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    SURFACE COATING METHOD AND A METHOD FOR REDUCING IRREVERSIBLE CAPACITY LOSS OF A LITHIUM RICH TRANSITIONAL OXIDE ELECTRODE
    22.
    发明申请
    SURFACE COATING METHOD AND A METHOD FOR REDUCING IRREVERSIBLE CAPACITY LOSS OF A LITHIUM RICH TRANSITIONAL OXIDE ELECTRODE 有权
    表面涂层方法和减少锂离子电池的不可逆容量损失的方法

    公开(公告)号：US20140255603A1

    公开(公告)日：2014-09-11

    申请号：US13785783

    申请日：2013-03-05

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Qiangfeng Xiao ,  Mei Cai

    IPC: H01M4/04

    CPC classification number: H01M4/0471 ,  H01M4/1391 ,  H01M4/366 ,  Y02E60/122

    Abstract: A surface coating method and a method for reducing irreversible capacity loss of a lithium rich transitional oxide electrode are disclosed herein. In an example of the surface coating method, a dispersion of a lithium rich transitional oxide powder and an oxide precursor or a phosphate precursor in a liquid is formed. The liquid is evaporated. The forming and evaporating steps are carried out in the absence of air to prevent precipitation of the oxide precursor or the phosphate precursor. Hydrolyzation of the oxide precursor or the phosphate precursor is controlled under predetermined conditions, and an intermediate product is formed. The intermediate product is annealed to form an oxide coated lithium rich transitional oxide powder or the phosphate coated lithium rich transitional oxide powder.

    Abstract translation: 本文公开了一种降低富锂过渡氧化物电极的不可逆容量损失的表面涂覆方法和方法。 在表面涂布方法的一个实例中，形成富锂的过渡氧化物粉末和氧化物前体或磷酸盐前体在液体中的分散体。 液体蒸发。 成型和蒸发步骤在不存在空气的情况下进行，以防止氧化物前体或磷酸盐前体沉淀。 在预定条件下控制氧化物前体或磷酸盐前体的水解，形成中间产物。 将中间产物退火以形成氧化物涂覆的富锂过渡氧化物粉末或磷酸盐包覆的富锂过渡氧化物粉末。

    Methods and vehicles for health monitoring vehicle substrates and coatings
    24.
    发明授权
    Methods and vehicles for health monitoring vehicle substrates and coatings 有权

    公开(公告)号：US10580231B2

    公开(公告)日：2020-03-03

    申请号：US15995245

    申请日：2018-06-01

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Wen-Chiao Lin ,  Jingyan Wan ,  Jian Yao ,  Neeraj S. Shidore ,  Qiangfeng Xiao ,  Ming Yang ,  Paul E. Krajewski

    IPC: G07C5/08 ,  G01B7/16 ,  G01L5/00

    Abstract: Vehicles and methods are provided for monitoring the health of a substrate and a protective coating disposed on the substrate. A vehicle includes a substrate, a protective coating, a coating deformation sensor, and a controller. The protective coating is disposed overtop the substrate. The coating deformation sensor is operatively coupled with the protective coating and configured to measure a deformation value of the protective coating. The controller is configured to: determine a deformation recovery rate of the protective coating based on the deformation value; determine whether the deformation recovery rate corresponds with an expected recovery rate of the protective coating; and indicate that the protective coating may be impaired in response to determining that the deformation recovery rate does not correspond with the expected recovery rate.

    Making nanocrystalline mesoporous spherical particles
    25.
    发明授权
    Making nanocrystalline mesoporous spherical particles 有权
    制备纳米晶介孔球形颗粒

    公开(公告)号：US09573194B2

    公开(公告)日：2017-02-21

    申请号：US14466093

    申请日：2014-08-22

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC ,  THE REGENTS OF THE UNIVERSITY OF CALIFORNIA

    Inventor： Qiangfeng Xiao ,  Mei Cai ,  Hiesang Sohn ,  Yunfeng Lu

    IPC: B22F9/30 ,  B22F1/00 ,  C22C1/10 ,  B29B9/00

    CPC classification number: B22F9/30 ,  B22F1/0048 ,  B22F2302/10 ,  B22F2302/25 ,  B22F2304/00 ,  B22F2998/10 ,  B29B9/00 ,  C22C1/1026

    Abstract: Spherical particles of one or more elemental metals and elemental carbon are prepared from a precursor in the form of a metal oleate. The metal oleate precursor is dispersed in a liquid vehicle and aerosol droplets of the dispersed precursor are formed in a stream of an inert gas. The aerosol droplets are heated in the stream to decompose the oleate ligand portion of the precursor and form spherical particles that have a mesoporous nanocrystalline structure. The open mesopores of the spherical particles provide a high surface area for contact with fluids in many applications. For example, the mesopores can be infiltrated with a hydrogen absorbing material, such as magnesium hydride, in order to increase the hydrogen storage capacity of the particles.

    Abstract translation: 由金属油酸盐形式的前体制备一种或多种元素金属和元素碳的球形颗粒。 金属油酸酯前体分散在液体载体中，并且分散的前体的气溶胶小滴以惰性气体流形成。 气溶胶液滴在流中被加热以分解前体的油酸酯配体部分并形成具有介孔纳米晶体结构的球形颗粒。 在许多应用中，球形颗粒的开放的中孔提供了与流体接触的高表面积。 例如，为了增加颗粒的储氢能力，可以用吸氢材料如氢化镁渗透介孔。

    METHODS FOR MAKING A SOLID ELECTROLYTE INTERFACE LAYER ON A SURFACE OF AN ELECTRODE
    28.
    发明申请
    METHODS FOR MAKING A SOLID ELECTROLYTE INTERFACE LAYER ON A SURFACE OF AN ELECTRODE 有权
    在电极表面上制造固体电解质界面层的方法

    公开(公告)号：US20160141598A1

    公开(公告)日：2016-05-19

    申请号：US14932361

    申请日：2015-11-04

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Fang Dai ,  Mei Cai ,  Qiangfeng Xiao ,  Li Yang

    IPC: H01M4/04 ,  H01M10/0567 ,  H01M10/052 ,  C25D9/02

    CPC classification number: H01M4/0452 ,  C25D9/02 ,  H01M4/0447 ,  H01M4/139 ,  H01M4/362 ,  H01M4/382 ,  H01M10/049 ,  H01M10/052 ,  H01M10/0567

    Abstract: In an example of the method for making a solid electrolyte interface (SEI) layer on a surface of an electrode, the electrode is exposed to an electrolyte solution in an electrochemical cell. The electrolyte solution includes either i) an organo-polysulfide additive having a formula RSnR′ (n>2), wherein R and R′ are independently selected from a methyl group, an unsaturated chain, a 3-(Trimethoxysilyl)-1-propyl group, or a 4-nitrophenyl group, or ii) a fluorinated organo-polysulfide additive having a formula RSnR′ (n>2), wherein R and R′ can be the same or different, and wherein R and R′ each have a general formula of CxHyF(2x−y+1), where x is at least 1 and y ranges from 0 to 2x. A voltage or a load is applied to the electrochemical cell.

    Abstract translation: 在电极表面上制造固体电解质界面（SEI）层的方法的实例中，电极暴露于电化学电池中的电解质溶液。 电解质溶液包括i）具有式RSnR'（n> 2）的有机多硫化物添加剂，其中R和R'独立地选自甲基，不饱和链，3-（三甲氧基甲硅烷基）-1-丙基 基团或4-硝基苯基，或ii）具有式RS n R'（n> 2）的氟化有机多硫化物添加剂，其中R和R'可以相同或不同，并且其中R和R'各自具有 C x H y F（2x-y + 1）的通式，其中x至少为1，y的范围为0至2。 向电化学电池施加电压或负载。

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