서지주요정보
복합 양극의 카본블랙/황 조성비에 따른 리튬-황 2차 전지 성능 연구 = Study on performance of secondary lithium/sulfur battery with various carbon black/sulfur ratios of composite cathode
서명 / 저자 복합 양극의 카본블랙/황 조성비에 따른 리튬-황 2차 전지 성능 연구 = Study on performance of secondary lithium/sulfur battery with various carbon black/sulfur ratios of composite cathode / 연진희.
저자명 연진희 ; Yeon, Jin-Hee
발행사항 [대전 : 한국과학기술원, 2001].
Online Access 원문보기 원문인쇄

소장정보

등록번호

8011849

소장위치/청구기호

학술문화관(문화관) 보존서고

MCHE 01020

SMS전송

도서상태

이용가능

대출가능

반납예정일

초록정보

Lithium/sulfur polymer batteries(LSPB) consist of sulfur composite cathode, electrolyte and lithium anode. We made a gel type electrolyte of PEO polymer with tetraglyme (Tetra ethylene glycol dimethyl ether) as a plasticizer. The ionic conductivity of polymer electrolyte is $1.42\times10^{-4}S/cm$ and it’s electrochemical stable window is 0.7-4V. The OCV(open circuit voltage) of LSPB is 2.5V, so the gel type polymer electrolyte is appropriate for LSPB. The interfacial resistance between polymer electrolyte and lithium metal doesn’t increase after 500 hours in use. We made composite cathode slurry by using a sublimed sulfur, a carbon black, a PEO, an acetonitrile and $LiClO_4$. Apparent viscosity of composite cathode slurry made by attrition mill approaches a constant value in 6 hours. The sulfur is well-dispersed in composite cathode. S30 (S/PEO/Carbon black=30/35/35wt%), S40 (S/PEO/CB=40/35/25wt%) have a higher specific capacity than S50 (S/PEO/Carbon black=50/35/15wt%), S60 (S/PEO/Carbon black=60/35/5wt%) do, and good cyclability. S30 and S40 shows a low interfacial resistance with electrolyte and high mobility of ions. Redox reactions for S30 and S40 are more reversible than those for S50 and S60. Although the composition of cathode is same, discharge capacity decreases at a high current rate and, the redox reaction is difficult at a high scan rate in CV experiment.

서지기타정보

서지기타정보
청구기호 {MCHE 01020
형태사항 vi, 54 p. : 삽도 ; 26 cm
언어 한국어
일반주기 저자명의 영문표기 : Jin-Hee Yeon
지도교수의 한글표기 : 정인재
지도교수의 영문표기 : In-Jae Chung
학위논문 학위논문(석사) - 한국과학기술원 : 화학공학과,
서지주기 참고문헌 : p. 52-54
주제 전지
조성비
복합양극
battery
composition ratio
composite cathode
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