a composite surface layer on the one or more surface regions that comprises an organic matrix material having lithium fluoride particles distributed therein. Electrochemical cells including such negative electrode are also provided.
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公开(公告)号:US09827562B2
公开(公告)日:2017-11-28
申请号:US15247506
申请日:2016-08-25
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor: Gongshin Qi , Ryan J. Day , Se H. Oh , Xingcheng Xiao , Ming Yang
IPC: B01D53/94 , B01J21/04 , B01J23/44 , B01J33/00 , B01J35/00 , B01J35/02 , B01J37/02 , B01J37/18 , C23C16/455 , F01N3/10
CPC classification number: B01J33/00 , B01D53/88 , B01D53/944 , B01D53/945 , B01D2251/2067 , B01D2255/1023 , B01D2255/2092 , B01D2255/90 , B01D2258/012 , B01J21/04 , B01J23/44 , B01J35/0006 , B01J35/026 , B01J37/0221 , B01J37/0248 , B01J37/18 , B01J37/349 , C23C16/45555 , F01N3/101 , F01N3/103 , F01N3/2828 , F01N2330/06 , F01N2330/14 , F01N2370/00 , Y02T10/22
Abstract: A catalytic converter includes a catalyst. The catalyst includes a support, platinum group metal (PGM) particles dispersed on the support, and a barrier formed on the support. The barrier is disposed between a first set of the PGM particles and a second set of the PGM particles to suppress aging of the PGM particles.
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公开(公告)号:US09780361B2
公开(公告)日:2017-10-03
申请号:US14539222
申请日:2014-11-12
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor: Xingcheng Xiao , Weidong Zhou
IPC: H01M4/1395 , H01M4/38 , H01M4/134 , H01M4/04 , C09K13/04 , C01B33/32 , H01M10/0568 , H01M4/36 , H01M4/62 , H01M10/0569 , H01M4/02 , H01M10/052
CPC classification number: H01M4/1395 , C01B33/325 , C09K13/04 , H01M4/0404 , H01M4/0421 , H01M4/0428 , H01M4/134 , H01M4/366 , H01M4/386 , H01M4/62 , H01M10/052 , H01M10/0568 , H01M10/0569 , H01M2004/021 , H01M2300/0028
Abstract: In an example of the method disclosed herein, SiOx (0
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