公开(公告)号：US20190044134A1

公开(公告)日：2019-02-07

申请号：US15666170

申请日：2017-08-01

Applicant: GM Global Technology Operations LLC ,  The Regents of the University of California

Inventor： Fang Liu ,  Duo Xu ,  Yunfeng Lu ,  Qiangfeng Xiao ,  Mei Cai

IPC: H01M4/38 ,  H01M4/04 ,  H01M4/36

Abstract: A negative lithium-containing electrode for an electrochemical cell is provided, along with methods of making such a negative lithium-containing electrode. The method includes depositing a first precursor and a second precursor in a vapor deposition process onto one or more surface regions of a negative electrode material comprising lithium. The first precursor and the second precursor react to form an inorganic-organic composite surface coating on the one or more surface regions. The first precursor comprises an organic mercapto-containing silane and the second precursor comprises an inorganic silane.

公开(公告)号：US10128481B2

公开(公告)日：2018-11-13

申请号：US14617322

申请日：2015-02-09

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Qiangfeng Xiao ,  Anne M. Dailly ,  Li Yang ,  Zhongyi Liu ,  Mei Cai

IPC: H01M2/16 ,  H01M10/052 ,  H01M2/14

Abstract: A lithium-based battery separator includes a porous polymer membrane having opposed surfaces. A porous carbon coating is formed on one of the opposed surfaces of the porous polymer membrane. Polycations are incorporated in the porous carbon coating, in the porous polymer membrane, or in both the porous carbon coating and the porous polymer membrane.

公开(公告)号：US10084204B2

公开(公告)日：2018-09-25

申请号：US14803632

申请日：2015-07-20

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

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

IPC: H01M10/0567 ,  H01M10/0569 ,  H01M10/0568 ,  H01M10/052 ,  H01M4/38 ,  H01M4/58

CPC classification number: H01M10/0567 ,  H01M4/386 ,  H01M4/581 ,  H01M4/5815 ,  H01M10/052 ,  H01M10/0568 ,  H01M10/0569 ,  H01M2300/0028 ,  H01M2300/0037

Abstract: An example of an electrolyte solution includes a solvent, a lithium salt, a fluorinated ether, and an additive. The additive is selected from the group consisting of RSxR′, wherein x ranges from 3 to 18, and R—(SnSem)—R, wherein 2

公开(公告)号：US09859554B2

公开(公告)日：2018-01-02

申请号：US14323727

申请日：2014-07-03

Applicant: GM Global Technology Operations LLC

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

IPC: H01M4/04 ,  H01M4/36 ,  H01M4/62 ,  H01M4/1395 ,  H01M4/134 ,  H01M10/052 ,  H01M4/38 ,  H01M4/02

CPC classification number: H01M4/366 ,  H01M4/0402 ,  H01M4/0471 ,  H01M4/134 ,  H01M4/1395 ,  H01M4/386 ,  H01M4/622 ,  H01M4/625 ,  H01M4/628 ,  H01M10/052 ,  H01M2004/021 ,  Y02T10/7011

Abstract: A negative electrode material includes an active material. The active material includes a silicon core selected from the group consisting of Si, SiO2, SiOx (0

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：US20160172711A1

公开(公告)日：2016-06-16

申请号：US14617463

申请日：2015-02-09

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Li Yang ,  Mei Cai ,  Qiangfeng Xiao ,  Fang Dai ,  Mark W. Verbrugge

IPC: H01M10/0569 ,  H01M10/0567 ,  H01M4/134 ,  H01M10/0525

CPC classification number: H01M10/0569 ,  H01M4/134 ,  H01M4/386 ,  H01M10/052 ,  H01M10/0567 ,  H01M10/0568 ,  H01M2004/027 ,  H01M2300/0034 ,  H01M2300/0037

Abstract: An example electrolyte includes a solvent mixture, a lithium salt, a non-polymerizing solid electrolyte interface (SEI) precursor additive, and a solvent additive. The solvent mixture includes dimethyl carbonate (DMC) and fluoroethylene carbonate (FEC) present in a volume to volume ratio ranging from 20 to 1 to 1 to 20. The non-polymerizing SEI precursor additive is present in an amount ranging from greater than 0 wt % to about 10 wt % of a total wt % of the electrolyte, and the solvent additive is present in an amount ranging from greater than 0 wt % to about 10 wt % of the total wt % of the electrolyte.

Abstract translation: 示例性电解质包括溶剂混合物，锂盐，非聚合固体电解质界面（SEI）前体添加剂和溶剂添加剂。 溶剂混合物包括体积与体积比范围为20-1:1至20的碳酸二甲酯（DMC）和氟代碳酸亚乙酯（FEC）。非聚合SEI前体添加剂以大于0wt 至约10重量％的电解质的总重量％，并且溶剂添加剂以大于电解质总重量％的0重量％至约10重量％的量存在。

公开(公告)号：US20160149218A1

公开(公告)日：2016-05-26

申请号：US14555026

申请日：2014-11-26

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

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

IPC: H01M4/62 ,  H01M10/0568 ,  H01M2/14 ,  H01M10/0569 ,  H01M4/38 ,  H01M10/052

CPC classification number: H01M10/0569 ,  H01M4/364 ,  H01M4/38 ,  H01M4/5815 ,  H01M4/62 ,  H01M4/621 ,  H01M4/624 ,  H01M10/052 ,  Y02T10/7011

Abstract: A positive electrode includes a sulfur-based active material, a binder, a conductive filler, and porous, one-dimensional metal oxide nanorods. The one-dimensional metal oxide nanorods are mixed, as an additive, throughout the positive electrode with the sulfur-based active material, the binder, and the conductive filler. The positive electrode with the porous, one-dimensional metal oxide nanorods may be incorporated into any sulfur-based battery.

Abstract translation: 正极包括硫基活性材料，粘合剂，导电填料和多孔的一维金属氧化物纳米棒。 将一维金属氧化物纳米棒作为添加剂以整个正极与硫基活性材料，粘合剂和导电填料混合。 具有多孔一维金属氧化物纳米棒的正极可以并入任何硫基电池中。

公开(公告)号：US20160020491A1

公开(公告)日：2016-01-21

申请号：US14803632

申请日：2015-07-20

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

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

IPC: H01M10/0567 ,  H01M4/587 ,  H01M10/052 ,  H01M4/38 ,  H01M10/0569 ,  H01M10/0568

CPC classification number: H01M10/0567 ,  H01M4/386 ,  H01M4/581 ,  H01M4/5815 ,  H01M10/052 ,  H01M10/0568 ,  H01M10/0569 ,  H01M2300/0028 ,  H01M2300/0037

Abstract: An example of an electrolyte solution includes a solvent, a lithium salt, a fluorinated ether, and an additive. The additive is selected from the group consisting of RSxR′, wherein x ranges from 3 to 18, and R—(SnSem)—R, wherein 2

Abstract translation: 电解质溶液的实例包括溶剂，锂盐，氟化醚和添加剂。 添加剂选自RSxR'，其中x为3至18，R-（SnSem）-R为2

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：US09123939B2

公开(公告)日：2015-09-01

申请号：US13828755

申请日：2013-03-14

Applicant: GM Global Technology Operations LLC

Inventor： Qiangfeng Xiao ,  Mei Cai

IPC: H01M4/134 ,  H01M4/04 ,  H01M4/1395 ,  H01M4/38 ,  H01M4/62

CPC classification number: H01M4/134 ,  B01J13/20 ,  B01J13/203 ,  C01B33/023 ,  C01B33/18 ,  H01M4/049 ,  H01M4/1395 ,  H01M4/386 ,  H01M4/621 ,  H01M4/625 ,  H01M2004/027 ,  Y02E60/122

Abstract: Anodes including mesoporous hollow silicon particles are disclosed herein. A method for synthesizing the mesoporous hollow silicon particles is also disclosed herein. In one example of the method, a silicon dioxide sphere having a silicon dioxide solid core and a silicon dioxide mesoporous shell is formed. The silicon dioxide mesoporous shell is converted to a silicon mesoporous shell using magnesium vapor. The silicon dioxide solid core, any residual silicon dioxide, and any magnesium-containing by-products are removed to form the mesoporous, hollow silicon particle.

Abstract translation: 本文公开了包括介孔中空硅颗粒的阳极。 本文还公开了一种合成中孔硅颗粒的方法。 在该方法的一个实例中，形成具有二氧化硅固体核和二氧化硅介孔壳的二氧化硅球。 使用镁蒸气将二氧化硅介孔壳转化为硅介孔壳。 除去二氧化硅固体核，任何残余二氧化硅和任何含镁副产物以形成介孔中空硅颗粒。