Novel anode current collector for hydrocarbon fuel solid oxide fuel cells

Manasa Kumar Rath, Alexey Kossenko, Alexander Kalashnikov, Michael Zinigrad

Research output: Contribution to journalArticlepeer-review

11 Scopus citations

Abstract

The current collector is one of the essential and critical components for reliable operation of the solid oxide fuel cell (SOFC). Here a novel anode current collector is proposed to enhance the electrochemical performance stability of the anode supported cell operated under hydrocarbon fuel. A scandium modified nickel fiber felt (Sc: Ni-felt), and a pristine nickel felt (Ni-felt) are employed as the anode current collector to evaluate and compare the electrochemical performance and long-term stability under humidified methane. The maximum power densities of the cell measured using the Sc: Ni-felt current collector are 679, 528, and 389 mW cm−2 at 800, 750, and 700 °C, respectively, under humidified CH4. A significant improvement of ca. 19%, 24%, and 28% in the power density is recorded compared to the cell tested with Ni-felt. A load of 625 mA cm−2 is applied to investigate the long-term stability of both cells. The cell with the novel current collector exhibits excellent stability after 50 h, while the cell tested with Ni-felt gets deteriorated with time under the same operating condition. Finally, the electrochemical impedance analysis under a constant load has been carried out to evaluate the effect of the Sc: Ni current collector on the electrochemical performance and stability of the cell.

Original languageEnglish
Article number135271
JournalElectrochimica Acta
Volume331
DOIs
StatePublished - 20 Jan 2020

Keywords

  • Current collector
  • Long-term stability
  • Scandium
  • Solid oxide fuel cell
  • and Hydrocarbon

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