Particle size dependence of the electrochemical properties of SrMnO3 supercapacitor electrodes
| Autor: | Nantawat Tanapongpisit, Chung Wung Bark, Ittipon Fongkaew, Sangmo Kim, Hideki Nakajima, Worawat Meevasana, Ratchadaporn Supruangnet, Wittawat Saenrang, Peerawat Laohana, T. Eknapakul |
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| Rok vydání: | 2021 |
| Předmět: |
Supercapacitor
Materials science Oxide 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics Electrochemistry 01 natural sciences Capacitance 0104 chemical sciences chemistry.chemical_compound chemistry Chemical engineering Electrode Particle General Materials Science Particle size Electrical and Electronic Engineering 0210 nano-technology Perovskite (structure) |
| Zdroj: | Journal of Solid State Electrochemistry. 25:1121-1129 |
| ISSN: | 1433-0768 1432-8488 |
| DOI: | 10.1007/s10008-020-04879-6 |
| Popis: | In this letter, we report on the simple process of preparing perovskite oxide SrMnO3 and the studying of the size effect on electrochemical properties for high-performance supercapacitor electrode. The high-crystalline micro-sized and nano-sized perovskite oxide SrMnO3 particles were successfully synthesized by a simple solid-state reaction, followed by a simple size reduction using high-energy ball milling. The electrochemical properties of the SrMnO3 had intriguing results on both sizes of particle, especially when comparing between before and after cycles. After a size reduction, the specific capacitance of the particles increased approximately twofold. Interestingly, the micro-sized SrMnO3 gained ∼500% its initial specific capacitance after 3000 successive cycles due to electrochemical nano-feature activation and oxygen-vacancy production, while the specific capacitance for the nano-sized SrMnO3 remained almost unchanged. Our work suggested a cost-effective and simple technique for high-performance perovskite-based supercapacitor electrodes by achieving the desired performance. |
| Databáze: | OpenAIRE |
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