화학공학소재연구정보센터
학회 한국공업화학회
학술대회 2022년 봄 (05/11 ~ 05/13, 제주국제컨벤션센터(ICC JEJU))
권호 26권 1호
발표분야 [전기화학] 차세대 고에너지 리튬전지 연구동향: 금속-공기 & 리튬-황
제목 Next-Generation Sulfur Cathode: Electrocatalyst to Accelerate Sulfur Conversion Reaction
초록 Although lithium-sulfur(Li-S) batteries have been expected as a promising high-energy-density battery system,entangled problems in each cell component hamper their practical use.Especially in cathode, low electronic/ionic conductivity of sulfur based activematerial, continuous dissolution of polysulfide, and sluggish redox kineticscause the poor cycle stability and energy density. For the energy density of500~600 W h kg-1, achievement of high areal sulfur loading and lowelectrolyte to sulfur (E/S) ratio is needed, but conventional carbon/sulfurcomposite-type cathodes have limitations to satisfy this requirement. In thisseminar, next-generation sulfur cathode with the electrocatalyst acceleratingthe sulfur conversion reaction is introduced as a powerful platform to simultaneouslyimprove the cycle stability, reversible capacity, and rate capability. 
저자 이진우
소속 KAIST
키워드 Electrocatalyst; Li-S battery; Porous carbon
E-Mail jwlee1@kaist.ac.kr