Manganese dioxide electrode for lithium batteries
Patent 4405699 Issued on September 20, 1983. Estimated Expiration Date: 
March 24, 2002. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
March 24, 2002. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesProcess for producing a positive electrode for a non-aqueous cell Alkaline primary cell Method of manufacturing positive electrode for nonaqueous cell Dry electric cells Manganese dioxide Patent #: 4277360 InventorAssigneeApplicationNo. 06/361440 filed on 03/24/1982US Classes:429/224, Manganese component is active material252/182.1, HAVING UTILITY AS A REACTIVE MATERIAL IN AN ELECTROCHEMICAL CELL; E.G., BATTERY, ETC.423/605Group VIIB metal (Mn, Tc, or Re)ExaminersPrimary: SkaparsAttorney, Agent or FirmInternational ClassesC01G 45/00 (20060101)C01G 45/02 (20060101) H01M 4/50 (20060101) Foreign Application Priority Data1981-06-11 DEAbstractA positive electrode for Li/MnO2 batteries uses as its active material γ-MnO2, which differs from the structurally similar electrolytic or synthetic manganese dioxide through the absence of water and from its dehydration product, which is ଲ-MnO2, through better electrochemical utilization capability. The modified γ-MnO2 is obtained by reduction of electrolytic manganese dioxide by means of hydrazine into -MnO(OH) and by oxidation of the latter through tempering in an oxygen stream at about 280° C. |
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