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author:

Qin Guo-Heng (Qin Guo-Heng.) [1] | Huang Xiao-Wei (Huang Xiao-Wei.) [2] (Scholars:黄晓巍) | Hu Zhi (Hu Zhi.) [3]

Indexed by:

Scopus SCIE PKU CSCD

Abstract:

Powders of La0.90Sr0.10Al0.97Mg0.03O3-delta (LSAM) were synthesized by the glycine-nitrate process, and then sintered at 1500 degrees C for 5 h. Impedance spectroscopy at 900 degrees C in air revealed that the conductivity of LSAM was 1.11x10(-2) S.cm(-1). The chemical compatibility of LSAM with anode materials NiO-Ce0.9Gd0.1O1.95 (Ni-GDC), Sr0.88Y0.08TiO3 (SYT) and La0.75Sr0.25Cr0.5Mn0.5O3 (LSCM) was characterized by X-ray diffraction, scanning electron microscopy with energy-dispersive X-ray spectroscopy and AC impedance spectroscopy. The results indicated that SYT and LSCM had poor chemical compatibility with LSAM because Sr2+, Ti4+, Mn3+, and Cr3+ diffused readily into the LSAM lattice. The interdiffusion of cations between LSAM and Ni-GDC at 1300 degrees C was limited, implying excellent chemical compatibility. The electrochemical performance of symmetrical cells of the anode materials was measured under hydrogen atmosphere. The area-specific polarization resistance of Ni-GDC was 5.12 Omega.cm(2) at 800 degrees C. An open-circuit voltage of 0.925 V and a power density of 19.5 mW cm(-2) were obtained at 800 degrees C for a 550 mu m thick LSAM electrolyte-supported single cell (Ni-GDC/GDC/LSAM/GDC/La0.75Sr0.25FeO3).

Keyword:

Area-specific polarisation resistance Chemical compatibility LaAlO3-based electrolyte Solid oxide fuel cell

Community:

  • [ 1 ] [Qin Guo-Heng]Fuzhou Univ, Coll Mat Sci & Engn, Fuzhou 350108, Peoples R China
  • [ 2 ] [Huang Xiao-Wei]Fuzhou Univ, Coll Mat Sci & Engn, Fuzhou 350108, Peoples R China
  • [ 3 ] [Hu Zhi]Fuzhou Univ, Coll Mat Sci & Engn, Fuzhou 350108, Peoples R China

Reprint 's Address:

  • 黄晓巍

    [Huang Xiao-Wei]Fuzhou Univ, Coll Mat Sci & Engn, Fuzhou 350108, Peoples R China

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Source :

ACTA PHYSICO-CHIMICA SINICA

ISSN: 1000-6818

CN: 11-1892/O6

Year: 2013

Issue: 2

Volume: 29

Page: 311-318

0 . 8 8 6

JCR@2013

1 0 . 8 0 0

JCR@2023

ESI Discipline: CHEMISTRY;

JCR Journal Grade:4

CAS Journal Grade:4

Cited Count:

WoS CC Cited Count: 3

SCOPUS Cited Count: 3

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 1

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