상세정보
학술지
Biomass-Derived Electrode for Next Generation Lithium- Ion Capacitors
- 저자
- Palanichamy Sennu, Vanchiappan Aravindan, Mahadevan Ganesan, 이영기, 이윤성
- 발행일
- 201604
- 출처
- ChemSusChem, v.9 no.8, pp.849-854
- ISSN
- 1864-5631
- 협약과제
- 15PB4600, 중대형 전고체 리튬이차전지용 유무기 하이브리드 고체전해질, 이영기
- 초록
- We report the fabrication of a carbon-based high energy density Li-ion hybrid electrochemical capacitor (Li-HEC) from low cost and eco-friendly materials. High surface area (2448짹20 m2 g-1) activated carbon (AC) is derived from the environmentally threatening plant, Prosopis juliflora, and used as the positive electrode in a Li-HEC assembly. Natural graphite is employed as negative electrode and electrochemically pre-lithiated prior to the Li-HEC fabrication. The Li-HEC delivers a specific energy of 162.3 Wh kg-1 and exhibits excellent cyclability (i.e., ~79 % of initial capacity is retained after 7000 cycles). The superior electrochemical performance of Li-HEC benefits from the tube-like unique structural features of the AC. Also, the presence of a graphitic nanocarbon network improves the ion transport, and the formed micro- and meso-porous network acts as reservoir for the accommodation of charge carriers.
- KSP 제안 키워드
- Activated carbon(AC), Biomass-derived, Charge carriers, Eco-friendly materials, Excellent cyclability, High energy density, Hybrid electrochemical capacitor, Ion transport, Li-ion, Low-cost, Meso-porous