公开(公告)号：US20140106220A1

公开(公告)日：2014-04-17

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: H01M4/36

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原子比例。

公开(公告)号：US10593988B2

公开(公告)日：2020-03-17

申请号：US14724703

申请日：2015-05-28

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Xingcheng Xiao ,  John S. Wang

IPC: H01M10/0525 ,  H01M2/16 ,  C25D7/06 ,  H01M10/058 ,  H01M10/052 ,  H01M4/139 ,  H01M10/04 ,  H01M4/04

Abstract: An electrochemical cell is formed. The cell includes a non-lithium negative electrode in contact with a lithium ion permeable negative electrode current collector, and a positive electrode disposed in contact with a lithium ion permeable positive electrode current collector. The non-lithium negative electrode and the positive electrode are lithium ion permeable. The cell also has a lithium source electrode including lithium ions. A respective microporous polymer separator is disposed between the lithium source electrode and each of the negative and positive electrodes; or a first separator is disposed between the lithium source electrode and one of the negative and positive electrodes, and a second separator is disposed between the negative and positive electrodes. An electrolyte is introduced into the electrochemical cell. A voltage potential is applied across the electrochemical cell to pre-lithiate any of the non-lithium negative electrode and positive electrode with lithium ions from the lithium source electrode.

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：US09531004B2

公开(公告)日：2016-12-27

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 ,  H01M4/485 ,  H01M4/48 ,  H01M4/04 ,  H01M4/58 ,  H01M4/62 ,  H01M10/0525 ,  H01M4/583

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。

公开(公告)号：US20150263379A1

公开(公告)日：2015-09-17

申请号：US14724703

申请日：2015-05-28

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Xingcheng Xiao ,  John S. Wang

IPC: H01M10/0525 ,  H01M4/131 ,  H01M4/134 ,  H01M4/136 ,  H01M4/587 ,  C25D7/06 ,  H01M4/38 ,  H01M4/485 ,  H01M4/505 ,  H01M4/525 ,  H01M4/58 ,  H01M2/16 ,  H01M4/46

Abstract: An electrochemical cell is formed. The cell includes a non-lithium negative electrode in contact with a lithium ion permeable negative electrode current collector, and a positive electrode disposed in contact with a lithium ion permeable positive electrode current collector. The non-lithium negative electrode and the positive electrode are lithium ion permeable. The cell also has a lithium source electrode including lithium ions. A respective microporous polymer separator is disposed between the lithium source electrode and each of the negative and positive electrodes; or a first separator is disposed between the lithium source electrode and one of the negative and positive electrodes, and a second separator is disposed between the negative and positive electrodes. An electrolyte is introduced into the electrochemical cell. A voltage potential is applied across the electrochemical cell to pre-lithiate any of the non-lithium negative electrode and positive electrode with lithium ions from the lithium source electrode.

Abstract translation: 形成电化学电池。 电池包括与锂离子透过性负极集电体接触的非锂负极和与锂离子透过性正极集电体接触的正极。 非锂负极和正极是锂离子可渗透的。 该电池还具有包含锂离子的锂源电极。 各个微孔聚合物隔板设置在锂源电极和负极和正电极之间; 或者在锂源极和负极和正极中的一个之间设置第一隔板，在负极和正极之间设置第二隔板。 将电解质引入到电化学电池中。 在电化学电池上施加电压电位，以从锂源电极中锂离子预锂化任何非锂负电极和正电极。