The Gillette Company

Duracell U.S. Operations, Inc.

Yelena Kouznetsova

Steven Jeffrey Specht

Michael Pozin

Fred Joseph Berkowitz

Bhupendra Kanchanial Patel

Haitao Chang

Yang Zhao

David L Pappas

Robert John Pavlinsky

Thomas C Richards

Oleg Podoprigora

Boris Makovetski

Sathya Motupally

Jonathan O'Neill

William J Wandeloski

G Steven Kelsey

Maya Stevanovic

Zhiping Jiang

Barry D Josephs

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

Battery cartridges are disclosed that include a housing having a plurality of air access openings configured to selectively control flow of air into the housing; and at least two adjacent metal-air electrochemical cells within the housing, each electrochemical cell having an outer gas permeable barrier membrane layer that defines the exterior surface of the electrochemical cell; wherein there is a gap between adjacent electrochemical cells in the housing and wherein the air access openings in the housing are positioned over or partially overlapping each gap.

Battery cartridges

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

A battery includes a cathode having an interior surface and an exterior surface, and defining a cavity and two open ends; a separator disposed adjacent to the interior surface of the cathode; an anode disposed adjacent to the separator and inside the cavity; an air-permeable, liquid-impermeable barrier layer disposed adjacent to the exterior surface of the cathode, and defining an exterior surface of the battery; two end members connected to the open ends of the cathode; and an anode current collector extending through the two end members. Methods designed such a battery is also disclosed.

Batteries and battery systems

A non-hermetically sealed, electrochemical power source, includes a first electrode, a second electrode, a separator between the first electrode and the second electrode, and a membrane in fluid communication with an environment external to the battery. The second electrode is between the separator and the membrane. The membrane includes a first portion having a different property, e.g., density, porosity, mass transport resistance, thickness, or gas permeability, than a second portion of the membrane. Methods of designing an electrochemical cell cartridge are also disclosed.

Growing community of inventors

Brookfield, CT, United States of America

Yelena Kouznetsova