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- Ruoff, Rodney S.
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Preparation of activated graphene and effect of activation parameters on electrochemical capacitance
- Author(s)
- Murali, Shanthi, Potts, Jeffrey R., Stoller, Scott, Park, Joono, Stoner, Meryl D., Zhang, Li Li, Zhu, Yanwu, Ruoff, Rodney S.
- Issued Date
- 2012-08
- Citation
- CARBON, v.50, no.10, pp.3482 - 3485
- Abstract
- Activation parameters such as temperature and the amount of potassium hydroxide (KOH) were varied during the synthesis of activated microwave-exfoliated graphite oxide (a-MEGO) and the effects of these parameters on the specific surface area of a-MEGO and electrochemical capacitance of a-MEGO electrodes were investigated. At 800 degrees C and a KOH/MEGO mass ratio of 6.5, a maximum specific surface area of 3100 m(2)/g was obtained and a high specific capacitance of 172 F/g (at 1 A/g constant current and 3.5 V maximal voltage) was measured in a two-electrode cell with a-MEGO electrodes in an organic electrolyte.
- Publisher
- PERGAMON-ELSEVIER SCIENCE LTD
- ISSN
- 0008-6223
- Keyword
- CHEMICAL ACTIVATION, ULTRACAPACITORS, NAOH, KOH
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