Thermochemical two-step water-splitting for hydrogen production using Fe-YSZ particles and a ceramic foam device

被引：91

作者：

Gokon, Nobuyuki ^{[1
]}

Hasegawa, Tomoki ^{[1
]}

Takahashi, Shingo ^{[1
]}

Kodama, Tatsuya ^{[1
,2
]}

机构：

[1] Niigata Univ, Grad Sch Sci & Technol, Nishi Ku, Niigata 9502181, Japan

[2] Niigata Univ, Fac Engn, Dept Chem & Chem Engn, Nishi Ku, Niigata 9502181, Japan

来源：

ENERGY | 2008年 / 33卷 / 09期

关键词：

solar heat; energy conversion; hydrogen production; thermochemical water-splitting; ferrite cycle; ceramic foam;

D O I：

10.1016/j.energy.2008.04.011

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Fe3O4 supported on cubic yttria-stabilized zirconia (Fe3O4/C-YSZ) is proposed as a promising redox material for the production of hydrogen from water via a thermochemical two-step water-splitting cycle. In this study, the evolution of oxygen and hydrogen during the cyclic reaction was examined using Fe3O4/C-YSZ particles in order to demonstrate reproducible and stoichometric oxygen/hydrogen production through a repeatable two-step reaction. Subsequently, a ceramic foam device coated with Fe3O4 and c-YSZ particles was prepared and examined as a thermochemical water-splitting device in a directly irradiated receiver/reactor hydrogen production system. The Fe3O4/C-YSZ system formed a Fe-containing YSZ (Fe-YSZ) by high-temperature reaction between Fe3O4 and the c-YSZ support at 1400 degrees C in an inert atmosphere. The reaction mechanism of the two-step water-splitting cycle is associated with the redox transition of Fe2+-Fe3+ ions in the c-YSZ lattice. The Fe-YSZ particles exhibit good reproducibility for reaction with a hydrogen/oxygen ratio of approximately 2.0 throughout repeated cycles. The foam device coated with Fe-YSZ particles was also successful for continual hydrogen production through 32 repeated cycles. A 20-27% ferrite conversion was obtained using 10.5 wt% Fe3O4 loading over an irradiation period of 60 min. (C) 2008 Elsevier Ltd. All rights reserved.

引用

页码：1407 / 1416

页数：10

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