Research Article

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2009, 2: 722-732

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https://doi.org/10.1007/s12274-009-9079-7

Template-Free Synthesis of Ordered Mesoporous NiO/Poly (Sodium-4-Styrene Sulfonate) Functionalized Carbon Nanotubes Composite for Electrochemical Capacitors

Changzhou Yuan, Shenglin Xiong, Xiaogang Zhang (), Laifa Shen, Fang Zhang, Bao Gao, and Linhao Su

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College of Material Science & Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China

Keywords: Template-free, ordered mesopores, NiO/carbon nanotubes composite, hierarchical porosity, electrochemical supercapacitors
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  • Abstract
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We report the first example of a practical and efficient template-free strategy for synthesizing ordered mesoporous NiO/poly(sodium-4-styrene sulfonate) (PSS) functionalized carbon nanotubes (FCNTs) composites by calcining a Ni(OH)2/FCNTs precursor prepared by refl uxing an alkaline solution of Ni(NH3)x 2+ and FCNTs at 97 oC for 1 h. The morphology and structure were characterized by X-ray diffraction, scanning electron microscopy, and transmission electron microscopy. Thermal decomposition of the precursor results in the formation of ordered mesoporous NiO/FCNTs composite (ca. 48 wt% NiO) with large specifi c surface area. Due to its enhanced electronic conductivity and hierarchical (meso- and macro-) porosity, composite simultaneously meets the three requirements for energy storage in electrochemical capacitors at high rate, namely, good electron conductivity, highly accessibleelectrochemical surface areas owing to the existence of mesopores, and efficient mass transport from the macropores. Electrochemical data demonstrated that the ordered mesoporous NiO/FCNTs composite is capable of delivering a specifi c capacitance (SC) of 526 F/g at 1 A/g and a SC of 439 F/g even at 6 A/g, and show a degradation of only ca. 6% in SC after 2000 continuous charge/discharge cycles.
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Template-Free Synthesis of Ordered Mesoporous NiO/Poly (Sodium-4-Styrene Sulfonate) Functionalized Carbon Nanotubes Composite for Electrochemical Capacitors. Nano Res. 2009, 2: 722-732 https://doi.org/10.1007/s12274-009-9079-7

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