Chemistry: electrical current producing apparatus – product – and – Current producing cell – elements – subcombinations and... – Include electrolyte chemically specified and method
Reexamination Certificate
2008-12-23
2011-11-01
Conley, Helen O (Department: 1726)
Chemistry: electrical current producing apparatus, product, and
Current producing cell, elements, subcombinations and...
Include electrolyte chemically specified and method
C429S206000, C429S209000, C429S218100, C429S224000, C429S229000
Reexamination Certificate
active
08048560
ABSTRACT:
An alkaline battery comprising a positive electrode, a negative electrode, a separator disposed between the positive electrode and the negative electrode; and an alkaline electrolyte, wherein the positive electrode includes manganese dioxide and graphite; the cumulative pore volume of pores with diameters of 3 to 5 nm in the manganese dioxide is X (cm3/g), and the weight loss rate of the manganese dioxide when heated from 150 to 400° C. is Y (%), X and Y satisfying 0.005≦X≦0.011, 3.4≦Y≦3.9, and −16.7X+3.58≦Y≦66.7X+3.17; the negative electrode includes zinc; and the alkaline electrolyte includes an aqueous potassium hydroxide solution.
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Ruetschi, Paul et al., “Cation Vacancies in MnO2 and Their Influence on Electrochemical Reactivity,” J. Electrochem, Soc. vol. 135, No. 11, pp. 2663-2669.
Nagaishi, Tsuyoshi et al., “Electrolysis condition and various characteristics of electrolytic manganese dioxide suitable for high rate discharge performance,” The 44th Battery Symposium pp. 656-657.
Japanese Notification of Reasons for Refusal issued in Japanese Patent Application No. 2008-118842, dated Aug. 7, 2008.
Kato Fumio
Nunome Jun
Shimamura Harunari
Conley Helen O
McConnell Wyatt
McDermott Will & Emery LLP
Panasonic Corporation
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