The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 30, 1986
Filed:
Oct. 09, 1984
Alan Hooper, Nr Faringdon, GB;
John M North, Compton, Nr Newbury, GB;
United Kingdom Atomic Energy Authority, London, GB;
Abstract
A unitary polymer electrolyte/polymer-based cathode film component for use in a solid state electrochemical cell is manufactured by solution casting onto one of the electrolyte or cathode, a solution of the other of the electrolyte or cathode. The solution is prepared at elevated temperature (e.g. 40.degree.-50.degree. C.) and cooled to a lower temperature, e.g. ambient, before carrying out the casting. The solvent (e.g. methanol) is such that the polymer (e.g. poly (ethylene oxide)) is only sparingly soluble therein at the lower temperature and relatively readily soluble therein at the elevated temperature. Also, immediate precipitation of the polymer does not occur on cooling the solution from the elevated temperature to the lower temperature. In this way, dissolution of said one of the electrolyte or cathode is avoided.