In this work, we present the synthesis of low cost carbon nanosheets derived from expanded graphite dispersed in Polyvinylpyrrolidone, subsequently activated in KOH and finally carbonized in Ar/H-2 atmosphere. Interconnected sheet-like structure with low concentration of oxygen (9.0 at%) and a specific surface area of 457 m(2) g(-1) was obtained. The electrochemical characterization of the carbon material as supercapacitor electrode in a 2-electrode configuration shows high specific capacitance of 337 F g(-1) at a current density of 0.5 A g(-1) as well as high energy density of 37.9 Wh kg(-1) at a power density of 450 W kg(-1). This electrical double layer capacitor electrode also exhibits excellent stability after floating test for 120 h in 6 M KOH aqueous electrolyte. These results suggest that this activated expanded graphite (AEG) material has great potential for high performance electrode in energy storage applications. Crown Copyright (C) 2016 Published by Elsevier B.V. All rights reserved.
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Wuhan Inst Technol, Sch Chem & Environm Engn, Key Lab Biomass Based Mat Environm & Energy Petr &, Wuhan 430205, Peoples R ChinaWuhan Inst Technol, Sch Chem & Environm Engn, Key Lab Biomass Based Mat Environm & Energy Petr &, Wuhan 430205, Peoples R China
Mei, Yiyi
Liu, Shuaibing
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Wuhan Inst Technol, Sch Chem & Environm Engn, Key Lab Biomass Based Mat Environm & Energy Petr &, Wuhan 430205, Peoples R ChinaWuhan Inst Technol, Sch Chem & Environm Engn, Key Lab Biomass Based Mat Environm & Energy Petr &, Wuhan 430205, Peoples R China
Liu, Shuaibing
Wu, Ling
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Wuhan Univ Sci & Technol, Sch Chem & Chem Engn, Hubei Prov Key Lab Coal Convers & New Carbon Mat, Wuhan 430081, Peoples R ChinaWuhan Inst Technol, Sch Chem & Environm Engn, Key Lab Biomass Based Mat Environm & Energy Petr &, Wuhan 430205, Peoples R China
Wu, Ling
Zhou, Binghua
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Jiangxi Normal Univ, Inst Adv Mat, 99 Ziyang Ave, Nanchang 330022, Peoples R ChinaWuhan Inst Technol, Sch Chem & Environm Engn, Key Lab Biomass Based Mat Environm & Energy Petr &, Wuhan 430205, Peoples R China
Zhou, Binghua
Wang, Zhipeng
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Jiangxi Normal Univ, Inst Adv Mat, 99 Ziyang Ave, Nanchang 330022, Peoples R ChinaWuhan Inst Technol, Sch Chem & Environm Engn, Key Lab Biomass Based Mat Environm & Energy Petr &, Wuhan 430205, Peoples R China
Wang, Zhipeng
Huang, Zheng-Hong
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Tsinghua Univ, Sch Mat Sci & Engn, Lab Adv Mat, Beijing 100084, Peoples R ChinaWuhan Inst Technol, Sch Chem & Environm Engn, Key Lab Biomass Based Mat Environm & Energy Petr &, Wuhan 430205, Peoples R China
Huang, Zheng-Hong
Zhu, Yuanyuan
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Wuhan Inst Technol, Sch Chem & Environm Engn, Key Lab Biomass Based Mat Environm & Energy Petr &, Wuhan 430205, Peoples R ChinaWuhan Inst Technol, Sch Chem & Environm Engn, Key Lab Biomass Based Mat Environm & Energy Petr &, Wuhan 430205, Peoples R China
Zhu, Yuanyuan
Wang, Ming-Xi
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Wuhan Inst Technol, Sch Chem & Environm Engn, Key Lab Biomass Based Mat Environm & Energy Petr &, Wuhan 430205, Peoples R ChinaWuhan Inst Technol, Sch Chem & Environm Engn, Key Lab Biomass Based Mat Environm & Energy Petr &, Wuhan 430205, Peoples R China
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Korea Univ, Dept Mat Sci & Engn, 145 Anam Ro, Seoul 02841, South KoreaKorea Univ, Dept Mat Sci & Engn, 145 Anam Ro, Seoul 02841, South Korea
Park, Jinwoo
Yoo, Young-Eun
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Korea Univ, Dept Mat Sci & Engn, 145 Anam Ro, Seoul 02841, South KoreaKorea Univ, Dept Mat Sci & Engn, 145 Anam Ro, Seoul 02841, South Korea
Yoo, Young-Eun
Mai, Liqiang
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Wuhan Univ Technol, Int Sch Mat Sci & Engn, State Key Lab Adv Technol Mat Synth & Proc, 122 Luoshi Rd, Wuhan 430070, Hubei, Peoples R ChinaKorea Univ, Dept Mat Sci & Engn, 145 Anam Ro, Seoul 02841, South Korea
Mai, Liqiang
Kim, Woong
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Korea Univ, Dept Mat Sci & Engn, 145 Anam Ro, Seoul 02841, South KoreaKorea Univ, Dept Mat Sci & Engn, 145 Anam Ro, Seoul 02841, South Korea
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Yancheng Inst Technol, Sch Text & Clothing, Yancheng, Jiangsu, Peoples R ChinaYancheng Inst Technol, Sch Text & Clothing, Yancheng, Jiangsu, Peoples R China
Gao, Dawei
Wang, Lili
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Yancheng Inst Technol, Sch Text & Clothing, Yancheng, Jiangsu, Peoples R ChinaYancheng Inst Technol, Sch Text & Clothing, Yancheng, Jiangsu, Peoples R China
Wang, Lili
Yu, Jian
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Yancheng Inst Technol, Sch Text & Clothing, Yancheng, Jiangsu, Peoples R China
Jiangnan Univ, Minist Educ, China Sch Mat, Key Lab Ecotext, Wuxi, Jiangsu, Peoples R ChinaYancheng Inst Technol, Sch Text & Clothing, Yancheng, Jiangsu, Peoples R China
Yu, Jian
Wei, Qufu
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Jiangnan Univ, Minist Educ, China Sch Mat, Key Lab Ecotext, Wuxi, Jiangsu, Peoples R ChinaYancheng Inst Technol, Sch Text & Clothing, Yancheng, Jiangsu, Peoples R China
Wei, Qufu
Wang, Chunxia
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Yancheng Inst Technol, Sch Text & Clothing, Yancheng, Jiangsu, Peoples R ChinaYancheng Inst Technol, Sch Text & Clothing, Yancheng, Jiangsu, Peoples R China
Wang, Chunxia
Liu, Guoliang
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Yancheng Inst Technol, Sch Text & Clothing, Yancheng, Jiangsu, Peoples R ChinaYancheng Inst Technol, Sch Text & Clothing, Yancheng, Jiangsu, Peoples R China