Template-Free Direct Deposition of Graphene Electrode on a Sticker Paper Substrate for Fabricating Paper-Based Micro-Supercapacitors
발표자
()
초록
내용
Graphene-based paper micro-supercapacitors (MSCs) were successfully prepared by a simple one-step exfoliation method on a sticker paper substrate, which has the added benefit of being inexpensive, eco-friendly, and readily applicable to any substrate without any material waste. Raman spectroscopy was used to identify the layer estimation and the presence of defects in the EG film and compared it with the CGP. The electrochemical performance and stability of the prepared MSC device were determined using cyclic voltammetry (CV) at various scan rates. The capacitance value of EG by CV at 100 mVs-1 is 1430 Fcm-2, which maintains 325 Fcm-2 at high scan rate of 10 mAs-1. Moreover, rolling (98.92%), folding (99.18 %), and after fold test (9.63 %) were also carried out to validate the device robustness toward capacitive performance. Our work is a promising successor for the next-generation low-cost on-chip energy storage system.