Performance evaluation of anode-supported Gd 0.1 Ce 0.9 O 1.95 cell with electrospun La 0.6 Sr 0.4 Co 0.2 Fe 0.8 O 3-δ -Gd 0.1 Ce 0.9 O 1.95 cathode

Jin Goo Lee, Chan Min Lee, Myeong Geun Park, Sang Jin Jung, Yong-Gun Shul

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Abstract

A cathode performance is considered as a key factor to enhance the power efficiency of intermediate temperature solid oxide fuel cells (IT-SOFCs). In order to improve the cathode performance, La 0.6 GSr 0.4 Co 0.2 Fe 0.8 O 3-δ -Gd 0.1 Ce 0.9 O 1.95 (LSCF-GDC) cathode is fabricated by electrospinning method. The three-dimensional fiber network cathode has high porosity, continuous pathway for charge transfer and increased triple phase boundary sites (TPB). The electrospun cathode is applied to Ni-GDC anode-supported Gd 0.1 Ce 0.9 O 1.95 cell. The electrical properties of the electrospun LSCF-GDC cathode are compared with the conventional LSCF-GDC powder cathode. The polarization resistance and maximum power density of the cell with the electrospun cathode are about 0.08 Ω cm 2 and 0.85 Wcm -2 at 650 °C, respectively. The power density of the cell with the electrospun cathode is approximately two times higher than o.45Wcm -2 (at 650°C) of the cell with the conventional LSCF-GDC cathode. This result demonstrates that the application of the electrospun LSCF-GDC cathode can be a promising method for enhancing the electrical performance of an anode-supported GDC cell at intermediate temperatures.

Original languageEnglish
Pages (from-to)356-360
Number of pages5
JournalElectrochimica Acta
Volume108
DOIs
Publication statusPublished - 2013 Jan 1

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All Science Journal Classification (ASJC) codes

  • Chemical Engineering(all)
  • Electrochemistry

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