• 文献标题:   Synthesis of reduced graphene oxide (rGO)/dysprosium selenide (Dy2Se3) composite electrode for energy storage; flexible asymmetric supercapacitor
  • 文献类型:   Article
  • 作  者:   KHOT SD, MALAVEKAR DB, BAGWADE PP, NIKAM RP, LOKHANDE CD
  • 作者关键词:   composite electrode, dysprosium selenide, flexible electrochemical supercapacitor, reduced graphene oxide, successive ionic layer adsorption reaction, thin film
  • 出版物名称:   JOURNAL OF PHYSICS CHEMISTRY OF SOLIDS
  • ISSN:   0022-3697 EI 1879-2553
  • 通讯作者地址:  
  • 被引频次:   0
  • DOI:   10.1016/j.jpcs.2023.111419 EA MAY 2023
  • 出版年:   2023

▎ 摘  要

In recent years, the requirement for flexible electrode materials has attracted scientific attention for developing flexible supercapacitors. The present work reports the porous reduced graphene oxide/dysprosium selenide (rGO/Dy2Se3) composite thin films preparation, employing successive ionic layer adsorption and reaction (SILAR) method. This work offers thorough information about the structure, morphology, and elemental analysis of prepared rGO/Dy2Se3 composite, as well as its electrochemical properties such as specific capacitance (Cs), charge transfer resistance, electrochemical stability, etc. The rGO/Dy2Se3 composite electrode achieved a Cs of 289 F g-1 at a 5 mV s-1 scan rate with 89% retention up to 5000 galvanostatic charge-discharge (GCD) cycles due to synergy between properties of Dy2Se3 and rGO. A flexible solid-state asymmetric supercapacitor (FSSAS) rGO-Dy2Se3/LiClO4-PVA/MnO2) device delivered Cs of 107 F g-1 at a 5 mV s-1 and a specific energy of 45 Wh kg-1 at a power of 9 kW kg-1. The FSSAS device retained 91% of its capacitance at a 160 & DEG; bending angle. These findings show that Dy2Se3 anchored on rGO using SILAR method is a promising candidate for supercapacitors.