期刊
CHEMISTRYSELECT
卷 2, 期 18, 页码 5051-5058出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/slct.201700574
关键词
Activated carbon; Bio-waste; Lithium-Ion Capacitors; Orange peel; Pre-lithiated graphite; Supercapacitors
资金
- Agency for Science, Technology and Research (A* STAR) / Singapore International Graduate Award (SINGA)
- Nanyang Technological University, Singapore
- Hebrew University of Jerusalem (HUJ, Israel)
- Nanyang Technological University (NTU, Singapore)
- CREATE (Campus for Research Excellence and Technological Enterprise)
- National Research Foundation of Singapore (NRF, Singapore)
Activated carbon (AC) with high surface area (1,901 m(2) g(-1)) is synthesized from bio-waste orange (Citrus sinensis) peel for fabrication of high specific energy lithium ion capacitors (LICs). The composition, structure and electrochemical properties of orange peel derived AC (OP-AC) are characterized by elemental analyzer, field emission-scanning electron microscopy, X-ray diffraction, Raman spectroscopy, X-ray photoelectron spectroscopy, cyclic voltammogram, charge-discharge and impedance studies. Fabricated LIC using the high surface area OP-AC with pre-lithiated graphite (LiC6) delivered specific energy of similar to 106 Wh kg(-1). In addition, LIC configuration with Li4Ti5O12 was also fabricated and observed to be capable of delivering the specific energy of similar to 35 Wh kg(-1). Symmetric configuration of OP-AC with aqueous and organic solutions was also made for comparison purpose. A systematic improvement from the specific energy of similar to 7 to 106 Wh kg(-1) is noted from aqueous to LIC assembly. The findings open up the possibility of developing high specific energy LICs from abundant, low-cost, sustainable biomass waste.
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