Electrochemical Properties of a Co-Doped SrSnO3-Î-Based Semiconductor as an Electrolyte for Solid Oxide Fuel Cells

  • M. A.K.Yousaf Shah
  • , Bin Zhu
  • , Sajid Rauf
  • , Naveed Mushtaq
  • , Muhammad Yousaf
  • , Nasir Ali
  • , Zuhra Tayyab
  • , Nabeela Akbar
  • , Chang Ping Yang
  • , Baoyuan Wang

Research output: Contribution to journalArticlepeer-review

60 Scopus citations

Abstract

Tuning semiconductors as an electrolyte for advanced low-temperature fuel cells is an exciting but challenging research subject. To realize this, we develop the cobalt-doped SrSnO3 (SrCo0.1Sn0.9O3-Î and SrCo0.2Sn0.8O3-Î) toward an electrolyte, which only permits ions to pass but blocks the electrons simultaneously. The SrCo0.2Sn0.8O3-Î electrolyte fuel cell has achieved a remarkable performance with a maximum power density of 476 mW cm-2 and obtained a high ionic conductivity of 0.12 S cm-1 at a low temperature of 520 C. This improved performance is accredited to the bandgap engineering and built-in electric field, which significantly enhanced the ionic transport while suppressing the electronic conduction. The doped SrCoSnO3-Î perovskite materials demonstrated a high potential for solving the low-temperature solid oxide fuel cell (LT-SOFC) material's challenging problems.

Original languageEnglish
Pages (from-to)6323-6333
Number of pages11
JournalACS Applied Energy Materials
Volume3
Issue number7
DOIs
StatePublished - 27 Jul 2020
Externally publishedYes

Keywords

  • bandgap engineering
  • doping
  • effect of a junction
  • high ionic conductivity
  • low-temperature solid oxide fuel cell (LT-SOFC)
  • semiconductor SrCoSnO

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