Influence of molar concentration on the morphology and electrochemical performance of binder-free Mn3O4 thin films in aqueous symmetrical supercapacitors

IF 4.4 3区化学 Q1 CHEMISTRY, INORGANIC & NUCLEAR

Inorganic Chemistry Communications Pub Date : 2025-02-25 DOI:10.1016/j.inoche.2025.114207

P.S. Naik , R.S. Redekar , J.V. Kamble , S.V. Sadavar , N.L. Tarwal , S.-Y. Lee , S.J. Park , M.M. Karanjkar , P.D. Kamble

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Abstract

The current study reports a cost-effective hydrothermal method for binder-less synthesis of manganese oxide (Mn₃O₄) nanostructures on flexible stainless steel (SS) substrates, expected to enhance electrochemical performance for supercapacitor (SC) applications. By optimizing Mn molar concentrations, the Mn₃O₄ film (MO) with a 3 M concentration formed a porous structure with cauliflower-like morphology, beneficial for energy storage in aqueous electrolytes. Physicochemical characterization is used for the analysis of the MO samples. The electrode MO-0.3 exhibited a specific capacity of 1211C g⁻¹ at 0.99 A g⁻¹. An aqueous symmetric device (MO-0.3//KOH//MO-0.3 ASD) demonstrated a specific capacitance of 120.23F g⁻¹, a specific energy of 16.77 Wh kg⁻¹, and a specific power of 247.52 W kg⁻¹, with ∽89 % capacitance retention after 5000 cycles. These findings underscore the potential of MO electrodes for high-performance electrochemical energy storage, showcasing the efficacy of this material in supercapacitor applications.

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来源期刊

Inorganic Chemistry Communications 化学-无机化学与核化学

CiteScore

5.50

自引率

7.90%

发文量

1013

审稿时长

53 days

期刊介绍： Launched in January 1998, Inorganic Chemistry Communications is an international journal dedicated to the rapid publication of short communications in the major areas of inorganic, organometallic and supramolecular chemistry. Topics include synthetic and reaction chemistry, kinetics and mechanisms of reactions, bioinorganic chemistry, photochemistry and the use of metal and organometallic compounds in stoichiometric and catalytic synthesis or organic compounds.