The Gillette Company

Duracell U.S. Operations, Inc.

National Technology & Engineering Solutions of Sandia, LLC

Michael Pozin

Nikolai Nikolaevich Issaev

Fred Joseph Berkowitz

Maya Stevanovic

Steven Jeffrey Specht

Yelena Kouznetsova

Bhupendra Kanchanial Patel

Kirakodu S Nanjundaswamy

Lucyna M Pawlowska

Haitao Chang

Minkoo Kang

Brianna Rose Derooy

Walter Fred Paxton

Yang Zhao

Christopher Boczer

Frank M Delnick

Dharmendra Rana

John J Weckesser

William L Bowden

Bryan James Kaehr

Michael Sliger

Rosauro Del Rosario

Dana Alexa Totir

Zhiping Jiang

Fan Zhang

Alexander Kaplan

Jaroslav Janik

James Joseph Cervera

Eric Navok

Junan Kao

Leslie J Pinnell

In Tae Bae

Adam W Cook

Jane A Blasi

Barry D Josephs

Il-Seok Kim

Sean Chang

William Reinholtz

Rosario Del Rosauro

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

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 battery cell comprising a composite water-responsive safety layer and/or composite water- and pH-responsive safety layer to protect against tissue damage and/or electrolysis, when the battery cell is exposed to aqueous solution or tissue, is provided. The composite water-responsive safety layer and/or composite water- and pH-responsive safety layer is adapted to change from a non-electronically conducting state to an electronically conducting state.

Battery cell with safety layer

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

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.

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 present invention relates, in part, to methods of preparing a safety battery. Methods can include dispensing a safety ink formulation between the two poles of a battery. Upon exposure to moisture, the formulation provides an electrical connection between two poles, thus minimizing electrical discharge and/or reducing the formation of electrochemically generated ions at the pole(s).

Methods of preparing a safety battery

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%.

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Brookfield, CT, United States of America

Michael Pozin