聚吡咯/海藻酸钠纳米球的制备及其应用于高性能超级电容器

doi:10.3866/PKU.WHXB201309051

Abstract

Abstract:

Polypyrrole/sodium alginate (PPy/SA) nanospheres are successfully synthesized by oxidative polymerization of pyrrole using sodium alginate as structural templating agent. The morphology and structure of the PPy/SAnanospheres were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), and Fourier transform infrared (FTIR) spectroscopy. Their electrochemical properties are investigated by cyclic voltammetry (CV) and galvanostatic charge-discharge tests. The PPy/SAnanospheres exhibit a high specific capacitance of 347 F·g^-1 at a charge-discharge current density of 1 A·g^-1 in 1 mol·L^-1 KCl electrolyte. Unlike pure PPy, there was little attenuation in the capacitance of the PPy/SAnanospheres over 500 continuous charging-discharging cycles demonstrating good electrochemical stability. This result indicates that PPy/SAnanospheres are a promising candidate for high-performance supercapacitors.

Key words: Polypyrrole, Sodium alginate, Nanosphere, Supercapacitor, Electrode material

MSC2000:

O646

MA Guo-Fu, MU Jing-Jing, ZHANG Zhi-Guo, SUN Kan-Jun, PENG Hui, LEI Zi-Qiang. Preparation of Polypyrrole/Sodium Alginate Nanospheres and Their Application for High-Performance Supercapacitors[J].Acta Phys. -Chim. Sin., 2013, 29(11): 2385-2391.

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Preparation of Polypyrrole/Sodium Alginate Nanospheres and Their Application for High-Performance Supercapacitors

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