Effect of interconnect coating procedure on solid oxide fuel cell performance

被引：38

作者：

Abdoli, Hamid ^{[1
]}

Molin, Sebastian ^{[2
]}

Farnoush, Hamidreza ^{[3
]}

机构：

[1] Niroo Res Inst, Dept Renewable Energy, POB 1468613113, Tehran, Iran

[2] Gdansk Univ Technol, Fac Elect Telecommun & Informat, Ul G Narutowicza 11-12, PL-80233 Gdansk, Poland

[3] Univ Kashan, Fac Engn, Dept Met & Mat Engn, POB 87317-51167, Kashan, Iran

来源：

MATERIALS LETTERS | 2020年 / 259卷

关键词：

Sintering; Colloidal processing; Electrophoretic deposition; SOFC; Interconnect; Electroceramics; ELECTROPHORETIC DEPOSITION; METALLIC INTERCONNECT; SPINEL COATINGS; MN1.5CO1.5O4; CODEPOSITION;

D O I：

10.1016/j.matlet.2019.126898

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Chromium (Cr) species vaporizing from chromia-forming alloy interconnects is known as a source of degradation in solid oxide fuel cell (SOFC) stacks called "cathode poisoning". (Mn,Co)(3)O-4 spinel coatings offer good protection against Cr evaporation during operation. In this study, Crofer 22 APU steel interconnects were electrophoretically deposited in different mediums to obtain high packing of green coating layer. The optimized sample was then sintered in air-atmosphere or dual-atmospheres (reducing-oxidizing). Anode-supported cells were exposed from cathode side to bare or coated interconnects for 100 h at 800 degrees C. The electrochemical performances of aged cells were compared at 800 degrees C. Due to higher density coating obtained by dual-atmospheres sintering process, the exposed cell showed performance similar to non-poisoned cell (0.95-0.98 W/cm(2)). The cell exposed to air-atmosphere sintered coating interconnect showed lower output power (0.75 W/cm(2)) due to coating lower density. The cell exposed to uncoated interconnect exhibited considerable degradation and the lowest power (0.66 W/cm(2)). (C) 2019 Elsevier B.V. All rights reserved.

引用

页数：4

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