Journal
ENERGY
Volume 128, Issue -, Pages 618-625Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.energy.2017.04.065
Keywords
Rice husk; Porous carbon; Supercapacitor; Self-activation; Energy storage
Categories
Funding
- National Natural Science Foundation of China [21573093]
- Graduate Innovation Fund of Jilin University [2015141]
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Searching low-cost porous carbon is crucial for the future development of supercapacitors in a wide application range. In this paper, rice husk derived carbon (RHC) was prepared through direct carbonization of rice husk in a tube furnace without inlet of N-2. RHC possesses relatively high pore volume, specific surface area and specific capacitance. The high specific surface area of RHC is attributed to the self-activation of rice husk by H2O,CO2 produced in the carbonization process. RHC was further treated by alkali etching to prepare a porous carbon (referred as RHPC). Owing to the removing of SiO2 in RHC, RHPC exhibits higher specific surface area and specific capacitance than RHC. (C) 2017 Elsevier Ltd. All rights reserved.
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