Enevate Corporation

University of California

Evevate Corporation

Benjamin Yong Park

Liwen Ji

Ian Russell Browne

Heidi Leighette Anderson

Younes Ansari

Giulia Canton

David J Lee

Sung Won Choi

Rabih Bachir Zaouk

Frederic C Bonhomme

Genis Turon Teixidor

Fred Bonhomme

Jill Renee Pestana

William Hubert Schank

Rahul R Kamath

Sanjaya D Perera

Stephen W Schank

Hong Zhao

Alexander Gorkovenko

Xiaohua Liu

Monika Chhorng

Steve Pierce

Lothar Steffens

Samuel Keene

Kirk Shockley

Shiang Jen Teng

Ambica J Nair

Sam Keene

Xianyang Li

Hong Gan

Wei Wang

Robert Americo Rango

Michael Buet

Mya Le Thai

Vincent Giordani

Jeremy Chang

Jeff Swoyer

Tracy Ho

Victor E House

Dong Sun

Qing Zhang

Jose Vega

Uday S Kasavajjula

Marc Madou

Chunlei Wang

Qian Huang

Myunghwan Jeong

Sung Ju Cho

Samer Saab

Daniel Sylvinson Muthiah Ravinson

SungWon Choi

Ho Jung Yang

Lili Taherabadi

Rabih Zaouk

Heidi L Houghton

Mai Vietnam

Electrolytes and electrolyte additives for use in energy storage devices, comprising cyclic carbonate compounds.

Silicon-based energy storage devices with cyclic carbonate containing electrolyte additives

Systems and methods for sulfur-containing chemicals as cathode additives for silicon-based lithium ion batteries may include a silicon-based anode, an electrolyte, and a cathode. The cathode may include an active material and a sulfur-containing additive. The cathode active material may include one or more of nickel cobalt aluminum oxide (NCA), nickel cobalt manganese oxide (NCM), lithium iron phosphate (LFP), lithium cobalt oxide (LCO), and lithium manganese oxide (LMO). The sulfur-containing additive may include elemental sulfur and/or LiS. The sulfur-containing additive may include one or more of lithium polysulfides (LiS, where n=2-8), polysulfides, and organic polysulfides. The sulfur-containing additive may include one or more of metal sulfides, transition metal polysulfide complexes, S-containing organic polymers or copolymer, polymeric sulfur, and transition metal sulfides. The sulfur-containing additive may include 5% or less by weight of the active material, or 1% or less by weight of the active material.

Method and system for sulfur and sulfur-containing chemicals as cathode additives for silicon anode-based lithium ion batteries

Systems and methods for batteries comprising a cathode, an electrolyte, and an anode, wherein functional aliphatic and/or aromatic amine compounds or derivatives are used as electrolyte additives to reduce gas generation in Li-ion batteries.

Functional aliphatic and/or aromatic amine compounds or derivatives as electrolyte additives to reduce gas generation in Li-ion batteries

Electrolytes and electrolyte additives for energy storage devices comprising crown ether 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 crown ether based compound.

Silicon-based energy storage devices with electrolyte containing crown ether based compounds

Systems and methods are provided for synthesizing solid-state polymer electrolyte and/or using solid-state polymer electrolyte in production of all-solid-state alkali-ion batteries.

Solid-state polymer electrolyte for use in production of all-solid-state alkali-ion batteries

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.

Electrolyte compositions for batteries

Methods of forming electrochemical cells are described. In some implementations, the method can include providing an electrochemical cell having an electrode including electrochemically active material with at least about 20% to about 100% by weight of silicon. The method can include charging the electrochemical cell by providing a formation charge current at about 1 C or greater to the electrochemical cell. The method can also include discharging the electrochemical cell. In various implementations, substantially no rest of greater than about 5 minutes occurs between charging and discharging.

Methods of forming electrochemical cells

A pouched energy storage device can include a cell housing portion and a sealed portion. The device can also include a stack of electrodes housed within an inner region of the cell housing portion. Each electrode can have dimensions of width, length, and thickness. One or more electrodes can have at least one of the dimensions smaller than a corresponding dimension of other electrodes in the stack of electrodes. The device can also include an indentation on the cell housing portion adjacent the sealed portion. The indentation can form a stepped region in the inner region that is complimentary to the one or more electrodes having at least one of the dimensions smaller than a corresponding dimension of other electrodes in the stack of electrodes. The sealed portion can be folded onto the cell housing portion so that at least a part of the sealed portion resides in the indentation.

Stepped electrochemical cells with folded sealed portion

The disclosure herein pertains to a pressure regulation system for use in a silicon dominate anode lithium-ion cell. The pressure regulation system regulates a lifetime pressure on the lithium-ion cell in order to correct for capacity loss and mechanical failure due the expansion of silicon during operation. The pressure regulation system along with a housing maintains a certain pressure range on the lithium-ion cells during the cycling and the operational life of the energy storage device.

Pressure regulation system for silicon dominant anode lithium-ion cell

Systems and methods utilizing aqueous-based polymer binders for silicon-dominant anodes containing pyrolyzed carbon may include an electrode coating layer on a current collector, where the electrode coating layer is formed from silicon and a water soluble polymer and may comprise one or more additional materials. The electrode coating layer may include more than 70% silicon and the anode may be in a lithium ion battery.

Silicon dominant anodes containing pyrolyzed carbon

Systems and methods for all-conductive battery electrodes may include an electrode coating layer on a current collector, where the electrode coating layer comprises more than 50% silicon, and where each material in the electrode has a resistivity of less than 100 Ω-cm. The silicon may have a resistivity of less than 10 Ω-cm, less than 1 Ω-cm, or less than 1 mΩ-cm. The electrode coating layer may comprise pyrolyzed carbon and/or conductive additives. The current collector comprises a metal foil. The metal current collector may comprise one or more of a copper, tungsten, stainless steel, and nickel foil in electrical contact with the electrode coating layer. The electrode coating layer comprises more than 70% silicon. The electrode may be in electrical and physical contact with an electrolyte. The electrolyte may comprise a liquid, solid, or gel. The battery electrode may be in a lithium ion battery.

Method and system for all-conductive battery electrodes

Systems and methods are provided for control of furnace atmosphere for improving capacity retention of silicon-dominant anode cells. Furnace atmosphere may be controlled during processing of a silicon-dominated electrode in a furnace, with the processing including pyrolysis of the silicon-dominated electrode, and the controlling including setting or adjusting one or more of pressure of the furnace atmosphere, and composition of the furnace atmosphere. The controlling of the furnace atmosphere may be configured based on at least one environment condition. The at least one environment condition may be an oxygen-free environment.

Control of furnace atmosphere for improving capacity retention of silicon-dominant anode cells

Electrolytes and electrolyte additives for energy storage devices comprising a cyclic organosilicon 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 a cyclic organosilicon compound.

Silicon-based energy storage devices with cyclic organosilicon containing electrolyte additives

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.

Clamping device for an electrochemical cell stack

Growing community of inventors

Irvine, CA, United States of America

Benjamin Yong Park