Ruthenium doped carbon aerogel with CO 2 surface activation for enhanced electrochemical capacitance
| Autor: | Sushmita Bhartiya, D.K. Kohli, M. K. Singh, Ashish Kumar Singh, Rashmi Singh, Pradeep Kumar Gupta |
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| Rok vydání: | 2017 |
| Předmět: |
Supercapacitor
Materials science Inorganic chemistry General Physics and Astronomy chemistry.chemical_element Aerogel 02 engineering and technology Resorcinol 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Capacitance Ruthenium oxide 0104 chemical sciences Ruthenium chemistry.chemical_compound chemistry medicine General Materials Science 0210 nano-technology Carbon Activated carbon medicine.drug |
| Zdroj: | Current Applied Physics. 17:885-889 |
| ISSN: | 1567-1739 |
| DOI: | 10.1016/j.cap.2017.03.003 |
| Popis: | With the aim of enhancement of electrochemical capacitance, CO 2 activation of carbon aerogel (CA) prepared by polycondensation of resorcinol with formaldehyde was performed to obtain activated carbon aerogel (ACA) having improved surface area properties. Ruthenium oxide nano-particles were loaded by impregnation method for utilizing pseudo-capacitive property of ruthenium oxide (RuO 2 ) and the effect of activation treatment was studied. RuO 2 loading of 20% by weight was accomplished in CA and ACA to synthesize RuO 2 doped carbon aerogel (CA/RuO 2 ) and activated carbon aerogel (ACA/RuO 2 ). While the specific capacitance of carbon aerogel improved from 95 to 153 F/g on activation, RuO 2 loading further led to enhancement in capacitance and specific capacitance of 308 F/g was obtained for ACA/RuO 2 . The studies being important for Ru economy, showed the influence of surface area enhancement of base matrix in achieving high specific capacitance. |
| Databáze: | OpenAIRE |
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