Intermediate temperature solid oxide electrolysis cell using LaGaO 3-base oxide

Tatsumi Ishihara, Shotaro Matsushita, Takaaki Sakai, Hiroshige Matsumoto

研究成果: ジャーナルへの寄稿学術誌査読

6 被引用数 (Scopus)


NiFe oxide composite was studied as cathode of steam electrolysis cell using LaGaO 3 based oxide for electrolyte and it was found that H 2 formation rate at 1.6 V was much improved by combination of oxygen ion conducting oxide with NiFe (9:1) bimetallic alloy. In particular, a combination with La 0.6Sr 0.4Fe 0.9Mn 0.1O 3 (LSFM) or Ce 0.8Sm 0.2O 2 (SDC) is highly effective for increasing current density. Impedance plots for cathode consisted of two semicircles, which could be assigned to a diffusion and an activation overpotential in low and high frequency region, respectively. Compared with NiFe, mixing with SDC is much more effective for decreasing the diffusion overpotential. This might be assigned to increase in three phase boundary and porosity of cathode.

ジャーナルSolid State Ionics
出版ステータス出版済み - 10月 4 2012

!!!All Science Journal Classification (ASJC) codes

  • 化学 (全般)
  • 材料科学(全般)
  • 凝縮系物理学


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