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Facile Route for Fabrication of Ferrimagnetic Mn 3 O 4 Spinel Material for Supercapacitors with Enhanced Capacitance

Author

Listed:
  • Wenjuan Yang

    (Department of Materials Science and Engineering, McMaster University, Hamilton, ON L8S4L7, Canada)

  • Mohamed Nawwar

    (Department of Materials Science and Engineering, McMaster University, Hamilton, ON L8S4L7, Canada)

  • Igor Zhitomirsky

    (Department of Materials Science and Engineering, McMaster University, Hamilton, ON L8S4L7, Canada)

Abstract

The purpose of this investigation was the development of a new colloidal route for the fabrication of Mn 3 O 4 electrodes for supercapacitors with enhanced charge storage performance. Mn 3 O 4 -carbon nanotube electrodes were fabricated with record-high capacitances of 6.67 F cm −2 obtained from cyclic voltammetry tests at a scan rate of 2 mV s −1 and 7.55 F cm −2 obtained from the galvanostatic charge–discharge tests at a current density of 3 mA cm −2 in 0.5 M Na 2 SO 4 electrolyte in a potential window of 0.9 V. The approach involves the use of murexide as a capping agent for the synthesis of Mn 3 O 4 and a co-dispersant for Mn 3 O 4 and carbon nanotubes. Good electrochemical performance of the electrode material was achieved at a high active mass loading of 40 mg cm −2 and was linked to a reduced agglomeration of Mn 3 O 4 nanoparticles and efficient co-dispersion of Mn 3 O 4 with carbon nanotubes. The mechanisms of murexide adsorption on Mn 3 O 4 and carbon nanotube are discussed. With the proposed method, the time-consuming electrode activation procedure for Mn 3 O 4 electrodes can be avoided. The approach developed in this investigation paves the way for the fabrication of advanced cathodes for asymmetric supercapacitors and multifunctional devices, combining capacitive, magnetic, and other functional properties.

Suggested Citation

  • Wenjuan Yang & Mohamed Nawwar & Igor Zhitomirsky, 2022. "Facile Route for Fabrication of Ferrimagnetic Mn 3 O 4 Spinel Material for Supercapacitors with Enhanced Capacitance," Energies, MDPI, vol. 15(5), pages 1-12, March.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:5:p:1812-:d:761582
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    References listed on IDEAS

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    1. Philip M. Stanley & Julien Warnan, 2021. "Molecular Dye-Sensitized Photocatalysis with Metal-Organic Framework and Metal Oxide Colloids for Fuel Production," Energies, MDPI, vol. 14(14), pages 1-13, July.
    2. Hwajoo Joo & Jaehan Lee & Jeyong Yoon, 2020. "Short Review: Timeline of the Electrochemical Lithium Recovery System Using the Spinel LiMn 2 O 4 as a Positive Electrode," Energies, MDPI, vol. 13(23), pages 1-14, November.
    3. Chengyang Zhang & Renkun Zhang & Hui Liu & Qinhong Wei & Dandan Gong & Liuye Mo & Hengcong Tao & Sha Cui & Luhui Wang, 2020. "One-Step Synthesis of Highly Dispersed and Stable Ni Nanoparticles Confined by CeO 2 on SiO 2 for Dry Reforming of Methane," Energies, MDPI, vol. 13(22), pages 1-12, November.
    4. Ngoc Hung Vu & Van-Duong Dao & Ha Tran Huu & Won Bin Im, 2020. "Effect of Synthesis Temperature on Structure and Electrochemical Performance of Spinel-Layered Li 1.33 MnTiO 4 +z in Li-Ion Batteries," Energies, MDPI, vol. 13(11), pages 1-11, June.
    5. Seok Hee Lee & Sung Pil Woo & Nitul Kakati & Dong-Joo Kim & Young Soo Yoon, 2018. "A Comprehensive Review of Nanomaterials Developed Using Electrophoresis Process for High-Efficiency Energy Conversion and Storage Systems," Energies, MDPI, vol. 11(11), pages 1-81, November.
    6. Ashraf Abdel-Ghany & Ahmed M. Hashem & Alain Mauger & Christian M. Julien, 2020. "Lithium-Rich Cobalt-Free Manganese-Based Layered Cathode Materials for Li-Ion Batteries: Suppressing the Voltage Fading," Energies, MDPI, vol. 13(13), pages 1-22, July.
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