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記事

5 引用 (Scopus)

抄録

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.

元の言語英語
ページ(範囲)77-80
ページ数4
ジャーナルSolid State Ionics
225
DOI
出版物ステータス出版済み - 10 4 2012

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Regenerative fuel cells
electrolysis
Oxides
Cathodes
cathodes
oxides
cells
Steam
Phase boundaries
oxygen ions
Electrolysis
steam
Temperature
Electrolytes
temperature
Current density
Porosity
plots
Chemical activation
electrolytes

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics

これを引用

Intermediate temperature solid oxide electrolysis cell using LaGaO 3-base oxide. / Ishihara, Tatsumi; Matsushita, Shotaro; Sakai, Takaaki; Matsumoto, Hiroshige.

:: Solid State Ionics, 巻 225, 04.10.2012, p. 77-80.

研究成果: ジャーナルへの寄稿記事

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abstract = "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.",
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AB - 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.

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