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Ordered solid oxide membrane electrode

A solid oxide and membrane electrode technology, applied in battery electrodes, circuits, fuel cells, etc., can solve problems affecting long-term stability and life, and reducing electrochemical performance

Active Publication Date: 2014-01-15
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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

Method used

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Embodiment Construction

[0023] The present invention provides an ordered solid oxide membrane electrode. The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0024] This embodiment provides an ordered solid oxide membrane electrode 4, the ordered solid oxide membrane electrode 4 is composed of an ion conductor 2, an anode 31 and a cathode 32; the ion conductor 2 is composed of a solid oxide electrolyte membrane 21 and a plurality of solid oxide rods 22 arranged on both sides of the surface; the anode 31 is composed of multiple solid oxide rods 22 arranged on the surface of the solid oxide electrolyte membrane A plurality of anode catalyst particles are closely connected, and the cathode 32 is composed of a plurality of cathode catalyst particles closely connected on the surface of a plurality of solid oxide rods 22 arranged on the surface of the other side of the solid oxide electrolyte membrane 21 .

[0025] The solid oxide r...

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Abstract

The invention belongs to the technical field of membrane electrodes, and specially relates to an ordered solid oxide membrane electrode. The support of catalysts in the ordered solid oxide membrane electrode is array solid oxide rods. The highly-ordered array solid oxide rods are capable of deciding the electrode voidage and the catalyst surface area in the ordered solid oxide membrane electrode, so that the controllable preparation on the ordered electrode is realized. The particles of anode catalysts and cathode catalyst are interpenetrated, are connected with a current collector and are highly dispersed, and the catalysts have relatively high specific surface area and catalytic activity, so that the three-phase reaction interface of SOFC and SOEC are substantially increased, the polarization resistance of the electrode is reduced, and the reaction rate of fuel and the reduction conversion rate of a raw material gas are improved. The ordered membrane electrode is expected to substantially reduce polarization electromotive force of the electrode, improve conversion efficiency and stability, and prolong operation life.

Description

technical field [0001] The invention belongs to the technical field of membrane electrodes, in particular to an ordered solid oxide membrane electrode. 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 feed fuel gas (such as hydroge...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/02H01M8/1213
CPCH01M4/8605H01M4/8889H01M4/9075H01M8/1004Y02E60/50
Inventor 王诚陈光颖刘同乐王建龙毛宗强
Owner TSINGHUA UNIV
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