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Proceedings of the 7th National Conference on Functional Materials and Applications (FMA 2010 E-BOOK)

Changsha,China,10.16-10.18,2010

ISBN: 978-1-935068-41-9 Scientific Research Publishing, USA

E-Book 2313pp Pub. Date: October 2010

Category: Chemistry & Materials Science

Price: $360

Title: Synthesis of Nanosized Ni (OH)2 by Supersonic-assistant Precipitation and the Electrochemical Performance of its Composite Electrodes
Source: Proceedings of the 7th National Conference on Functional Materials and Applications (FMA 2010 E-BOOK) (pp 2237-2242)
Author(s): Liang-guo Huang, School of Physics Optoelectronic Engineering, Guangdong University of Technology, Guangzhou, China;
Yan-juan Zhu, School of Physics Optoelectronic Engineering, Guangdong University of Technology, Guangzhou, China;
Zhuo-jun Zhou, School of Physics Optoelectronic Engineering, Guangdong University of Technology, Guangzhou, China;
Xian-cong Ye, School of Physics Optoelectronic Engineering, Guangdong University of Technology, Guangzhou, China;
Shang-gai Wu, School of Physics Optoelectronic Engineering, Guangdong University of Technology, Guangzhou, China;
Han-zhong Zheng, School of Physics Optoelectronic Engineering, Guangdong University of Technology, Guangzhou, China;
Xiao-ran Lin, School of Physics Optoelectronic Engineering, Guangdong University of Technology, Guangzhou, China;
Abstract: With polyethylene glycol as dispersant, Nickel hydroxide was prepared by precipitation method (powder S1)and supersonic precipitation method(powder S2) . The samples were characterized (through) using XRD, TEM and Particle size analyer. The result showed that the sample is β-Ni(OH)2 and the micro-shape is needle-like. The complex electrodes were prepared by mixing different wt. % samples with commercial micro-size spherical nickel. Galvanostatic charge/discharge test indicated that discharge capacity of compledx electrode C (mixed 6 wt.% nanosized Ni(OH)2 with spherical nickel) reached 267.5mAh/g, which is 16 % higher than that (230.7 mAh / g) of spherical Ni(OH)2. The charge voltage is lower than that of the spherical Ni(OH)2 electrode. On the contrary, the discharge capacity of electrode F was only 250.3mAh/g. The performance of powers S1 and S2 was compared and the principle of supersonic was discussed.
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