LiCoO2 (LCO) usually can deliver high energy density but low power density in Li-ion batteries (LIBs). Whether LCO could be used as electrode material for high-performance supercapacitors is dependent on promoting its power density. Owing to Faradaic redox reactions taking place on its surfaces or inside crystals through ion intercalation/deintercalation from the surfaces, increasing the specific area of LCO is a key factor to promote its rate capability. Herein, we report a facile strategy to prepare LCO nano-flakes with high specific area exceeding that of currently used micro-scale particles in LIBs. LCO as a nano-flake structure is expected to have a high fraction of Li atom exposure, which benefits fast redox reactions taking place on the surfaces. An LCO-based electrode exhibits an excellent specific capacitance of 581.3 F g(-1) at 0.5 A g(-1), high power density of 2262 W kg(-1) at an energy density of 41.0 Wh kg(-1), and good cycling stability (83.9% capacitance retention at 6 A g(-1) after 2000 cycles) in LiCl aqueous electrolyte. Faradaic redox behaviors have been analyzed, indicating an ideal diffusion-controlled process. Moreover, a full solid-state symmetric supercapacitor is assembled using LCO nano-flake-based electrodes, which presents good performance with light weight and flexibility. Impressively, three charged supercapacitors in series can light 100 green light emitting diodes for 14 min. LCO in nano-flake structure form with high power density could be an excellent material for superior supercapacitors.
机构:
Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R ChinaChinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China
Liu, Chang
Li, Feng
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Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R ChinaChinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China
Li, Feng
Ma, Lai-Peng
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Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R ChinaChinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China
Ma, Lai-Peng
Cheng, Hui-Ming
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Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R ChinaChinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China
机构:
Huazhong Univ Sci & Technol, Sch Mat Sci & Engn, State Key Lab Mat Proc & Die & Mould Technol, Wuhan 430074, Peoples R ChinaHuazhong Univ Sci & Technol, Sch Mat Sci & Engn, State Key Lab Mat Proc & Die & Mould Technol, Wuhan 430074, Peoples R China
Liu, Yang
Qiao, Yun
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Huazhong Univ Sci & Technol, Sch Mat Sci & Engn, State Key Lab Mat Proc & Die & Mould Technol, Wuhan 430074, Peoples R ChinaHuazhong Univ Sci & Technol, Sch Mat Sci & Engn, State Key Lab Mat Proc & Die & Mould Technol, Wuhan 430074, Peoples R China
Qiao, Yun
Zhang, Wu-Xing
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Huazhong Univ Sci & Technol, Sch Mat Sci & Engn, State Key Lab Mat Proc & Die & Mould Technol, Wuhan 430074, Peoples R ChinaHuazhong Univ Sci & Technol, Sch Mat Sci & Engn, State Key Lab Mat Proc & Die & Mould Technol, Wuhan 430074, Peoples R China
Zhang, Wu-Xing
Li, Zhen
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Huazhong Univ Sci & Technol, Sch Mat Sci & Engn, State Key Lab Mat Proc & Die & Mould Technol, Wuhan 430074, Peoples R ChinaHuazhong Univ Sci & Technol, Sch Mat Sci & Engn, State Key Lab Mat Proc & Die & Mould Technol, Wuhan 430074, Peoples R China
Li, Zhen
Hu, Xian-Luo
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Huazhong Univ Sci & Technol, Sch Mat Sci & Engn, State Key Lab Mat Proc & Die & Mould Technol, Wuhan 430074, Peoples R ChinaHuazhong Univ Sci & Technol, Sch Mat Sci & Engn, State Key Lab Mat Proc & Die & Mould Technol, Wuhan 430074, Peoples R China
Hu, Xian-Luo
Yuan, Li-Xia
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Huazhong Univ Sci & Technol, Sch Mat Sci & Engn, State Key Lab Mat Proc & Die & Mould Technol, Wuhan 430074, Peoples R ChinaHuazhong Univ Sci & Technol, Sch Mat Sci & Engn, State Key Lab Mat Proc & Die & Mould Technol, Wuhan 430074, Peoples R China
Yuan, Li-Xia
Huang, Yun-Hui
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Huazhong Univ Sci & Technol, Sch Mat Sci & Engn, State Key Lab Mat Proc & Die & Mould Technol, Wuhan 430074, Peoples R ChinaHuazhong Univ Sci & Technol, Sch Mat Sci & Engn, State Key Lab Mat Proc & Die & Mould Technol, Wuhan 430074, Peoples R China
机构:
Islamic Azad Univ, Cent Tehran Branch, Young Researchers & Elite Club, Tehran, IranIslamic Azad Univ, Cent Tehran Branch, Young Researchers & Elite Club, Tehran, Iran
Moosavifard, Seyyed Ebrahim
Shamsi, Javad
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Univ Tehran, Dept Chem, Tehran, IranIslamic Azad Univ, Cent Tehran Branch, Young Researchers & Elite Club, Tehran, Iran
Shamsi, Javad
Fani, Saeed
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Univ Sci & Technol, Dept Chem, Tehran, IranIslamic Azad Univ, Cent Tehran Branch, Young Researchers & Elite Club, Tehran, Iran
Fani, Saeed
Kadkhodazade, Saeed
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Chem & Chem Engn Res Ctr Iran, Tehran, IranIslamic Azad Univ, Cent Tehran Branch, Young Researchers & Elite Club, Tehran, Iran
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CSIR Cent Electrochem Res Inst, Chennai Unit, Madras 600113, Tamil Nadu, IndiaCSIR Cent Electrochem Res Inst, Chennai Unit, Madras 600113, Tamil Nadu, India
Sathiya, M.
Prakash, A. S.
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CSIR Cent Electrochem Res Inst, Chennai Unit, Madras 600113, Tamil Nadu, IndiaCSIR Cent Electrochem Res Inst, Chennai Unit, Madras 600113, Tamil Nadu, India
Prakash, A. S.
Ramesha, K.
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CSIR Cent Electrochem Res Inst, Chennai Unit, Madras 600113, Tamil Nadu, IndiaCSIR Cent Electrochem Res Inst, Chennai Unit, Madras 600113, Tamil Nadu, India
Ramesha, K.
Tarascon, J-M.
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机构:
Univ Picardie Jules Verne, Lab React & Chim Solides, CNRS UMR 6007, F-80039 Amiens, FranceCSIR Cent Electrochem Res Inst, Chennai Unit, Madras 600113, Tamil Nadu, India
机构:
Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R ChinaChinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China
Liu, Chang
Li, Feng
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Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R ChinaChinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China
Li, Feng
Ma, Lai-Peng
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Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R ChinaChinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China
Ma, Lai-Peng
Cheng, Hui-Ming
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Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R ChinaChinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China
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Huazhong Univ Sci & Technol, Sch Mat Sci & Engn, State Key Lab Mat Proc & Die & Mould Technol, Wuhan 430074, Peoples R ChinaHuazhong Univ Sci & Technol, Sch Mat Sci & Engn, State Key Lab Mat Proc & Die & Mould Technol, Wuhan 430074, Peoples R China
Liu, Yang
Qiao, Yun
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Huazhong Univ Sci & Technol, Sch Mat Sci & Engn, State Key Lab Mat Proc & Die & Mould Technol, Wuhan 430074, Peoples R ChinaHuazhong Univ Sci & Technol, Sch Mat Sci & Engn, State Key Lab Mat Proc & Die & Mould Technol, Wuhan 430074, Peoples R China
Qiao, Yun
Zhang, Wu-Xing
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Huazhong Univ Sci & Technol, Sch Mat Sci & Engn, State Key Lab Mat Proc & Die & Mould Technol, Wuhan 430074, Peoples R ChinaHuazhong Univ Sci & Technol, Sch Mat Sci & Engn, State Key Lab Mat Proc & Die & Mould Technol, Wuhan 430074, Peoples R China
Zhang, Wu-Xing
Li, Zhen
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Huazhong Univ Sci & Technol, Sch Mat Sci & Engn, State Key Lab Mat Proc & Die & Mould Technol, Wuhan 430074, Peoples R ChinaHuazhong Univ Sci & Technol, Sch Mat Sci & Engn, State Key Lab Mat Proc & Die & Mould Technol, Wuhan 430074, Peoples R China
Li, Zhen
Hu, Xian-Luo
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Huazhong Univ Sci & Technol, Sch Mat Sci & Engn, State Key Lab Mat Proc & Die & Mould Technol, Wuhan 430074, Peoples R ChinaHuazhong Univ Sci & Technol, Sch Mat Sci & Engn, State Key Lab Mat Proc & Die & Mould Technol, Wuhan 430074, Peoples R China
Hu, Xian-Luo
Yuan, Li-Xia
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Huazhong Univ Sci & Technol, Sch Mat Sci & Engn, State Key Lab Mat Proc & Die & Mould Technol, Wuhan 430074, Peoples R ChinaHuazhong Univ Sci & Technol, Sch Mat Sci & Engn, State Key Lab Mat Proc & Die & Mould Technol, Wuhan 430074, Peoples R China
Yuan, Li-Xia
Huang, Yun-Hui
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Huazhong Univ Sci & Technol, Sch Mat Sci & Engn, State Key Lab Mat Proc & Die & Mould Technol, Wuhan 430074, Peoples R ChinaHuazhong Univ Sci & Technol, Sch Mat Sci & Engn, State Key Lab Mat Proc & Die & Mould Technol, Wuhan 430074, Peoples R China
机构:
Islamic Azad Univ, Cent Tehran Branch, Young Researchers & Elite Club, Tehran, IranIslamic Azad Univ, Cent Tehran Branch, Young Researchers & Elite Club, Tehran, Iran
Moosavifard, Seyyed Ebrahim
Shamsi, Javad
论文数: 0引用数: 0
h-index: 0
机构:
Univ Tehran, Dept Chem, Tehran, IranIslamic Azad Univ, Cent Tehran Branch, Young Researchers & Elite Club, Tehran, Iran
Shamsi, Javad
Fani, Saeed
论文数: 0引用数: 0
h-index: 0
机构:
Univ Sci & Technol, Dept Chem, Tehran, IranIslamic Azad Univ, Cent Tehran Branch, Young Researchers & Elite Club, Tehran, Iran
Fani, Saeed
Kadkhodazade, Saeed
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h-index: 0
机构:
Chem & Chem Engn Res Ctr Iran, Tehran, IranIslamic Azad Univ, Cent Tehran Branch, Young Researchers & Elite Club, Tehran, Iran
机构:
CSIR Cent Electrochem Res Inst, Chennai Unit, Madras 600113, Tamil Nadu, IndiaCSIR Cent Electrochem Res Inst, Chennai Unit, Madras 600113, Tamil Nadu, India
Sathiya, M.
Prakash, A. S.
论文数: 0引用数: 0
h-index: 0
机构:
CSIR Cent Electrochem Res Inst, Chennai Unit, Madras 600113, Tamil Nadu, IndiaCSIR Cent Electrochem Res Inst, Chennai Unit, Madras 600113, Tamil Nadu, India
Prakash, A. S.
Ramesha, K.
论文数: 0引用数: 0
h-index: 0
机构:
CSIR Cent Electrochem Res Inst, Chennai Unit, Madras 600113, Tamil Nadu, IndiaCSIR Cent Electrochem Res Inst, Chennai Unit, Madras 600113, Tamil Nadu, India
Ramesha, K.
Tarascon, J-M.
论文数: 0引用数: 0
h-index: 0
机构:
Univ Picardie Jules Verne, Lab React & Chim Solides, CNRS UMR 6007, F-80039 Amiens, FranceCSIR Cent Electrochem Res Inst, Chennai Unit, Madras 600113, Tamil Nadu, India