Journal
MATERIALS LETTERS
Volume 139, Issue -, Pages 340-343Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.matlet.2014.10.063
Keywords
Carbon materials; Porous materials; Catalysis; Supercapacitive performance
Funding
- National Science Foundation of China (NSFC) [50975247]
- Hebei Natural Science Foundation [E2014203204]
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Microporous carbide derived carbon (CDC) with both high SSA and extremely narrow pore size distribution is synthesized by chlorination or niobium carbide powder. The produced microporous CDC is catalyzed at 1000 degrees C by using Rickel nitrate as the catalyst. This treatment leads to the formation or a small amount or mesopores and slight decrease in the SSA. Electrochemical investigations show that the specific capacitance of the CDC catalyzed by nickel nitrate is almost as high as that or the pristine CDC in 6M KOH electrolyte. Furthermore, its cyclic voltammogram curves can keep a rectangular-like shape even at a scan rate or 500 mV s(-1), a significant improvement compared with that or the pristine CDC, indicating that the catalyzed CDC as an electrode material for supercapacitor exhibits superior specific capacitance and rate performance. Therefore, catalyzing CDC may be regarded as a facile and effective strategy to tune the CDC pore structure to match the applications of supercapacitor or some others. (C) 2014 Elsevier B.V. All rights reserved.
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