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作者:

Raja, A. (Raja, A..) | Selvakumar, K. (Selvakumar, K..) | Swaminathan, M. (Swaminathan, M..) | Kang, Misook (Kang, Misook.)

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EI Scopus SCIE

摘要:

The specific capacitance of redox additive based electrolytes in supercapacitors is becoming increasingly important. The reduced Graphene Oxide (rGO)-Dy2WO6-ZnO, obtained by a simple hydrothermal route was analyzed by high resolution-transmission electron microscope (TEM), X-ray diffraction (XRD), X-ray photo-emission spectroscopy (XPS), scanning electron microscope (SEM), BET analysis, and cyclic voltagram (CV), to understand its structural morphology, chemical constitution and electrochemical efficiency of the nanocomposite. SEM images depict porous nanosheet like the structure of rGO-Dy2WO6-ZnO having a wave-type pattern. This research examines the capacitive performance of rGO-Dy2WO6-ZnO using redox additive electrolyte 0.2 M of K-4[Fe(CN)(6)] in 3 M of KOH. The composite electrode with redox additive based electrolyte gives synergistic effects and enhances the capacitance performance up to 752 Fg(-1) at the current density of 1 Ag-1. The energy storage of rGO-Dy2WO6-ZnO electrode material in 0.2 M of K-4[Fe(CN)(6)] in 3 M of KOH is greater than that in the bare aqueous electrolyte of 3 M of KOH. Moreover, the rGO-Dy2WO6-ZnO nanosheet electrode material exhibits excellent cycling stability of 89.6% up to 2000 cycles.

关键词:

Supercapacitors Reduced graphene oxide Redox electrolyte Ternary nanocomposite RGO-Dy2WO6-ZnO

作者机构:

  • [ 1 ] [Raja, A.]Yeungnam Univ, Coll Nat Sci, Dept Chem, Gyongsan 38541, Gyeongbuk, South Korea
  • [ 2 ] [Kang, Misook]Yeungnam Univ, Coll Nat Sci, Dept Chem, Gyongsan 38541, Gyeongbuk, South Korea
  • [ 3 ] [Selvakumar, K.]Beijing Univ Technol, Inst Microstruct & Property Adv Mat, Beijing, Peoples R China
  • [ 4 ] [Swaminathan, M.]Kalasalingam Acad Res & Educ, Int Res Ctr, Dept Chem, Srivilliputhur 626126, Tamil Nadu, India

通讯作者信息:

  • [Raja, A.]Yeungnam Univ, Coll Nat Sci, Dept Chem, Gyongsan 38541, Gyeongbuk, South Korea;;[Kang, Misook]Yeungnam Univ, Coll Nat Sci, Dept Chem, Gyongsan 38541, Gyeongbuk, South Korea

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来源 :

SYNTHETIC METALS

ISSN: 0379-6779

年份: 2021

卷: 276

4 . 4 0 0

JCR@2022

ESI学科: PHYSICS;

ESI高被引阀值:72

JCR分区:2

被引次数:

WoS核心集被引频次: 20

SCOPUS被引频次: 19

ESI高被引论文在榜: 0 展开所有

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