Densification and electrical conductivity of Fe and Mn‐doped Ce0.83Sm0.085Nd0.085O2‐& by solid‐liquid method

Dingbang Jiang, Jianxin Wang, Yu Su, Xiaohui Chang, Baohua Cao, Ming Chen, Qin Wang, Wanbing Guan, Jun Yang

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

Fe and Mn‐doped Ce0.83Sm0.085Nd0.085O2‐& (SNDC) powders are successfully synthesized by the simple and efficient solid‐liquid method. The crystallinity and morphologies of the powders were characterized by X‐ray diffractometer, Raman spectrum, and scanning electron microscopy. The effect of doping on sintering behavior, grain interior, and grain boundary conductivity are studied. The doping of Fe can effectively reduce the sintering temperature from 1450oC to 1250°C and keep the same density. Compared with SNDC, 1 mol% Fe‐doped SNDC (Fe‐SNDC) sintered at 1250°C shows a higher total conductivity of 2.13 × 10−2 S·cm‐1 at 650°C. Also, it exhibits that doping of Fe can increase the conductivity of grain interior and grain boundary simultaneously. The present work shows that the Fe‐SNDC synthesized by solid‐liquid method can be used as a potential electrolyte for intermediate‐temperature solid oxide fuel cells.
Original languageEnglish
JournalInternational Journal of Applied Ceramic Technology
Volume17
Issue number6
Pages (from-to)2716-2724
ISSN1546-542X
DOIs
Publication statusPublished - 2020

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