논문 상세보기

독립형 반고체 복합 전해질을 적용한 고온 수퍼커패시터 KCI 등재 SCOPUS

High Temperature Supercapacitor with Free Standing Quasi-solid Composite Electrolytes

  • 언어KOR
  • URLhttps://db.koreascholar.com/Article/Detail/366505
구독 기관 인증 시 무료 이용이 가능합니다. 4,000원
한국재료학회지 (Korean Journal of Materials Research)
한국재료학회 (Materials Research Society Of Korea)
초록

Supercapacitors are attracting much attention in sensor, military and space applications due to their excellent thermal stability and non-explosion. The ionic liquid is more thermally stable than other electrolytes and can be used as a high temperature electrolyte, but it is not easy to realize a high temperature energy device because the separator shrinks at high temperature. Here, we report a study on electrochemical supercapacitors using a composite electrolyte film that does not require a separator. The composite electrolyte is composed of thermoplastic polyurethane, ionic liquid and fumed silica nanoparticles, and it acts as a separator as well as an electrolyte. The silica nanoparticles at the optimum mass concentration of 4wt% increase the ionic conductivity of the composite electrolyte and shows a low interfacial resistance. The 5 wt% polyurethane in the composite electrolyte exhibits excellent electrochemical properties. At 175 ℃, the capacitance of the supercapacitor using our free standing composite electrolyte is 220 F/g, which is 25 times higher than that at room temperature. This study has many potential applications in the electrolyte of next generation energy storage devices.

목차
Abstracts
 1. 서 론
 2. 실험방법
  2.1 복합 전해질 제조 및 물성 평가
  2.2 수퍼커패시터의 제작 및 전기화학적 성능 평가
 3. 결과 및 고찰
 4. 결 론
 References
저자
  • 김동원(국립경남과학기술대학교 에너지공학과) | Dong Won Kim (Department of Energy Engineering, Gyeongnam National University of Science and Technology)
  • 정현영(국립경남과학기술대학교 에너지공학과) | Hyunyoung Jung (Department of Energy Engineering, Gyeongnam National University of Science and Technology) Corresponding author