US 2017/0317371 A1 · CELL STRUCTURE, METHOD FOR MANUFACTURING THE SAME, AND FUEL CELL

Abstract

A cell structure includes a cathode, an anode, and a protonically conductive solid electrolyte layer between the cathode and the anode. The solid electrolyte layer contains a compound having a perovskite structure and containing zirconium, cerium, and a rare-earth element other than cerium. If the solid electrolyte layer has a thickness of T, the elemental ratio of zirconium to cerium at a position 0.25 T from a surface of the solid electrolyte layer opposite the cathode, ZrC/CeC, and the elemental ratio of zirconium to cerium at a position 0.25 T from a surface of the solid electrolyte layer opposite the anode, ZrA/CeA, satisfy ZrC/CeC>ZrA/CeA, and ZrC/CeC>1.

Claims5

Dependent claims

A cell structure comprising:

a cathode;
an anode;
and
a protonically conductive solid electrolyte layer between the cathode and the anode, wherein
the solid electrolyte layer comprises a compound having a perovskite structure and containing zirconium, cerium, and a rare-earth element other than cerium, and
if the solid electrolyte layer has a thickness of T,
the elemental ratio of zirconium to cerium at a position 0.25 T from a surface of the solid electrolyte layer opposite the cathode, ZrC/CeC, and the elemental ratio of zirconium to cerium at a position 0.25 T from a surface of the solid electrolyte layer opposite the anode, ZrA/CeA, satisfy ZrC/CeC>ZrA/CeA, and ZrC/CeC>1.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application

15/525,104Filed 20 Oct 2015

Priority

JP 2014-23062513 Nov 2014

Published

2 Nov 2017

Term ends

Not estimatedThe source records don’t support an estimate.

Classification14 codes

H01M 8/1253
The electrolyte consisting of oxides: the electrolyte containing zirconium oxide
H01M 4/9033
Oxides specially used in fuel cell operating at high temperature, e.g. SOFC: complex oxides, optionally doped, of the type M1MeO3, M1 being an…
H01M 8/02
Fuel cells; Manufacture thereof: details
H01M 8/04201
Arrangements for control of reactant parameters, e.g. pressure or concentration: reactant storage and supply, e.g. means for feeding, pipes

Cell structure, method for manufacturing the same, and fuel cell

Life of this patent

Cell structure, method for manufacturing the same, and fuel cell

Life of this patent

Abstract

Claims5