Synthesis of mesoporous reduced graphene oxide by Zn particles for electrodes of supercapacitor in ionic liquid electrolyte
By Jeon, Hongrae; Han, Jae Hee; Yu, Duk Man; Lee, Jang Yong; Kim, Tae-Ho; Hong, Young Taik
Published in Journal of Industrial and Engineering Chemistry
NULL
2017
Abstract
Abstract Mesoporous reduced graphene oxide (m-rGO) was synthesized by mixing Zn and graphene oxide in acidic conditions followed by ultrasonication and was investigated as a supercapacitor electrode in a 1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide (EMIM-TFSI) electrolyte. m-rGO shows a specific capacitance of 104.3 F g?1 at 1 A g?1 and a decrease in capacitance of 3% after 5000 cycles. The high performance is attributed to the significant mesopores, facilitating mass transport of the electrolyte. Thus, we report the facile synthesis of m-rGO with enhanced capacitance and durability in an ionic liquid electrolyte that has great potential for electrochemical energy storage applications.
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