Intermediate temperature steam electrolysis using doped lanthanum gallate solid electrolyte (2) effects of CeO2 interlayer on activity

Nitiphong Jirathiwathanakul, Hiroshige Matsumoto, Tatsumi Ishihara

研究成果: 著書/レポートタイプへの貢献会議での発言

1 引用 (Scopus)

抄録

Steam electrolysis is attracting much interest method to produce hydrogen and also the new energy recovery process of wasted heat energy. Up to now, Y2O3 stabilized ZrO2 (YSZ) has been used for a solid electrolyte and so the operating temperature is limited down to 1273K. This study is focused on increasing the performance of steam electrolysis by using LaGaO3 based oxide for electrolyte at intermediate temperature of 873 K, which is upper limit of the obtainable wasted heat. It was found that the formation amount of H2 is almost obeyed the Faraday law up to 1.8 V suggesting that the ionic transport number of oxide ion in LaGaO3 was kept to be 1 under the steam electrolysis condition. The electrolyzing current is improved as following order; La0.6Sr0.4CoO 3<Sm0.5Sr0.5CO3≪ Ba 0.6La0.4CoO3 for anode and Pt<Ni<Ni-Fe for cathode, respectively. Hydrogen production rate higher than 100 umol ml -1 min-1 at 873 K and 300 mA cm-2 were successfully demonstrated at 1.8 V in this study. Electrolysis reaction under various reaction conditions are also presented. The H2 formation rate increased with increasing total flow rate due to the diffusion resistance.

元の言語英語
ホスト出版物のタイトルEco-Materials Processing and Design VIII - ISEPD-8, Proceedings of the 8th International Symposium on Eco-Materials Processing and Design
ページ1005-1008
ページ数4
544-545
出版物ステータス出版済み - 2007
イベント8th International Symposium on Eco-Materials Processing and Design, ISEPD-8 - Kitakyushu, 日本
継続期間: 1 11 20071 13 2007

出版物シリーズ

名前Materials Science Forum
544-545
ISSN(印刷物)02555476

その他

その他8th International Symposium on Eco-Materials Processing and Design, ISEPD-8
日本
Kitakyushu
期間1/11/071/13/07

Fingerprint

gallates
Lanthanum
Solid electrolytes
Steam
solid electrolytes
electrolysis
lanthanum
Electrolysis
steam
interlayers
Thermodynamic properties
Oxides
heat
Temperature
temperature
oxides
hydrogen production
Hydrogen production
operating temperature
Electrolytes

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

これを引用

Jirathiwathanakul, N., Matsumoto, H., & Ishihara, T. (2007). Intermediate temperature steam electrolysis using doped lanthanum gallate solid electrolyte (2) effects of CeO2 interlayer on activity. : Eco-Materials Processing and Design VIII - ISEPD-8, Proceedings of the 8th International Symposium on Eco-Materials Processing and Design (巻 544-545, pp. 1005-1008). (Materials Science Forum; 巻数 544-545).

Intermediate temperature steam electrolysis using doped lanthanum gallate solid electrolyte (2) effects of CeO2 interlayer on activity. / Jirathiwathanakul, Nitiphong; Matsumoto, Hiroshige; Ishihara, Tatsumi.

Eco-Materials Processing and Design VIII - ISEPD-8, Proceedings of the 8th International Symposium on Eco-Materials Processing and Design. 巻 544-545 2007. p. 1005-1008 (Materials Science Forum; 巻 544-545).

研究成果: 著書/レポートタイプへの貢献会議での発言

Jirathiwathanakul, N, Matsumoto, H & Ishihara, T 2007, Intermediate temperature steam electrolysis using doped lanthanum gallate solid electrolyte (2) effects of CeO2 interlayer on activity. : Eco-Materials Processing and Design VIII - ISEPD-8, Proceedings of the 8th International Symposium on Eco-Materials Processing and Design. 巻. 544-545, Materials Science Forum, 巻. 544-545, pp. 1005-1008, 8th International Symposium on Eco-Materials Processing and Design, ISEPD-8, Kitakyushu, 日本, 1/11/07.
Jirathiwathanakul N, Matsumoto H, Ishihara T. Intermediate temperature steam electrolysis using doped lanthanum gallate solid electrolyte (2) effects of CeO2 interlayer on activity. : Eco-Materials Processing and Design VIII - ISEPD-8, Proceedings of the 8th International Symposium on Eco-Materials Processing and Design. 巻 544-545. 2007. p. 1005-1008. (Materials Science Forum).
Jirathiwathanakul, Nitiphong ; Matsumoto, Hiroshige ; Ishihara, Tatsumi. / Intermediate temperature steam electrolysis using doped lanthanum gallate solid electrolyte (2) effects of CeO2 interlayer on activity. Eco-Materials Processing and Design VIII - ISEPD-8, Proceedings of the 8th International Symposium on Eco-Materials Processing and Design. 巻 544-545 2007. pp. 1005-1008 (Materials Science Forum).
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