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US Patent 5153081 - Lithium manganese oxide compound
US Patent Issued on October 6, 1992
Estimated Patent Expiration Date:
July 27, 2010Estimated 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.
Estimated Patent Expiration Date:
July 27, 2010Estimated 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.AbstractThe invention provides a novel lithium manganese oxide compound in which oxygen anions, lithium cations and manganese cations are arranged in layers, each layer of lithium cations being sandwiched between two layers of oxygen anions, each layer of manganese cations being sandwiched between two layers of oxygen anions and each layer of oxygen anions being sandwiched between a layer of lithium cations and a layer of manganese cations. The invention also provides a method of making the compound; and an electrochemical cell employing the compound as its cathode.Other References
| InventorsAssigneeApplicationNo. 558816 filed on 07/27/1990US Classes:429/333, And acyclic ether solvent423/599, Manganese (e.g., manganate, etc.)423/641, Alkali metal (Li, Na, K, Rb, or Cs)429/224, Manganese component is active material429/338, The hetero ring is a cyclic carbonate (e.g., ethylene carbonate, propylene carbonate, etc.)429/342Acyclic carbonate solventField of Search423/605, Group VIIB metal (Mn, Tc, or Re)423/599, Manganese (e.g., manganate, etc.)423/641, Alkali metal (Li, Na, K, Rb, or Cs)429/224Manganese component is active materialExaminersPrimary: Lewis, MichaelAssistant: DiMauro, Peter Attorney, Agent or FirmUS Patent References2562705, 4246253, MnO2 derived from LiMn2 O4Issued on: 01/20/1981 Inventor: Hunter4277360, Manganese dioxide Issued on: 07/07/1981 Inventor: Mellors , et al.4758484, Non-aqueous secondary cell Issued on: 07/19/1988 Inventor: Furukawa , et al.4828834, Rechargeable organic electrolyte cell Issued on: 05/09/1989 Inventor: Nagaura , et al.4959282, Cathode active materials, methods of making same and electrochemical cells incorporating the same Issued on: 09/25/1990 Inventor: Dahn, et al.4980251Method of synthesizing a lithium manganese oxide Issued on: 12/25/1990 Inventor: Thackeray, et al. Foreign Patent References
International ClassesH01M 006/16H01M 004/50 C01G 045/12 Foreign Application Priority Data1989-07-28 ZA |
