Preparation method of ordered solid oxide membrane electrode

Abstract

The invention belongs to the technical field of an electrode preparation method, and in particular relates to a preparation method of an ordered solid oxide membrane electrode. In the method, a supporter array solid oxide bar of a catalyst can be prepared by a template method, and can be roasted and integrally fused with a compact solid oxide electrolyte membrane. The highly ordered array solid oxide bar defines the electrode void ratio and the catalyst surface size in the ordered solid oxide membrane electrode, so as to realize the controllable preparation of the ordered electrode. An anode catalyst and a cathode catalyst are prepared respectively on the array solid oxide bar, the catalysts are combined on the surface of the solid oxide bar in a nano- or micro-particle state to form a catalysis layer, the catalyst particles are communicated with each other and are connected to a collector, and the catalyst particles are dispersed highly and have higher specific surface area and catalysis activity, therefore, the three-phase reaction interface of an SOFC (solid oxide fuel cell) and an SOEC (solid oxide electrolysis cells) is increased greatly, the polarization resistance of the electrode is reduced, and consequently, the reaction rate of the fuel and the raw material gas reducing transforming rate are improved.

Description

technical field [0001] The invention belongs to the technical field of electrode preparation methods, in particular to a method for preparing ordered solid oxide film electrodes. Background technique [0002] Solid Oxide Fuel Cell (SOFC for short) or Solid Oxide Electrolysis Cell (SOEC for short) has the advantages of high operating temperature (600-1000°C), no need for precious metal catalysts, and all-solid structure. , is an efficient energy conversion device. The basic composition of SOFC is similar to that of SOEC. The core component, the solid oxide membrane electrode, is composed of a dense solid oxide electrolyte membrane and porous electrodes on both sides. Its structure can be divided into electrode support (including anode support or cathode support), electrolyte support and connection There are three types of body supports. SOFC is a power generation device that directly converts chemical energy into electrical energy. Its working principle is: continuously fee...

AI Technical Summary

Problems solved by technology

The porous composite ceramic electrode structure and the interface formed with the electrolyte not only reduce the electrochemical performance (energy loss is mainly manifested as concentration polarization and activation polarization), but also seriously affect the long-term stability and life

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