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Fabrication of Bimetallic Oxides (MCo 2 O 4 : M=Cu, Mn) on Ordered Microchannel Electro-Conductive Plate for High-Performance Hybrid Supercapacitors

Author

Listed:
  • Mai Li

    (College of Science, Donghua University, Shanghai 201620, China)

  • Zheyi Meng

    (State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Material Science, Donghua University, Shanghai 201620, China)

  • Ruichao Feng

    (College of Mathematics and Physics, Shanghai University of Electric Power, Shanghai 200090, China)

  • Kailan Zhu

    (College of Science, Donghua University, Shanghai 201620, China)

  • Fengfeng Zhao

    (College of Mathematics and Physics, Shanghai University of Electric Power, Shanghai 200090, China)

  • Chunrui Wang

    (College of Science, Donghua University, Shanghai 201620, China)

  • Jiale Wang

    (College of Science, Donghua University, Shanghai 201620, China)

  • Lianwei Wang

    (Key Laboratory of Polar Materials and Devices (MOE), Department of Electronics, East China Normal University, Shanghai 200241, China)

  • Paul K. Chu

    (Department of Physics, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, China
    Department of Materials Science and Engineering, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, China
    Department of Biomedical Engineering, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, China)

Abstract

AB 2 O 4 -type binary-transition metal oxides (BTMOs) of CuCo 2 O 4 and MnCo 2 O 4 were successfully prepared on ordered macroporous electrode plates (OMEP) for supercapacitors. Under the current density of 5 mA cm −2 , the CuCo 2 O 4 /OMEP electrode achieved a specific capacitance of 1199 F g −1 . The asymmetric supercapacitor device prepared using CuCo 2 O 4 /OMEP as the positive electrode and carbon-based materials as the negative electrode (CuCo 2 O 4 /OMEP//AC) achieved the power density of 14.58 kW kg −1 under the energy density of 11.7 Wh kg −1 . After 10,000 GCD cycles, the loss capacitance of CuCo 2 O 4 /OMEP//AC is only 7.5% (the retention is 92.5%). The MnCo 2 O 4 /OMEP electrode shows the specific and area capacitance of 843 F g −1 and 5.39 F cm −2 at 5 mA cm −2 . The MnCo 2 O 4 /OMEP-based supercapacitor device (MnCo 2 O 4 /OMEP//AC) has a power density of 8.33 kW kg −1 under the energy density of 11.6 Wh kg −1 and the cycle stability was 90.2% after 10,000 cycles. The excellent power density and cycle stability prove that the prepared hybrid supercapacitor fabricated under silicon process has a good prospect as the power buffer device for solar cells.

Suggested Citation

  • Mai Li & Zheyi Meng & Ruichao Feng & Kailan Zhu & Fengfeng Zhao & Chunrui Wang & Jiale Wang & Lianwei Wang & Paul K. Chu, 2021. "Fabrication of Bimetallic Oxides (MCo 2 O 4 : M=Cu, Mn) on Ordered Microchannel Electro-Conductive Plate for High-Performance Hybrid Supercapacitors," Sustainability, MDPI, vol. 13(17), pages 1-14, September.
    • Handle: RePEc:gam:jsusta:v:13:y:2021:i:17:p:9896-:d:628144
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