ELECTRODE OF FINE STRUCTURE HAVING TRIPLE PHASE BOUNDARY EXPANDED BY POROUS ION CONDUCTING CERIA FILM COATING, AND METHOD FOR PRODUCING THE SAME

摘要

PURPOSE: Provided are an electrode which overcomes an interconnection cut-off problem, and has a substantially expanded triple phase boundary and thus shows improved capability, and a method for producing the same. CONSTITUTION: In the electrode which has fine structure having triple phase boundary expanded by coating an electrode of solid oxide fuel cell, sensor, or solid device with porous oxygen ion conducting ceramic ceria, an electron conducting or electron/ion conducting material form a coated film around an electrode and an electrolyte; an ion conduction pathway short-circuited from the electrolyte surface is not presented on the coated film, and the coated film forms a gas-permeable pore or micropore on the coated film or electrode/coating film interface so as to provide triple phase boundary.