Coke-tolerant La2Sn2O7-Ni-Gd0.1Ce0.9O1.95 composite anode for direct methane-fueled solid oxide fuel cells

Myunggeun Park, Jin Goo Lee, Ok Sung Jeon, Tae Ho Shin, Jae ha Myung, Yong Gun Shul

Research output: Contribution to journalArticle

Abstract

Direct CH4-fueled solid oxide fuel cells (SOFCs) have been studied for a few decades, but carbon depositions on the Ni-based anodes are still remained as a major problem. In order to enhance coke tolerances and durability of SOFCs, La2Sn2O7 nano-powders are prepared by co-precipitation. The SOFCs with the different amounts of the La2Sn2O7 nano-powders in the Ni-GDC anodes are tested under dry CH4, and the 0.3 wt.% La2Sn2O7-Ni-GDC (0.3LNG) anodes show the highest cell performances of all anodes. The maximum power density of the cell is approximately 0.55 W cm−2 at 650 °C. The durability of the 0.3LNG cell is significantly enhanced without any carbon formations, showing approximately 0.69 V over 600 h at 0.3 A cm−2, whereas the conventional Ni-GDC cell is stopped only after 90 h. It suggests that the 0.3LNG is a promising anode material to enhance coke-tolerances and durability of direct-methane fuel cells.

Original languageEnglish
Pages (from-to)323-331
Number of pages9
JournalJournal of Electroceramics
Volume40
Issue number4
DOIs
Publication statusPublished - 2018 Jun 1

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Condensed Matter Physics
  • Mechanics of Materials
  • Electrical and Electronic Engineering
  • Materials Chemistry

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