Construction of MnCo2O4/rGO hybrid nanostructures as promising electrode material for high-performance pseudocapacitors

0543204 - ÚFCH JH 2022 RIV NL eng J - Journal Article
Askari, M. B. - Salarizadeh, P. - Beheshti-Marnani, A. - Azizi, S. - Zadeh, M. H. R. - Rohani, T. - Beydaghi, H. - Saeidfirozeh, Homa
Construction of MnCo2O4/rGO hybrid nanostructures as promising electrode material for high-performance pseudocapacitors.
Journal of Materials Science-Materials in Electronics. Roč. 32, JUN 2021 (2021), s. 14863-14873. ISSN 0957-4522. E-ISSN 1573-482X
R&D Projects: GA MŠMT EF16_019/0000778
Institutional support: RVO:61388955
Keywords : hydrogen evolution reaction * reduced graphene oxide * metal-oxides * supercapacitor * co * electrocatalyst * capacity * carbons * sulfide
OECD category: Physical chemistry
Impact factor: 2.779, year: 2021
Method of publishing: Limited access

Spinel oxide nanoparticles are considered one of the best candidates for manufacturing pseudocapacitor electrodes. In this regard, MnCo2O4 is synthesized and subsequently hybridized with reduced graphene oxide (rGO). The structure and morphology of the as-prepared materials are confirmed by X-ray diffraction spectroscopy, Raman spectroscopy, and microscopy techniques. The electrochemical analysis is performed by cyclic voltammetry, electrochemical impedance spectroscopy, and galvanostatic charge-discharge techniques. The results show that the addition of rGO to the MnCo2O4 has a good effect on specific capacitance, stability, and increasing the discharge time of the prepared electrode. MnCo2O4/rGO hybrid indicates a specific capacity of 702 F/g and significant stability of 94% during 5000 cycles. Thus, this material can be considered a very promising candidate for usage in the superconducting electrodes.
Permanent Link: http://hdl.handle.net/11104/0320473