Abstract: A method for fabricating an electrode for use in lead storage batteries in which an aqueous emulsion of a silicone capable of forming an elastic, porous matrix on breaking of the emulsion, is contacted with a finely divided active electrode material at the stage of preparing an electrode paste, or after formation as an electrode. The contacted material is dried, so that the elastic, porous silicone matrix formed in association with and in intimate contact with the finely divided active electrode material. An aqueous dispersion of fluorocarbon resin can be further added to the paste, or an electrode having a fibrous network of fluorocarbon resin can be applied with the silicone emulsion. Fine particles obtained from the silicone emulsion can also be applied to a finely divided active electrode material.
Type:
Grant
Filed:
July 15, 1982
Date of Patent:
October 22, 1985
Assignee:
Matsushita Electric Industrial Company, Limited
Abstract: A method of forming battery plates or electrodes from tetrabasic lead sulfate includes the step of adding a lead peroxide such as lead dioxide in powdered form to the tetrabasic lead sulfate for making the paste to be applied to the plate or electrode supporting grids. The addition of this lead peroxide allows forming the plates or electrodes in an electrolyte of high specific gravity, and in reduced time, with increased efficiency and reduced energy consumption. Such battery plates or electrodes may thus be formed in their final containers or jars, significantly reducing the practical problems of disposing of used forming electrolyte solution.
Abstract: A paste for coating electrodes for fabricating plates of lead acid batteries containing water, tetrabasic lead sulfate, and an effective amount of a carbonate material such as ammonium carbonate has been found useful in the curing of battery plates or electrodes made with tetrabasic lead sulfate, allowing the curing of such plates or electrodes to be performed without the use of gaseous carbon dioxide.
Abstract: A method of preparing battery electrodes from tetrabasic lead sulfate paste including the steps of adding a carbonate material to the paste, curing the electrodes in a humid atmosphere and forming the electrodes.
Abstract: A process for the fabrication of lead acid batteries containing an acid electrolyte and negative electrodes and positive electrodes, including the steps of coating at least one said electrode with a paste containing tetrabasic lead sulfate and ammonium carbonate mixed with water, curing said electrode in a dry atmosphere, and forming said electrode.
Abstract: An electric accumulator or storage cell whose positive and negative plates are composed of a multiplicity of thin lead plates or lead foils which are spaced apart from thin separators in a receptacle adapted to receive an electrolyte (dilute sulfuric acid), the receptacle having dimensions closely conforming to those of the stacked plates. The thin lead plates or foils which form both the positive and negative electrodes are formed at juxtaposed regions with exactly coextensive electrically nonconducting and electrolyte impermeable masks of a material adhering strongly to the electrodes.
Abstract: Disclosed is a primary electrochemical cell which employs a lithium metal anode, a lead sulfate cathode, and an electrolyte solution comprising a lithium salt in an organic solvent. The cell has an operating voltage and energy density sufficiently close to conventional 1.5 V cells to permit their direct replacement.
Type:
Grant
Filed:
December 26, 1978
Date of Patent:
November 27, 1979
Assignee:
GTE Laboratories Incorporated
Inventors:
Keith A. Klinedinst, Carl R. Schlaikjer