Method of preparing a membrane consisting of polyantimonic acid powder and an organic binder

• US 4,253,936 A
• Filed: 03/13/1980
• Issued: 03/03/1981
• Est. Priority Date: 03/20/1979
• Status: Expired due to Term

• Current Assignee: Studiecentrum Voor Kernenergie
• Original Assignee: Studiecentrum Voor Kernenergie
• Inventors: Baetsle, Leon H. J. M., Vermeiren, Philippe, Leysen, Roger F. R., Spaepen, Gustaaf J. F., Vandenborre, Jan-Baptist H.
• Primary Examiner(s): Edmundson, F. C.
• Application Number:
  US06/130,131
• Time in Patent Office: 355 Days
• Field of Search: 204/295, 204/296, 260/37 R
• US Class Current: 204/296
• CPC Class Codes: C25B 13/04 characterised by the material
• CPC Class Codes: H01M 2300/0014 Alkaline electrolytes
• CPC Class Codes: H01M 50/431 Inorganic material
• CPC Class Codes: H01M 50/489 Separators, membranes, diaphragms or spacing elements inside the cells, characterised by their physical properties, e.g. swelling degree, hydrophilicity or shut down properties
• CPC Class Codes: H01M 8/0289 Means for holding the electrolyte solid polymer electrolytes H01M8/1018
• CPC Class Codes: Y02E 60/10 Energy storage using batteries
• CPC Class Codes: Y02E 60/50 Fuel cells

Abstract

The method comprises the steps of preparing a solution of a binder in a solvent, wetting and grinding polyantimonic powder, forming a suspension with the wetted and ground powder and the solvent, mixing the suspension with the solution, pouring on a plate the so obtained viscous liquid, allowing the solvent to evaporate until a membrane in formation begins to dry, removing further the solvent by lixiviation, and removing the membrane from the plate.

Claims

1. A method of preparing a membrane consisting of polyantimonic acid powder and an organic binder, comprising the steps of

preparing a solution of the binder in a solvent,

wetting the polyantimonic powder with the same solvent,

grinding the wetted powder,

forming a suspension with the wetted and ground powder and a same solvent,

mixing the suspension with the solution,

pouring on a plate the so obtained viscous liquid,

allowing the solvent to evaporate until a membrane in process of formation begins to dry,

removing further the solvent by lixiviation, and

removing the membrane from the plate.

2. The method of claim 1, in which the binder is polysulfone.

3. The method of claim 1, in which the solvent is methylpyrolidone.