Transition metal oxides are one of the promising materials for energy storage because they have rich redox reactions with good stability. In this study, CuMnO2 nanocrystals and CuMnO2/graphene quantum dot (GQD) composite were synthesized by hydrothermal method and used in constructing a new supercapacitor. GQD has been applied to increase specific capacity and improve efficiency of the supercapacitor. Various methods were used to identify the synthesized nanocomposite and to study its morphology, structure and surface area. Cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS) were used to record and track the electrochemical behavior of the synthesized nanocomposite used as an electrode material. The study of changes in the capacity of CuMnO2/GQD and CuMnO2 electrodes during 5000 consecutive charge/discharge cycles showed that the stability of the electrode made of nanocomposite is higher and its capacity after this number of cycles reached 83.3%, while the capacity of the electrode made with CuMnO2 nanoparticles has reached 65.4%. The specific capacity of CuMnO2/GQD nanocomposite and CuMnO2 nanoparticles at a current density of 1 A g(-1) was calculated to be 520.2 and 381.5 C g(-1), respectively. The maximum specific energy of CuMnO2/GQD//AC asymmetric supercapacitor was obtained at a specific power of 1108.1 W kg(-1) equal to 47.9 Wh Kg(-1). Asymmetric supercapacitor capacitance decreased by only less than 13.3% after 5000 charge and discharge cycles, which is a very good cycle life compared to similar materials. All these results indicate that the CuMnO2/GQD nanocomposite can be deliberated as a possible option for fast and stable supercapacitor.
机构:
Cairo Univ, Fac Sci, Chem Dept, Giza 12613, EgyptCairo Univ, Fac Sci, Chem Dept, Giza 12613, Egypt
Abu Elella, Mahmoud H.
Goda, Emad S.
论文数: 0引用数: 0
h-index: 0
机构:
Hannam Univ, Dept Chem, Organ Nanomat Lab, Daejeon 34054, South Korea
Natl Inst Stand, Fire Protect Lab, Giza 12211, EgyptCairo Univ, Fac Sci, Chem Dept, Giza 12613, Egypt
Goda, Emad S.
Abdallah, Heba M.
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机构:
Natl Res Ctr, Dept Polymers & Pigments, Giza 12622, EgyptCairo Univ, Fac Sci, Chem Dept, Giza 12613, Egypt
Abdallah, Heba M.
Esmail Shalan, Ahmed
论文数: 0引用数: 0
h-index: 0
机构:
Cent Met Res & Dev Inst CMRDI, POB 87, Cairo 11421, Egypt
Martina Casiano UPV EHU Sci Pk, Basque Ctr Mat Applicat & Nanostruct, BCMat, Barrio Sarriena S-N, Leioa 48940, SpainCairo Univ, Fac Sci, Chem Dept, Giza 12613, Egypt
Esmail Shalan, Ahmed
Gamal, Heba
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h-index: 0
机构:
Alexandria Univ, Fac Specif Educ, Home Econ Dept, Alexandria, EgyptCairo Univ, Fac Sci, Chem Dept, Giza 12613, Egypt
Gamal, Heba
Yoon, Kuk Ro
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h-index: 0
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Hannam Univ, Dept Chem, Organ Nanomat Lab, Daejeon 34054, South KoreaCairo Univ, Fac Sci, Chem Dept, Giza 12613, Egypt
机构:
Cairo Univ, Fac Sci, Chem Dept, Giza 12613, EgyptCairo Univ, Fac Sci, Chem Dept, Giza 12613, Egypt
Abu Elella, Mahmoud H.
Abd ElHafeez, Eman
论文数: 0引用数: 0
h-index: 0
机构:
Cairo Univ, Fac Sci, Bot & Microbiol Dept, Giza 12613, EgyptCairo Univ, Fac Sci, Chem Dept, Giza 12613, Egypt
Abd ElHafeez, Eman
Goda, Emad S.
论文数: 0引用数: 0
h-index: 0
机构:
Hannam Univ, Dept Chem, Organ Nanomat Lab, Daejeon 34054, South Korea
Natl Inst Stand, Fire Protect Lab, Giza 12211, EgyptCairo Univ, Fac Sci, Chem Dept, Giza 12613, Egypt
Goda, Emad S.
Lee, Seungho
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h-index: 0
机构:
Hannam Univ, Dept Chem, Daejeon 34054, South KoreaCairo Univ, Fac Sci, Chem Dept, Giza 12613, Egypt
Lee, Seungho
Yoon, Kuk Ro
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h-index: 0
机构:
Hannam Univ, Dept Chem, Organ Nanomat Lab, Daejeon 34054, South KoreaCairo Univ, Fac Sci, Chem Dept, Giza 12613, Egypt
机构:
Tabbin Inst Met Studies TIMS, Min & Met Engn Dept, Helwan 109, Cairo 11421, EgyptTabbin Inst Met Studies TIMS, Min & Met Engn Dept, Helwan 109, Cairo 11421, Egypt
Attia, Sayed Y.
Barakat, Yosry F.
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h-index: 0
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Tabbin Inst Met Studies TIMS, Min & Met Engn Dept, Helwan 109, Cairo 11421, EgyptTabbin Inst Met Studies TIMS, Min & Met Engn Dept, Helwan 109, Cairo 11421, Egypt
Barakat, Yosry F.
Hassan, Hamdy H.
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h-index: 0
机构:
Ain Shams Univ, Dept Chem, Fac Sci, Cairo 11566, EgyptTabbin Inst Met Studies TIMS, Min & Met Engn Dept, Helwan 109, Cairo 11421, Egypt
Hassan, Hamdy H.
Mohamed, Saad G.
论文数: 0引用数: 0
h-index: 0
机构:
Tabbin Inst Met Studies TIMS, Min & Met Engn Dept, Helwan 109, Cairo 11421, EgyptTabbin Inst Met Studies TIMS, Min & Met Engn Dept, Helwan 109, Cairo 11421, Egypt
机构:
Xinyang Normal Univ, Sch Phys & Elect Engn, Xinyang 464000, Peoples R China
Xinyang Normal Univ, Key Lab Adv Micro Nano Funct Mat, Xinyang 464000, Peoples R ChinaXinyang Normal Univ, Sch Phys & Elect Engn, Xinyang 464000, Peoples R China
Cheng, Jinbing
Yan, Hailong
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Xinyang Normal Univ, Sch Phys & Elect Engn, Xinyang 464000, Peoples R China
Xinyang Normal Univ, Key Lab Adv Micro Nano Funct Mat, Xinyang 464000, Peoples R ChinaXinyang Normal Univ, Sch Phys & Elect Engn, Xinyang 464000, Peoples R China
Yan, Hailong
Lu, Yang
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机构:
Xinyang Normal Univ, Sch Phys & Elect Engn, Xinyang 464000, Peoples R China
Xinyang Normal Univ, Key Lab Adv Micro Nano Funct Mat, Xinyang 464000, Peoples R China
Hebei Univ Technol, Sch Mat Sci & Engn, Tianjin 300130, Peoples R ChinaXinyang Normal Univ, Sch Phys & Elect Engn, Xinyang 464000, Peoples R China
Lu, Yang
Qiu, Kangwen
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Xinyang Normal Univ, Sch Phys & Elect Engn, Xinyang 464000, Peoples R China
Xinyang Normal Univ, Key Lab Adv Micro Nano Funct Mat, Xinyang 464000, Peoples R ChinaXinyang Normal Univ, Sch Phys & Elect Engn, Xinyang 464000, Peoples R China
Qiu, Kangwen
Hou, Xiaoyi
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Xinyang Normal Univ, Sch Phys & Elect Engn, Xinyang 464000, Peoples R China
Xinyang Normal Univ, Key Lab Adv Micro Nano Funct Mat, Xinyang 464000, Peoples R ChinaXinyang Normal Univ, Sch Phys & Elect Engn, Xinyang 464000, Peoples R China
Hou, Xiaoyi
Xu, Jinyou
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Xinyang Normal Univ, Sch Phys & Elect Engn, Xinyang 464000, Peoples R China
Xinyang Normal Univ, Key Lab Adv Micro Nano Funct Mat, Xinyang 464000, Peoples R ChinaXinyang Normal Univ, Sch Phys & Elect Engn, Xinyang 464000, Peoples R China
Xu, Jinyou
Han, Lei
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h-index: 0
机构:
Xinyang Normal Univ, Sch Phys & Elect Engn, Xinyang 464000, Peoples R ChinaXinyang Normal Univ, Sch Phys & Elect Engn, Xinyang 464000, Peoples R China
Han, Lei
Liu, Xianming
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h-index: 0
机构:
Luoyang Normal Univ, Coll Chem & Chem Engn, Luoyang 471022, Peoples R ChinaXinyang Normal Univ, Sch Phys & Elect Engn, Xinyang 464000, Peoples R China
Liu, Xianming
Kim, Jang-Kyo
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h-index: 0
机构:
Hebei Univ Technol, Sch Mat Sci & Engn, Tianjin 300130, Peoples R China
Hong Kong Univ Sci & Technol, Dept Mech & Aerosp Engn, Kowloon, Hong Kong, Peoples R ChinaXinyang Normal Univ, Sch Phys & Elect Engn, Xinyang 464000, Peoples R China
Kim, Jang-Kyo
Luo, Yongsong
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Xinyang Normal Univ, Sch Phys & Elect Engn, Xinyang 464000, Peoples R China
Xinyang Normal Univ, Key Lab Adv Micro Nano Funct Mat, Xinyang 464000, Peoples R ChinaXinyang Normal Univ, Sch Phys & Elect Engn, Xinyang 464000, Peoples R China
机构:
Cairo Univ, Fac Sci, Chem Dept, Giza 12613, EgyptCairo Univ, Fac Sci, Chem Dept, Giza 12613, Egypt
Abu Elella, Mahmoud H.
Goda, Emad S.
论文数: 0引用数: 0
h-index: 0
机构:
Hannam Univ, Dept Chem, Organ Nanomat Lab, Daejeon 34054, South Korea
Natl Inst Stand, Fire Protect Lab, Giza 12211, EgyptCairo Univ, Fac Sci, Chem Dept, Giza 12613, Egypt
Goda, Emad S.
Abdallah, Heba M.
论文数: 0引用数: 0
h-index: 0
机构:
Natl Res Ctr, Dept Polymers & Pigments, Giza 12622, EgyptCairo Univ, Fac Sci, Chem Dept, Giza 12613, Egypt
Abdallah, Heba M.
Esmail Shalan, Ahmed
论文数: 0引用数: 0
h-index: 0
机构:
Cent Met Res & Dev Inst CMRDI, POB 87, Cairo 11421, Egypt
Martina Casiano UPV EHU Sci Pk, Basque Ctr Mat Applicat & Nanostruct, BCMat, Barrio Sarriena S-N, Leioa 48940, SpainCairo Univ, Fac Sci, Chem Dept, Giza 12613, Egypt
Esmail Shalan, Ahmed
Gamal, Heba
论文数: 0引用数: 0
h-index: 0
机构:
Alexandria Univ, Fac Specif Educ, Home Econ Dept, Alexandria, EgyptCairo Univ, Fac Sci, Chem Dept, Giza 12613, Egypt
Gamal, Heba
Yoon, Kuk Ro
论文数: 0引用数: 0
h-index: 0
机构:
Hannam Univ, Dept Chem, Organ Nanomat Lab, Daejeon 34054, South KoreaCairo Univ, Fac Sci, Chem Dept, Giza 12613, Egypt
机构:
Cairo Univ, Fac Sci, Chem Dept, Giza 12613, EgyptCairo Univ, Fac Sci, Chem Dept, Giza 12613, Egypt
Abu Elella, Mahmoud H.
Abd ElHafeez, Eman
论文数: 0引用数: 0
h-index: 0
机构:
Cairo Univ, Fac Sci, Bot & Microbiol Dept, Giza 12613, EgyptCairo Univ, Fac Sci, Chem Dept, Giza 12613, Egypt
Abd ElHafeez, Eman
Goda, Emad S.
论文数: 0引用数: 0
h-index: 0
机构:
Hannam Univ, Dept Chem, Organ Nanomat Lab, Daejeon 34054, South Korea
Natl Inst Stand, Fire Protect Lab, Giza 12211, EgyptCairo Univ, Fac Sci, Chem Dept, Giza 12613, Egypt
Goda, Emad S.
Lee, Seungho
论文数: 0引用数: 0
h-index: 0
机构:
Hannam Univ, Dept Chem, Daejeon 34054, South KoreaCairo Univ, Fac Sci, Chem Dept, Giza 12613, Egypt
Lee, Seungho
Yoon, Kuk Ro
论文数: 0引用数: 0
h-index: 0
机构:
Hannam Univ, Dept Chem, Organ Nanomat Lab, Daejeon 34054, South KoreaCairo Univ, Fac Sci, Chem Dept, Giza 12613, Egypt
机构:
Tabbin Inst Met Studies TIMS, Min & Met Engn Dept, Helwan 109, Cairo 11421, EgyptTabbin Inst Met Studies TIMS, Min & Met Engn Dept, Helwan 109, Cairo 11421, Egypt
Attia, Sayed Y.
Barakat, Yosry F.
论文数: 0引用数: 0
h-index: 0
机构:
Tabbin Inst Met Studies TIMS, Min & Met Engn Dept, Helwan 109, Cairo 11421, EgyptTabbin Inst Met Studies TIMS, Min & Met Engn Dept, Helwan 109, Cairo 11421, Egypt
Barakat, Yosry F.
Hassan, Hamdy H.
论文数: 0引用数: 0
h-index: 0
机构:
Ain Shams Univ, Dept Chem, Fac Sci, Cairo 11566, EgyptTabbin Inst Met Studies TIMS, Min & Met Engn Dept, Helwan 109, Cairo 11421, Egypt
Hassan, Hamdy H.
Mohamed, Saad G.
论文数: 0引用数: 0
h-index: 0
机构:
Tabbin Inst Met Studies TIMS, Min & Met Engn Dept, Helwan 109, Cairo 11421, EgyptTabbin Inst Met Studies TIMS, Min & Met Engn Dept, Helwan 109, Cairo 11421, Egypt
机构:
Xinyang Normal Univ, Sch Phys & Elect Engn, Xinyang 464000, Peoples R China
Xinyang Normal Univ, Key Lab Adv Micro Nano Funct Mat, Xinyang 464000, Peoples R ChinaXinyang Normal Univ, Sch Phys & Elect Engn, Xinyang 464000, Peoples R China
Cheng, Jinbing
Yan, Hailong
论文数: 0引用数: 0
h-index: 0
机构:
Xinyang Normal Univ, Sch Phys & Elect Engn, Xinyang 464000, Peoples R China
Xinyang Normal Univ, Key Lab Adv Micro Nano Funct Mat, Xinyang 464000, Peoples R ChinaXinyang Normal Univ, Sch Phys & Elect Engn, Xinyang 464000, Peoples R China
Yan, Hailong
Lu, Yang
论文数: 0引用数: 0
h-index: 0
机构:
Xinyang Normal Univ, Sch Phys & Elect Engn, Xinyang 464000, Peoples R China
Xinyang Normal Univ, Key Lab Adv Micro Nano Funct Mat, Xinyang 464000, Peoples R China
Hebei Univ Technol, Sch Mat Sci & Engn, Tianjin 300130, Peoples R ChinaXinyang Normal Univ, Sch Phys & Elect Engn, Xinyang 464000, Peoples R China
Lu, Yang
Qiu, Kangwen
论文数: 0引用数: 0
h-index: 0
机构:
Xinyang Normal Univ, Sch Phys & Elect Engn, Xinyang 464000, Peoples R China
Xinyang Normal Univ, Key Lab Adv Micro Nano Funct Mat, Xinyang 464000, Peoples R ChinaXinyang Normal Univ, Sch Phys & Elect Engn, Xinyang 464000, Peoples R China
Qiu, Kangwen
Hou, Xiaoyi
论文数: 0引用数: 0
h-index: 0
机构:
Xinyang Normal Univ, Sch Phys & Elect Engn, Xinyang 464000, Peoples R China
Xinyang Normal Univ, Key Lab Adv Micro Nano Funct Mat, Xinyang 464000, Peoples R ChinaXinyang Normal Univ, Sch Phys & Elect Engn, Xinyang 464000, Peoples R China
Hou, Xiaoyi
Xu, Jinyou
论文数: 0引用数: 0
h-index: 0
机构:
Xinyang Normal Univ, Sch Phys & Elect Engn, Xinyang 464000, Peoples R China
Xinyang Normal Univ, Key Lab Adv Micro Nano Funct Mat, Xinyang 464000, Peoples R ChinaXinyang Normal Univ, Sch Phys & Elect Engn, Xinyang 464000, Peoples R China
Xu, Jinyou
Han, Lei
论文数: 0引用数: 0
h-index: 0
机构:
Xinyang Normal Univ, Sch Phys & Elect Engn, Xinyang 464000, Peoples R ChinaXinyang Normal Univ, Sch Phys & Elect Engn, Xinyang 464000, Peoples R China
Han, Lei
Liu, Xianming
论文数: 0引用数: 0
h-index: 0
机构:
Luoyang Normal Univ, Coll Chem & Chem Engn, Luoyang 471022, Peoples R ChinaXinyang Normal Univ, Sch Phys & Elect Engn, Xinyang 464000, Peoples R China
Liu, Xianming
Kim, Jang-Kyo
论文数: 0引用数: 0
h-index: 0
机构:
Hebei Univ Technol, Sch Mat Sci & Engn, Tianjin 300130, Peoples R China
Hong Kong Univ Sci & Technol, Dept Mech & Aerosp Engn, Kowloon, Hong Kong, Peoples R ChinaXinyang Normal Univ, Sch Phys & Elect Engn, Xinyang 464000, Peoples R China
Kim, Jang-Kyo
Luo, Yongsong
论文数: 0引用数: 0
h-index: 0
机构:
Xinyang Normal Univ, Sch Phys & Elect Engn, Xinyang 464000, Peoples R China
Xinyang Normal Univ, Key Lab Adv Micro Nano Funct Mat, Xinyang 464000, Peoples R ChinaXinyang Normal Univ, Sch Phys & Elect Engn, Xinyang 464000, Peoples R China