The Gillette Company

Duracell U.S. Operations, Inc.

Rimma A Sirotina

William L Bowden

Kirakodu S Nanjundaswamy

Fan Zhang

George M Cintra

Klaus Brandt

James Joseph Cervera

Dana Alexa Totir

Todd E Bofinger

Zhiping Jiang

Nikolay Krastev Iltchev

Joseph E Sunstrom

Hyoun Sook Choe

Jennifer Anne Nelson

Ignacio Chi

Yichun Wang

Ou Mao

Gary A Miller

Brian McGovern

Batteries are disclosed. In some embodiments, a battery includes a cathode having a composition that includes a manganese oxide. The composition has an X-ray diffraction pattern with a first peak at about 18 degrees, a second peak at about 22 degrees, and a third peak at about 32 degrees.

Battery cathodes

A primary battery includes a cathode having an acid-treated manganese dioxide, an anode, a separator between the cathode and the anode, and an alkaline electrolyte.

Acid-treated manganese dioxide and methods of making thereof

A method of making a cathode for a lithium primary battery includes lithiated manganese dioxide and a carbon fluoride. The cathode can provide high capacity and voltage with low gassing.

Method of making cathode

An improved electrolyte for a cell having an anode comprising magnesium or magnesium alloy. The cell's cathode may desirably include iron disulfide (FeS) as cathode active material. The improved electrolyte comprises a magnesium salt, preferably magnesium perchlorate dissolved in an organic solvent which preferably includes acetonitrile or mixture of tetrahydrofuran and propylene carbonate. The electrolyte includes an additive to retard the buildup of deleterious passivation coating on the magnesium anode surface, thereby enhancing cell performance. Such additive may preferably include 1-butyl-3-methylimidazolium tetrafluoroborate (BMIMBF), 1-butyl-3-methylimidazolium hexafluorophosphate (BMIMPF), lithium hexafluorophosphate (LiPF), or aluminum chloride (AlCl).

Magnesium cell with improved electrolyte

A primary cell having an anode comprising lithium and a cathode comprising a metal doped iron sulfide and carbon particles. A cathode slurry is prepared comprising the metal doped iron sulfide 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 containing metal doped iron sulfide

Batteries and methods of making batteries are disclosed. In some embodiments, a method of making a battery can include contacting a manganese oxide with lithium hydroxide and lithium bromide and/or lithium chloride, and incorporating the manganese oxide into a cathode of the battery.

A battery, a primary alkaline battery, has a cathode including manganese dioxide, carbon, and a binder. The manganese dioxide is selected to have a high power coefficient to provide the battery capable of high current discharge.

Battery comprising manganese dioxide having a high power coefficient

A method of making a cathode includes determining a sample of manganese dioxide having a power coefficient greater than about 3.4, and incorporating the sample of manganese dioxide into the cathode. The cathode can be incorporated into a battery, e.g., a cylindrical primary alkaline battery.

Growing community of inventors

Ashland, MA, United States of America

Rimma A Sirotina