摘要:
A high energy density electrochemical cell comprises an anode consisting essentially between about 63% and 92% lithium, on an atomic basis, and the balance essentially aluminum, a cathode and a nonaqueous electrolyte. Advantageously, the cathode is an electrochemically active transition metal chalcogenide, such as titanium disulfide, and the nonaqueous electrolyte is an organic solvent, such as dioxolane, having at least one lithium salt, preferably lithium perchlorate, dissolved therein.
摘要:
An alkaline battery having a divalent silver oxide (AgO) positive active material (cathode) in which gold ions are incorporated into the alkaline electrolyte on the positive side of the battery separator or barrier or added to the positive active material. The gold additive improves the stability of the divalent silver oxide (AgO) active material in the aqueous alkaline electrolyte without adversely affecting the electrochemical reactions during the discharge of the battery. The additive is present in the battery in amounts ranging from about 0.1 to about 10% by weight of silver in the divalent silver oxide positive active material. It is preferred that the divalent silver oxide active material contain at least 50% by weight of divalent silver oxide (AgO) with the balance of the active material comprising monovalent silver oxide (Ag2O) and metallic silver. The gold additive may be combined with other additives and has been found to be particularly effective in some batteries when combined with mercury and incorporated into either the positive active material or the electrolyte on the positive side of the separator.
摘要:
THIS INVENTION CONSISTS OF A SECONDARY,ELECTROCHEMICAL POWDER-PRODUCING CELL HAVING AN ANODE CONTAINING A MOLTEN ALKALI METAL OF LOW ELECTRONEGATIVITY,AN ELECTROLYTE CONTAINING ALKALI-METAL IONS, AND A NOVEL CATHODE CONTAINING A REACTANT COMPRISING A CHALCOGEN WHEREIN THE CATHODE COMPRISING A SUBSTNTIALLY HOMOGENEOUS MIXTURE OF THE RE-
ACTANT, A POROUS SUBSTRATE MATERIAL IMPREGNABLE BY THE REACTANT, ELECTROLYTE, AND AN ELECTRONICALLY-CONDUCTING MATERIAL.
摘要:
Cathodic electrodes incorporating molybdenum trioxide (MoO3) active cathode material, methods of preparation thereof and organic electrolyte cells employing light metal anodes in combination therewith. A preferred preparation method is disclosed wherein an MoO3 cathode is produced by pyrolytic decomposition of a mixture incorporating a molybdenum salt, wherein the molybdenum is hexavalent. Cells exhibiting high energy density, extended shelf life, relatively constant output voltage and good current capability are also disclosed.
摘要:
The capacity of an electrical energy storage device containing a high surface area carbon cathode, a metallic anode, and a fused salt electrolyte in contact with the electrodes, can be greatly enhanced by the addition of a tellurium compound directly to the electrolyte or to the carbon cathode. On passage of an electric current through the system, the tellurium becomes permanently bonded to the carbon of the cathode thereby forming an ''''active'''' tellurium species that manifests itself as a characteristic plateau in the discharge profile of the cell.
摘要:
A REDUCED OPERATING TEMPERATURE FOR A SODIUM-SULFUR BATTERY IS ACHIEVED WITH A NEW ELECTROLYTE COMPRISING SODIUM POLYSULFIDE, ALUMINUM SULFIDE OR ALUMINUM POLYSULFIDES AND FREE SULFUR WHEN THE ELECTRODES ARE IN THE CHARGE CONDITION. THE ELECTROLYTE, WHICH HAS A MELTING POINT IN THE RANGE OF APPROXIMATELY 200*C., PERMITS THE BATTERY TO BE SEALED WITH POLUTETRAFLUOROETHYLENE SEALING MATERIALS. BASED ON PRESENT LIMITED DATA, IT APPEARS THAT THE REDUCED MELTING POINT TEMPERATURE OF THE ELECTROLYTE CAN BE OBTAINED WITH SOLUTIONS IN WHICH THE RATIO OF THE MOLE PERCENT OF SODIUM POLYSULFIDE TO THE MOLE PERCENT OF ALUMINUM SULFIDE OR ALUMINUM POLYSULFIDE VARIES CONSIDERABLY.
摘要:
Method for producing a battery electrode, particularly a zinc electrode, of improved strength and stability, and which has a porous cellular structure, by mixing an aqueous dispersion of electrode material such as zinc oxide, with an aqueous dispersion of a latex type polymer such as a fluorocarbon polymer, e.g., polytetrafluoroethylene, casting a film of such mixture, drying the film, sintering the dried film, and rolling such sintered film, to form a fibrous polymer structure binding the particles of electrode material. The resulting sintered and rolled film can be employed per se as an electrode, e.g., a zinc electrode, or such film can be ground and the ground particles then compacted to form an electrode.
摘要:
AN ACCUMULATOR ELECTRODE WITH CAPACITY FOR STORING HYDROGEN, HAVING AN ACTIVE COMPONENT CONSTITUTING AT LEAST 40% BY WEIGHT OF THE ELECTRODE AND CONSISTING OF A HYDRIDE OF A METAL BELONGING TO THE THIRD, FOURTH OR FIFTH GROUP OF TRANSITION ELEMENTS. THE ELECTRODE FURTHER CONTAINS NICKEL, COPPER, SILVER, IRON OR CHROME-NICKEL STEEL ALLOYED WITH THE ACTIVE COMPONENT AND COMPRISES A METALLIC SUPPORTING STRUCTURE. A METHOD OF MANUFACTURING THIS ELECTRODE, COMPRISES PREPARING A METAL POWDER CONTAINING THE ACTIVE COMPONENT AND SAID OTHER METAL AND SINTERING SAID POWDER IN HYDROGEN AT 700 TO 1000*C.
摘要:
AN ELECTROCHEMICAL POWER-PRODUCING CELL INCLUDING A MOLTEN LITHIUM METAL ANODE, A MOLTEN SELENIUM METAL CATHODE, A PASTE ELECTROLYTE SEPARATING THE ANODE FROM THE CATHODE, AN ANODE CURRENT COLLECTOR AND A SINGLE LAYER OF NIOBIUM EXPANDED METAL FORMED IN CORRUGATED SHAPE AS CATHODE CURRENT COLLECTOR. IN ADDITION MEANS ARE PROVIDED FOR SEALING THE ANODE AND THE CTHODE FROM LOSS OF LITHIUM AND SELENIUM RESPECTIVELY AND AN INSULATOR IS PROVIDED BETWEEN THE ANODE HOUSING AND THE PASTE ELECTROLYTE DISK.
摘要:
A SEALED NICKEL-ZINC BATTERY SYSTEM IS SHOWN IN WHICH THE CHARGE CAPACITY OF THE POSITIVE NICKEL ELECTRODE SOMEWHAT EXCEEDS THE CHARGE CAPACITY OF THE NEGATIVE ZINC ELECTRODE FOR PREVENTING THE EVOLUTION OF OXYGEN AT THE POSITIVE ELECTRODE DURING CHARGING OF THE BATTERY SYSTEM, THE BATTERY SYSTEM BEING CHARACFTERIZED BY A SHARP CHANGE IN NEGATIVE ELECTRODE POTENTIAL AND SLIGHT EVOLUTION OF HYDROGEN AT THE NEGATIVE ELECTRODE WHEN THE NEGATIVE ELECTRODE IS FULLY CHARGED AND BY SUPPORTING MEMBRANE MEANS FOR VENTING HYDROGEN GAS FROM WITHIN THE BATTERY SYSTEM.