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Plasmon-Enhanced Photoelectrochemical Device by High Density Array of Quasi-3D Metal Structure
하경원,김진곤 한국고분자학회 2021 한국고분자학회 학술대회 연구논문 초록집 Vol.46 No.1
Photoelectrochemical (PEC) devices using solar-energy are made of materials having a band gap wider than the energy required for reaction. Because of its stability, single-layer inorganic materials (TiO2, WO3, etc.) are mainly used. However these materials absorb only UV wavelengths, have very low efficiency. As one of the methods to overcome this point, research has been conducted to combine a metal causes a surface plasmon effect with PEC device. It is known that PEC device with plasmon metal have high efficiency due to the several effects including hot electrons effect. In this study, TiO2 cylinder will make by using an AAO template. Additionally 3D-quasi gold structure will be added. By combining TiO2 with 3D-quasi structure, it will be possible to increase the efficiency by absorbing a wide wavelength of light without losing the surface area due to the TiO2 cylinder.
Fabrication of 3D Anisotropic Nano-Metal Structure and Application in Fuel Cell
하경원,김진곤 한국고분자학회 2021 한국고분자학회 학술대회 연구논문 초록집 Vol.46 No.2
A fuel cell is a device that produces electricity through redox reaction of fuels such as oxygen and hydrogen, and is a next-generation energy conversion device that is attracting attention in the fields of transportation and power generation. However, Pt/C based fuel cells, which have been studied the most, have various problems. As the reaction proceeds, there are problems such as corrosion of the carbon, loss of activity due to repeated dissolution/aggregation of the platinum, or smooth mass transfer of fuel or by-products. In this study, we will use block copolymer with a porous nickel foam electrode. By using block copolymer, a three-dimensional anisotropic metal mesh structure will be formed on the surface of a nickel foam electrode and can fabricate a fuel cell with excellent device stability and mass transfer.