Synthesis of mesoporous reduced graphene oxide by Zn particles for electrodes of supercapacitor in ionic liquid electrolyte

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• 作者：Hongrae Jeon^a ; ^b ; Jae Hee Han^a ; Duk Man Yu^a ; Jang Yong Lee^a ; Tae-Ho Kim^a ; ^{thkim@krict.re.kr} ; Young Taik Hong^a
• 关键词：Supercapacitors ; Mesopores ; Reduced graphene ; Zinc particles ; Ionic liquid electrolytes
• 刊名：Journal of Industrial and Engineering Chemistry
• 出版年：2017
• 出版时间：25 January 2017
• 年：2017
• 卷：45
• 期：Complete
• 页码：105-110
• 全文大小：1488 K
• 卷排序：45

文摘

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.