Sung Ho Choi

US Patent:

20220367975, Nov 17, 2022

Filed:

May 12, 2021

Appl. No.:

17/318268

Inventors:

- Irvine CA, US
Benjamin Yong Park - Mission Viejo CA, US
Sanjaya D. Perera - Irvine CA, US
Xuan-Dung Dang - Stevenson Ranch CA, US
Sung Won Choi - San Diego CA, US

International Classification:

H01M 50/46
H01M 4/505
H01M 4/134
H01M 4/525
H01M 50/403
H01M 10/0525

Abstract:

Systems and methods are provided for configuring cell performance using specific anode, cathode, and separator combinations. Separators with significant adhesive properties may be used in forming rechargeable cells, such as lithium-ion cells. The separator with significant adhesive properties may include an adhesive coating, applied on one or both sides of the separator, and/or adhesive material is dissolved or deposited within the separator. The separators with significant adhesive properties may also include one or more ceramic layers.

US Patent:

20210104724, Apr 8, 2021

Filed:

Oct 7, 2019

Appl. No.:

16/594508

Inventors:

- Irvine CA, US
Ian Browne - , US
Sung Won Choi - San Diego CA, US
Fred Bonhomme - Lake Forest CA, US

International Classification:

H01M 4/04
H01M 10/44
H01M 4/38
H01M 4/587
H01M 4/36
H01M 10/0525

Abstract:

Systems and methods for silicon-dominant lithium-ion cells with controlled utilization of silicon may include a cathode, an electrolyte, and an anode, where the anode has an active material comprising more than 50% silicon. The battery may be charged by lithiating silicon while not lithiating carbon. The active material may comprise more than 70% silicon. A voltage of the anode during discharge of the battery may remain above a minimum voltage at which silicon can be lithiated. The anode may have a specific capacity of greater than 3000 mAh/g. The battery may have a specific capacity of greater than 1000 mAh/g. The anode may have a greater than 90% initial Coulombic efficiency and may be polymer binder free. The battery may be charged at a 10 C rate or higher. The battery may be charged at temperatures below freezing without lithium plating. The electrolyte may comprise a liquid, solid, or gel.

US Patent:

20210098784, Apr 1, 2021

Filed:

Sep 26, 2019

Appl. No.:

16/584574

Inventors:

- Irvine CA, US
Ian Browne - Orange CA, US
Sung Won Choi - San Diego CA, US
Fred Bonhomme - Lake Forest CA, US

International Classification:

H01M 4/38
H01M 10/0525
H01M 4/134

Abstract:

Systems and methods for silicon dominant lithium-ion cells with controlled lithiation of silicon may include a cathode, an electrolyte, and an anode. The anode may include silicon lithiated at a level after discharge that is configured to be above a minimum threshold level, where the minimum threshold lithiation is 3% silicon lithiation. The lithiation level of the silicon after charging the battery may range between 30% and 95% silicon lithiation, between 30% and 75% silicon lithiation, between 30% and 65% silicon lithiation, or between 30% and 50% silicon lithiation. The lithiation level of the silicon after discharging the battery may range between 3% and 50% silicon lithiation, between 3% and 30% silicon lithiation, or between 3% and 10% silicon lithiation. The minimum threshold level may be a lithiation level below which a cycle life of the battery degrades. The electrolyte may include a liquid, solid, or gel.

US Patent:

20210083276, Mar 18, 2021

Filed:

Sep 13, 2019

Appl. No.:

16/570311

Inventors:

- Irvine CA, US
Younes Ansari - Irvine CA, US
Frederic Bonhomme - Lake Forest CA, US
Benjamin Park - Mission Viejo CA, US
Sung Won Choi - San Diego CA, US
Giulia Canton - Irvine CA, US

International Classification:

H01M 4/38
H01M 4/04
H01M 4/62
H01M 4/66

Abstract:

Disclosed are anodes created using water based adhesive solutions, low temperature methods for laminating anodes comprising water based adhesives, and alkali ion batteries that comprise the anodes.

US Patent:

20200373620, Nov 26, 2020

Filed:

Aug 10, 2020

Appl. No.:

16/989510

Inventors:

- Irvine CA, US
Benjamin Yong Park - Mission Viejo CA, US
Heidi Anderson - Rancho Santa Margarita CA, US
Sung Won Choi - San Diego CA, US

International Classification:

H01M 10/0567
H01M 4/38
H01M 10/0525
H01M 4/134
H01M 4/36
H01G 11/58
H01G 11/64
H01M 4/62
H01G 11/30
H01G 11/32

Abstract:

Electrolytes and electrolyte additives for energy storage devices comprising an ether compound are disclosed. The energy storage device comprises a first electrode and a second electrode, wherein at least one of the first electrode and the second electrode is a Si-based electrode, a separator between the first electrode and the second electrode, an electrolyte, and at least one electrolyte additive selected from ether compounds.

US Patent:

20200014068, Jan 9, 2020

Filed:

Sep 18, 2019

Appl. No.:

16/574817

Inventors:

- Irvine CA, US
Benjamin Yong Park - Mission Viejo CA, US
Hong Gan - Miller Place NY, US
Sung Won Choi - San Diego CA, US

International Classification:

H01M 10/0569
H01M 10/052

Abstract:

An energy storage device comprising a first electrode and a second electrode, wherein at least one of the first electrode and the second electrode comprises a self-supporting composite material film, a separator between the first electrode and the second electrode, and an electrolyte in contact with the first electrode, the second electrode, and the separator, wherein the electrolyte comprises at least one of a fluorine-containing cyclic carbonate, a fluorine-containing linear carbonate, and a fluoroether. The composite material film having greater than 0% and less than about 90% by weight of silicon particles, and greater than 0% and less than about 90% by weight of one or more types of carbon phases. At least one of the one or more types of carbon phases can be a substantially continuous phase that holds the composite material film together such that the silicon particles are distributed throughout the composite material film.

US Patent:

20190190069, Jun 20, 2019

Filed:

Dec 7, 2018

Appl. No.:

16/213873

Inventors:

- Irvine CA, US
Benjamin Yong Park - Mission Viejo CA, US
Sung Won Choi - San Diego CA, US
Heidi Anderson - Rancho Santa Margarita CA, US

International Classification:

H01M 10/0567
H01M 10/0525
H01M 4/38
H01M 4/134

Abstract:

Electrolytes and electrolyte additives for energy storage devices comprising linear carbonate compounds.

US Patent:

20190190070, Jun 20, 2019

Filed:

Dec 7, 2018

Appl. No.:

16/213955

Inventors:

- Irvine CA, US
Benjamin Yong Park - Mission Viejo CA, US
Ian Browne - Orange CA, US
Tracy Ho - Garden Grove CA, US
Sung Won Choi - San Diego CA, US

International Classification:

H01M 10/0567
H01M 4/38
H01M 4/587
H01M 4/36

Abstract:

Electrolytes and electrolyte additives for energy storage devices comprising a carboxylic ether, a carboxylic acid based salt, or an acrylate electrolyte are disclosed. The energy storage device comprises a first electrode and a second electrode, wherein at least one of the first electrode and the second electrode is a Si-based electrode, a separator between the first electrode and the second electrode, an electrolyte, and at least one electrolyte additive selected from carboxylic ethers, carboxylic acid based salts, and acrylates.