-
公开(公告)号：US11196045B2
公开(公告)日：2021-12-07
申请号：US15886396
申请日：2018-02-01
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Gayatri V. Dadheech , Li Yang , Mark W. Verbrugge
Abstract: Methods of forming a lithium-based negative electrode assembly are provided. A surface of a metal current collector is treated with a reducing plasma gas so that after the treating, a treated surface of the metal current collector is formed that has a contact angle of less than or equal to about 10° and has less than or equal to about 5% metal oxides. The metal current collector may include a metal, such as copper, nickel, and iron. A lithium metal is applied to the treated surface of the metal current collector in an environment substantially free from oxidizing species. Lithium metal flows over and adheres to the treated surface to form a layer of lithium. The layer of lithium may be a thin layer having a thickness of ≥about 1 μm to ≤about 75 μm thus forming the lithium metal negative electrode assembly.
-
公开(公告)号：US20210044168A1
公开(公告)日：2021-02-11
申请号：US16531631
申请日：2019-08-05
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Anthony M. Coppola , Gayatri V. Dadheech , Alireza Fatemi
Abstract: An electric machine is described, and includes a rotor that is rotatably disposed in a stator. The rotor includes a rotatable shaft that is disposed on a longitudinal axis, and a plurality of laminations that are disposed on the rotatable shaft. The plurality of laminations are arranged on the rotatable shaft to form a plurality of axially-disposed cavities, wherein each of the cavities is defined by a surface. A coating is disposed on the surfaces of the cavities, and a curable filler material is introduced into each of the cavities. The curable filler material adheres to the plurality of laminations via the coating.
-
公开(公告)号：US10583428B2
公开(公告)日：2020-03-10
申请号：US15598829
申请日：2017-05-18
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Thomas A. Seder , James A. Carpenter , Gayatri V. Dadheech
Abstract: A self-cleaning film system configured for reducing a visibility of a contaminant includes a substrate and a film. The film includes a monolayer defining a plurality of cavities and formed from a first material having a first surface energy, and a plurality of patches disposed within the plurality of cavities. Each of the patches is formed from a photocatalytic material having a second surface energy that is higher than the first. The film has a touchpoint area having a first use frequency, and a second area having a second use frequency that is less than the first. The patches are present in the touchpoint area in a first concentration and are configured to direct the contaminant towards the second area. The patches are present in the second area in a second concentration that is higher than the first and are configured to reduce the visibility of the contaminant.
-
公开(公告)号：US20190336946A1
公开(公告)日：2019-11-07
申请号：US15972838
申请日：2018-05-07
Applicant: GM Global Technology Operations LLC
Inventor： Gayatri V. Dadheech , Thomas A. Seder , James A. Carpenter
Abstract: A self-cleaning film system includes a substrate and a self-cleaning film disposed on the substrate. The self-cleaning film includes a monolayer formed from an oleophobic material, and a first plurality of regions disposed within the monolayer in a non-periodic pattern such that each of the first plurality of regions abuts and is surrounded by the oleophobic material. Each of the first plurality of regions includes a photocatalytic material.
-
公开(公告)号：US20190237758A1
公开(公告)日：2019-08-01
申请号：US15886396
申请日：2018-02-01
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Gayatri V. Dadheech , Li Yang , Mark W. Verbrugge
IPC: H01M4/38 , H01M10/0525 , H01M4/66 , H01M4/04
CPC classification number: H01M4/382 , H01M4/0419 , H01M4/661 , H01M10/0525 , H01M2004/027
Abstract: Methods of forming a lithium-based negative electrode assembly are provided. A surface of a metal current collector is treated with a reducing plasma gas so that after the treating, a treated surface of the metal current collector is formed that has a contact angle of less than or equal to about 10° and has less than or equal to about 5% metal oxides. The metal current collector may include a metal, such as copper, nickel, and iron. A lithium metal is applied to the treated surface of the metal current collector in an environment substantially free from oxidizing species. Lithium metal flows over and adheres to the treated surface to form a layer of lithium. The layer of lithium may be a thin layer having a thickness of ≥about 1 μm to ≤about 75 μm thus forming the lithium metal negative electrode assembly.
-
Patent Agency Ranking
公开(公告)号：US20180333756A1
公开(公告)日：2018-11-22
申请号：US15598838
申请日：2017-05-18
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Thomas A. Seder , James A. Carpenter , Gayatri V. Dadheech
IPC: B08B17/02 , B01J21/06 , B01J23/50 , B01J35/00 , C23C14/08 , C23C14/06 , C23C14/35 , C23C14/58 , G02B1/18 , G02B1/115
Abstract: A self-cleaning film system includes a substrate and an anti-reflection film disposed on the substrate. The anti-reflection film includes a first sheet formed from titanium dioxide, a second sheet formed from silicon dioxide and disposed on the first sheet, and a third sheet formed from titanium dioxide and disposed on the second sheet. The system includes a self-cleaning film disposed on the anti-reflection film and including a monolayer disposed on the third sheet and formed from a fluorinated material selected from the group consisting of fluorinated organic compounds, fluorinated inorganic compounds, and combinations thereof. The self-cleaning film includes a first plurality of regions disposed within the monolayer such that each of the first plurality of regions abuts and is surrounded by the fluorinated material and includes a photocatalytic material.
-
公开(公告)号：US20180333710A1
公开(公告)日：2018-11-22
申请号：US15598845
申请日：2017-05-18
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Gayatri V. Dadheech , Thomas A. Seder , James A. Carpenter
CPC classification number: B01J35/004 , B01J21/063 , B08B17/02 , C09D5/00 , C09D5/1681 , G02B1/11 , G02B1/18 , G02B27/0006
Abstract: A self-cleaning film system includes a substrate and a film. The film includes a monolayer formed from fluorinated material and a first plurality of regions disposed within the monolayer and spaced apart from one another such that each of the first plurality of regions abuts, is surrounded by, and is not covered by the fluorinated material. Each of the first regions includes a photocatalytic material. A method of forming a self-cleaning film system includes depositing a monolayer formed from fluorinated material onto a substrate. After depositing, the method includes ablating the monolayer to define a first plurality of cavities therein, wherein each of the first cavities is spaced apart from an adjacent one of the first cavities along the monolayer. After ablating, the method includes embedding a photocatalytic material into each of the first plurality of cavities to form a film on the substrate and thereby form the film system.
-
公开(公告)号：US20180320023A1
公开(公告)日：2018-11-08
申请号：US16033924
申请日：2018-07-12
Applicant: GM Global Technology Operations LLC
Inventor： Gayatri V. Dadheech , Thomas A. Seder , James A. Carpenter
IPC: C09D183/08 , G03F7/40 , B01J21/06 , G03F7/075 , B01J31/00 , B01J33/00 , B01J35/00 , B01J37/02 , B05D5/08 , B01J37/34 , B05D1/18 , B05D3/06 , B05D3/10
Abstract: A method of forming a self-cleaning film system includes depositing a photocatalytic material onto a substrate to form a first layer. The method also includes disposing a photoresist onto the first layer and then exposing the photoresist to light so that the photoresist has a developed portion and an undeveloped portion. The method includes removing the undeveloped portion so that the developed portion protrudes from the first layer. After removing, the method includes depositing a perfluorocarbon siloxane polymer onto the first layer to surround and contact the developed portion. After depositing the perfluorocarbon siloxane polymer, the method includes removing the developed portion to thereby form the self-cleaning film system.
-
公开(公告)号：US20180151887A1
公开(公告)日：2018-05-31
申请号：US15363445
申请日：2016-11-29
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Li Yang , Mei Cai , Fang Dai , Gayatri V. Dadheech
CPC classification number: H01M4/628 , H01M2/1653 , H01M2/1673 , H01M4/0404 , H01M4/366 , H01M4/382 , H01M10/052 , H01M10/0565 , H01M10/4235 , H01M2004/027 , H01M2300/0085
Abstract: An example of a negative electrode includes a lithium metal active material and a coating disposed on the lithium metal active material. The coating consists of one of: (i) a polymeric ionic liquid; or (ii) a VEC polymer formed from vinyl ethylene carbonate; or (iii) a homo-polymer formed from ethylene glycol methyl ether methacrylate, triethylene glycol methyl ether methacrylate, or polyethylene glycol methyl ether methacrylate; or (iv) a combination of any two or more of (i), (ii), and (iii).
-
公开(公告)号：US20170141382A1
公开(公告)日：2017-05-18
申请号：US14945151
申请日：2015-11-18
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Gayatri V. Dadheech , Xingcheng Xiao , Mei Cai
Abstract: In an example of a method for making a sulfur-based positive electrode active material, a carbon layer is formed on a sacrificial nanomaterial. The carbon layer is coated with titanium dioxide to form a titanium dioxide layer. The sacrificial nanomaterial is removed to form a hollow material including a hollow core surrounded by a carbon and titanium dioxide double shell. Sulfur is impregnated into the hollow core.
-
-
-
-
-
-
-
-
-
Search Results
69
records
(took 0.025 seconds)
