인공 태양열 집광장치를 이용한 Fe-CeO2 전이금속 화합물이 코팅된 세라믹 금속 산화물 반응체의 열화학 이단계 물분해 싸이클 및 수소 생산의 실험적 연구
Experimental Study of Thermochemical Two-step Water Splitting Cycle for Hydrogen by Fe-CeO2 Redox Metal Oxide Coated foam Device with 3kWth Sun-simulator
0
조회
0
다운로드
0
인용
0
참고문헌
키워드
초록
A newly developed Fe-CeO2-coated ceramic-foam device has been designed, fabricated, and tested for higher oxygen/hydrogen productivity in the thermochemical two-step water-splitting cycle. For the fabrication of the Fe-CeO2-coated ceramic-foam device, the direct depositing method was adopted. This method, in which elemental Fe is doped into CeO2 and this is coated onto the ceramic foam matrix surface, has advantages for the fabrication of reactive foam devices. In the synthesis of Fe-CeO2, the degree of Fe doping was set at 10, 15, or 30 mol%, and the amount of Fe-CeO2 loaded onto the foam matrix surface was fixed at 30 wt%. A 3kWth sun-simulator was used as the heat source in the thermochemical two-step water-splitting cycle for hydrogen production. The thermal reduction step for releasing oxygen was conducted at an operating temperature of 1400°C for 45 minutes, and the subsequent water-decomposition step for producing hydrogen was carried out at 1200°C for 60 minutes. The performance of the newly developed Fe-CeO2 foam device was compared with that of previously tested foam devices fabricated by the co-precipitation method and the spin-coating method.
Abstract
A newly developed Fe-CeO2-coated ceramic-foam device has been designed, fabricated, and tested for higher oxygen/hydrogen productivity in the thermochemical two-step water-splitting cycle. For the fabrication of the Fe-CeO2-coated ceramic-foam device, the direct depositing method was adopted. This method, in which elemental Fe is doped into CeO2 and this is coated onto the ceramic foam matrix surface, has advantages for the fabrication of reactive foam devices. In the synthesis of Fe-CeO2, the degree of Fe doping was set at 10, 15, or 30 mol%, and the amount of Fe-CeO2 loaded onto the foam matrix surface was fixed at 30 wt%. A 3kWth sun-simulator was used as the heat source in the thermochemical two-step water-splitting cycle for hydrogen production. The thermal reduction step for releasing oxygen was conducted at an operating temperature of 1400°C for 45 minutes, and the subsequent water-decomposition step for producing hydrogen was carried out at 1200°C for 60 minutes. The performance of the newly developed Fe-CeO2 foam device was compared with that of previously tested foam devices fabricated by the co-precipitation method and the spin-coating method.
참고문헌 (7)
- K odama, T., "Thermochemical Cycles for High-Temperature Solar Hydrogen Production", Chemical Reviews, 107(10), pp.4048~4077 (2007)
- Kawakami, S., "Thermochemical Two-step Water Splitting Cycle using Ni-ferrite and CeO2 Coated Ceramic Foam Devices by Concentrated Xe-light Radiation", Energy Procedia, 49, pp.1980~1989 (2014)
- Cho, H. S., "Experimental Study of Mn-CeO2 Coated Ceramic Foam Device for Two-step Water Splitting Cycle Hydrogen Production with 3kW Sun-simulator", AIP Conference Proceedings, 2303(1), pp.170004~ (2020), AIP Publishing LLC
- Schieber, G. L., "H2O Splitting via a Two-step Solar Thermo-electrolytic Cycle Based on Non-stoichiometric Ceria Redox Reactions : Thermodynamic analysis", International Journal of Hydrogen Energy, 42(30), pp.18785~18793 (2017)
- Gokon, N., "Thermochemical Reactivity of 5-15 mol% Fe, Co, Ni, Mn-doped Cerium Oxides in Two-step Water-splitting Cycle for Solar Hydrogen Production", Thermochimica Acta, 617, pp.179~190 (2015)
- Luciani, G., "Syngas Production by Thermochemical Splitting of H2O", CO2 over Doped Ceria-zirconia Materials, 2020, pp.8, 204~
- Cho, H. S., "Improved Operation of Solar Reactor for Two-step Water-splitting H2 Production by Ceria-coated Ceramic Foam Device", International Journal of Hydrogen Energy, 40(1), pp.114~124 (2015)