Synthesis of Polypyrrole-coated NiO/Ni(OH)2 Hybrid Flowers Composite by Pulse Electro-polymerization for supercapacitor with Improved Electrochemical Capacitance

This work describes a novel strategy to synthesize polypyrrole-coated NiO/α-Ni(OH)2 hybrid flower with an improved capacitance performance for supercapacitor. Polypyrrole nanoparticles with a size of 80-100 nm were prepared by a pulse electro-polymerization and uniformly embedded into the petal gap...

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Bibliographic Details
Published in:International journal of electrochemical science 2020-12, Vol.15 (12), p.12644-12653
Main Authors: Yan, Ji, Sy, Serubbabel, Wang, Heng, Zhang, Yong, Wang, Li-Zhen, Zhou, Li-Ming, Yu, Ai-Ping
Format: Article
Language:English
Subjects:
Hybrid flower
Polypyrrole
Pulse electro-polymerization
Supercapacitors
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Summary:This work describes a novel strategy to synthesize polypyrrole-coated NiO/α-Ni(OH)2 hybrid flower with an improved capacitance performance for supercapacitor. Polypyrrole nanoparticles with a size of 80-100 nm were prepared by a pulse electro-polymerization and uniformly embedded into the petal gap of the self-assembled NiO/α-Ni(OH)2 hybrid flower. Due to the enhancement of the electrical conductivity and the improvement of electrochemical pseudo-capacitance, the as-synthesized polypyrrole-coated NiO/α-Ni(OH)2 hybrid flower composite showed a high reversible specific capacity of 359 F g-1 at 5 A g-1 in 2 M KOH electrolyte in a potential range of 0 - 0.45 V. Benefiting from the unique electro-polymerization design, the obtained hybrid flower composite demonstrated excellent capacitive performance and cycling stability after 1000 cycles, demonstrating the promising application as a high-performance pseudocapacitive material for supercapacitors.
ISSN:1452-3981
1452-3981
DOI:10.20964/2020.12.68