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Development of electrodes for multifunctional battery based on carbon fabric
오세웅,배석후,손지명,오일권 한국공업화학회 2018 한국공업화학회 연구논문 초록집 Vol.2018 No.0
Recently, as the development of electrical vehicles, unmmaned drones, and transportations using electricity are progressing, researches on not only improvement of performances but also size and efficiency are getting attention. In order to maximize the efficiency of such devices, a battery that functions as energy storage and structure at the same time is required. As to meet such requirements researches on multifunctional battery are highly encouraged thesedays. In this study, carbon fabirc is used for current colloector of both cathode and anode since it is well known to have good electric conductivity and mechanical property. Then, nickel-cobalt and vanadium oxide were grown directly onto carbon fabric by simple hydrothermal methode to complete the anode and cathode respectively. SEM, TEM, XPS, XRD were performed to see morphology and electrochemical properties were examined. Finally, tensile test was performed for mechanical property.
전기 절연형 고분자 복합재의 열전도도와 기계적 특성 상관성 연구
김남일(Namil Kim),박준영(Jun-Young Park),김대근(Dae-Keun Kim),이문영(Moon-Young Lee),홍창민(Chang-Min Hong),배석후(Seok-Hu Bae),윤정환(Jeong-Hwan Yoon),윤주호(Ju-Ho Yun) 한국고분자학회 2020 폴리머 Vol.44 No.4
다양한 고분자 매트릭스와 세라믹 필러의 조합을 통하여 전기 절연형 열전도성 복합재를 제조한 뒤 열전도성과 기계적 특성에 대해 알아보았다. 세라믹 필러의 함량에 비례하여 복합재의 열전도도는 상승하였고 동일한 함량에서 매트릭스의 결정화도가 높거나 필러의 크기가 클수록 상대적으로 높은 열전도도를 보였다. 인장강도, 굴곡강도, 충격강도를 포함한 기계적 강도는 필러의 함량이 증가할수록 전반적으로 감소하는 경향을 보였다. 열전도도 측면에서는 입자의 크기가 크고 함량을 높이는 것이 유리하지만 무게의 증가와 기계적 강도 저하를 수반하기 때문에 열전도도와 기계적 특성을 고려한 재료의 선정과 배합비에 대한 최적화가 필요할 것으로 보인다. Various polymer composites consisting of different polymers and ceramic particles were prepared and then thermal conductivity was investigated in relation to mechanical properties. Thermal conductivity of the composites increased with an increase of the ceramic loading. In addition, the use of polymer with high crystallinity and larger particles was more efficient to enhance thermal conductivity. The mechanical properties such as tensile strength, flexural strength, and impact strength gradually decreased as the ceramic content increased. It is realized that the selection of appropriate materials and their combination is prerequisite to adjust the thermal conductivity and mechanical properties of polymer composites.