Mitsubishi Chemical Corporation

Arthur D. Little, Inc.

Other

Mhb Joint Venture

Ultracell Corporation

The Mead Corporation

Valence Technology, Inc.

Pacific Lithium New Zealand Limited

Mitsubishi Cehmical Corporation

Denis G Fauteux

Martin F Van Buren

Arthur A Massucco

Jie Shi

Eric S Kolb

Dale R Shackle

John R Powell

Michael McLin

Wlodek T Krawiec

Ronnie D Wilkins

Robert Rounds, Iii

Jorgen S Lundsgaard

Michael Farina

Michael John Moore

Keiichi Seki

Kenji Okahara

Mehmet Rona

Eitaro Takahashi

Hans Desilvestro

Peter M Blonsky

Ronald A Carpio

Robert A Austin

Mei-Tsu Lee

Jefferis R Canan

S Yde-Andersen

Marty Van Buren

Richard Gary

Sonya Michelsen

Kazuko Otani

The present invention is drawn to a high power electrochemical energy storage device, comprising at least one stackable, monolithic battery unit. The monolithic battery unit includes at least two electrochemical energy storage cells. The cells have a lithium ion insertion anode and a lithium ion insertion cathode, a bipolar current collector between cells and end plate current collectors at the opposing ends of each battery unit. A frame may be associated with the perimeter of the current collector. The current collector comprises a high-conductivity metal. The device also has the at least two storage cells substantially aligned adjacent one another, a separator material associated between the anode and the cathode within each cell; and an electrolyte within each cell. Additionally, the present invention is drawn to a device combining two or more of the monolithic units, either in series or in parallel or any combination thereof, so as to create a high power, high voltage energy storage device.

Rechargeable high power electrochemical device

Electrochemical cell having a controlled electrode surface

The present invention relates to an electrode for an electrochemical cell comprising: a current collecting substrate; an active material layer associated with the substrate; and solid electrolyte interface layer associated with the active material layer, the solid electrolyte interface layer containing a reaction product of an aromatic compound.

Electrochemical cell having a pre-passivated electrode and associated fabrication process

A pre-passivated electrode for use in an electrochemical cell comprising an uncharged current collecting substrate, an active material layer associated with the substrate, and a solid electrolyte interface layer associated with the active material layer. The pre-passivated electrode fabricated in accordance with the present invention exhibits, among other things, increased coulombic efficiency and capacity.

An electrode for use in an electrochemical cell comprising a current collector, an electrode active material layer, and means for substantially increasing surface compatibility between the electrode active material layer and at least one of the current collector and an associated electrolyte. The surface compatibility increasing means includes at least a portion of the electrode active material layer associated with an interface modifying component, such as the product of a hydrosilated allylether.

Electrochemical cell having an interface modifying component and associated fabrication process

A process for conditioning an electrochemical cell comprising the steps of fabricating an electrochemical cell comprising a first electrode which comprises a carbonaceous active material and a lithium polysilicate binder, a second electrode, and an electrolyte, and controllably cycling the electrochemical cell, and in turn, forming a passivation layer near the interface between the first electrode and the electrolyte.

Conditioning carbonaceous materials through slow scanning cycling in an electrochemical cell

A primed current collector for use in an electrochemical cell comprising a current collector having a first surface and a second surface, and a primer applied to at least a portion of the first and/or second surfaces of the current collector, wherein the primer comprises a uniform layer of lithium polysilicate.

Current collector having a uniformly applied lithium polysilicate primer and associated fabrication process

A process for conditioning an electrochemical cell comprising the steps of fabricating an electrochemical cell comprising a first electrode, a second electrode, and an electrolyte, associating an additive with the electrochemical cell, elevating the temperature of the electrochemical cell, and cycling the electrochemical cell, and in turn, forming a passivation layer at an interface between one of the electrodes and the electrolyte.

Process for conditioning an electrochemical cell

Electrochemical cell having a surface modified electrode and associated fabrication process

The present invention is directed to an electrode, and associated fabrication process, for use in an electrochemical cell. The electrode has an active material comprising a transition metal oxide. A lithium salt having an organic component is associated with the surface of the transition metal oxide so as to increase compatibility with an associated electrolyte. In another embodiment, a lithium salt of saccharin may be adsorbed onto the surface of the transition metal oxide.

Electrode modification using surface associated lithium salts and an associated process for fabrication of an electrode

A process for fabricating an electrode for use in an electrochemical cell comprising the steps of: a) associating a current collector with an active material having a surface; b) applying an overlayment material to a substrate; c) associating the overlayment material with at least a portion of the surface of the active material; d) at least alternatively partially curing the active material; and e) removing the substrate and, in turn transferring at least a portion of the overlayment material to at least a portion of the active material. The electrode produced is used in an electrochemical cell comprising a current collector, an electrode active material having a surface, and an overlayment material associated with at least a portion of the active material. The electrode further includes means for increasing compatability of the electrode with an associated electrolyte.

Electrode having an overlayment and associated fabrication process

An electrode for use in an electrochemical cell comprising a current collecting substrate, an electrode active material cluster having at least one particle wherein the particle includes at least one inclusion, an elastomer binder surrounding at least a portion of the at least one particle, and means associated with the elastomer binder for precluding mechanical degradation of the electrode active material cluster and, in turn, loss of electrical continuity between the at least one particle therein.

Electrode materials having an elastomer binder and associated electrochemical and fabrication process

A battery apparatus comprising a casing, at least two stacked lithium ion cells a member for maximizing the utilization of the casing and a member for precluding inadvertent deformation of the casing. The casing includes a non-uniform inner periphery. Each of at least two stacked lithium ion cells is positioned within the casing. The utilization maximizing member maximizes the utilization of the inner periphery of the casing by facilitating the independent shaping of each of the at least two stacked lithium ion cells to confirm to the inner periphery. As a result, the shape of one cell does not limit or dictate the shape of any other cell. The deformation precluding member is associated with each of the at least two lithium ion cells, and, substantially precludes inadvertent deformation of the casing by the at least two lithium ion cells, during cell cycling and storage. The invention further includes a process for fabricating a battery apparatus.

Three dimensional free form battery apparatus

An electrochemical cell comprising a first electrode and a second electrode, an electrolyte, and a dopant associated with the electrolyte, wherein the dopant comprises a reservoir for controllably releasing salt into the electrolyte. The dopant further comprises means for controllably regulating internal pressure of the electrochemical cell as well as means for substantially precluding dendrite formation within the electrochemical cell.

Electrochemical cell having a doped electrolyte and associated fabrication and electrochemical processes

An electrochemical cell, and an associated process, wherein the cell includes a controlled electrode surface comprising an electrode with a metallic current collector having a surface, an electrolyte and a reduced additive. The invention further includes a passivating layer at the interface between the metallic current collector and the electrolyte. The passivating layer includes the reduced additive. This passivating layer substantially precludes contact between electrolyte solvent and surface of the metallic current collector to, in turn, substantially prevent gas formation within the cell, which would otherwise result from decomposition of the solvent upon contact with the surface of the metallic current collector. Also, the reduced additive will likewise be substantially precluded from generating a gas upon its decomposition.

Electrochemical cell having a controlled electrode surface and associated fabrication and chemical process

Growing community of inventors

Acton, MA, United States of America

Denis G Fauteux