Synthesis of Ru0.58In0.42Oy•nH2O nanoparticles dispersed onto poly(sodium-4-styrene sulfonate)-functionalized multi-walled carbon nanotubes and their application for electrochemical capacitors

JOURNAL OF COLLOID AND INTERFACE SCIENCE

卷:354

Article

Yuan, Changzhou^1,2  Hou, Linrui¹  Yang, Long¹  Li, Diankai¹  Tan, Jie¹  Shen, Laifa²  Zhang, Fang²  Zhang, Xiaogang² 

[1] Anhui Univ Technol, Sch Mat Sci & Engn, Anhui Key Lab Met Mat & Proc, Maanshan 243002, Peoples R China

[2] Nanjing Univ Aeronaut & Astronaut, Coll Mat Sci & Engn, Nanjing 210016, Peoples R China

关键词: Functionalized multi-walled carbon nanotubes;    Ru0.58In0.42Oy center dot nH(2)O nanoparticles;    Poly(sodium-4-styrene sulfonate);    Monodispersion;    Electrochemical capacitance;   

DOI  :  10.1016/j.jcis.2010.10.066

来源: Elsevier

【 摘 要 】

In this work, poly(sodium-4-styrene sulfonate) (PSS)-functionalized multi-walled carbon nanotubes (FMWCNTs) were first synthesized via a polymer-assisted technique. Then, Ru0.58In0.42Oy center dot nH(2)O nanoparticles (NPs) were mono-dispersed onto the FMWCNTs surfaces under mild hydrothermal condition. Here, PSS with negative charge serves as a bifunctional molecule both for solubilizing and dispersing MWCNTs into aqueous solution and for tethering Ru3+ and In3+ to facilitate the good dispersion of Ru1-xInxOy center dot nH(2)O NPs onto their surfaces. The good dispersion of Ru0.58In0.42Oy center dot nH(2)O NPs onto FMWCNTs makes OH- ions and electrons easily contact these NPs with abundant electroactive sites, which results in a large specific capacitance (SC) of 319 F g(-1) for the naocomposites. Moreover, a symmetric electrochemical capacitor (EC) is constructed by using the nanocomposites as electrodes and delivers large specific energy density of 18.1 Wh kg(-1), desirable power property of 1302 W kg(-1), high electrochemical reversibility and good SC retention of 84.7%. (C) 2010 Elsevier Inc. All rights reserved.

【 授权许可】

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