supercapacitors;
graphene film;
ionic liquid eutectic;
working temperature window;
HIGH-PERFORMANCE;
NEXT-GENERATION;
ENERGY-STORAGE;
RESTACKING;
D O I:
10.1016/j.electacta.2015.12.097
中图分类号:
O646 [电化学、电解、磁化学];
学科分类号:
081704 ;
摘要:
Compact graphene films were prepared and electrochemically tested at various temperatures in a eutectic of ionic liquid mixture (1: 1 by weight or mole N-methyl-N-propylpiperidinium bis (fluorosulfonyl) imide and N-butyl-N-methylpyrrolidinium bis(fluorosulfonyl) imide) electrolyte. A large temperature window from -30 degrees C to 80 degrees C was achieved together with a large potential window of 3.5 V at room temperature and below. A maximum gravimetric capacitance of 175 F.g(-1) (85 mAh.g(-1)) was obtained at 80 degrees C. 130 F.g(-1) (63 mAh.g(-1)) and 100 F.g(-1) (49 mAh.g(-1)) were still delivered at -20 degrees C and -30 degrees C respectively. Besides, a volumetric capacitance of 50 F.cm(-3) was achieved with a thick graphene film (60 mm). The outstanding performance of such compact graphene film in the eutectic ionic liquid mixture electrolyte makes it a promising alternative to activated carbon for supercapacitor applications, especially under extreme temperature conditions. (c) 2016 Published by Elsevier Ltd.
机构:
Chinese Acad Sci, Inst Elect Engn, Beijing 100190, Peoples R China
Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R ChinaChinese Acad Sci, Inst Elect Engn, Beijing 100190, Peoples R China
Chen, Yao
Zhang, Xiong
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Chinese Acad Sci, Inst Elect Engn, Beijing 100190, Peoples R ChinaChinese Acad Sci, Inst Elect Engn, Beijing 100190, Peoples R China
Zhang, Xiong
Zhang, Dacheng
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机构:
Chinese Acad Sci, Inst Elect Engn, Beijing 100190, Peoples R China
Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R ChinaChinese Acad Sci, Inst Elect Engn, Beijing 100190, Peoples R China
Zhang, Dacheng
Ma, Yanwei
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机构:
Chinese Acad Sci, Inst Elect Engn, Beijing 100190, Peoples R ChinaChinese Acad Sci, Inst Elect Engn, Beijing 100190, Peoples R China
机构:
Natl Inst Mat Sci, 1-2-1 Sengen, Tsukuba, Ibaraki 3050047, Japan
Univ Tsukuba, Doctoral Program Mat Sci & Engn, 1-1-1 Tennodai, Tsukuba, Ibaraki 3050006, JapanNatl Inst Mat Sci, 1-2-1 Sengen, Tsukuba, Ibaraki 3050047, Japan
Li, Jing
Tang, Jie
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Natl Inst Mat Sci, 1-2-1 Sengen, Tsukuba, Ibaraki 3050047, Japan
Univ Tsukuba, Doctoral Program Mat Sci & Engn, 1-1-1 Tennodai, Tsukuba, Ibaraki 3050006, JapanNatl Inst Mat Sci, 1-2-1 Sengen, Tsukuba, Ibaraki 3050047, Japan
Tang, Jie
Yuan, Jinshi
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Natl Inst Mat Sci, 1-2-1 Sengen, Tsukuba, Ibaraki 3050047, JapanNatl Inst Mat Sci, 1-2-1 Sengen, Tsukuba, Ibaraki 3050047, Japan
Yuan, Jinshi
Zhang, Kun
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Natl Inst Mat Sci, 1-2-1 Sengen, Tsukuba, Ibaraki 3050047, JapanNatl Inst Mat Sci, 1-2-1 Sengen, Tsukuba, Ibaraki 3050047, Japan
Zhang, Kun
Shao, Qingguo
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Natl Inst Mat Sci, 1-2-1 Sengen, Tsukuba, Ibaraki 3050047, JapanNatl Inst Mat Sci, 1-2-1 Sengen, Tsukuba, Ibaraki 3050047, Japan
Shao, Qingguo
Sun, Yige
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Natl Inst Mat Sci, 1-2-1 Sengen, Tsukuba, Ibaraki 3050047, Japan
Univ Tsukuba, Doctoral Program Mat Sci & Engn, 1-1-1 Tennodai, Tsukuba, Ibaraki 3050006, JapanNatl Inst Mat Sci, 1-2-1 Sengen, Tsukuba, Ibaraki 3050047, Japan
Sun, Yige
Qin, Lu-Chang
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机构:
Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Ningbo 315201, Zhejiang, Peoples R China
Univ N Carolina, Dept Phys & Astron, Chapel Hill, NC 27599 USANatl Inst Mat Sci, 1-2-1 Sengen, Tsukuba, Ibaraki 3050047, Japan
机构:
Henan Normal Univ, Collaborat Innovat Ctr Henan Prov Green Mfg Fine C, Sch Chem & Chem Engn, Key Lab Green Chem Media & React,Minist Educ, Xinxiang 453007, Henan, Peoples R ChinaHenan Normal Univ, Collaborat Innovat Ctr Henan Prov Green Mfg Fine C, Sch Chem & Chem Engn, Key Lab Green Chem Media & React,Minist Educ, Xinxiang 453007, Henan, Peoples R China
Li, Hua
Hu, Xiaodong
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Henan Normal Univ, Collaborat Innovat Ctr Henan Prov Green Mfg Fine C, Sch Chem & Chem Engn, Key Lab Green Chem Media & React,Minist Educ, Xinxiang 453007, Henan, Peoples R ChinaHenan Normal Univ, Collaborat Innovat Ctr Henan Prov Green Mfg Fine C, Sch Chem & Chem Engn, Key Lab Green Chem Media & React,Minist Educ, Xinxiang 453007, Henan, Peoples R China
Hu, Xiaodong
Wang, Chunfeng
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机构:
Henan Normal Univ, Collaborat Innovat Ctr Henan Prov Green Mfg Fine C, Sch Chem & Chem Engn, Key Lab Green Chem Media & React,Minist Educ, Xinxiang 453007, Henan, Peoples R ChinaHenan Normal Univ, Collaborat Innovat Ctr Henan Prov Green Mfg Fine C, Sch Chem & Chem Engn, Key Lab Green Chem Media & React,Minist Educ, Xinxiang 453007, Henan, Peoples R China
Wang, Chunfeng
Chen, Yujuan
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Henan Normal Univ, Collaborat Innovat Ctr Henan Prov Green Mfg Fine C, Sch Chem & Chem Engn, Key Lab Green Chem Media & React,Minist Educ, Xinxiang 453007, Henan, Peoples R ChinaHenan Normal Univ, Collaborat Innovat Ctr Henan Prov Green Mfg Fine C, Sch Chem & Chem Engn, Key Lab Green Chem Media & React,Minist Educ, Xinxiang 453007, Henan, Peoples R China
Chen, Yujuan
Zhuo, Kelei
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机构:
Henan Normal Univ, Collaborat Innovat Ctr Henan Prov Green Mfg Fine C, Sch Chem & Chem Engn, Key Lab Green Chem Media & React,Minist Educ, Xinxiang 453007, Henan, Peoples R ChinaHenan Normal Univ, Collaborat Innovat Ctr Henan Prov Green Mfg Fine C, Sch Chem & Chem Engn, Key Lab Green Chem Media & React,Minist Educ, Xinxiang 453007, Henan, Peoples R China
Zhuo, Kelei
Wang, Jianji
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机构:
Henan Normal Univ, Collaborat Innovat Ctr Henan Prov Green Mfg Fine C, Sch Chem & Chem Engn, Key Lab Green Chem Media & React,Minist Educ, Xinxiang 453007, Henan, Peoples R ChinaHenan Normal Univ, Collaborat Innovat Ctr Henan Prov Green Mfg Fine C, Sch Chem & Chem Engn, Key Lab Green Chem Media & React,Minist Educ, Xinxiang 453007, Henan, Peoples R China