Abstract:
본발명은고체산화물셀의작동효율을상승시키기위해환원방지막이구비된샌드위치박막구조의전해질을포함하는고체산화물셀 및그 제조방법에관한것으로서, 전해질층의환원을방지하고, 전해질두께를최소화하여고체산화물셀의내부저항을낮춰높은개회로전압을출력할수 있어이를적용한고체산화물셀은두꺼운전해질에비하여내부의온도구배가작아열충격저항성이상대적으로향상될수 있다. 또한, 제조과정중 고온의소성단계가없으므로단위전지구성요소간의소성온도격차를효과적으로줄임으로써, 고체산화물셀의제작을위한소성공정을크게단축시킬수 있고, 이를통해제조단가를절감할수 있다.
Abstract:
PURPOSE: A solid oxide fuel cell and a manufacturing method thereof are provided to prevent the defect occurrence by the sintering difference at a multi-layered structure by controlling the pore size distribution, and the surface roughness. CONSTITUTION: A solid oxide fuel cell comprises the following: a porous supporter; a dense electrolyte thin film; and a nanoporous layer smaller including a pore on the surface where contacting with the dense electrolyte thin film with the size smaller than the thickness of the dense electrolyte thin film and the pore size of the porous supporter. The nanoporous layer is formed in between the porous supporter and the dense electrolyte thin film. The nanoporous layer is a coating film of a metal oxide sol dispersed with nanopowder.
Abstract:
Provided are transition metal-doped titania nanopowders, which exhibit remarkable absorption in both UV region and visible region, especially are remarkably improved in optical material characteristics in the UV region. The transition metal-doped titania nanopowders are prepared by subjecting a precursor to a combustion reaction, wherein the precursor is obtained by dissolving iron acetylacetonate and zinc acetylacetonate in titanium isopropoxide. The titania nanopowders are doped with Fe and Zn components. A content of the Fe and Zn components contained in the titania nanopowders is 0.05-0.2wt%. A weight ratio of Fe component to Zn component is in the range of 10-25.