The Gillette Company

Duracell U.S. Operations, Inc.

Fred Joseph Berkowitz

Michael Pozin

Bhupendra Kanchanial Patel

Steven Jeffrey Specht

Yelena Kouznetsova

Nikolai Nikolaevich Issaev

Maya Stevanovic

Haitao Chang

Yang Zhao

Jaroslav Janik

Michael Sliger

Eric Navok

Zhiping Jiang

William T McHugh

Jane A Blasi

Boris Makovetski

Mark Curtis Brown

Robert Foster

Barry D Josephs

Ernesto Figueira

Reynald A Cantave

Michael Dean Sliger

Yelena Valentenovna Kouznetsova

Barry David Josephs

Yelena Valentinovna Kouznetsova

A battery includes a housing, and within the housing, an anode having an alkali metal as the active material, a cathode having a mass (m) of a cathode active material, for example, iron disulfide as the active material, a separator between the anode and the cathode, and an increased electrolyte volume (v).

Battery

A battery includes an anode having an alkali metal as the active material, a cathode having, for example, iron disulfide as the active material, and an increased electrolyte volume.

A primary cell having an anode comprising lithium or lithium alloy and a cathode comprising iron disulfide (FeS) or a mixture of iron disulfide (FeS) and iron sulfide (FeS) and conductive carbon particles. A cathode slurry is prepared comprising the FeSor FeSplus FeS powder, conductive carbon, binder, and a solvent. The binder is preferably a styrene-ethylene/butylene-styrene (SEBS) block copolymer. There is an advantage discovered in utilizing a hydronaphthalene solvent to form the cathode slurry. The preferred solvent is 1,2,3,4-tetrahydronaphthalene or decahydronaphthalene and mixtures thereof. The slurry mixture is coated onto a conductive substrate and the solvent evaporated leaving a dry cathode coating on the substrate. Higher drying temperature may be used resulting in a dry cathode coating which resists cracking. The anode and cathode can be spirally wound with separator therebetween and inserted into the cell casing with electrolyte then added.

Method of preparing cathode containing iron disulfide for a lithium cell

A primary electrochemical cell having an anode comprising lithium and a cathode comprising iron disulfide (FeS) and carbon particles. The cell is balanced so that the anode is in theoretical capacity excess (mAmp-hrs) compared to the theoretical capacity of the cathode. The anode and cathode can be spirally wound with separator therebetween and inserted into the cell casing with electrolyte then added. The electrolyte comprises a lithium salt dissolved in organic solvent.

Anode balanced lithium&#x2014;iron disulfide primary cell

Anode balanced lithium-iron disulfide primary cell

A cathode includes a foil current collector including a coating containing iron disulfide on one side that covers less than 100% of the side.

Battery electrodes

A primary lithium battery can include a current collector that includes aluminum, a positive lead that includes aluminum, or both. The aluminum battery components can have high mechanical strength and low electrical resistance.

Battery including aluminum components

An electrochemical cell is described. The electrochemical cell includes an anode, a cathode, a separator between said anode and said cathode, and an electrolyte. The electrolyte includes a salt dissolved in an organic solvent. The separator in combination with the electrolyte has an area specific resistance less than 2 ohm-cm. The electrochemical cell has an interfacial anode to cathode ratio of less than about 1.1.

Electrochemical cells with improved separator and electrolyte

An electrochemical cell is described. The electrochemical cell includes an anode, a cathode, a separator between said anode and said cathode, and an electrolyte. The electrolyte includes a salt dissolved in an organic solvent. The separator in combination with the electrolyte has an area specific resistance less than 2 ohm-cm.

A primary cell having an anode comprising lithium or lithium alloy and a cathode comprising iron disulfide (FeS), iron sulfide (FeS) and carbon particles. The electrolyte comprises a lithium salt dissolved in a solvent mixture. A cathode slurry is prepared comprising iron disulfide (FeS) powder, iron sulfide (FeS) powder, carbon, binder, and a liquid solvent. The mixture is coated onto a conductive substrate and solvent evaporated leaving a dry cathode coating on the substrate. The anode and cathode can be spirally wound with separator therebetween and inserted into the cell casing with electrolyte then added.

Lithium cell with cathode including iron disulfide and iron sulfide

Method of making cathode including iron disulfide

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New Milford, CT, United States of America

Fred Joseph Berkowitz