کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5365816 | 1388338 | 2007 | 7 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Investigation of zinc powder modified by ultrasonic impregnation of rare earth lanthanum Investigation of zinc powder modified by ultrasonic impregnation of rare earth lanthanum](/preview/png/5365816.png)
Different lanthanum conversion films coated directly on zinc particles are prepared by ultrasonic impregnation with the variable concentration of lanthanum nitrate solution and the adjusted ultrasonic time to modify zinc powder, and the characterization as well as electrochemical behavior of zinc are analyzed using scanning electron microscopy, energy dispersion spectrometry, potentiodynamic polarization, cyclic voltammetry. The lanthanum conversion films are found to enhance the property of corrosion resistance, suppress the dendritic growth and reduce the capacity loss for zinc electrode made of such modified zinc powder. Furthermore, the particle size of zinc powder immersed in lanthanum nitrate solution becomes thin and slim under the effect of ultrasound, which is beneficial to improve the electrochemical reaction activity of zinc powder at the assurance of high corrosion resistance for zinc electrode.
Journal: Applied Surface Science - Volume 253, Issue 24, 15 October 2007, Pages 9443-9449