Characteristics of Ba(Zr0.1Ce0.7Y0.2)O3-δ nano-powders synthesized by different wet-chemical methods for solid oxide fuel cells

Sung Hwan Min, Jin Goo Lee, Ok Sung Jeon, Myeong Geun Park, Kwang Hyun Ryu, Jae-ha Myung, Yong-Gun Shul

Research output: Contribution to journalArticlepeer-review

15 Citations (Scopus)

Abstract

Ba(Zr0.1Ce0.7Y0.2)O3-δ nano-particles were prepared by different wet-chemical synthesis, Pechini (BZCY(P)) and co-precipitation (BZCY(C)), respectively. The BZCY(C) powders have a particle size in range of about 50~150 nm, which is smaller than the BZCY(P) powders with about 500~900 nm. Both the BZCY materials show perovskite structures, but there are impurities in the BZCY (P). Moreover, the electrolyte density was higher in the BZCY (C) than the BZCY (P). The single cells with BZCY (C) electrolytes exhibited about 0.23 W cm−2 at 600 °C and about 0.31 W cm−2 at the same temperature were obtained when the anode-functional layer was introduced between the anode and electrolyte. Thus, the BZCY prepared by carbonate-derived co-precipitation method can be more favorable for high-purity and dense electrolytes in the solid oxide fuel cells than the BZCY prepared by Pechini method.
Original languageEnglish
Pages (from-to)433-437
JournalCeramics International
Volume44
Issue number1
Early online date27 Sept 2017
DOIs
Publication statusPublished - Jan 2018

Keywords

  • Solid oxide fuel cell
  • BZCY
  • Functional layer
  • Nickel penetration
  • Proton conductor

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