Optimization of sintering temperature for SOFCs by a co-firing method

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal

5 Scopus Citations
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Author(s)

  • Qinfang Zhang
  • Lei Bi

Detail(s)

Original languageEnglish
Pages (from-to)6987-6990
Journal / PublicationCeramics International
Volume46
Issue number5
Online published16 Nov 2019
Publication statusPublished - 1 Apr 2020

Abstract

A single-step co-firing process is employed to fabricate solid oxide fuel cells (SOFCs) with an Sm-doped CeO2 (SDC) electrolyte, aiming to simplify the SOFC fabrication procedure. Complete tri layer green cells are co-fired in a single step at different fabrication temperatures, and the co-firing temperature significantly influences the cell microstructure and thus influences its performance. Electrochemical investigations indicate that the cell resistance, including the ohmic and polarization resistance, varies with the co-firing temperatures used and leads to a different cell power output. Although the cell polarization resistance follows the rule that higher firing temperatures lead to higher polarization resistance values, the cell ohmic resistance does not follow the expectation that the cell fired at 1200 °C gives the largest ohmic resistance. The morphology analysis reveals the mechanism behind this phenomenon. The best cell performance is obtained by co-firing the cell at 1000 °C, reaching 401 mW cm−2 at 700 °C.

Research Area(s)

  • CeO2, Co-firing, Microstructure, SOFCs

Citation Format(s)

Optimization of sintering temperature for SOFCs by a co-firing method. / Dai, Hailu; Kou, Hongning; Tao, Zetian; Liu, Kailu; Xue, Min; Zhang, Qinfang; Bi, Lei.

In: Ceramics International, Vol. 46, No. 5, 01.04.2020, p. 6987-6990.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal