Pt nanoflower-poly(aniline) electrode material with the synchronized concept of energy storage in supercapacitor
- Title
- Pt nanoflower-poly(aniline) electrode material with the synchronized concept of energy storage in supercapacitor
- Creator
- Sumana V.S.; Sudhakar Y.N.; Varghese A.; Nagaraja G.K.
- Description
- Electrochemically deposited porous film of poly(aniline) (PANI) on stainless steel (SS) current collector is employed as the support for electrodeposition of platinum (Pt). PANI facilitates the formation of Pt nanoflowers with an enhanced electrochemically active surface area compared with sub-micron size Pt particles deposited on the bare SS electrode. Hence, a new concept Pt nanoflower-PANI electrode materials with synchronization between redox mode in PANI and double-layer mode of charge storage in Pt nanoflower is discussed. Remarkably, Pt is distributed like a nano-flower on the surface of PANI and prevents PANI from stripping during the charge-discharge process, thereby minimizing the issue of stripping in conducting polymer-based electrodes. Owing to the highly porous surface morphology of Pt nanoflowers as observed in SEM, the Pt-PANI/SS electrode shows excellent electrochemical performance than PANI/SS electrode towards supercapacitor application. The electrode materials are characterized using X-ray and X-ray photon spectroscopy (XPS), which shows dual amorphous and crystalline properties. Dielectric studies of Pt-PANI/SS electrodes were carried out to understand electrode/electrolyte interface behavior. In the fabricated supercapacitor, the cyclic voltammetry studies showed quasi-rectangular shape characteristics at slower scan rates with a specific capacitance of 926 Fg?1. Charge-discharge studies showed good cyclic stability and coulombic efficiency. 2022 Elsevier B.V.
- Source
- Applied Surface Science, Vol-589
- Date
- 2022-01-01
- Publisher
- Elsevier B.V.
- Subject
- Dielectric; Nanomaterial; Platinum; Poly(aniline); Supercapacitor; XPS
- Coverage
- Sumana V.S., Department of Chemistry, Srinivas Institute of Technology, Valachil, 574143, India, Department of Chemistry, Mangalore University, Mangalagangotri, Konaje, India; Sudhakar Y.N., Department of Chemistry, Manipal Institute of Technology, Manipal Academy of Higher Education, Karnataka, Manipal, 576104, India; Varghese A., Department of Chemistry, CHRIST (Deemed to be University), Bengaluru, 560029, India; Nagaraja G.K., Department of Chemistry, Mangalore University, Mangalagangotri, Konaje, India
- Rights
- Restricted Access
- Relation
- ISSN: 1694332; CODEN: ASUSE
- Format
- Online
- Language
- English
- Type
- Article
Collection
Citation
Sumana V.S.; Sudhakar Y.N.; Varghese A.; Nagaraja G.K., “Pt nanoflower-poly(aniline) electrode material with the synchronized concept of energy storage in supercapacitor,” CHRIST (Deemed To Be University) Institutional Repository, accessed February 24, 2025, https://archives.christuniversity.in/items/show/15057.