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Acta Physico-Chimica Sinica  2010, Vol. 26 Issue (12): 3175-3180    DOI: 10.3866/PKU.WHXB20101141
5-Sulfosalicylic Acid-Assisted Hydrothermal Synthesis and Supercapacitive Properties of Co-Ni Layered Double Hydroxides
ZHANG Fang1, YUAN Chang-Zhou2, ZHANG Xiao-Gang1, ZHANG Luo-Jiang1, XU Ke1
1. College of Material Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, P. R. China;
2. School of Materials Science and Engineering, Anhui University of Technology, Maanshan 243002, Anhui Province, P. R. China
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Co-Ni layered double hydroxides (CoxNi1-x LDHs) were successfully synthesized by a 5- sulfosalicylic acid (SSA)-assisted hydrothermal process. Structural and morphological characterizations were performed using powder X-ray diffraction (XRD), Fourier transform infrared (FT-IR) spectroscopy, field emission scanning electron microscopy (FE-SEM), and transmission electron microscopy (TEM). The results reveal that different morphologies of CoxNi1-x LDHs could be obtained by tuning the Co/Ni molar ratio. The CoxNi1-x LDHs exhibit petal-like nanospheres that are composed of nanoflakes at a Co molar fraction of 0.24. The LDH of this structure has a specific capacitance of 1735 F·g-1 at a current density of 1 A·g-1 as determined by cyclic voltammetry and galvanostatic charge-discharge.

Key wordsSupercapacitor      Layered double hydroxide      5-Sulfosalicylic acid      Hydrothermal method     
Received: 06 July 2010      Published: 20 October 2010
MSC2000:  O646  

The project was supported by the National Key Basic Research Program of China (2007CB209703) and National Natural Science Foundation of China (20633040, 20873064).

Corresponding Authors: ZHANG Xiao-Gang     E-mail:
Cite this article:

ZHANG Fang, YUAN Chang-Zhou, ZHANG Xiao-Gang, ZHANG Luo-Jiang, XU Ke. 5-Sulfosalicylic Acid-Assisted Hydrothermal Synthesis and Supercapacitive Properties of Co-Ni Layered Double Hydroxides. Acta Physico-Chimica Sinica, 2010, 26(12): 3175-3180.

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