An efficient Sm and Ge co-doped ceria nanocomposite electrolyte for low temperature solid oxide fuel cells

Muhammad Sarfraz Arshad, Rizwan Raza*, M. Ashfaq Ahmad, Ghazanfar Abbas, Amjad Ali, Asia Rafique, M. Kaleem Ullah, Sajid Rauf, M. Imran Asghar, Naveed Mushtaq, Shahid Atiq, Shahzad Naseem

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

17 Citations (Scopus)

Abstract

In this study we present a new nanocomposite electrolyte based on samarium (Sm) and germanium (Ge) co-doped ceria Ce0.7Sm0.15Ge0.15O2-δ (SGeDC). The nanocomposite electrolyte was prepared using co-precipitation method. The crystal structure and surface morphology were determined using x-ray diffraction (XRD) and scanning electron microscopy (SEM), respectively. Four probe dc conductivity indicated the value of 0.074S/cm at 650°C. The Fuel cell performance was carried out using hydrogen as fuel. The maximum OCV observed was 0.95V while the peak power density came out to be 600mW/cm2 at 600°C. It is suggested that adding Ge, the conductivity as well as performance of this new nanocomposite electrolyte is comparatively enhanced and it can find potential applications in low temperature solid oxide Fuel cells (LTSOFCs).

Original languageEnglish
Pages (from-to)170-174
JournalCeramics International
Volume44
Issue number1
DOIs
Publication statusPublished - 2018
MoE publication typeA1 Journal article-refereed

Keywords

  • Electrolyte
  • Germanium
  • Morphology
  • Nanocomposite
  • Solid oxide fuel cells

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