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Chemical vapor deposited graphene-based quasi-solid-state ultrathin and flexible sodium-ion supercapacitor
- Source :
- Journal of Electrochemical Science and Engineering (2022)
- Publication Year :
- 2022
- Publisher :
- International Association of Physical Chemists (IAPC), 2022.
-
Abstract
- Flexible electronic devices find wide application in wearable electronics and foldable gadgets. This article reports chemical vapor deposited (CVD) few-layers graphene for a solid-state flexible supercapacitor device. Raman spectroscopy analysis reveals up to five layers in the graphene samples. Polyvinyl alcohol-Na2SO4 hydrogel membrane is used as a gel polymer electrolyte (GPE). 50 nm thick silver (Ag) deposited on polyethylene tere­phthalate (PET) through E-beam deposition served as the flexible current collector for the device. Galvanostatic charge-discharge (GCD) executed on the fabricated device to ana­lyze its electrochemical performance yielded a specific areal capacitance of 15.3 mF cm-2 at 0.05 mA cm-2 current density. The obtained power density of the fabricated device is 0.53 µWh cm-2 at a power density of 25 µW cm-2.
Details
- Language :
- English
- ISSN :
- 18479286
- Database :
- Directory of Open Access Journals
- Journal :
- Journal of Electrochemical Science and Engineering
- Publication Type :
- Academic Journal
- Accession number :
- edsdoj.625f852534094842a250e35f10eeb574
- Document Type :
- article
- Full Text :
- https://doi.org/10.5599/jese.1411