Rovcal, Inc.

Eaglepicher Technologies, LLC

Rayovac Corporation

Spectrum Brands, Inc.

Roval, Inc.

Ernest Ndzebet

Viet H Vu

William C Bushong

Umamaheswari Janakiraman

Mario Destephen

Karthik Ramaswami

Ramanathan Thillaiyan

Paul Cheeseman

Erik Mortensen

Dong Zhang

Min Qi Yang

Greg Miller

M Edgar Armacanqui

Andrew John Roszkowski

Gregory James Davidson

Zhihong Jin

David Boone

Jon Luecke

Gregory Lee Miller

Deborah Gilbert

Jeffrey A Poirier

Jeremy Chi-Han Chang

Sergey Sazhin

Juergen Scherer

Gregory Scott Moy

Michael Parrot

William G Studyvin

Miguel E Armacanqui

Joe Don Edington

Wujun Fu

David R Mihara

Stephanie R Curtis

Edgar M Armacanqui

Jason A Mudge

Akshaya Kumar

David Timothy Andrew Darch

Destephen Mario

Joshua Dean

Thillaiyan Ramanathan

Diana Marmorstein

John C Pugsley

Mai Sayarath

Umamaheswari Viswanathan

Sergiy V Sazhin

Zihong Jin

Mai Tucker Sayarath

Umamaheswari Janakiraman Viswanathan

Vu Viet

Ramanathan Thilaiyan

Greg Davidson

Sergy Sazhin

Viet Vu

Jin Zihong

An electrochemical cell that converts chemical energy to electrical energy includes a cathode with an active material of fluorinated carbon on a perforated metal cathode current collector, a lithium anode on a perforated metal anode current collector, a stepped header, a stable electrolyte, and a separator. In various embodiments, an anode current collector design, a cathode current collector design, a stepped header design, a cathode formulation, an electrolyte formulation, a separator, and a battery incorporating the electrochemical cell are provided.

Electrochemical cell

A cathode material suitable for use in non-aqueous electrochemical cells that includes copper manganese vanadium oxide and, optionally, fluorinated carbon. A non-aqueous electrochemical cell comprising such a cathode material, and a non-aqueous electrochemical cell that additionally includes a lithium anode.

High rate and energy cathode material for lithium batteries

A non-aqueous electrochemical cell including a lithium anode, a solid cathode, a first separator and a second separator disposed between the anode and the cathode, and an electrolyte in fluid communication with the anode, the cathode, and the first and the second separators, the first separator having a higher melting point (or shut-down) temperature than the melting point (or shut-down) temperature of the second separator.

High energy density non-aqueous electrochemical cell with extended operating temperature window

An improved lithium-sulfur battery containing a surface-functionalized carbonaceous material. The presence of the surface-functionalized carbonaceous material generates weak chemical bonds between the functional groups of the surface-functionalized carbonaceous material and the functional groups of the polysulfides, which prevents the polysulfide migration to the battery anode, thereby providing a battery with relatively high energy density and good partial discharge efficiency.

Lithium-sulfur battery and methods of preventing insoluble solid lithium-polysulfide deposition

A battery includes an anode containing a lithium material, a cathode containing sulfur and a porous conducting medium, and an electrolyte, wherein the electrolyte contains an additive selected from the group consisting of an organic surfactant additive, an inorganic additive, and a mixture thereof. The organic surfactant additive may be a fluorosurfactant.

Lithium&#x2014;sulfur battery with performance enhanced additives

Alkaline electrochemical cells having extended service life and acceptable gassing and corrosion properties are disclosed. An amphoteric surfactant can be incorporated into the gelled anode mixture of an alkaline electrochemical cell, optionally with an organic phosphate ester surfactant or a sulfonic acid type organic surfactant or both. Zinc particles having a defined distribution of particle sizes can also be incorporated into a zinc anode. The electrolyte included, in the anode mixture can have a reduced hydroxide concentration.

Alkaline cell with performance enhancing additives

The present disclosure relates generally to a high capacity cathode material suitable for use in a non-aqueous electrochemical cell that comprises copper manganese oxide, which may be in amorphous or semi-crystalline form, and optionally fluorinated carbon. The present disclosure additionally relates to a non-aqueous electrochemical cell comprising such a cathode material and, in particular, to such a non-aqueous electrochemical cell that can deliver a higher capacity than conventional cell.

Non-aqueous cell having amorphous or semi-crystalline copper manganese oxide cathode material

The present disclosure relates generally to indicating an end of life condition of an electrochemical device, and more particularly to systems and methods for sensing and determining an end of life condition in a cell comprising a high capacity cathode material suitable for use in a non-aqueous electrochemical cell. The high capacity cathode material has an amorphous or semi-crystalline form of copper manganese oxide, and optionally fluorinated carbon. The present disclosure additionally relates to transmitting the determined end of life condition to a user or monitoring device of the cell.

End of life indication system and method for non-aqueous cell having amorphous or semi-crystalline copper manganese oxide cathode material

The present disclosure relates generally to a high capacity cathode material suitable for use in a non-aqueous electrochemical cell that comprises a mixture of at least three different cathode materials, and more specifically a mixture of fluorinated carbon, an oxide of copper and an oxide of manganese. The present disclosure additionally relates to a non-aqueous electrochemical cell comprising such a cathode material and, in particular, to such a non-aqueous electrochemical cell that can deliver a higher capacity than a conventional cell, and/or that possesses an improved end-of-life indication.

Non-aqueous electrochemical cell having a mixture of at least three cathode materials therein

The present invention relates to a high capacity electrochemical cell having a cathode containing an oxide of copper as an active material, as well as an anode, an electrolyte, and separators for use with the cathodes of the invention in an alkaline electrochemical cell.

Separators for alkaline electrochemical cells

The present invention relates to a copper-manganese mixed oxide cathode material, which is suitable for use in a cathode of an electrochemical cell, and which has the formula MnCuO.nHO, wherein the oxidation state of Cu is between about +1 and about +3, the oxidation state of Mn is between about +2 and about +7, x is equal to about 3-y, y is less than about 3, z is calculated or experimentally determined, using means known in the art, based on the values of x and y, as well as the oxidation states of Mn and Cu, and nHO represents the surface and structural water present in the mixed oxide material. The present invention further relates to an electrochemical cell comprising the noted cathode material.

Copper-manganese mixed oxide cathode material for use in alkaline cells having high capacity

The present invention relates to a high capacity electrochemical cell including an anode, a cathode, and a separator disposed between the anode and cathode. The anode is configured to operate in combination with a quantity of an oxide of copper in the cathode. The cell is capable of operating at a discharge voltage greater than 1.05 volts for at least an initial 5% of a cell discharge period at a current density of at least 5 mA/g, and can include a cathode active material that includes an oxide of copper.

Alkaline cells having high capacity

Aspects of the present invention provide a high capacity electrochemical cell having an anode, a cathode, and a separator disposed between the anode and cathode. The cathode includes a mixture having a first component, a second component and a third component. The first component includes a first element, the second component includes a second element, and the third component includes the first element and the second element. The mixture can, for instance, be a mixed metal oxide. The separator is configured to provide suitable ionic transport between the anode and the cathode.

Growing community of inventors

Madison, WI, United States of America

Ernest Ndzebet