Journal
JOURNAL OF POWER SOURCES
Volume 310, Issue -, Pages 145-153Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jpowsour.2016.01.052
Keywords
Silk cocoon; Nitrogen-doped porous carbon; Ultrahigh specific surface area; Supercapacitors
Funding
- National Natural Science Foundation of China [U1501242, 21201065, 21371061, 21571066]
- Key Program of Science Technology Innovation Foundation of Universities of Guangdong Province [cxzd1113]
- key Laboratory of Functional Inorganic Materials Chemistry (Heilongjiang University), Ministry of Education
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Owing to its abundant nitrogen content, silk cocoon is a promising precursor for the synthesis of Nitrogen-doped porous carbon (N-PC). Using a simple staged KOH activation, the prepared sample displays particular nanostructure with ultrahigh specific surface area (3841 m(2) g(-1)) and appropriate pore size, providing favorable pathways for transportation and penetration of electrolyte ions. Additionally, the doped nitrogen atoms ensure the samples with pseudocapacitive behavior. Those special characteristics endow N-PCs with high capacity, low resistance, and long-term stability, indicating a wonderful potential for application in energy-storage devices. (C) 2016 Elsevier B.V. All rights reserved.
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