A process and a device for producing anhydrous alkali sulfide, wherein an alkali sulfide solution, alkali sulfide suspension, alkali sulfide dispersion or alkali water of crystallization melt is dried by spray drying with inert drying gas loaded with water vapor.

 
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< Production of tetrabasic lead sulfate from solid state reactions for the preparation of active plates to be used in lead-acid batteries

< Method of joining ITM materials using a partially or fully-transient liquid phase

> Secondary battery cathode active material, secondary battery cathode and secondary battery using the same

> Supported catalysts having a controlled coordination structure and methods for preparing such catalysts
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