摘要:
A lithium/fluorinated carbon (Li/CFx) battery having a composite cathode including an electroactive cathode material, a non-electroactive additive, a conductive agent, and a binder. The electroactive cathode material is a single fluorinated carbon having a general formula of CFx, whereby x is an averaged value ranging from about 0.5 to about 1.2. The non-electroactive additive is at least one or a mixture of two or more oxides selected from the group comprising Mg, B, Al, Si, Cu, Zn, Y, Ti, Zr, Fe, Co, or Ni. The conductive agent is selected from the group comprising carbon, metals, and mixtures thereof. Finally, the binder is an amorphous polymer selected from the group comprising fluorinated polymers, ethylene-propylene-diene (EPDM) rubbers, styrene butadiene rubbers (SBR), poly (acrylonitrile-methyl methacrylate), carboxymethyl celluloses (CMC), and polyvinyl alcohol (PVA). Also, a method of reducing the initial voltage drop of a lithium/fluorinated carbon (Li/CFx) battery by providing a composite cathode which includes an electroactive cathode material having a general formula of CFx, whereby x is an averaged value ranging from about 0.5 to about 1.2, a non-electroactive additive, a conductive agent, and a binder.
摘要:
An electrode for a rechargeable lithium-ion battery is formed by mixing stanous oxide (SnO) and lithium nitride (Li3N) in a stoichiometric ratio of 2 moles of Li3N to 3 moles of SnO to form a mixture, milling the mixture to obtain a milled powder, and processing the milled powder in accordance with an electrode-forming technique. The electrode forming technique can be any one of die pressing, spraying, doctor-blading and rolling. Conductive additives, such as carbon and binders (PVDF, cellulose and Teflon), can be introduced during the processing step. Preferably, the method is carried out in a dry, inert atmosphere of argon or helium. As a result of the invention, a smaller, lighter and more efficient lithium-ion battery is produced.
摘要:
An improved nonaqueous electrolyte and electrochemical cell containing same, wherein the electrolyte is comprised of a salt complexed by a tertiary amine and an aromatic organic solvent, the improvement being the addition of a solvent having a dielectric constant greater than 20 which provides an electrolyte having a conductivity sufficient to support current densities greater than 1 mA/cm.sub.2.
摘要:
A multilayer separator is provided for insertion between the cathode and de in lithium secondary or primary batteries, the separator including porous membrane and an electroactive polymeric material contained within the separator layers wherein the polymer is one that will react with any lithium dendrite that could penetrate the separator thus preventing an internal short circuit of the cell.
摘要:
A lithium/oxygen battery includes a lithium anode, an air cathode, and a non-aqueous electrolyte soaked in a microporous separator membrane, wherein non-aqueous electrolyte comprises a lithium salt with a general molecular formula of LiBF3X (X═F, Cl, or Br, respectively) and a non-aqueous solvent mixture.
摘要:
A lithium carbon monofluoride-oxygen battery is provided that includes a lithium metal-containing electroactive anode; an electroactive cathode formed of a carbon monofluoride compound; an electrolyte solution formed of an organic solvent and a lithium salt; a casing surrounding the anode, the cathode, and the electrolyte solution; and a port bored through the casing wherein the port selectively allows the flow of gas into the casing. In addition, a method of using an electrochemical battery is provided that includes providing a lithium carbon monofluoride-oxygen battery; closing the valve of the electrochemical battery to block the flow of gas into the battery; discharging the electrochemical battery after closing the valve of the battery; opening the valve of the electrochemical battery after discharging the electrochemical battery to expose the cathode to the flow of oxygen containing gas; and discharging the electrochemical battery after opening the valve of the electrochemical battery.
摘要:
A lithium ion rechargeable intercallation cell is provided including a liated graphite anode, a lithiated oxide cathode, and a solution of a lithium salt in a solvent that cycles both the lithiated graphite anode and the lithiated oxide cathode as the electrolyte.
摘要:
A novel inorganic non-aqueous electrochemical cell having an alkali or alkaline earth metal anode, an inorganic electrolyte comprised of an SO.sub.2 solvent with an alkali or alkaline earth metal halide salt of aluminum, tantalum niobium or antimony, dissolved in the SO.sub.2 and a cathode comprised of a carbonaceous material having an apparent bulk density in excess of 5 lb/ft.sup.3 (80 gm/l). Lower bulk density carbonaceous material may, however, be used in electrolytes having high salt concentrations. Ketjenblack EC (furnace black) carbonaceous material may be admixed with a solid cathode active material which is substantially insoluble in the SO.sub.2 electrolyte to provide a high primary cell capacity and an effectively rechargeable cell. There is no SO.sub.2 per se discharge in the cell.
摘要:
A lithium/fluorinated carbon (Li/CFx) battery having a composite cathode including an electroactive cathode material, a non-electroactive additive, a conductive agent, and a binder. The electroactive cathode material is a single fluorinated carbon having a general formula of CFx, whereby x is an averaged value ranging from about 0.5 to about 1.2. The non-electroactive additive is at least one or a mixture of two or more oxides selected from the group comprising Mg, B, Al, Si, Cu, Zn, Y, Ti, Zr, Fe, Co, or Ni. The conductive agent is selected from the group comprising carbon, metals, and mixtures thereof. Finally, the binder is an amorphous polymer selected from the group comprising fluorinated polymers, ethylene-propylene-diene (EPDM) rubbers, styrene butadiene rubbers (SBR), poly (acrylonitrile-methyl methacrylate), carboxymethyl celluloses (CMC), and polyvinyl alcohol (PVA). Also, a method of reducing the initial voltage drop of a lithium/fluorinated carbon (Li/CFx) battery by providing a composite cathode which includes an electroactive cathode material having a general formula of CFx, whereby x is an averaged value ranging from about 0.5 to about 1.2, a non-electroactive additive, a conductive agent, and a binder.
摘要:
A lithium carbon monofluoride-oxygen battery is provided that includes a lithium metal-containing electroactive anode; an electroactive cathode formed of a carbon monofluoride compound; an electrolyte solution formed of an organic solvent and a lithium salt; a casing surrounding the anode, the cathode, and the electrolyte solution; and a port bored through the casing wherein the port selectively allows the flow of gas into the casing. In addition, a method of using an electrochemical battery is provided that includes providing a lithium carbon monofluoride-oxygen battery; closing the valve of the electrochemical battery to block the flow of gas into the battery; discharging the electrochemical battery after closing the valve of the battery; opening the valve of the electrochemical battery after discharging the electrochemical battery to expose the cathode to the flow of oxygen containing gas; and discharging the electrochemical battery after opening the valve of the electrochemical battery.