摘要:
Disclosed are hyper-dendritic nanoporous zinc foam electrodes, viz., anodes, methods of producing the same, and methods for their use in electrochemical cells, especially in rechargeable electrical batteries.
摘要:
A method for producing a secondary cell according to the present invention includes step (A) of putting a solution having an electrochemically reversibly oxidizable/reducible organic compound and a supporting electrolyte dissolved therein into contact with a positive electrode active material, thereby oxidizing or reducing the positive electrode active material; and step (B) of accommodating the oxidized positive electrode active material and a negative electrode active material in a case in the state of facing each other with a separator being placed therebetween, and filling the case with an electrolyte solution. By oxidizing or reducing the positive electrode active material, lithium ions or anions as the support electrode are incorporated into the positive electrode active material.
摘要:
Embodiments of the present invention generally relate to lithium-ion batteries, and more specifically, to a system and method for fabricating such batteries using thin-film processes that form three-dimensional structures. In one embodiment, an anodic structure used to form an energy storage device is provided. The anodic structure comprises a flexible conductive substrate, a plurality of conductive microstructures formed on the conductive substrate, comprising a plurality of columnar projections and dendritic structures formed over the plurality of columnar projections and a plurality of tin particles formed on the plurality of conductive microstructures. In another embodiment, the anodic structure further comprises a tin nucleation layer comprising tin particles formed on the flexible conductive substrate between the flexible conductive substrate and the plurality of conductive microstructures.
摘要:
The invention provides materials capable of giving electrodes having the smaller rate of the capacity loss due to an irreversible capacity in the initial cycle in the charge and discharge cycle test as compared with electrodes comprising conventional materials; and a process for the production thereof. A carbon composite material comprising a carbon material and a metal oxide coating on the surface of the carbon material, wherein the metal oxide is an Fe-containing metal oxide; a carbon composite material, wherein the above-described carbon material is mesoporous carbon; a carbon composite material, wherein the above-described Fe-containing metal oxide is Fe2O3; and a process for the production of the carbon composite material comprising the steps (a) and (b): (a) the step of obtaining an Fe-coated carbon material by coating a surface of a carbon material with Fe by an electrolysis using an anode, a cathode with a carbon material disposed on the surface thereof, and an electrolytic solution comprising an aqueous solution containing Fe; and (b) the step of heating the Fe-coated carbon material in an oxygen-containing atmosphere.
摘要:
A method for producing an electrode having immobilized π-conjugated ligands is provided. The method includes bringing an aqueous solution into contact with an electrically conductive base material, the aqueous solution including π-conjugated ligands and at least one of (i) a surfactant, and (ii) a water-soluble molecule having a structure different from that of the π-conjugated ligands, the water-soluble molecule having a π-conjugated structure, and immobilizing the π-conjugated ligands on the base material.
摘要:
Disclosed are a gas diffusion electrode for an electrochemical cell which comprises a catalyst layer formed by binding, by means of poiytotrafluoroethylene, catalyst-supporting carbon black and catalyst-non-supporting carbon black having a fluorinated polyolofine film on substantially whole surface, the catalyst layer being integrated on a substrate, and a process of preparing same. Since the carbon black employed for the formation of the gas network in the catalyst layer of the gas diffusion electrode having the above constitution in accordance with the present invention is completely hydrophobically treated, no electrolyte permeates this portion and the carbon black exhibits high hydrophobicity so that the wet-proofing is maintained even after the long operation period to enable the gas supply to the catalyst particles so as to provide the gas diffusion electrode with a long life and high electrode performances.
摘要:
The subject invention relates to electrode structures that are adaptable for primary and electrically rechargeable electrochemical wafer cells. A flat wafer cell is disclosed that includes conductive, carbon-filled polymeric outer layers that serve as electrode contacts and as a means of containment of the cell. Multi-cell, higher voltage batteries may be constructed by stacking individual cells. Specially formulated electrodes and processing techniques that are compatible with the wafer cell construction are disclosed for a nickel-metal hydride battery system. This invention is further directed to fabrication of electrodes from electrochemically active material prepared by coating non- to low-conductive particles of a metal hydroxide or metal oxide powder with nickel using a electroless nickel coating process. The cell design and electrode formulations provide for individual operation of a vented or low pressure sealed cell and/or for operation of these cells in a stacked array in an outer battery housing.
摘要:
The subject invention relates to electrode structures that are adaptable for primary and electrically rechargeable electrochemical wafer cells. A flat wafer cell is disclosed that includes conductive, carbon-filled polymeric outer layers that serve as electrode contacts and as a means of containment of the cell. Multi-cell, higher voltage batteries may be constructed by stacking individual cells. Specially formulated electrodes and processing techniques that are compatible with the wafer cell construction are disclosed for a nickel-metal hydride battery system. The cell design and electrode formulations provide for individual operation of a vented or low pressure sealed cell and/or for operation of these cells in a stacked array in an outer battery housing.
摘要:
A process is described for electrolytically producing nickel electrodes by subjecting a porous nickel structure (generally a nickel plaque) to alternating anodic and cathodic pulses in an aqueous halide (generally chloride) solution. The alternating pulses first anodically dissolve the nickel from the porous nickel plaque and then cathodically precipitate the nickel in the form of the hydroxide. Particularly attractive is the use of a stable, simple solution, room temperature operation and the broad variation in operating conditions (pH, etc.) that still produce optimum results.