Structural stability of silver under single-chamber solid oxide fuel cell conditions

Naveed Akhtar*, Stephen P. Decent, Kevin Kendall

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

26 Citations (Scopus)

Abstract

In the present study, structural stability of silver under single-chamber conditions has been examined. Micro-tubular cells made of conventional solid oxide fuel cell materials (Ni-YSZ/YSZ/LSM) with silver paste and silver current-collecting wires (for both electrodes) were prepared. The cells were operated with methane/air mixture of 25/60 mL min-1, furnace temperature of 750 °C, and at an operating voltage of 0.5 V. The results showed increasing porosity in the current-collecting silver wire with time, leading to rupture, finally. It is postulated that the porosity formation could be due to the formation of silver oxide which is highly unstable (volatile) at operating temperature considered in this study. Furthermore, vaporization and melting of silver due to cell overheating under mixed-reactant conditions is expected. Based on experimental evidences, it is concluded that silver may not be a good choice to be employed under the above specified operating conditions, as it lacks long-term structural stability.
Original languageEnglish
Pages (from-to)7807-7810
Number of pages4
JournalInternational Journal of Hydrogen Energy
Volume34
Issue number18
Early online date8 Aug 2009
DOIs
Publication statusPublished - Sep 2009
Externally publishedYes

Keywords

  • Solid oxide fuel cell
  • Single-chamber
  • Silver
  • Structural
  • Micro-tubular

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Fuel Technology
  • Condensed Matter Physics
  • Energy Engineering and Power Technology

Fingerprint

Dive into the research topics of 'Structural stability of silver under single-chamber solid oxide fuel cell conditions'. Together they form a unique fingerprint.

Cite this