http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
보조에너지원으로서의 수퍼커패시터용 나노전극소재로서의 탄소/망간산화물의 전기화학적 특성
안균영(Ahn, Kyun-Young),마상복(Ma, Sang-Bok),김광범(Kim, Kwang-Bum) 한국신재생에너지학회 2007 한국신재생에너지학회 학술대회논문집 Vol.2007 No.11
Birnessite-type manganese dioxide(MnO₂) was coated uniformly onto carbon nanotubes (CNTs) through a spontaneous direct redox reaction between CNTs and permanganate ions(MnO₄;^-). The initial specific capacitance of the MnO₂/CNT nanocomposite in an organic electrolyte at a large current density of 1 A/g was 250 F/g, which is equivalent to 139 mAh/g based on the total weight of the electrode material including the electroactive material, conducting agent and binder. The specific capacitance of the MnO₂ in the MnO₂/CNT nanocomposite was as high as 580 F/g (320 mAh/g), indicating excellent electrochemical utilization of the MnO₂. The addition of CNTs as a conducting agent can improve the high rate capability of MnO₂/CNT nanocomposite considerably. An analysis of the in-situ X-ray absorption near-edge structure (XANES) showed an improvement in the structural and electrochemical reversibility of the MnO₂/CNT nanocomposite by heat-treatment.
배터리/슈퍼커패시터 하이브리드 ESU의 상온 및 저온에서의 성능 평가 및 제어 전략 개발
이가은(Gaeun Lee),고성연(Sungyeon Ko),홍승철(Seungchul Hong),안균영(Kyunyoung Ahn),남재도(Jaedo Nam),김현수(Hyunsoo Kim) 한국자동차공학회 2011 한국자동차공학회 학술대회 및 전시회 Vol.2011 No.11
In this study, the performance verification of an electric vehicle (EV) with a battery/supercapacitor hybrid energy storage unit (ESU) in room and low temperature was conducted, and a control strategy for the hybrid ESU was proposed. For the battery/supercapacitor hybrid ESU, a control strategy was proposed, which controls the battery power when the battery power demand was greater than the battery power limit, and the insufficient or extra power was managed in the supercapacitor. For the performance verification, simulation was conducted for various temperatures and number of supercapacitors.
고출력/저온 방전을 위한 리튬전지와 슈퍼캐패시터 하이브리드 셀의 방전 거동 특성 연구
장우진(Woojin Jang),홍승철(Seung-Chul Hong),홍정표(Jung-Pyo Hong),황태선(Taeseon Hwang),오준석(Joon-Suk Oh),고성연(Sungyeon Ko),이가은(Gaeun Lee),안균영(Kyunyoung Ahn),김현수(Hyunsoo Kim),서종환(Jonghwan Suhr),남재도(Jae-Do Nam) 한국자동차공학회 2013 한국 자동차공학회논문집 Vol.21 No.6
In this study, we fabricated a parallelly connected Li-ion battery/supercapacitor hybrid cell to combine the advantageous characteristics of Li-ion battery and supercapacitor, high energy density and high power density, respectively, and investigated its discharging characteristics over a wide temperature range from -40 to 25°C. At the initial state of discharging of the hybrid cell, the power was mostly provided by the supercapacitor and then the portion of the Li-ion battery was gradually increased. By installing a switching system into the hybrid cell, which controls the discharging sequence of Li-ion battery and supercapacitor, the maximum power was improved by 40% compared with non switching system. In addition at low temperatures, the power and discharging time of the hybrid cell were significantly enhanced compared to a battery-alone system. The hybrid cell is expected to be applied in electric vehicles and small domestic appliances that require high power at initial discharging state.