Hybrid nanocomposites of AuNP@C@NiO synthesized via in-situ reduction as promising electrode materials for high-performance supercapacitor

Porous activated carbon materials are extensively used as adsorbent electrode materials for energy storage devices because of their impressive superlative characteristics, such as large specific surface area, high electrical conductivity and low cost. In this work, Hierarchical porous carbon and nic...

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Bibliographic Details
Published in:Journal of materials science. Materials in electronics 2021-12, Vol.32 (24), p.28480-28493
Main Authors: Albashir, Abdalazeez Ismail Mohamed, Zhang, Qianqian, Hadi, Mohammed Kamal, Iradukunda, Yves, Ran, Fen
Format: Article
Language:English
Subjects:
Activated carbon
Characterization and Evaluation of Materials
Charge transfer
Chemistry and Materials Science
Current density
Electrical resistivity
Electrochemical analysis
Electrode materials
Electrodes
Energy storage
Flux density
Gold
Materials Science
Nanocomposites
Nanoparticles
Nickel oxides
Optical and Electronic Materials
Porous materials
Supercapacitors
Synthesis
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Summary:Porous activated carbon materials are extensively used as adsorbent electrode materials for energy storage devices because of their impressive superlative characteristics, such as large specific surface area, high electrical conductivity and low cost. In this work, Hierarchical porous carbon and nickel oxide nanocomposites modified by gold nanoparticles (AuNP@C@NiO- x ) were synthesized through in-situ reduction methods and used as high-performance electrode material supercapacitors. The obtained nanocomposites material consisted of NiO, AuNPs nanoparticles on the surface of activated carbon material, in which the activated carbon was used as a hollow structure to attachment of NiO and AuNPs nanoparticles. The electrochemical analysis demonstrated that the AuNP@C@NiO- x composite electrode significantly improved electrochemical performance compared to the activated carbon and pristine NiO. The result shows that the AuNP@PC@NiO- x composites have the highest specific capacitance of 485.7 F/g at the current density of 1.0 A/g and lower charge-transfer resistance than pure NiO. Furthermore, the assembled asymmetric device (AuNP@PC@NiO-0.15/AC) demonstrated a maximum energy density of 19.22 Wh/kg at a power density of 175.2 W/kg and a better specific capacity retain of 84.2% at a current density of 1.0 A/g after 5000 cycles.
ISSN:0957-4522
1573-482X
DOI:10.1007/s10854-021-07229-y