Abstract: The cadmium negative electrode has a structure serving as a collector and made of nickel foam. The sponge is filled with a mixture cons mainly of cadmium oxide and contains nickel sulphate hexahydrate in the proportion of 1.8 to 2.7% by weight of the total mixture, expressed in the form of nickel.

Abstract: A plasticized cadmium oxide electrode for an electrochemical generator and more specifically for a storage battery is formed by pasting a reticulated open-porosity matrix, a plasticizing agent being associated with cadmium oxide in the paste employed. This electrode has high capacity and offers outstanding stability during cycling.

Abstract: The cadmium negative electrode has a structure serving as a collector and made of nickel foam. The sponge is filled with a mixture consisting mainly of cadmium oxide and contains nickel sulphate in the proportion of 1.8 to 2.7% by weight of the total mixture, expressed in the form of nickel.

Abstract: Method and apparatus for pasting a porous structure, such as a battery support plate, which provides for inserting pasty material from a vibrating hopper continuously and evenly as a sandwich filling of controlled thickness between two conveyer strips driven at the same speed to deliver pasty material with a predefined thickness and with a flat translational motion onto a substantially horizontal platen; removing the conveyor strip opposite that in contact with the platen to uncover the upper face of the pasty material; bringing the porous structure level with the platen onto the upper surface of the pasty material; pressing the pasty material into the porous structure; and removing the pasted porous structure from the lower strip. The porous structure can be simultaneously pasted on its upper side using a secondary conveyer strip.

Abstract: The invention relates to a structure of a positive electrode possessing improved electrical capacity and intended for electrochemical generators working with a liquid electrolyte. It comprises, on the one hand, a metallic collector of high porosity, in particular of the non-woven fibrous type or of the isotropic, cross-linked type of open porosity and, on the other hand, a nickel hydroxide-based active material filling in part the pores of the collector and containing cobalt. This structure is characterized by a heterogeneous dispersion of the cobalt within the active material.

Abstract: A method of fabrication of porous metal structures as applicable to the manufacture of supports for electrodes, catalysts, filters or sound insulators. A porous structure is fabricated from a support consisting of a felt, a woven or reticulated structure in accordance with the following steps:(a) initial metallization of the support;(b) chemical and/or electrochemical metallization if so required;(c) removal of the support if necessary.The distinctive feature of the invention lies in the fact that the initial metallization step consists of metallization in vacuum.

Abstract: This invention relates to a process for charging a reversible electrochemical generator consisting of a plurality of cells, which are electrically in series, comprising a zinc negative electrode and a positive electrode between which a basic electrolyte, containing solubilized zinc, circulates, consisting in making the electrolyte in the cells circulate successively from one cell to the next and in applying to it a charging current forming a succession of approximately rectangular pulses. The direction of circulation of the electrolyte during charging is periodically reversed.

Abstract: A process for producing electric current by the electrochemical oxidation of an active anodic metal dispersed in an alkaline electrolyte.The electrolyte is circulated into contact with a second metal which is more electronegative than the active metal. A displacement reaction precipitates the active metal from its soluble oxidation products. There is obtained as a result a repeated recovery for reuse of the active metal (zinc) with the aid of the more electronegative metal (aluminium) which then supplies the energy for the production of current and is oxidized to form soluble products.The process is exemplified by zinc as the active metal and aluminium and magnesium as the strongly electronegative metals.