公开(公告)号：US09647254B2

公开(公告)日：2017-05-09

申请号：US14560322

申请日：2014-12-04

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Gayatri Vyas Dadheech ,  Mei Cai

IPC: H01M2/14 ,  H01M2/16 ,  C23C4/10 ,  C23C4/134 ,  B82Y30/00

CPC classification number: H01M2/145 ,  B82Y30/00 ,  C23C4/10 ,  C23C4/134 ,  H01M2/1646 ,  H01M2/1653 ,  H01M2/1686

Abstract: In a one-step method for preparing a coated separator, a suspension of i) a ceramic, ii) a cermet, iii) a ceramic with an electrolyte, or iv) a cermet with an electrolyte in a carrier liquid is plasma sprayed without a carrier gas. The carrier liquid is water, alcohol, ethylene glycol, or mixtures thereof.

公开(公告)号：US20150270555A1

公开(公告)日：2015-09-24

申请号：US14734047

申请日：2015-06-09

Applicant: GM Global Technology Operations LLC

Inventor： Gayatri Vyas Dadheech ,  Gerald W. Fly

IPC: H01M4/86 ,  H01M4/96 ,  H01M8/10 ,  H01M8/02 ,  H01M8/04 ,  H01M4/90 ,  H01M8/24

CPC classification number: H01M4/86 ,  C25D1/04 ,  C25D3/562 ,  H01M4/9041 ,  H01M4/96 ,  H01M8/0208 ,  H01M8/021 ,  H01M8/0213 ,  H01M8/0228 ,  H01M8/0258 ,  H01M8/0265 ,  H01M8/0267 ,  H01M8/0271 ,  H01M8/0297 ,  H01M8/04201 ,  H01M8/1004 ,  H01M2004/8694 ,  H01M2008/1095 ,  H01M2250/20 ,  Y02T90/32

Abstract: A bipolar plate assembly for a fuel cell includes a cathode plate disposed adjacent an anode plate. The cathode and anode plates are formed having a first thickness of a low contact resistance, high corrosion resistance material by a deposition process. The first and second unipolar plates are formed on a removable substrate, and a first perimeter of the first unipolar plate is welded to a second perimeter of the second unipolar plate to form a hermetically sealed coolant flow path.

Abstract translation: 用于燃料电池的双极板组件包括邻近阳极板设置的阴极板。 阴极和阳极板通过沉积工艺形成具有低接触电阻的第一厚度，高耐腐蚀性材料。 第一和第二单极板形成在可移除的基板上，并且第一单极板的第一周边焊接到第二单极板的第二周边以形成气密密封的冷却剂流动路径。

公开(公告)号：US10195602B2

公开(公告)日：2019-02-05

申请号：US15366991

申请日：2016-12-01

Applicant: GM Global Technology Operations LLC

Inventor： Gayatri Vyas Dadheech ,  Thomas A. Seder ,  James A. Carpenter

IPC: B01J21/04 ,  B01J21/06 ,  B01J35/00 ,  B01J35/02 ,  B01J37/00 ,  C07D279/20

Abstract: A photocatalytic system having enhanced photo efficiency/photonic efficacy is provided that includes a thin nucleation material coated on a substrate. The nucleation material enhances lattice matching for a subsequently deposited photocatalytic active material. Such a photocatalytic system may be used as a self-cleaning surface in an application where removal of fingerprints and other residue is desired. In certain aspects, the nucleation material comprises aluminum oxide (Al2O3) and the photocatalytic material comprises an anatase phase of titanium dioxide (TiO2) deposited over the nucleation material. A photocatalytic activity of the system is ≥ about 50% above a comparative photocatalytic activity where the photocatalytic active material is disposed directly on the substrate. Methods of making such photocatalytic systems are also provided.

公开(公告)号：US20150162602A1

公开(公告)日：2015-06-11

申请号：US14102216

申请日：2013-12-10

Applicant: GM Global Technology Operations LLC

Inventor： Gayatri Vyas Dadheech ,  Nicholas P. W. Pieczonka ,  Michael P. Balogh

IPC: H01M4/36 ,  H01M4/04 ,  H01M4/38 ,  H01M4/583 ,  H01M4/48

CPC classification number: H01M4/366 ,  H01M4/0423 ,  H01M4/0428 ,  H01M4/134 ,  H01M4/386 ,  H01M4/48 ,  H01M4/583 ,  H01M4/62 ,  H01M4/625 ,  H01M10/052

Abstract: An electrode material for use in an electrochemical cell, like a lithium ion battery, is provided. The electrode material may be a negative electrode comprising silicon. A nanocomposite surface coating comprising carbon and metal oxide comprising a metal selected from a group consisting of: titanium (Ti), aluminum (Al), tin (Sn), and combinations thereof is particularly useful with negative silicon-based electrodes to minimize or prevent charge capacity loss in the electrochemical cell. The coating may be ultra-thin with a thickness of less than or equal to about 60 nm. Methods for making such materials and using such coatings to minimize charge capacity fade in lithium ion electrochemical cells are likewise provided.

Abstract translation: 提供了一种用于电化学电池的电极材料，如锂离子电池。 电极材料可以是包含硅的负极。 包含碳和金属氧化物的纳米复合表面涂层包括选自钛（Ti），铝（Al），锡（Sn）及其组合的金属的金属和其组合对于负极硅基电极是特别有用的，以最小化或防止 电化学电池的充电容量损失。 涂层可以是超薄的，厚度小于或等于约60nm。 同样提供制造这种材料并使用这种涂层以最小化锂离子电化学电池中的充电容量衰减的方法。

公开(公告)号：US20150162583A1

公开(公告)日：2015-06-11

申请号：US14560322

申请日：2014-12-04

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Gayatri Vyas Dadheech ,  Mei Cai

IPC: H01M2/14 ,  H01M2/16

CPC classification number: H01M2/145 ,  B82Y30/00 ,  C23C4/10 ,  C23C4/134 ,  H01M2/1646 ,  H01M2/1653 ,  H01M2/1686

Abstract: In a one-step method for preparing a coated separator, a suspension of i) a ceramic, ii) a cermet, iii) a ceramic with an electrolyte, or iv) a cermet with an electrolyte in a carrier liquid is plasma sprayed without a carrier gas. The carrier liquid is water, alcohol, ethylene glycol, or mixtures thereof

Abstract translation: 在制备涂覆分离器的一步法中，i）陶瓷，ii）金属陶瓷，iii）具有电解质的陶瓷，或iv）在载体液体中具有电解质的金属陶瓷的悬浮液是等离子体喷涂而没有 载气。 载体液体是水，醇，乙二醇或其混合物

公开(公告)号：US20150056507A1

公开(公告)日：2015-02-26

申请号：US14464390

申请日：2014-08-20

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Gayatri Vyas Dadheech ,  Mei Cai ,  Li Yang

IPC: H01M4/36 ,  H01M4/13 ,  H01M10/052 ,  H01M4/38 ,  H01M4/62

CPC classification number: H01M4/366 ,  H01M4/0421 ,  H01M4/13 ,  H01M4/134 ,  H01M4/139 ,  H01M4/38 ,  H01M4/505 ,  H01M4/624 ,  H01M4/625

Abstract: An example of a positive electrode includes sulfur based active material particles, a carbon coating encapsulating the sulfur based active material particles, and a structure coating formed on a surface of the carbon coating. The structure coating is selected from the group consisting of a metal oxide composite structure, a mixed carbon and metal oxide composite structure, and a polymeric structure coating.

Abstract translation: 正极的实例包括硫基活性材料颗粒，包封硫基活性材料颗粒的碳涂层和形成在碳涂层的表面上的结构涂层。 结构涂层选自金属氧化物复合结构，混合碳和金属氧化物复合结构，以及聚合物结构涂层。

公开(公告)号：US20230253638A1

公开(公告)日：2023-08-10

申请号：US17666673

申请日：2022-02-08

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Gayatri Vyas Dadheech ,  Mark W. Verbrugge ,  Brian J. Koch ,  Jing Gao ,  Alok Warey

IPC: H01M10/48 ,  H01M10/42 ,  H01M10/0525 ,  H01M4/62

CPC classification number: H01M10/48 ,  H01M10/4285 ,  H01M10/0525 ,  H01M4/62 ,  H01M2220/20

Abstract: A system for detecting a lithium dendrite in a battery cell is provided. The system includes the battery cell including an anode and a cathode. The battery cell further includes a conductive prewarning layer disposed between the anode and the cathode and constructed with a porous material. The battery cell further includes a separator layer disposed between the conductive prewarning layer and the cathode, wherein the separator layer is configured for allowing ions to pass through the separator layer. The system further includes a sensor electrically connected to the anode and the conductive prewarning layer and monitoring data related to a voltage potential between the anode and the conductive prewarning layer. The data is useful to identify a decrease in the voltage potential between the anode and the conductive prewarning layer and diagnose existence of the lithium dendrite.

公开(公告)号：US09806326B2

公开(公告)日：2017-10-31

申请号：US14560278

申请日：2014-12-04

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Gayatri Vyas Dadheech ,  Mei Cai

IPC: H01M4/13 ,  H01M4/04 ,  H01M4/136 ,  H01M4/1397 ,  H01M4/134 ,  H01M4/1395 ,  H01M10/052 ,  H01M10/0566 ,  H01M4/02

CPC classification number: H01M4/0419 ,  H01M4/134 ,  H01M4/136 ,  H01M4/1395 ,  H01M4/1397 ,  H01M10/052 ,  H01M10/0566 ,  H01M2004/021 ,  H01M2004/027 ,  H01M2300/0088

Abstract: In a one-step method for preparing a lithiated silicon electrode, a suspension of a lithium precursor and a silicon precursor in a carrier liquid is plasma sprayed without a carrier gas. The carrier liquid is water, alcohol, ethylene glycol, or mixtures thereof. The lithium precursor is selected from the group consisting of a lithium phosphate, a lithium nitrate, a lithium sulfate, a lithium carbonate, and combinations thereof. The suspension excludes an active carbon material and a binder.

公开(公告)号：US20150349307A1

公开(公告)日：2015-12-03

申请号：US14721683

申请日：2015-05-26

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Gayatri Vyas Dadheech ,  Mei Cai ,  Li Yang

IPC: H01M2/14 ,  H01M10/052 ,  H01M10/0525 ,  H01M4/04 ,  H01M4/139

CPC classification number: H01M2/145 ,  H01M4/0402 ,  H01M4/0409 ,  H01M4/0419 ,  H01M4/139 ,  H01M4/366 ,  H01M10/052

Abstract: In an example of a method for preparing a coated lithium battery component, the lithium battery component is selected from the group consisting of a porous membrane, a positive electrode, and a negative electrode. The lithium battery component is coated with a precursor. The precursor includes a mixture of an electrolyte solvent, a lithium compound, and a monomer. Coating the lithium battery component forms a precursor coating on the lithium battery component. The precursor coating on the lithium battery component is exposed to a plasma jet, which causes the polymerization of the precursor to form a polymer coating on the lithium battery component.

Abstract translation: 在制备涂覆锂电池组件的方法的实例中，锂电池组件选自多孔膜，正极和负极。 锂电池组件涂覆有前体。 前体包括电解质溶剂，锂化合物和单体的混合物。 涂覆锂电池组件在锂电池组件上形成前体涂层。 锂电池组件上的前体涂层暴露于等离子体射流，这导致前体的聚合在锂电池组件上形成聚合物涂层。

公开(公告)号：US20150056387A1

公开(公告)日：2015-02-26

申请号：US14462899

申请日：2014-08-19

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Gayatri Vyas Dadheech ,  Mei Cai ,  Li Yang

IPC: H01M4/04 ,  C23C14/28 ,  H01M4/1391 ,  C23C14/08 ,  H01M4/1393 ,  C23C14/32 ,  C23C14/06

CPC classification number: H01M4/0423 ,  C23C14/0605 ,  C23C14/08 ,  C23C14/28 ,  H01M2/162 ,  H01M2/1686 ,  H01M4/1391 ,  H01M4/1397 ,  H01M4/366 ,  H01M4/505 ,  H01M4/5815 ,  H01M2004/028

Abstract: In an example of a method for coating a lithium battery component, the lithium battery component is provided. The lithium battery component is selected from the group consisting of an uncoated or untreated porous polymer membrane or an uncoated or untreated electrode including a lithium and manganese based active material. A laser arc plasma deposition process, a cathodic arc deposition process, or a pulsed laser deposition process is used to deposit a carbon nanocomposite structure, a metal oxide nanocomposite structure, or a mixed carbon and metal oxide nanocomposite structure i) on a surface of the lithium battery component, or ii) in pores of the lithium battery component, or iii) combinations of i and ii.

Abstract translation: 在锂电池部件的涂布方法的一例中，提供锂电池部件。 锂电池组件选自未涂覆或未处理的多孔聚合物膜或包括基于锂和锰的活性材料的未涂覆或未处理的电极。 使用激光电弧等离子体沉积工艺，阴极电弧沉积工艺或脉冲激光沉积工艺将碳纳米复合结构，金属氧化物纳米复合结构或混合碳和金属氧化物纳米复合结构i）沉积在 锂电池组件，或ii）在锂电池组件的孔中，或iii）i和ii的组合。