Patents by Inventor Benjamin Yong Park

Benjamin Yong Park has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20230231119
    Abstract: The present disclosure relates to prelithiated Si electrodes, methods of prelithiating Si electrodes, and use of prelithiated electrodes in electrochemical devices are described. There are several characteristics of electrode prelithiation that enable the superior battery performance. First, a prelithiated silicon anode is already in its expanded state during SEI formation, and therefore less of the SEI layer breaks down and reforms during cycling. Second, the prelithiated anode has a lower anode potential, which may also help the cycle performance of an electrochemical device. A silicon-based electrode, for use in energy storage devices, may have prelithiated silicon active material with a prelithiation level of above 0% to about 30%, with a lithium source within the energy storage devices providing excess lithium for contributing at least a portion of the prelithiation of the silicon active material.
    Type: Application
    Filed: March 6, 2023
    Publication date: July 20, 2023
    Inventors: Benjamin Yong Park, Frederic Bonhomme, Shiang Jen Teng, Victor E. House
  • Publication number: 20230223512
    Abstract: Silicon particles for use in an electrode in an electrochemical cell are provided. The silicon particles may have outer regions extending about 20 nm deep from the surfaces, the outer regions comprising an amount of aluminum such that a bulk measurement of the aluminum comprises at least about 0.01% by weight of the silicon particles. The bulk measurement of the aluminum may provide the amount of aluminum present at least in the outer regions.
    Type: Application
    Filed: December 27, 2022
    Publication date: July 13, 2023
    Inventors: Benjamin Yong Park, Jill R. Pestana, Xiaohua Liu, Frederic Bonhomme
  • Publication number: 20230207775
    Abstract: Electrodes and methods of forming electrodes are described herein. The electrode can be an electrode of an electrochemical cell or battery. The electrode includes a current collector and a film in electrical communication with the current collector. The film may include a carbon phase that holds the film together. The electrode further includes an electrode attachment substance that adheres the film to the current collector.
    Type: Application
    Filed: February 21, 2023
    Publication date: June 29, 2023
    Inventors: Benjamin Yong Park, Ian R. Browne, Stephen W. Schank, Steve Pierce
  • Publication number: 20230187710
    Abstract: Systems and methods are provided for state-of-health models for lithium-silicon batteries. State-of-health (SOH) of a lithium-ion cell may be assessed, with the assessing including calculating the state-of-health (SOH) using an enhanced state-of-health (SOH) model, with the enhanced state-of-health (SOH) model using input data other than data provided directly by the lithium-ion cell. The input data includes at least data acquired during operation of the lithium-ion cell and/or data acquired during manufacturing and initialization of the lithium-ion cell or electrodes of the lithium-ion cell. The lithium-ion cell may be a silicon-dominant cell including a silicon-dominant anode with silicon>50% of active material of the anode, and the enhanced state-of-health (SOH) model may be configured based on one or more characteristics unique to silicon-dominant cells.
    Type: Application
    Filed: December 13, 2021
    Publication date: June 15, 2023
    Inventors: Samuel Keene, Benjamin Yong Park
  • Publication number: 20230187716
    Abstract: Systems and methods are provided for algorithm-optimized voltage and/or current windows for lithium-silicon batteries. A lithium-ion cell may be managed, with the managing including controlling voltage and/or current of the lithium-ion cell using an enhanced algorithm. The controlling includes adjusting voltage and/or current limits applied during one or both of charging and discharging of the lithium-ion cell, and the enhanced algorithm is configured to control a voltage range and/or a current range of the lithium-ion cell to maximize a combination of one or more variable associated with the lithium-ion cell including one or more of cycle life, energy density, cumulative capacity before end of life, and cumulative energy before end of life. The lithium-ion cell may be a silicon-dominant cell having a silicon-dominant anode with silicon >50% of active material of the anode, and the enhanced algorithm may be configured based on characteristic(s) unique to silicon-dominant cells.
    Type: Application
    Filed: December 13, 2021
    Publication date: June 15, 2023
    Inventors: Samuel Keene, Benjamin Yong Park
  • Publication number: 20230187711
    Abstract: Systems and methods are provided for state-of-health balanced battery management system. State-of-health (SOH) of one or more lithium-ion cells may be assessed, and based on the assessing of state-of-health (SOH), the one or more lithium-ion cells may be controlled. The controlling may include setting or modifying one or more operating parameters of at least one lithium-ion cell, and the controlling may be configured to equilibrate the state-of-health (SOH) of the one or more lithium-ion cells or to modify a state-of-health (SOH) of at least one lithium-ion cell so that the one or more lithium-ion cells have a uniform state-of-health (SOH).
    Type: Application
    Filed: December 13, 2021
    Publication date: June 15, 2023
    Inventors: Samuel Keene, Benjamin Yong Park
  • Publication number: 20230178803
    Abstract: Electrolytes and electrolyte additives for energy storage devices comprising sulfonate or carboxylate salt based compounds 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 comprising at least two electrolyte co-solvents, wherein at least one electrolyte co-solvent comprises a sulfonate or carboxylate salt based compound.
    Type: Application
    Filed: October 11, 2022
    Publication date: June 8, 2023
    Inventors: Liwen Ji, Benjamin Yong Park
  • Patent number: 11652239
    Abstract: Electrolytes and electrolyte additives for energy storage devices comprising dihydrofuranone based compounds 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 comprising at least two electrolyte co-solvents, wherein at least one electrolyte co-solvent comprises a dihydrofuranone based compound.
    Type: Grant
    Filed: May 23, 2022
    Date of Patent: May 16, 2023
    Assignee: Enevate Corporation
    Inventors: Hong Zhao, Liwen Ji, Heidi Anderson, Benjamin Yong Park
  • Publication number: 20230127931
    Abstract: Single Li-ion conducting solid-state polymer electrolytes for use in energy storage devices are disclosed. The energy storage device comprises a first electrode and a second electrode, where 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, and an electrolyte. Electrolytes may include all-solid-state polymer electrolytes, quasi-solid polymer electrolytes and/or polymer gel electrolytes. The single Li-ion conducting solid-state polymer electrolytes can improve the electrochemical performances and safety of Si anode-based Li-ion batteries.
    Type: Application
    Filed: August 24, 2022
    Publication date: April 27, 2023
    Inventors: Liwen Ji, Benjamin Yong Park
  • Publication number: 20230123972
    Abstract: A clamping device for an electrochemical cell stack is provided. The clamping device can include a first plate and a second plate. The second plate can be positionable relative to the first plate such that a space between the first plate and the second plate can be sized to receive an electrochemical cell stack. The device also can include a coupling member coupling the first plate to the second plate. At least one of the first and second plates can be movable away from the other plate. The coupling member can have a first end portion and a second end portion. The device further can include an elastic member disposed between the first end portion and the second end portion.
    Type: Application
    Filed: December 20, 2022
    Publication date: April 20, 2023
    Inventors: Genis Turon Teixidor, Stephen W. Schank, Benjamin Yong Park, Rabih Bachir Zaouk
  • Patent number: 11631841
    Abstract: Methods of preparing an electrode material can include providing silicon particles, forming a mixture comprising the silicon particles dispersed in a solvent, and forming a suspension by adding metal alkoxide or metal aryloxide to the mixture. The methods can also include evaporating the solvent in the suspension to form metal alkoxide or metal aryloxide coated silicon particles. The methods can further include heating the coated silicon particles to form metal oxide coated silicon particles.
    Type: Grant
    Filed: December 20, 2019
    Date of Patent: April 18, 2023
    Assignee: Enevate Corporation
    Inventors: Liwen Ji, Rahul R. Kamath, Ian Russell Browne, Benjamin Yong Park
  • Publication number: 20230115890
    Abstract: Electrolytes and electrolyte additives for energy storage devices comprising linear carbonate compounds.
    Type: Application
    Filed: September 27, 2022
    Publication date: April 13, 2023
    Inventors: Liwen Ji, Benjamin Yong Park, Sung Won Choi, Heidi Anderson
  • Publication number: 20230108463
    Abstract: Additives for energy storage devices comprising phosphorus-containing compounds are disclosed. The energy storage device comprises a first electrode and a second electrode, where 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, and an electrolyte composition. Phosphorus-containing compounds may serve as additives to the first electrode, the second electrode and/or the electrolyte, as well as the separator.
    Type: Application
    Filed: October 11, 2022
    Publication date: April 6, 2023
    Inventors: Liwen Ji, Benjamin Yong Park
  • Publication number: 20230103958
    Abstract: Electrolytes and electrolyte additives for energy storage devices comprising benzoyl peroxide based compounds 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 comprising at least two electrolyte co-solvents, wherein at least one electrolyte co-solvent comprises a benzoyl peroxide based compound.
    Type: Application
    Filed: October 4, 2022
    Publication date: April 6, 2023
    Inventors: Liwen Ji, Benjamin Yong Park
  • Publication number: 20230099618
    Abstract: Electrolytes and electrolyte additives for use in energy storage devices, comprising cyclic carbonate compounds.
    Type: Application
    Filed: August 9, 2022
    Publication date: March 30, 2023
    Inventors: Liwen Ji, Heidi Anderson, Benjamin Yong Park
  • Publication number: 20230094087
    Abstract: Electrolytes and electrolyte additives for energy storage devices comprising phosphazene based compounds 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 comprising at least two electrolyte co-solvents, wherein at least one electrolyte co-solvent comprises a phosphazene based compound.
    Type: Application
    Filed: November 15, 2022
    Publication date: March 30, 2023
    Inventors: Liwen Ji, Benjamin Yong Park
  • Patent number: 11616219
    Abstract: Electrodes and methods of forming electrodes are described herein. The electrode can be an electrode of an electrochemical cell or battery. The electrode includes a current collector and a film in electrical communication with the current collector. The film may include a carbon phase that holds the film together. The electrode further includes an electrode attachment substance that adheres the film to the current collector.
    Type: Grant
    Filed: November 9, 2021
    Date of Patent: March 28, 2023
    Assignee: Enevate Corporation
    Inventors: Benjamin Yong Park, Ian R. Browne, Stephen W. Schank, Steve Pierce
  • Publication number: 20230081140
    Abstract: Systems and methods are disclosed that provide for pyrolysis reactions to be performed at reduced temperatures that convert non-conductive precursor polymers to conductive carbon suitable for use in electrode materials, which may be incorporated into a cathode, an electrolyte, and an anode, where the pyrolysis method may include one or more catalysts or reactive reagents.
    Type: Application
    Filed: November 15, 2022
    Publication date: March 16, 2023
    Inventors: Ian Browne, Benjamin Yong Park, Giulia Canton, Fred Bonhomme
  • Patent number: 11605806
    Abstract: Methods of forming a composite material film can include providing a layer comprising a carbon precursor and silicon particles on a sacrificial substrate. The methods can also include pyrolysing the carbon precursor to convert the precursor into one or more types of carbon phases to form the composite material film, whereby the sacrificial substrate has a char yield of about 10% or less.
    Type: Grant
    Filed: September 15, 2021
    Date of Patent: March 14, 2023
    Assignee: ENEVATE CORPORATION
    Inventors: Ian Russell Browne, Rahul R. Kamath, Monika Chhorng, Benjamin Yong Park
  • Patent number: 11605813
    Abstract: Electrolytes and electrolyte additives for energy storage devices comprising thiophene compounds 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 a thiophene compound. In some embodiments, the thiophene compound is a terthiophene or a thiophene oligomer.
    Type: Grant
    Filed: June 1, 2020
    Date of Patent: March 14, 2023
    Assignee: Enevate Corporation
    Inventors: Liwen Ji, Benjamin Yong Park