All-solid-state supercapacitor based on graphene oxide composite electrodes
Journal
ECS Transactions
Journal Volume
80
Journal Issue
10
Pages
453-462
ISBN
9781607685395
Date Issued
2017
Author(s)
Lo H.J.
Abstract
Supercapacitors are a promising energy storage device for portable products, electric vehicles, and smart grid applications. However, the major scientific challenge in this system is to significantly increase energy density. This study expands energy density by constructing an all-solid-state supercapacitor with graphene oxide (GO) based composite electrodes and gel polymer electrolyte (GPE). Composite electrodes integrating nickel hydroxide (Ni(OH)2) and reduced graphene oxide (RGO) fabricated through a hydrothermal process are validated via x-ray diffraction (XRD), scanning electron microscopy (SEM), and FTIR. Electrochemical performance of the composite electrode and all-solid-state supercapacitors are further examined by electrochemical procedures. The high resistance of metal oxide is shown to be overcome, and performance of the composite electrode approaches currently available published data. An all-solid-state supercapacitor with expanded operation window up to 3 V is demonstrated. © The Electrochemical Society.
Subjects
All-solid-state supercapacitor; Gel polymer electrolyte; Hydrothermal process; Nickel hydroxide; Reduced graphene oxide
SDGs
Other Subjects
Digital storage; Electric power transmission networks; Electrochemical electrodes; Electrolytic capacitors; Metals; Nickel compounds; Nickel metallography; Polyelectrolytes; Reduced Graphene Oxide; Scanning electron microscopy; Smart power grids; Supercapacitor; All-solid-state supercapacitors; Composite electrode; Electrochemical performance; Gel polymer electrolytes; Hydrothermal process; Nickel hydroxides; Reduced graphene oxides (RGO); Smart grid applications; Graphene
Type
conference paper