公开(公告)号：US20170162859A1

公开(公告)日：2017-06-08

申请号：US15115870

申请日：2015-02-09

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Li Yang ,  Qiangfeng Xiao ,  Mei Cai ,  Meng Jiang ,  Xingcheng Xiao

IPC: H01M4/04 ,  H01M10/0568 ,  H01M10/0525 ,  H01M10/0569 ,  H01M4/38

CPC classification number: H01M4/0445 ,  H01M4/0461 ,  H01M4/134 ,  H01M4/1395 ,  H01M4/38 ,  H01M4/386 ,  H01M10/052 ,  H01M10/0525 ,  H01M10/0567 ,  H01M10/0568 ,  H01M10/0569 ,  H01M2300/0025 ,  H01M2300/0034

Abstract: In an example of a method for enhancing the performance of a silicon-based negative electrode, the silicon-based negative electrode is pre-lithiated in an electrolyte including a lithium salt dissolved in a solvent mixture of dimethoxyethane (DME) and fluoroethylene carbonate (FEC). The DME and FEC are present in a volume to volume ratio ranging from 10 to 1 to 1 to 10. The pre-lithiation forms a stable solid electrolyte interface layer on an exposed surface of the negative electrode.

公开(公告)号：US09437871B2

公开(公告)日：2016-09-06

申请号：US14173512

申请日：2014-02-05

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Weidong Zhou ,  Xingcheng Xiao ,  Mei Cai

IPC: H01M4/76 ,  H01M4/36 ,  H01M4/58 ,  H01M4/02 ,  H01M4/04 ,  H01M4/1397 ,  H01M4/62 ,  H01M10/0525

CPC classification number: H01M4/366 ,  H01M4/0471 ,  H01M4/1397 ,  H01M4/581 ,  H01M4/625 ,  H01M4/76 ,  H01M10/0525 ,  H01M2004/021 ,  H01M2004/027

Abstract: A sulfur based active material has a core-shell structure including a hollow core and a porous carbon shell surrounding the hollow core. Sulfur is present in a portion of the hollow core. A polymer shell coating is formed on the porous carbon shell. The polymer shell coating includes nitrogen atoms that bond to carbon atoms of the porous carbon shell so that the porous carbon shell is a nitrogen-confused porous carbon shell.

Abstract translation: 硫基活性材料具有核 - 壳结构，其包括中空芯和围绕中空芯的多孔碳壳。 硫存在于中空芯的一部分中。 在多孔碳壳上形成聚合物壳涂层。 聚合物壳涂层包括与多孔碳壳的碳原子键合的氮原子，使得多孔碳壳是氮混合多孔碳壳。

公开(公告)号：US20150280219A1

公开(公告)日：2015-10-01

申请号：US14227289

申请日：2014-03-27

Applicant: GM Global Technology Operations LLC

Inventor： Xingcheng Xiao ,  Mei Cai

IPC: H01M4/36 ,  H01M4/1395 ,  H01M4/04

CPC classification number: H01M4/366 ,  H01M4/0404 ,  H01M4/1395 ,  H01M4/386 ,  H01M4/387 ,  H01M4/46 ,  H01M4/625 ,  Y02E60/122 ,  Y02P70/54

Abstract: In an example of a method for making a silicon-based active electrode material, a silicon active material precursor is introduced into a carrier gas. Another active material precursor is introduced into the carrier gas prior to, simultaneously with or subsequent to the silicon active material precursor. The other active material precursor is selected from a tin active material precursor, an aluminum active material precursor, a graphene active material precursor, and combinations thereof. The carrier gas containing the precursors is exposed to plasma vaporization, and a material is formed. The material includes i) an alloy of phase separated silicon and tin and/or aluminum, or ii) a graphene layer having silicon nanoparticles and tin nanoparticles, aluminum nanoparticles, or combinations of tin and aluminum nanoparticles deposited on a surface thereof, or iii) a graphene layer having an alloy of phase separated silicon and tin, aluminum, or tin and aluminum deposited on a surface thereof.

Abstract translation: 在制造硅基有源电极材料的方法的实例中，将硅活性材料前体引入载气中。 在硅活性材料前体之前，同时或之后将另一种活性材料前体引入载气中。 其它活性材料前体选自锡活性材料前体，铝活性材料前体，石墨烯活性材料前体及其组合。 含有前体的载气暴露于等离子体气化，形成材料。 该材料包括i）相分离硅和锡和/或铝的合金，或ii）具有硅纳米颗粒和锡纳米颗粒，铝纳米颗粒或沉积在其表面上的锡和铝纳米颗粒的组合的石墨烯层，或iii） 石墨烯层具有相分离的硅合金和沉积在其表面上的锡，铝或锡和铝。

公开(公告)号：US20150246816A1

公开(公告)日：2015-09-03

申请号：US14194089

申请日：2014-02-28

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Zhongyi Liu ,  Qiangfeng Xiao ,  Xingcheng Xiao ,  Michael K. Carpenter ,  Mei Cai

IPC: C01B31/04 ,  H01M4/04

CPC classification number: C01B31/04 ,  C01B31/02 ,  C01B32/05 ,  H01M4/0471 ,  H01M4/13 ,  H01M4/362 ,  H01M4/38 ,  H01M4/387 ,  H01M4/483 ,  H01M4/625 ,  H01M10/052 ,  H01M2004/021

Abstract: In an example of a method for making a hollow carbon material, a carbon black particle is obtained. The carbon black particle has a concentric crystallite structure with an at least partially amorphous carbon core and a graphitic carbon shell surrounding the at least partially amorphous carbon core. The carbon black particle is exposed to any of a heat treatment, a chemical treatment, or an electrochemical treatment which removes the at least partially amorphous carbon core to form the hollow carbon material.

Abstract translation: 在制造中空碳材料的方法的实例中，获得炭黑颗粒。 炭黑颗粒具有至少部分无定形碳芯的同心微晶结构和围绕至少部分无定形碳芯的石墨碳壳。 炭黑颗粒暴露于除去至少部分无定形碳芯以形成中空碳材料的任何热处理，化学处理或电化学处理。

公开(公告)号：US09005811B2

公开(公告)日：2015-04-14

申请号：US14105241

申请日：2013-12-13

Applicant: GM Global Technology Operations LLC

Inventor： Xingcheng Xiao ,  Anil K. Sachdev ,  Mark W. Verbrugge ,  Ping Liu ,  John S. Wang

IPC: H01M4/13 ,  H01M4/36 ,  H01M4/04 ,  H01M4/134 ,  H01M4/1395 ,  H01M4/38 ,  H01M10/052 ,  B82Y30/00 ,  H01B1/04 ,  H01B1/08

CPC classification number: H01M4/364 ,  B82Y30/00 ,  H01B1/04 ,  H01B1/08 ,  H01M4/0423 ,  H01M4/0426 ,  H01M4/0483 ,  H01M4/134 ,  H01M4/1395 ,  H01M4/386 ,  H01M4/387 ,  H01M10/052 ,  Y02E60/122

Abstract: A composite of silicon and tin is prepared as a negative electrode composition with increased lithium insertion capacity and durability for use with a metal current collector in cells of a lithium-ion battery or a lithium-sulfur battery. This negative electrode material is formed such that the silicon is present as a distinct amorphous phase in a matrix phase of crystalline tin. While the tin phase provides electron conductivity, both phases accommodate the insertion and extraction of lithium in the operation of the cell and both phases interact in minimizing mechanical damage to the material as the cell experiences repeated charge and discharge cycles. In general, roughly equal atomic proportions of the tin and silicon are used in forming the phase separated composite electrode material.

Abstract translation: 制备硅和锡的复合物作为具有增加的锂插入能力和耐久性的负极组合物，其与锂离子电池或锂硫电池的电池中的金属集流体一起使用。 这种负极材料形成为使得硅在结晶锡的基质相中作为不同的非晶相存在。 当锡相提供电子传导性时，两相在电池操作中容纳锂的插入和提取，并且当电池经历重复充电和放电循环时，两相相互作用以最小化对材料的机械损伤。 通常，在形成相分离的复合电极材料中使用大致相等的锡和硅的原子比例。

公开(公告)号：US20140272558A1

公开(公告)日：2014-09-18

申请号：US13826168

申请日：2013-03-14

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Xingcheng Xiao ,  Mei Cai ,  Li Yang ,  Meng Jiang

IPC: H01M4/139 ,  H01M10/28 ,  H01M4/13

CPC classification number: H01M10/28 ,  H01M4/131 ,  H01M4/134 ,  H01M4/1395 ,  H01M4/366 ,  H01M4/382 ,  H01M4/62 ,  H01M4/661 ,  H01M4/74 ,  H01M4/80 ,  H01M4/808 ,  H01M2220/20

Abstract: An electrode for a lithium-based secondary electrochemical device includes a current collector. The current collector includes a substrate having a surface defining a plurality of pores therein, and a lithium powder disposed within each of the plurality of pores. In addition, the electrode includes a cured film disposed on the current collector and formed from an electrically-conductive material. A lithium-based secondary electrochemical device including the electrode, and a method of forming the electrode are also disclosed.

Abstract translation: 锂二次电化学装置用电极包括集电体。 集电体包括具有在其中限定多个孔的表面的基板和设置在多个孔内的每个孔内的锂粉末。 此外，电极包括设置在集电器上并由导电材料形成的固化膜。 还公开了一种包括该电极的锂基二次电化学装置及其形成方法。

公开(公告)号：US20140127573A1

公开(公告)日：2014-05-08

申请号：US14151868

申请日：2014-01-10

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Xingcheng Xiao

IPC: H01M4/36

CPC classification number: H01M4/0426 ,  B82Y30/00 ,  C23C14/16 ,  C23C14/5806 ,  H01B1/02 ,  H01B1/023 ,  H01B1/026 ,  H01B1/04 ,  H01B1/08 ,  H01M4/0483 ,  H01M4/134 ,  H01M4/1395 ,  H01M4/386 ,  H01M4/387 ,  Y02E60/122

Abstract: A particulate composite of silicon, tin, and aluminum (or other suitable metal) is prepared as a negative electrode composition with increased lithium insertion capacity and durability for use with a metal current collector in cells of a lithium-ion battery or a lithium-sulfur battery. This electrode material is formed such that the silicon is present as a distinct amorphous phase in separate matrix phases of crystalline tin and crystalline aluminum. While the distinct tin and aluminum phases provide electron conductivity, each phase accommodates the insertion and extraction of lithium in the operation of the cell and all phases interact in minimizing mechanical damage to the material as the cell experiences repeated charge and discharge cycles. Other suitable metals for use in the composite with silicon and tin include copper and titanium.

Abstract translation: 制备硅，锡和铝（或其它合适的金属）的颗粒复合物作为具有增加的锂插入能力和耐久性的负极组合物，与锂离子电池或锂硫的电池中的金属集电体一起使用 电池。 这种电极材料被形成为使得硅在结晶锡和结晶铝的分开的基质相中作为不同的非晶相存在。 尽管不同的锡和铝相提供电子传导性，但是在电池的操作中，各相适应锂的插入和提取，并且当电池经历重复充电和放电循环时，所有相都相互作用以最小化对材料的机械损伤。 用于与硅和锡的复合材料中的其它合适的金属包括铜和钛。

公开(公告)号：US20250132348A1

公开(公告)日：2025-04-24

申请号：US18490203

申请日：2023-10-19

Applicant: GM Global Technology Operations LLC

Inventor： Wai Ping Gloria Tam ,  Xingcheng Xiao ,  Tsz Yuet Matthew Chow

IPC: H01M4/62 ,  H01M4/02 ,  H01M4/04 ,  H01M4/36 ,  H01M4/38

Abstract: A method of forming a lithium ion battery, a lithium ion battery anode, and a lithium ion battery for a vehicle. The method includes exposing a first surface of a lithium layer to carbon dioxide gas and forming a lithium carbonate layer on the first surface of the lithium layer. The method further includes depositing a fluoropolymer layer on a second surface of the lithium carbonate layer to provide a lithium anode. The battery includes one or more battery cells including the anode for the lithium ion battery. The anode includes a lithium layer including a first surface, and a hybrid coating layer disposed on the first surface, wherein the hybrid coating layer includes a plurality of lithium fluoride domains and a plurality of lithium carbonate domains within a carbonaceous matrix.

公开(公告)号：US12095059B2

公开(公告)日：2024-09-17

申请号：US17482236

申请日：2021-09-22

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Xingcheng Xiao ,  Yangbing Zeng ,  Mei Cai

IPC: H01M10/613 ,  H01M10/653 ,  H01M10/6566 ,  H01M50/119 ,  H01M10/625

CPC classification number: H01M10/613 ,  H01M10/653 ,  H01M10/6566 ,  H01M50/119 ,  H01M10/625

Abstract: A thermal barrier component for an electrochemical cell according to various aspects of the present disclosure includes a functional material. The functional material includes at least one of a hydrate of a metal carbonate and a hydrate of a metal phosphate. The functional material is configured to release water vapor at a first temperature of greater than or equal to about 100° C. and decompose to release a gaseous fire retardant at a second temperature of greater than or equal to about 300° C. Another thermal barrier component according to various aspects of the present disclosure includes a hydrate and a fire retardant. The hydrate is configured to release water in an amount greater than or equal to about 1 kg at a first temperature of greater than or equal to about 100° C. The fire retardant is configured to decompose at a second temperature of greater than or equal to about 300° C.

公开(公告)号：US20240250234A1

公开(公告)日：2024-07-25

申请号：US18100911

申请日：2023-01-24

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Caleb Reese ,  Sayed Youssef Sayed Nagy ,  Joel G. Toner ,  Jeffrey David Cain ,  Xingcheng Xiao

IPC: H01M4/04 ,  H01M4/13 ,  H01M4/38

CPC classification number: H01M4/0435 ,  H01M4/0407 ,  H01M4/13 ,  H01M4/382

Abstract: A pressing machine includes pressing devices, actuators and a control module. At least one of the pressing devices includes a surface having a fluoropolymer material. At least one of the actuators is configured to adjust pressure of the pressing devices on one or more lithium foils, such that the surface presses against one of the one or more lithium foils to form a protective layer. The control module is configured to control the at least one of the actuators to adjust a parameter to control at least one of thickness of the protective layer and fluoride content of the protective layer.