期刊
JOURNAL OF ALLOYS AND COMPOUNDS
卷 693, 期 -, 页码 1297-1304出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2016.10.015
关键词
Pine cone flowers; Pyrolysis; Porous carbon; Counter electrode; Dye-sensitized solar cells
资金
- National Research Foundation of Korea grant - Korea government (MSIP) [2013R1A2A2A01068407]
- National Research Foundation of Korea [2013R1A2A2A01068407, 22A20130012188] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
Honeycomb-like activated porous carbon (HPC) powder with meso/macropore structures was successfully prepared via chemical activation and pyrolysis processes under inert gas atmosphere. Herein, the naturally available pine cone flowers with abundant carbon contents were employed as a biomass to synthesize the HPC sample. The structure and morphology of the HPC powder were characterized by various physicochemical techniques. Moreover, the as-prepared HPC sample was uniformly coated on fluorine doped tin oxide glass using a smooth brush and used as a cost-effective counter electrode (CE) in dye-sensitized solar cells (DSSCs). Under AM1.5G illumination, the fabricated DSSCs with HPC-based CE exhibited a high short-circuit current density (J(SC)) of 13.51 mA/cm(2) and an excellent power conversion efficiency (PCE) of 4.98%, which is attributed to the high specific surface area and hierarchical porous property of the HPC sample. The obtained results were improved compared to the commercially available activated carbon-based CE in DSSCs (J(SC) = 12.11 mA/cm(2) and PCE = 4.45%). This facile fabrication of highly porous activated carbon-based materials from the biomass can be utilized as a high-performance electrode material in DSSCs and energy storage device applications. (C) 2016 Elsevier B.V. All rights reserved.
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