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Preparation and characterization of flower-like microspheres of nano-NiO as electrode material for supercapacitor

Du, Dingmin ; Hu, Zhonghua ; Liu, Yafei ; Deng, Yanghua ; Liu, Jimin

Journal of alloys and compounds, 2014-03, Vol.589, p.82-87 [Periódico revisado por pares]

Kidlington: Elsevier B.V

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Título:
Preparation and characterization of flower-like microspheres of nano-NiO as electrode material for supercapacitor
Autor: Du, Dingmin ; Hu, Zhonghua ; Liu, Yafei ; Deng, Yanghua ; Liu, Jimin
Assuntos: Alloys ; Applied sciences ; Capacitance ; Chemical synthesis methods ; Cross-disciplinary physics: materials science; rheology ; Current density ; Density ; Electrode material ; Electrode materials ; Electronics ; Exact sciences and technology ; Flower-like morphology ; Materials ; Materials science ; Methods of nanofabrication ; Microspheres ; Morphology ; Nanostructure ; Nickel oxide ; Physics ; Specific capacitance ; Voltammetry
É parte de: Journal of alloys and compounds, 2014-03, Vol.589, p.82-87
Notas: ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
Descrição: •NiO electrode material was prepared by a facile and environment-friendly hydrothermal method.•The prepared NiO is a nanosize material with a special morphology of flower-like microspheres.•NiO shows superior electrochemical behavior.•The flower-like microsphere nano-NiO materials are promising candidate as electrode material. NiO electrode material was prepared by a facile and environment-friendly hydrothermal method combined with subsequent calcination. The prepared samples were characterized by SEM, XRD and nitrogen adsorption. The electrochemical performances were investigated by cyclic voltammetry (CV), galvanostatic charge–discharge and cycle life. The condition of synthesis on the electrochemical performance of NiO was studied. The results show that the prepared NiO is a nanosize material with a special morphology of flower-like microspheres. It has a high specific capacitance of 762Fg−1 at 1Ag−1 and 598Fg−1 at high discharge current density of 10Ag−1. Furthermore, it exhibits an outstanding cycling performance and stability reflected by a high capacitive retention of 96% after the subsequent 1000 cycles at a high current density of 15Ag−1.
Editor: Kidlington: Elsevier B.V
Idioma: Inglês

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Preparation and characterization of flower-like microspheres of nano-NiO as electrode material for supercapacitor

Du, Dingmin ; Hu, Zhonghua ; Liu, Yafei ; Deng, Yanghua ; Liu, Jimin

Kidlington: Elsevier B.V

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