Christopher D Lang

US Patent:

20120164319, Jun 28, 2012

Filed:

Dec 19, 2011

Appl. No.:

13/329839

Inventors:

Christopher M. Lang - Haverhill MA, US
Aron Newman - Cambridge MA, US

International Classification:

B05D 5/12

US Classification:

4271266, 4271261, 4271263

Abstract:

The invention features a method of forming a metal phosphate coated cathode. Either a metal salt or a phosphate salt is dissolved in a nonaqueous solvent to form a first solution. The other of the metal salt or the phosphate salt (e.g., whichever compound is not dissolved in the nonaqueous solvent) is dissolved in a second solvent to form a second solution. The first solution and the second solution are mixed to form a precursor solution. A cathode material is added to the precursor solution to form a cathode-precursor solution. The cathode-precursor solution is dried to form the metal phosphate coated cathode.

US Patent:

20200028148, Jan 23, 2020

Filed:

Feb 8, 2019

Appl. No.:

16/270734

Inventors:

- Andover MA, US
Christopher M. Lang - Haverhill MA, US

International Classification:

H01M 4/04
H01M 4/36
H01M 4/62
H01M 10/42
H01M 4/66

Abstract:

A single or multi-component polymer coating is applied to components used in fabrication of electrochemical cells to protect the cells from damages that can result in cell imbalance or cell performance reduction. The polymer coating is electrically conductive under normal operating conditions but, when operated at low voltages, functions as an insulative material that increases the electrical resistance of the cell components. This increased electrical resistance improves cell safety by minimizing short-circuit current flow and reducing heating rate in the cell components.

US Patent:

20190372116, Dec 5, 2019

Filed:

Aug 20, 2019

Appl. No.:

16/545655

Inventors:

- Andover MA, US
Christopher M. Lang - Haverhill MA, US

International Classification:

H01M 4/36
H01M 4/131
H01M 4/136

Abstract:

A method for producing a coated powder including homogeneously mixing an electrochemically active material including electrochemically active particles with nanosize particles in a ratio determined by the surface area of the electrochemically active particles to form a homogeneous powder, adding a polymer and mixing to form a homogeneous solid mixture, adding a solvent to dissolve the polymer and form a viscous slurry, mixing the viscous slurry, and drying the viscous slurry to cause the nanosize particles to become localized adjacent to an outer surface of the electrochemically active particles with the polymer maintaining the proximity between the nanosize conductive particles and the outer surface of the electrochemically active particles.

US Patent:

20160072123, Mar 10, 2016

Filed:

Sep 8, 2015

Appl. No.:

14/847679

Inventors:

- Andover MA, US
Christopher M. Lang - Haverhill MA, US

International Classification:

H01M 4/36
H01M 4/133
H01M 4/587
H01M 4/04
H01M 4/136
H01M 4/58
H01M 4/525
H01M 4/62
H01M 4/131

Abstract:

A method for producing a coated powder including homogeneously mixing an electrochemically active material including electrochemically active particles with nanosize particles in a ratio determined by the surface area of the electrochemically active particles to form a homogeneous powder, adding a polymer and mixing to form a homogeneous solid mixture, adding a solvent to dissolve the polymer and form a viscous slurry, mixing the viscous slurry, and drying the viscous slurry to cause the nanosize particles to become localized adjacent to an outer surface of the electrochemically active particles with the polymer maintaining the proximity between the nanosize conductive particles and the outer surface of the electrochemically active particles.

US Patent:

20140272571, Sep 18, 2014

Filed:

Mar 15, 2013

Appl. No.:

13/835572

Inventors:

PHYSICAL SCIENCES, INC. - , US
Christopher M. Lang - Haverhill MA, US

International Classification:

H01M 4/66
H01M 4/84
H01M 4/82

US Classification:

429215, 427122, 427123, 427 58, 427600

Abstract:

A single or multi-component polymer coating is applied to components used in fabrication of electrochemical cells to protect the cells from damages that can result in cell imbalance or cell performance reduction. The polymer coating is electrically conductive under normal operating conditions but, when operated at low voltages, functions as an insulative material that increases the electrical resistance of the cell components. This increased electrical resistance improves cell safety by minimizing short-circuit current flow and reducing heating rate in the cell components.