Particle size dependence of the electrochemical properties of SrMnO3 supercapacitor electrodes
- Authors
- Laohana, P.; Tanapongpisit, N.; Kim, Sangmo; Eknapakul, T.; Fongkaew, I.; Supruangnet, R.; Nakajima, H.; Meevasana, W.; Bark, Chung Wung; Saenrang, W.
- Issue Date
- Apr-2021
- Publisher
- SPRINGER
- Keywords
- Electrochemical properties; Perovskite oxide; Size dependence; SrMnO3; Supercapacitors
- Citation
- JOURNAL OF SOLID STATE ELECTROCHEMISTRY, v.25, no.4, pp.1121 - 1129
- Journal Title
- JOURNAL OF SOLID STATE ELECTROCHEMISTRY
- Volume
- 25
- Number
- 4
- Start Page
- 1121
- End Page
- 1129
- URI
- https://scholarworks.bwise.kr/gachon/handle/2020.sw.gachon/79868
- DOI
- 10.1007/s10008-020-04879-6
- ISSN
- 1432-8488
- Abstract
- 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. © 2021, Springer-Verlag GmbH Germany, part of Springer Nature.
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