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    SOLVENT-FREE DRY POWDER PROCESS TO INCORPORATE CERAMIC PARTICLES INTO ELECTROCHEMICAL CELL COMPONENTS
    21.
    发明申请
    SOLVENT-FREE DRY POWDER PROCESS TO INCORPORATE CERAMIC PARTICLES INTO ELECTROCHEMICAL CELL COMPONENTS 有权

    公开(公告)号：US20210344004A1

    公开(公告)日：2021-11-04

    申请号：US16863655

    申请日：2020-04-30

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Jin LIU ,  Xingcheng XIAO ,  Meinan HE ,  Mei CAI

    IPC: H01M4/36 ,  H01M4/62 ,  H01M10/0525 ,  H01M4/505 ,  H01M4/525

    Abstract: Solvent-free methods of making a component, like an electrode, for an electrochemical cell are provided. A particle mixture is processed in a dry-coating device having a rotatable vessel defining a cavity with a rotor. The rotatable vessel is rotated at a first speed in a first direction and the rotor at a second speed in a second opposite direction. The particle mixture includes first inorganic particles (e.g., electroactive particles), second inorganic particles (e.g., ceramic HF scavenging particles), and third particles (e.g., electrically conductive carbon-containing particles). The dry coating creates coated particles each having a surface coating (including second inorganic particles and third particles) disposed over a core region (the first inorganic particle). The coated particles are mixed with polymeric particles in a planetary and centrifugal mixer that rotates about a first axis and revolves about a second axis. The polymeric particles surround each of the plurality of coated particles.

    METHODS OF PRE-LITHIATING ELECTRODES
    24.
    发明申请
    METHODS OF PRE-LITHIATING ELECTRODES 有权

    公开(公告)号：US20210066704A1

    公开(公告)日：2021-03-04

    申请号：US16559132

    申请日：2019-09-03

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Mark W. VERBRUGGE ,  Xingcheng XIAO ,  Jiagang XU

    IPC: H01M4/131 ,  H01M4/133 ,  H01M4/134 ,  H01M4/136 ,  H01M4/36 ,  H01M4/38 ,  H01M10/052

    Abstract: The present disclosure provides methods of compensation for capacity loss resulting from cycle-induced lithium consumption in an electrochemical cell including at least one electrode. Such methods may include adding a lithiation additive to the at least one electrode so as to create a lithium source. The lithium source compensates for cycle-induced lithiation loss such that the electrochemical cell having the lithiation additive experiences total capacity losses of less than or equal to about 5% of an initial capacity prior to cycling of lithium. The lithiation additive includes a lithium silicate represented by the formula LiuHr, where Hr=Liy-uSiOz and where 0≤y≤3.75 and 0≤z≤2 and u is a useable portion of y, 0≤u≤y. The lithium source may include z/4 Li4SiO4 and LimSi, where 0≤m≤4.4.

    MULTIFUNCTIONAL HYBRID COATINGS FOR ELECTRODES MADE BY ATOMIC LAYER DEPOSITION TECHNIQUES
    26.
    发明申请
    MULTIFUNCTIONAL HYBRID COATINGS FOR ELECTRODES MADE BY ATOMIC LAYER DEPOSITION TECHNIQUES 有权
    用于原子层沉积技术的电极多功能混合涂料

    公开(公告)号：US20150180023A1

    公开(公告)日：2015-06-25

    申请号：US14138267

    申请日：2013-12-23

    Applicant: GM Global Technology Operations LLC

    Inventor： Xingcheng XIAO ,  Mark W. VERBRUGGE ,  John S. WANG

    IPC: H01M4/36 ,  H01M4/04 ,  H01M4/583 ,  H01M4/48 ,  H01M4/38 ,  H01M4/485

    CPC classification number: H01M4/366 ,  H01M4/0402 ,  H01M4/0423 ,  H01M4/0428 ,  H01M4/48 ,  H01M4/485 ,  H01M4/582 ,  H01M4/583 ,  H01M4/622 ,  H01M4/625 ,  H01M10/0525 ,  Y02E60/122 ,  Y02P70/54 ,  Y02T10/7011

    Abstract: An electroactive material for use in an electrochemical cell, like a lithium ion battery, is provided. The electroactive material comprises a multifunctional hybrid protective coating system formed over an electroactive material. The coating system includes a first oxide-based coating disposed on one or more surfaces of the electroactive material, followed by a second coating deposited via a non-aqueous process. The second coating may be a fluoride-based, nitride-based, or carbide-based coating. The first and second coatings may be applied by atomic layer deposition (ALD) to form conformal ultrathin layers over the electroactive materials. Such a multifunctional hybrid protective coating system can suppress formation of gases within the electrochemical cell and also minimize formation of solid electrolyte interface (SEI) layers on the electrode to improve battery performance. Methods for making such materials and using such materials in electrochemical cells are likewise provided.

    Abstract translation: 提供了用于电化学电池中的电活性材料，如锂离子电池。 电活性材料包括在电活性材料上形成的多功能混合保护涂层系统。 涂层系统包括设置在电活性材料的一个或多个表面上的第一氧化物基涂层，随后是通过非水性方法沉积的第二涂层。 第二涂层可以是氟化物基，氮化物基或碳化物基涂层。 第一和第二涂层可以通过原子层沉积（ALD）来施加，以在电活性材料上形成保形超薄层。 这种多功能混合保护涂层系统可以抑制电化学电池内的气体的形成，并且还使电极上的固体电解质界面（SEI）层的形成最小化以改善电池性能。 同样提供了制造这种材料并在电化学电池中使用这种材料的方法。

    COLUMNAR SILICON ANODE HAVING A CARBONACEOUS NETWORK AND METHODS OF FORMING THE SAME
    27.
    发明公开
    COLUMNAR SILICON ANODE HAVING A CARBONACEOUS NETWORK AND METHODS OF FORMING THE SAME 审中-公开

    公开(公告)号：US20240154095A1

    公开(公告)日：2024-05-09

    申请号：US18127444

    申请日：2023-03-28

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Zhe LI ,  Xingcheng XIAO ,  Qili SU ,  Yong LU

    IPC: H01M4/36 ,  H01M4/04 ,  H01M4/38 ,  H01M4/583 ,  H01M10/0525

    CPC classification number: H01M4/364 ,  H01M4/0404 ,  H01M4/0471 ,  H01M4/386 ,  H01M4/583 ,  H01M10/0525 ,  H01M2004/027

    Abstract: An electrochemical cell includes a first electrode that includes a first current collector and a first electroactive material layer disposed on or near the first current collector, a second electrode that includes a second current collector and a second electroactive material layer disposed on or near the second current collector, and a separating layer disposed between the first electroactive material layer and the second electroactive material layer. The second electroactive material layer includes a plurality of hierarchical silicon columns, each of the hierarchical silicon columns has a longest dimension perpendicular to a major axis of the second current collector. The second electroactive material layer also includes a carbonaceous network that at least partially fills interstices defined between hierarchical silicon columns of the plurality of hierarchical silicon columns. The carbonaceous network includes linked carbon atoms that define a plurality of pores.

    SOLID-STATE ELECTROLYTES AND METHODS OF FORMING THE SAME
    28.
    发明公开
    SOLID-STATE ELECTROLYTES AND METHODS OF FORMING THE SAME 审中-公开

    公开(公告)号：US20240079726A1

    公开(公告)日：2024-03-07

    申请号：US17939460

    申请日：2022-09-07

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Xingcheng XIAO ,  Robert D. SCHMIDT

    IPC: H01M50/449 ,  H01M10/0525 ,  H01M50/403 ,  H01M50/437

    CPC classification number: H01M50/449 ,  H01M10/0525 ,  H01M50/403 ,  H01M50/437

    Abstract: A solid-state electrolyte for an electrochemical cell that cycles lithium ions is provided. The solid-state electrolyte includes a sintered layer that includes a plurality of lithiated zeolite particles having pores and a lithium-containing material disposed in at least a portion of the pores of the lithiated zeolite particles. For example, each lithiated zeolite particle has a porosity greater than or equal to about 20 vol. % to less than or equal to about 80 vol. %, and the lithium-containing material occupies greater than or equal to about 20% to less than or equal to about 80% of a total porosity of each lithiated zeolite particle. In certain instances, the sintered layer further includes a superionic additive that is also disposed in a portion of the pores of the lithiated zeolite particles, such that the sintered layer has an ionic conductivity between about 1×10−5 S·cm−1 and about 1×10−1 S·cm−1.

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