Korean Institute of Surface Engineering

pISSN : 1225-8024 | eISSN : 3399-8403


한국표면공학회지 (52권3호 123-129)

Effect of Hydrogen in Rapid Thermal Annealing on the Graphene-Zinc Oxide Electrode for Supercapacitor

슈퍼커패시터용 그래핀-산화아연 전극의 급속열처리에서 수소의 영향

Jeong, Woo-Jun;Oh, Ye-Chan;Kim, Sang-Ho;

한국기술교육대학교 에너지신소재화학공학과;
School of Energy, Materials & Chemical Engineering Korea University of Technology and Education;

DOI : 10.5695/JKISE.2019.52.3.123


With recent demand for the renewable energy resources, we conducted a research on the energy conversion and storage device of supercapacitor. The hybrid graphene-zinc oxide(GZO) electrodes for the supercapacitors (SCs) were fabricated and investigated. To increase the electrical conductivity of the GZO electrode, the rapid thermal annealing(RTA) in $Ar/H_2$(10%) atmosphere was applied and the effect was examined by comparing it with RTA at Ar atmosphere. In Raman spectroscopy, the electrodes annealed at 400? in $Ar/H_2$ atmosphere showed a lower ratio of D/G peak than that of annealed at Ar atmosphere, and had a larger specific capacitance(Sc) in the cyclic voltammetry(CV), and a lower the equivalent series resistance(ESR) in the electrochemical impedance spectroscopy(EIS). The reason seems to come from the better mixing of the graphene and zinc oxide by the RTA in $Ar/H_2$(10%).


Graphene;Graphene oxide;Hydrogen;Supercapacitor;Rapid thermal annealing;