Method of making a rechargeable manganese-oxide compound and related electrode material
Patent 5419986 Issued on May 30, 1995. Estimated Expiration Date: 
October 15, 2013. 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.
October 15, 2013. 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 References 1293463 3533740 3535217 3773916 Oxygen electrode and process for making the same Process for making manganese dioxide Process for producing electrolytic MnO2 from molten manganese nitrate hexahydrate Manganese dioxide electrodes Process for producing a positive electrode for a non-aqueous cell Production of electrolytic manganese dioxide InventorsAssigneeApplicationNo. 137577 filed on 10/15/1993US Classes:429/224, Manganese component is active material423/50, Forming insoluble substance in liquid423/87, Group VA metal or arsenic (Sb, Bi, or As)423/599Manganese (e.g., manganate, etc.)ExaminersPrimary: Kalafut, StephenAttorney, Agent or FirmForeign Patent References
International ClassH01M 004/50AbstractA method of making a rechargeable battery electrode material containing manganese oxide is provided. The method includes preparing an aqueous solution of manganese nitrate and dissolving bismuth nitrate into the solution. The mixture is heated to evaporate the water contained in the mixture and is further heated to facilitate decomposition of the nitrates in the mixture to form a compound containing manganese oxide and bismuth oxide. The compound is maintained at a temperature of between about 200 to 300 degrees Celsius for an additional 12 hours. Thereafter, the compound is cooled and ground to a desired particle size for use as a rechargeable battery electrode material. The compound may alto be mixed with commercially prepared electrolytic or chemical manganese dioxide to obtain a highly rechargeable battery electrode material. A related battery cell is also disclosed.Other References
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