1. A method of forming a photosensitive layer of lead sulfide crystals which comprises precipitating the crystals onto a seeded glass support by adding a solution of allyl-thiourea to an alkaline solution of a copper nitrate and a lead nitrate having a concentration of copper between 5 .times. 10.sup..sup.-5 and 5 .times. 10.sup..sup.-4 molar, a concentration of lead between 0.05 and 0.06 molar, and a concentration of hydroxide between 0.55 and 0.75 molar and immersing said seeded glass support ...

Electrochemical cells having an oxidizable anode material, such as lithium, a cathode material, such as carbon or (C.sub.4 F).sub.n, upon the surface of which the solvent material is electrochemically reduced during operation of the cell, and an electrolytic solution comprising an inorganic solvent and a solute dissolved therein. The electrolytic solution further contains an additive such as sulfur monochloride (S.sub.2 Cl.sub.2), which is capable of dissolving any sulfur generated during operat...

In this fuel cell formed of a stack of electrodes, each electrode is provided, on one of its faces, with protrusions or ribs of limited height which contact the opposite face of an adjacent electrode of the stack.

A process for the electrodeposition of metal onto the particles of a fluidised bed cathode is of particular use in the electro-winning of metals. Agglomeration of particles is substantially avoided by the elimination of sharp corners within the portion of the cell where there is electrodeposition and by the removal of particles from the fluidised bed cathode before they reach a size where they tend to lodge adjacent structural surfaces within the cathode compartment. Flow of electrolyte into the...

This invention relates to a method of manufacturing heat cells which are based on a specific iron oxidation chemistry and having specific physical dimensions and fill characteristics. This method uses direct compaction of powdered ingredients into granules, pellets, tablets, slugs, and/or the like. These heat cells, which can be incorporated into disposable body wraps, provide a controlled and sustained temperature for consistent, convenient, and comfortable heat application for treating tempora...

Novel vertical multiunit electrolyzers with bipolar metallic electrodes for the electrolysis of halide containing electrolytes to produce oxidized halogen compounds and to a novel electrolysis of electrolytes which is designed to produce a gas lift effect to sweep solid deposits off the electrodes and out of the electrolyzer.

In a primary-cell of the type in which a cathode or anode increases its apparent volume as the discharge proceeds, thereby absorbing the electrolyte, at least between a cell enclosure which serves as one of the terminals of the primary-cell or top closure and the cathode or anode electrically connected thereto is interposed a spacer which contains electrolyte, is electrically conductive and reduces its apparent volume when the pressure is applied thereto, thereby squeezing the electrolyte out of...

A current collecting pole associated with an alkali metal-sulphur cell comprises a first layer of an electronically conducting material which is resistant to the corrosive action of sulphur and alkali metal polysulphides (e.g. carbon or graphite) and which defines a continuous surface in contact with the sulphur and alkali metal polysulphides and a second layer of a higher electronically conducting material which is in electrical contact with the first layer over the surface of the latter remote...

A lithium/chalcogen thermal cell having a ceramic electrolyte and a lithium ion-containing salt intermediate the anode and the electrolyte. The chalcogen is preferably selenium or sulphur and the ceramic electrolyte is preferably .beta.alumina, or .beta."alumina, or Li.sub.4 SiO.sub.4, or Li.sub.4 TiO.sub.4. Contact between the anode and the electrolyte is prevented by the intermediate salt and the ceramic electrolyte prevents self discharge of the cell resulting from dissolution of the electrod...

In an electric cell having a solid electrolyte and employing sodium as the iquid anode and sulphur as the liquid cathode, the liquid anode is contained in two compartments separated by a corrosion resistant barrier. Liquid anode is arranged to flow between the compartments through a flow restrictor which permits a rate of flow sufficient to meet the normal charge and discharge requirements of the cell but limits higher rates of flow. One of the compartments has a very limited capacity for liquid...