Philip John Slezak

6869727, Mar 22, 2005

Sep 20, 2002

10/251002

Philip J Slezak - North Ridgeville OH, US

Eveready Battery Company, Inc. - St. Louis MO

H01M002/02

429164, 429209

An electrochemical battery cell in accordance with the invention has a high electrode interfacial surface area to improve high rate discharge capacity, and the shapes of the electrodes facilitate the manufacture of cells of high quality and reliability at high speeds suitable for large scale production. The interfacial surfaces of the solid body electrodes have radially extending lobes that increase the interfacial surface area. The lobes do not have sharp corners, and the concave areas formed between the lobes are wide open, to facilitate assembly of the separator and insertion of the other electrode into the concave areas without leaving voids between the separator and either electrode.

7341803, Mar 11, 2008

Feb 28, 2003

10/376830

Weiwei Huang - Westlake OH, US
Philip J. Slezak - North Ridgeville OH, US

Eveready Battery Company, Inc. - St. Louis MO

H01M 4/02
H01M 4/42
H01M 4/50

429209, 429229, 429224, 4292311, 429206

An alkaline battery cell with improved high rate and high power discharge capacity is provided, without sacrificing capacity at low rate and low power, by adding at least a second anode or cathode, reducing the effective maximum electrode thicknesses, and increasing the active material density in one or more electrodes.

7553585, Jun 30, 2009

Feb 4, 2005

11/051313

Philip J. Slezak - North Ridgeville OH, US

Eveready Battery Company, Inc. - St. Louis MO

H01M 4/02

429209, 429164, 429128

An electrochemical battery cell in accordance with the invention has a high electrode interfacial surface area to improve high rate discharge capacity, and the shapes of the electrodes facilitate the manufacture of cells of high quality and reliability at high speeds suitable for large scale production. The interfacial surfaces of the solid body electrodes have radially extending lobes that increase the interfacial surface area. The lobes do not have sharp corners, and the concave areas formed between the lobes are wide open, to facilitate assembly of the separator and insertion of the other electrode into the concave areas without leaving voids between the separator and either electrode.

20030180612, Sep 25, 2003

Mar 25, 2003

10/396845

David Kilby - North Olmsted OH, US
Philip Slezak - North Ridgeville OH, US

H01M004/50
H01M004/42
H01M004/62
H01M010/26

429/224000, 429/229000, 429/206000, 429/232000

An alkaline electrochemical cell is disclosed having a positive electrode, a negative electrode, and an electrolyte. The positive electrode comprises electrolytic manganese dioxide having a pH-voltage of at least about 0.860 volt. The electrolytic manganese dioxide also preferably has less than about 250 ppm and more preferably less than about 150 ppm of potassium impurities by weight. Electrolytic manganese dioxide having these properties exhibits significant synergistic and unexpected improvements in high-rate service, which translates to improved high-rate service life of the electrochemical cell containing the improved electrolytic manganese dioxide in its positive electrode.

6589693, Jul 8, 2003

Jun 14, 2000

09/593898

David Kilby - North Olmsted OH
Philip J. Slezak - North Ridgeville OH

Eveready Battery Company, Inc. - St. Louis MO

H01M 458

429224, 4292181, 429229, 4292318

An alkaline electrochemical cell is disclosed having a positive electrode, a negative electrode, and an electrolyte. The positive electrode comprises electrolytic manganese dioxide having a pH-voltage of at least about 0. 860 volt. The electrolytic manganese dioxide also preferably has less than about 250 ppm and more preferably less than about 150 ppm of potassium impurities by weight. Electrolytic manganese dioxide having these properties exhibits significant synergistic and unexpected improvements in high-rate service, which translates to improved high-rate service life of the electrochemical cell containing the improved electrolytic manganese dioxide in its positive electrode.

20200203713, Jun 25, 2020

Dec 18, 2019

16/718544

- St. Louis MO, US
Philip J. Slezak - North Ridgeville OH, US

Energizer Brands, LLC - St. Louis MO

H01M 4/1393
H01M 4/66
H01M 4/1395
H01M 4/505
H01M 4/62
H01M 4/525
H01M 4/04

Cathodes are provided, wherein at least one of the cathode's active material, binder, or graphite are in the form of carbon-coated particles. Alternatively, rings of the cathode, or the cathode itself, may be coated with carbon. The coating may be as thin as a single layer of carbon. Electrochemical cells comprising such cathodes are also provided. Methods of preparing such cathodes and electrochemical cells are also provided.

20200067100, Feb 27, 2020

Aug 22, 2019

16/547990

- St. Louis MO, US
Philip J. Slezak - North Ridgeville OH, US

H01M 4/62
H01M 4/48
H01M 10/26
H01M 4/24

Alkaline electrochemical cells are provided, wherein a conductive carbon is included in the cell's cathode in order to decrease resistivity of the cathode, so as to improve the discharge of the cell, particularly in high drain applications. The conductive carbon may comprise carbon nanotubes and/or graphene. Methods for preparing such cells are also provided.

20190115601, Apr 18, 2019

Dec 13, 2018

16/218955

- St. Louis MO, US
Philip J. Slezak - North Ridgeville OH, US

Energizer Brands, LLC - St. Louis MO

H01M 6/52
H01M 4/42
C01G 45/02
H01M 4/50
C22B 3/44
H01M 4/38
C22B 47/00
C22B 7/00

Methods of recycling batteries are provided, in which reaction conditions and elements are designed to maximize manganese recovery while minimizing zinc and potassium impurities in the recovered manganese. Methods of treating waste solution created by washing the manganese, so as to remove zinc from the waste solution, are also provided. Batteries prepared via such methods are also provided.