abs

학술발표회초록보기

초록문의 abstract@kcsnet.or.kr

결제문의 member@kcsnet.or.kr

현재 가능한 작업은 아래와 같습니다.
  • 02월 28일 19시 이후 : 초록수정 불가능, 일정확인 및 검색만 가능

제111회 대한화학회 학술발표회, 총회 및 기기전시회 안내 Graphene Oxide-Coated Polymer Sulfur Materials for Lithium Sulfur Batteries

등록일
2013년 2월 14일 16시 45분 53초
접수번호
1244
발표코드
MAT.P-1047 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
발표시간
4월 17일 (수요일) 16:00~19:00
발표형식
포스터
발표분야
재료화학
저자 및
공동저자
문준희
서울대학교 화학과, Korea
Sulfur has a high specific capacity of 1672 mAh/g as one of the promising lithium secondary battery cathode materials than traditional metal oxides/phosphates cathodes. However, it has been faced with the rapid capacity fading due to the dissolution of polysulfides and the precipitation of lithium polysulfides. To make up for the weak points in lithium sulfur batteries, many researchers have studied various methods of overcoming these problems, controlling of carbon coating and electrolyte. In this study, the graphene oxide-coated polymer sulfur composites have an important role in accommodating volume expansion of the coated sulfur particles during discharge, trapping soluble polysulfide intermediates, and rendering the sulfur particles electrically conducting. The resulting these materials showed high specific capacity and good cycle ability up to ~ 700 mAh/g over more than 100 cycles. Moreover, the introduction of LiNO3 additive seems to have improved the coulombic efficiency over 95% at 0.2 C.

상단으로