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Author:

Yang, Tao (Yang, Tao.) | Li, Fan (Li, Fan.) (Scholars:李钒) | Xia, Dingguo (Xia, Dingguo.)

Indexed by:

EI Scopus SCIE

Abstract:

A composite Au@Bi2Cu0.1V0.9O5.35 (BICUVOX10) cathode is prepared and tested as a ceramal electrode for use in low-temperature solid-oxide fuel cells (SOFCs). Au powder is coated onto the surface of BICUVOX10 from an aqueous solution of the chloride with NaBH4 as a reductant. The valence of the surface Au is identified as Au(0) by X-ray photoelectron spectroscopy (XPS). The BICUVOX10 substrate is synthesized from V2O3, CuO, and Bi2O3 and then investigated by field-emission scanning electron microscopy (SEM). The average size of the particles is estimated to be 100 nm after milling with a planetary ball-mill. The core-shell structure of Au@BICUVOX10 is confirmed by transmission electron microscopy (TEM). The two-dimensional coefficient of thermal expansion (CTE) and the conductivities of mixed powders with different proportions of Au is also tested from room temperature to 600 degrees C. A single fuel cell is fabricated with Au@BICUVOX10 as the cathode, NiO/GDC (Gd0.1Ce0.9O1.95) as the supporting anode, and GDC as the electrolyte. The electrochemical performance is tested and the highest power densities of the fuel cell are determined to be 127, 206, 359, 469, and 474 mW cm(-2) at 450, 500, 525, 550, and 575 degrees C, respectively. Finally, the stability of the single SOFC is tested, whereupon it is found that its output is maintained for at least the first 20 h. (C) 2009 Elsevier B.V. All rights reserved.

Keyword:

Low-temperature SOFC Au nanoparticles BICUVOX10 Cathode Core-shell structure

Author Community:

  • [ 1 ] [Yang, Tao]Beijing Univ Technol BJUT CEEE, Coll Environm & Energy Engn, Beijing 100022, Peoples R China
  • [ 2 ] [Li, Fan]Beijing Univ Technol BJUT CEEE, Coll Environm & Energy Engn, Beijing 100022, Peoples R China
  • [ 3 ] [Xia, Dingguo]Beijing Univ Technol BJUT CEEE, Coll Environm & Energy Engn, Beijing 100022, Peoples R China

Reprint Author's Address:

  • 夏定国

    [Xia, Dingguo]Beijing Univ Technol BJUT CEEE, Coll Environm & Energy Engn, Beijing 100022, Peoples R China

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Source :

JOURNAL OF POWER SOURCES

ISSN: 0378-7753

Year: 2010

Issue: 9

Volume: 195

Page: 2514-2519

9 . 2 0 0

JCR@2022

ESI Discipline: ENGINEERING;

JCR Journal Grade:1

CAS Journal Grade:1

Cited Count:

WoS CC Cited Count: 7

SCOPUS Cited Count: 7

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 7

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