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오인혁,이성민,김연우,남인호,장석태 한국고분자학회 2021 한국고분자학회 학술대회 연구논문 초록집 Vol.46 No.2
Flexible energy storage devices have been interested to apply for wearable devices. Paper is emerging as a next-generation material. Due to porosity, paper have selected to complement low energy performance of supercapacitors. We introduce a paper-based supercapacitor fabrication technology that separates two metal electordes with a hydrophobic barrier. The key point is to deposit electrode in the desired space within a single paper. Other devices that require multi-layers no longer need to increase their size. The solid-state supercapacitor device can be fabricated by infiltration of gel electrolyte. The device exhibits a capacitance 560.2 mFcm<SUP>-2</SUP> and excellent cycling performance with 95.2% retention after 2000 cycles and stability under the mechanical test. The maximum power and energy density of our device are measured to be 1.597 mWcm<SUP>-2</SUP> and 28.74 μWhcm<SUP>-2</SUP>. In this work, it can be developed for batteries or other wearable electronic devices that require the flexibility and multi-layers.
담배의 수분 흡착 특성과 흡착 등온식의 모델에 관한 연구
오인혁,김기환,정경락,O, In-Hyeok,Kim, Gi-Hwan,Jeong, Gyeong-Rak 한국연초학회 1996 한국연초학회지 Vol.18 No.2
In this study, to obtain the basic data for the optimum moisture control system, moisture adsorption characteristics, adsorption isotherms models for water and surface physical characteristics of burley and flue-cured tobacco were investigated. By the hypothesis' the phenomenon of moisture adsorption of tobacco is the same as the first order reaction, the wetting constant (k) and equilibrium moisture content were obtained. And activation energy, frequency factors were also calculated by applying its data to Arrhenius equation. The Kamei's empirical formula of moisture adsorption isotherms showed the best agreement with the experimental data and its correlation coefficient (r) was 0.997. It can be seen that specific surface area of burley is 157 m2/g, that of flue-cured is 152 m2/g, -△H1 of adsorbed monolayer is 45,972 J/mol, 45,486 J/mol, respectively, and the condensation heat (40,595 J/mol) being caught in adsorbed multilayer is less than that of monolayer.