Kyung Hee University · Engineering
Chang Woo Lee 교수의 연구실은 리튬이온이온 배터리의 안정성과 성능 향상을 위한 전해질 개발과 나노구조 전도성 소재의 설계 및 응용을 핵심 연구 분야로 삼고 있습니다. 특히 화재 저항성 전해질 첨가제, 유기 전해질의 열적 안정성, 그리고 고도로 제어된 텅스텐 질화막의 전기적 특성 연구를 통해 에너지 저장 소자의 안전성과 효율성을 극대화하고자 합니다. 또한 생물학적 발효 공정 최적화를 위한 세포 재순환 시스템 개발도 함께 진행하고 있습니다.
Figures are computed from collected data and may differ slightly.
The electrochemical and thermal properties of nonaqueous electrolytes containing a flame‐retardant additive hexamethoxycyclotriphosphazene were measured using cyclic voltammetry, electrochemical cycling, differential scanning calorimetery, and accelerating rate calorimetery. The flame‐retardant additive was synthesized by reacting sodium methoxide and hexachlorocyclotriphosphazene . The electrochemical stability of the electrolyte was determined using cyclic voltammetry. A mixture of lithium hex
Ethanol fermentation by yeast was carried out in a cell filtration recycle system with a hollow-fiber membrane filter. Maximum biomass concentrations up to 210 g dry wt/L were obtained, but in normal operation concentrations they were between 100 and 150 g/L. The ethanol productivity using 14% glucose feed was 85 g/L h, with an ethanol concentration of 65 g/L and an ethanol yield of over 90%. The ethanol productivity and yeast growth rate decreased as the cell concentration increased beyond a ce
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