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:
Jun. 18, 1996
Filed:
Sep. 13, 1993
NGK Insulators, Ltd., , JP;
Abstract
A solid oxide fuel cell having an ion conductive solid electrolyte layer formed by a spraying method, wherein a thickness of the solid electrolyte layer is not less then 40 .mu.m and not more than 100 .mu.m, and a leakage amount of N.sub.2 gas of the solid electrolyte layer at room temperature is not more than 10.sup.-5 cc/g.second. A permeation coefficient of the solid electrolyte layer is preferably not more than 10.sup.-7 cm.sup.4 /g.second at room temperature. The solid electrolyte layer includes at least one metal element selected from manganese, iron, cobalt, nickel, copper and zinc, in an average amount of not less than 1 atom % and not more than 15 atom % based on a sum of amounts of all metal elements contained in the solid electrolyte layer.