Improving the sinterability of CeO2 by using plane-selective nanocubes

X. Dan, Chao Wang, Xi Xu, Ya Liu, Xiaowei Cheng, M. Fronzi, Lei Bi, X. S. Zhao

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)

Abstract

CeO2 nanocubes with (100) surface orientation are successfully synthesized and found to facilitate the sinterability of CeO2 material. The CeO2 nanocubes show a much-improved sinterability relative to CeO2 nanoparticles prepared by the conventional citric-nitrate method. The nanocubes can be successfully sintered at a relatively low temperature of 1200 °C without using any sintering aids. In contrast, a pellet using conventional CeO2 nano-powder obtained from the conventional citric-nitrate method can be densified only after sintering at 1400 °C, which is 200 °C higher than that for the CeO2 nanocube sintering, although the starting particle size of both CeO2 samples is similar. Density functional theory indicates that the surface energy of the (100) plane is significantly higher than that of the (111) plane, which is the more typical surface presentation of conventional CeO2 particles. This high surface energy allows fast growth of the CeO2 nanocubes during sintering, contributing to their improved sinterability.

Original languageEnglish
Pages (from-to)4429-4434
Number of pages6
JournalJournal of the European Ceramic Society
Volume39
Issue number14
DOIs
Publication statusPublished - 2019 Nov
Externally publishedYes

Keywords

  • CeO
  • Selective plane
  • Sintering
  • Solid oxide fuel cells

ASJC Scopus subject areas

  • Ceramics and Composites
  • Materials Chemistry

Fingerprint

Dive into the research topics of 'Improving the sinterability of CeO<sub>2</sub> by using plane-selective nanocubes'. Together they form a unique fingerprint.

Cite this