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author:

Huang, Jiongyuan (Huang, Jiongyuan.) [1] | Xie, Zhikun (Xie, Zhikun.) [2] | Ai, Na (Ai, Na.) [3] | Wang, Cheng Cheng (Wang, Cheng Cheng.) [4] | Jiang, San Ping (Jiang, San Ping.) [5] | Wang, Xin (Wang, Xin.) [6] | Shao, Yanqun (Shao, Yanqun.) [7] | Chen, Kongfa (Chen, Kongfa.) [8]

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EI

Abstract:

The electrocatalytic activity of oxygen reduction reaction on the cathodes of solid oxide fuel cells tends to be severely degraded due to the Cr poisoning effect ascribed to the use of a Fe-Cr alloy interconnect. Here, a hybrid catalyst coating consisting of BaCe0.8Gd0.2O3-δ and BaCO3 is developed on (La0.8Sr0.2)0.95MnO3+δ (LSM) cathodes to enhance the electrocatalytic performance and chromium tolerance. The hybrid catalyst coated LSM cell shows an excellent peak power density of 1.31 W cm−2 at 750 °C, dramatically higher than 0.22 W cm−2 of bare LSM cell. The hybrid catalyst coating also significantly enhances the operational stability of LSM cathodes under accelerated chromium poisoning conditions. The hybrid catalyst coating on the outermost electrode surface preferentially reacts with the Cr2O3 scale layer on the Fe-Cr interconnect to form conductive BaCrO4, and meanwhile the hybrid catalyst coating inside the electrode is inert to the gaseous Cr species, leading to remarkable Cr tolerance of the cathode. This work sheds light on the rational design of an efficient and durable LSM based cathode for solid oxide fuel cells. © 2021 Elsevier B.V.

Keyword:

Barium compounds Binary alloys Catalyst poisoning Cathodes Chromium alloys Coatings Electrolytic reduction Gas fuel purification Iron alloys Lanthanum compounds Manganese alloys Solid oxide fuel cells (SOFC)

Community:

  • [ 1 ] [Huang, Jiongyuan]College of Materials Science and Engineering, Fuzhou University, Fuzhou; Fujian; 350108, China
  • [ 2 ] [Xie, Zhikun]College of Materials Science and Engineering, Fuzhou University, Fuzhou; Fujian; 350108, China
  • [ 3 ] [Ai, Na]Fujian College Association Instrumental Analysis Center, Fuzhou University, Fuzhou; Fujian; 350108, China
  • [ 4 ] [Wang, Cheng Cheng]Shenzhen Polytechnic, Shenzhen; 518055, China
  • [ 5 ] [Jiang, San Ping]WA School of Mines: Minerals, Energy and Chemical Engineering, Curtin University, Perth; WA; 6102, Australia
  • [ 6 ] [Wang, Xin]College of Materials Science and Engineering, Fuzhou University, Fuzhou; Fujian; 350108, China
  • [ 7 ] [Shao, Yanqun]College of Materials Science and Engineering, Fuzhou University, Fuzhou; Fujian; 350108, China
  • [ 8 ] [Chen, Kongfa]College of Materials Science and Engineering, Fuzhou University, Fuzhou; Fujian; 350108, China

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Source :

Chemical Engineering Journal

ISSN: 1385-8947

Year: 2022

Volume: 431

1 5 . 1

JCR@2022

1 3 . 4 0 0

JCR@2023

ESI HC Threshold:66

JCR Journal Grade:1

CAS Journal Grade:1

Cited Count:

WoS CC Cited Count: 0

SCOPUS Cited Count: 13

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 0

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