The Gillette Company

Duracell U.S. Operations, Inc.

Nikolai Nikolaevich Issaev

Michael Pozin

Fred Joseph Berkowitz

Brianna Rose Derooy

William L Bowden

Michael Sliger

Maya Stevanovic

Eric Navok

Kirakodu S Nanjundaswamy

Fan Zhang

Alexander Kaplan

Jaroslav Janik

James Joseph Cervera

Junan Kao

Zhiping Jiang

Leslie J Pinnell

Jane A Blasi

Kenneth Edward Yelm

Michael Dean Sliger

The invention is directed toward a primary AA alkaline battery. The primary AA alkaline battery includes an anode; a cathode; an electrolyte; and a separator between the anode and the cathode. The anode includes an electrochemically active anode material. The cathode includes an electrochemically active cathode material. The electrolyte includes potassium hydroxide. The primary AA alkaline battery has an integrated in-cell ionic resistance (R) at 22° C. of less than about 39 mΩ. The separator has a porosity of greater than 70%.

Primary alkaline battery with integrated in-cell resistances

A secondary electrochemical cell comprises an anode, a cathode including electrochemically active cathode material, a separator between the anode and the cathode, and an electrolyte. The electrolyte comprises at least one salt dissolved in at least one organic solvent. The separator in combination with the electrolyte has an area-specific resistance of less than about 2 ohm-cm.

Secondary electrochemical cells with separator and electrolyte combination

The invention is directed toward a primary AA alkaline battery. The primary AA alkaline battery includes an anode; a cathode; an electrolyte; and a separator between the anode and the cathode. The anode includes an electrochemically active anode material. The cathode includes an electrochemically active cathode material. The electrolyte includes a hydroxide. The primary AA alkaline battery has an integrated in-cell ionic resistance (R) at 22&#xb0; C. of less than about 39 m&#x3a9;.

The invention is directed toward a primary AA alkaline battery. The primary AA alkaline battery includes an anode; a cathode; an electrolyte; and a separator between the anode and the cathode. The anode includes an electrochemically active anode material. The cathode includes an electrochemically active cathode material. The electrolyte includes potassium hydroxide. The primary AA alkaline battery has an integrated in-cell ionic resistance (R) at 22&#xb0; C. of less than about 39 m&#x3a9;. The separator has a porosity of greater than 70%.

The invention is directed toward a primary AA alkaline battery. The primary AA alkaline battery includes an anode; a cathode; an electrolyte; and a separator between the anode and the cathode. The anode includes an electrochemically active anode material. The cathode includes an electrochemically active cathode material. The electrolyte includes potassium hydroxide. The primary AA alkaline battery has an integrated in-cell ionic resistance (R) at 22&#xb0; C. of less than about 39 m&#x3a9;. The electrochemically active cathode material includes electrolytic manganese dioxide. The electrolytic manganese dioxide has a specific cathode loading from about 2.9 g/cmto about 3.45 g/cm. The separator has a porosity of greater than 75%.

An alkaline electrochemical cell having an anode including electrochemically active anode material, a cathode including electrochemically active cathode material, a separator between the anode and the cathode, and an electrolyte. The electrolyte includes a hydroxide dissolved in water. The separator in combination with the electrolyte has an initial area-specific resistance between about 100 mOhm-cmand about 220 mOhm-cm.

Alkaline electrochemical cells with separator and electrolyte combination

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

A primary cell having an anode comprising lithium or lithium alloy and a cathode comprising iron disulfide (FeS) and carbon particles. The electrolyte comprises a lithium salt preferably lithium iodide (LiI) dissolved in an organic solvent mixture. The solvent mixture preferably comprises dioxolane, dimethoxyethane and sulfolane. The electrolyte typically contains between about 100 and 2000 parts by weight water per million parts by weight (ppm) electrolyte therein. A cathode slurry is prepared comprising iron disulfide 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

Batteries and related compositions and methods are disclosed. In some embodiments, a method of making a battery can include heating at least one cathode including a cathode material in an atmosphere including oxygen, heating the cathode in a vacuum, adding the cathode into a housing, adding a separator into the housing, and adding an anode into the housing.

Method of making electrode

A primary cell having an anode comprising lithium and a cathode comprising iron disulfide (FeS) and carbon particles. The cell can be in the configuration of a coin cell or 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 a nonaqueous solvent mixture which may include an organic cyclic carbonate such as ethylene carbonate and propylene carbon. The cell after assembly is subjected to a two step preconditioning (prediscahrge) protocol involving at least two distinct discharge steps having at lease one cycle of pulsed current drain in each step and at least one rest period (step rest) between said two steps, wherein said step rest period is carried out for a period of time at above ambient temperature. The preconditioning improves cell performance.

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.

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Woodbridge, CT, United States of America

Nikolai Nikolaevich Issaev