Journal
CERAMICS INTERNATIONAL
Volume 42, Issue 8, Pages 10476-10481Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.ceramint.2016.03.038
Keywords
Sintering; Yttria-doped barium zirconate; Flux; Electrolyte; Proton-conducting fuel cell
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Funding
- institutional research program of the Korea Institute of Science and Technology (KIST)
- Energy Technology Development Program of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) from Ministry of Trade, Industry & Energy, Republic of Korea [20153010031940]
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The major barrier to the practical application of Ba(Zr,Y)O-3 (BZY) as an electrolyte material for proton conducting fuel cells (PCFCs) lies in its extremely inferior sintering characteristics. In this research, flux composed of 28 mol% BaO and 72 mol% CuO was employed as a novel sintering aid for BZY. Incorporation of nano-crystalline BaO-CuO flux, with a eutectic point of 890 degrees C, remarkably enhanced the sintering behavior of BZY due to the formation of a transient liquid phase, and a relative density of up to 97% of the theoretical density was obtained at 1300 degrees C with a short soaking time of 2 h. (C) 2016 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
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