Daniel Alan Alexander

US Patent:

20140079980, Mar 20, 2014

Filed:

Sep 18, 2013

Appl. No.:

14/030158

Inventors:

Xiaomin Zhang - Charlotte NC, US
Paul D. Vido - Rock Hill SC, US
Zhengming Zhang - Rock Hill SC, US
Lie Shi - Matthews NC, US
Daniel R. Alexander - Matthews NC, US
Jill V. Watson - Lake Wylie SC, US

Assignee:

CELGARD, LLC - CHARLOTTE NC

International Classification:

H01M 2/16
H01M 2/14

US Classification:

429144, 429254, 264138

Abstract:

In accordance with at least selected aspects, objects or embodiments, optimized, novel or improved membranes, battery separators, batteries, and/or systems and/or related methods of manufacture, use and/or optimization are provided. In accordance with at least selected embodiments, the present invention is related to novel or improved battery separators that prevent dendrite growth, prevent internal shorts due to dendrite growth, or both, batteries incorporating such separators, systems incorporating such batteries, and/or related methods of manufacture, use and/or optimization thereof. In accordance with at least certain embodiments, the present invention is related to novel or improved ultra thin or super thin membranes or battery separators, and/or lithium primary batteries, cells or packs incorporating such separators, and/or systems incorporating such batteries, cells or packs. In accordance with at least particular certain embodiments, the present invention is related to shutdown membranes or battery separators, and/or lithium primary batteries, cells or packs incorporating such separators, and/or systems incorporating such batteries, cells or packs.

US Patent:

20210408613, Dec 30, 2021

Filed:

Sep 7, 2021

Appl. No.:

17/468261

Inventors:

- Charlotte NC, US
Xiaomin Zhang - Charlotte NC, US
Paul D. Vido - Rock Hill SC, US
Zhengming Zhang - Rock Hill SC, US
Lie Shi - Matthews NC, US
Daniel R. Alexander - Matthews NC, US
Jill V. Watson - Lake Wylle SC, US

International Classification:

H01M 10/42
H01M 10/0525
H01M 50/403
H01M 50/409
H01M 50/411
H01M 50/449

Abstract:

In accordance with at least selected aspects, objects or embodiments, optimized, novel or improved membranes, battery separators, batteries, and/or systems and/or related methods of manufacture, use and/or optimization are provided. In accordance with at least selected embodiments, the present invention is related to novel or improved battery separators that prevent dendrite growth, prevent internal shorts due to dendrite growth, or both, batteries incorporating such separators, systems incorporating such batteries, and/or related methods of manufacture, use and/or optimization thereof. In accordance with at least certain embodiments, the present invention is related to novel or improved ultra thin or super thin membranes or battery separators, and/or lithium primary batteries, cells or packs incorporating such separators, and/or systems incorporating such batteries, cells or packs. In accordance with at least particular certain embodiments, the present invention is related to shutdown membranes or battery separators, and/or lithium primary batteries, cells or packs incorporating such separators, and/or systems incorporating such batteries, cells or packs.

US Patent:

20210143511, May 13, 2021

Filed:

Jan 4, 2019

Appl. No.:

16/964000

Inventors:

- Charlotte NC, US
Michael B. Lane - Charlotte NC, US
Insik Jeon - Ithaca NY, US
Edward Kruger - Charlotte NC, US
Xiang E. Yu - Indian Land SC, US
Ronnie E. Smith - Huntersville NC, US
Stefan Reinartz - Waxhaw NC, US
Junqing Ma - Charlotte NC, US
Daniel R. Alexander - Matthews NC, US

International Classification:

H01M 50/449
H01M 10/052
H01M 4/38
H01M 4/40
H01M 50/446
H01M 50/417
H01M 50/434

Abstract:

New and/or improved coatings, layers or treatments for porous substrates, including battery separators or separator membranes, and/or coated or treated porous substrates, including coated battery separators, and/or batteries or cells including such coatings or coated separators, and/or related methods including methods of manufacture and/or of use thereof are disclosed. Also, new or improved coatings for porous substrates, including battery separators, which comprise at least a matrix material or a polymeric binder, and heat-resistant particles with additional additives, materials or components, and/or to new or improved coated or treated porous substrates, including battery separators, where the coating comprises at least a matrix material or a polymeric binder, and heat-resistant particles with additional additives, materials or components are disclosed. Further, new or improved coatings for porous substrates, including battery separators, and new and/or improved coated porous substrates, including battery separators, new or improved coatings for porous substrates, including battery separators, which comprise at least (i) a matrix material or a polymeric binder, (ii) heat-resistant particles, and (iii) at least one component selected from the group consisting of a cross-linker, a low-temperature shutdown agent, an adhesion agent, and a thickener, and new and/or improved coated porous substrates, including battery separators, where the coating comprises at least (i) a matrix material or a polymeric binder, (ii) heat-resistant particles, and (iii) at least one component selected from the group consisting of a cross-linker, a low-temperature shutdown agent, an adhesion agent, a thickener, a friction-reducing agent, and a high-temperature shutdown agent are disclosed.

US Patent:

20210036293, Feb 4, 2021

Filed:

Sep 14, 2020

Appl. No.:

17/020347

Inventors:

- Charlotte NC, US
William John Mason - McConnells SC, US
Kang Karen Xiao - Mississauga, CA
Xiaomin Zhang - Charlotte NC, US
Barry J. Summey - Lake Wylie SC, US
Robert Moran - Concord NC, US
Jeffrey Gordon Poley - Indian Land SC, US
Brian R. Stepp - Scottsdale AZ, US
Changqing Wang Adams - Fort Mill SC, US
Daniel R. Alexander - Matthews NC, US
Shante P. Williams - Charlotte NC, US
Andrew Edward Voss - Rock Hill SC, US
Douglas George Robertson - Charlotte NC, US

International Classification:

H01M 2/16
H01M 2/14
H01M 2/18
H01M 10/42

Abstract:

Novel or improved microporous single or multilayer battery separator membranes, separators, batteries including such membranes or separators, methods of making such membranes, separators, and/or batteries, and/or methods of using such membranes, separators and/or batteries are provided. In accordance with at least certain embodiments, a multilayer dry process polyethylene/polypropylene/polyethylene microporous separator which is manufactured using the inventive process which includes machine direction stretching followed by transverse direction stretching and a subsequent calendering step as a means to reduce the thickness of the multilayer microporous membrane, to reduce the percent porosity of the multilayer microporous membrane in a controlled manner and/or to improve transverse direction tensile strength. In a very particular embodiment, the inventive process produces a thin multilayer microporous membrane that is easily coated with polymeric-ceramic coatings, has excellent mechanical strength properties due to its polypropylene layer or layers and a thermal shutdown function due to its polyethylene layer or layers. The ratio of the thickness of the polypropylene and polyethylene layers in the inventive multilayer microporous membrane can be tailored to balance mechanical strength and thermal shutdown properties.

US Patent:

20200277465, Sep 3, 2020

Filed:

Sep 12, 2018

Appl. No.:

16/645530

Inventors:

- Charlotte NC, US
Masaaki Okada - Charlotte NC, US
Stefan Reinartz - Waxhaw NC, US
Daniel R. Alexander - Matthews NC, US

International Classification:

C08J 9/42
H01M 8/0239
H01M 10/052
H01M 2/16

Abstract:

A novel or improved base film for impregnation, impregnated base film, product incorporating the impregnated base film, and/or related methods as shown, claimed or described herein.

US Patent:

20190334214, Oct 31, 2019

Filed:

Jul 8, 2019

Appl. No.:

16/504808

Inventors:

- Charlotte NC, US
Xiaomin Zhang - Charlotte NC, US
Paul D. Vido - Rock Hill SC, US
Zhengming Zhang - Rock Hill SC, US
Lie Shi - Matthews NC, US
Daniel R. Alexander - Matthews NC, US
Jill V. Watson - Lake Wylie SC, US

International Classification:

H01M 10/42
H01M 2/16
H01M 10/0525
H01M 2/14

Abstract:

In accordance with at least selected aspects, objects or embodiments, optimized, novel or improved membranes, battery separators, batteries, and/or systems and/or related methods of manufacture, use and/or optimization are provided. In accordance with at least selected embodiments, the present invention is related to novel or improved battery separators that prevent dendrite growth, prevent internal shorts due to dendrite growth, or both, batteries incorporating such separators, systems incorporating such batteries, and/or related methods of manufacture, use and/or optimization thereof. In accordance with at least certain embodiments, the present invention is related to novel or improved ultra thin or super thin membranes or battery separators, and/or lithium primary batteries, cells or packs incorporating such separators, and/or systems incorporating such batteries, cells or packs. In accordance with at least particular certain embodiments, the present invention is related to shutdown membranes or battery separators, and/or lithium primary batteries, cells or packs incorporating such separators, and/or systems incorporating such batteries, cells or packs.

US Patent:

20180366706, Dec 20, 2018

Filed:

Jul 23, 2018

Appl. No.:

16/041920

Inventors:

- Charlotte NC, US
Daniel R. Alexander - Matthews NC, US

International Classification:

H01M 2/16
H01M 10/12
H01M 10/08
H01M 2/14
H01M 2/18

Abstract:

Disclosed herein are soluble content absorbent glass mats or AGM separators for VRLA, AGM, or VRLA AGM batteries. Such glass mats may be prepared from insoluble glass fibers blended with soluble content materials. Upon exposure to a suitable solvent, the dissolving or solvating of the soluble content produces voids within the glass mat. The voids enhance the absorption of the solvent within the glass mat. The soluble content may be acid-soluble glass fibers or microfibers.

US Patent:

20170222281, Aug 3, 2017

Filed:

Apr 20, 2017

Appl. No.:

15/492062

Inventors:

- Charlotte NC, US
Xiaomin Zhang - Charlotte NC, US
Paul D. Vido - Rock Hill SC, US
Zhengming Zhang - Rock Hill SC, US
Lie Shi - Matthews NC, US
Daniel R. Alexander - Matthews NC, US
Jill V. Watson - Lake Wylie SC, US

International Classification:

H01M 10/42
H01M 2/16
H01M 10/0525

Abstract:

In accordance with at least selected aspects, objects or embodiments, optimized, novel or improved membranes, battery separators, batteries, and/or systems and/or related methods of manufacture, use and/or optimization are provided. In accordance with at least selected embodiments, the present invention is related to novel or improved battery separators that prevent dendrite growth, prevent internal shorts due to dendrite growth, or both, batteries incorporating such separators, systems incorporating such batteries, and/or related methods of manufacture, use and/or optimization thereof. In accordance with at least certain embodiments, the present invention is related to novel or improved ultra thin or super thin membranes or battery separators, and/or lithium primary batteries, cells or packs incorporating such separators, and/or systems incorporating such batteries, cells or packs. In accordance with at least particular certain embodiments, the present invention is related to shutdown membranes or battery separators, and/or lithium primary batteries, cells or packs incorporating such separators, and/or systems incorporating such batteries, cells or packs.