NiFe2O4/m-ZrO2 device를 이용한 고온 태양열 열화학 싸이클의 수소 생산

Two-step thermochemical cycle using ferrite-oxide(Fe3O4) device was investigated. The H2O(g) was converted into H2 in the first experiment which was performed using a dish type solar thermal system. However the experiment was lasted only for 2 cycles because the metal oxide device was sintered and broken down. Another problem was that the reaction was taken place mainly on a side of the metal oxide device. The m-ZrO2, which was widely known as a material preventing sintering, was applied on the metal oxide device. The ferrite loading rate and the thickness of the metal oxide device were increased from 10.67wt% to 20wt% and from 10mm to 15mm, respectively. The chemical reactor having two inlets was designed in order to supply the reactants uniformly to the metal oxide device. The second-experiment was lasted for 5 cycles, which was for 6 hours. The total amount of the H2 production was 861.30mL.