US EPA

2457421 

Journal Article 

Nano-Sized Ni-Doped Carbon Aerogel for Supercapacitor 

Lee, Y; Jung, JiC; Park, S; Seo, J; Baeck, SH; Yoon, J; Yi, J; Song, I 

2011 

Yes 

Journal of Nanoscience and Nanotechnology
ISSN: 1533-4880
EISSN: 1533-4899 

11 

7 

6528-6532 

English 

22121750 

10.1166/jnn.2011.4371 

WOS:000293663200175 

http://dx.doi.org/10.1166/jnn.2011.4371
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Carbon aerogel was prepared by polycondensation of resorcinol with formaldehyde using sodium carbonate as a catalyst in ambient conditions. Nano-sized Ni-doped carbon aerogel was then prepared by a precipitation method in an ethanol solvent. In order to elucidate the effect of nickel content on electrochemical properties, Ni-doped carbon aerogels (21, 35, 60, and 82 wt%) were prepared and their performance for supercapacitor electrode was investigated. Electrochemical properties of Ni-doped carbon aerogel electrodes were measured by cyclic voltammetry at a scan rate of 10 mV/sec and charge/discharge test at constant current of 1 kg in 6 M KOH electrolyte. Among the samples prepared, 35 wt% Ni-doped carbon aerogel (Ni/CA-35) showed the highest capacitance (110 F/g) and excellent charge/discharge behavior. The enhanced capacitance of Ni-doped carbon aerogel was attributed to the faradaic redox reactions of nano-sized nickel oxide. Moreover, Ni-doped carbon aerogel exhibited quite stable cyclability, indicating long-term electrochemical stability. 

Carbon Aerogel; Precipitation; Nano-Sized Doping; Pseudocapacitance; Cyclability