| 학회 |
한국재료학회 |
| 학술대회 |
2021년 봄 (05/12 ~ 05/14, 광주 김대중컨벤션센터) |
| 권호 |
27권 1호 |
| 발표분야 |
C. 에너지 재료 분과 |
| 제목 |
Polymorph Lead Vanadate Synthesis and its Application for Wearable Aqueous Supercapacitor |
| 초록 |
Supercapacitors are of keen interest for the modern electronics industry because of their high- power density, cyclic stability and supercapacitors are important regarding safety aspects. Thus, for the development of industries including IoT (internet of things) demands for highly stable, with high power and energy density supercapacitor. Carbon based materials are very popular for supercapacitor applications, but they suffer from poor conductivity and low specific capacitance. Hence to solve this issue, finding alternative supercapacitor materials are on demand. Herein the growth of Lead vanadate (PbVOx) on nickel foam is reported with the excellent electrochemical properties. PbVOX was synthesized using hydrothermal route and morphology was controlled by controlling the synthesis time and capping agent. The chemical composition and structural analysis were performed by using different physical characterization techniques including scanning electron microscope (SEM), X-ray diffraction (XRD) and XPS. The obtained materials showed better electrochemical performance in the 1 M KOH electrolyte and were also tested in acid and neutral electrolyte for comparison study. The supercapacitor performance evaluation was performed by testing the fabricated supercapacitor by Cyclic Voltammetry (CV), Galvanostatic charging - discharging (GCD) and electrochemical impedance (EIS) analysis. The stability was tested by performing CV cycles test over 5000 cycles and it showed capacitance retention of 89.01% which is acceptable level for supercapacitor. Overall, our results indicated that the polymorph PbVOX based supercapacitor electrode showed excellent electrochemical performance with high specific capacitance and cyclic life which can be extended for practical applications. |
| 저자 |
홍상기1, 배예지2, Qadeer Akbar Sial1, 서형탁2
|
| 소속 |
1Department of Materials Science & Engineering, 2Ajou Univ. |
| 키워드 |
supercapacitor; Lead vanadate; aqueous electrolyte; polymorph; hydrothermal
|
| E-Mail |
|
