کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
181385 | 459401 | 2009 | 4 صفحه PDF | دانلود رایگان |
Surface free energies become increasingly important in affecting voltage profiles and solubility limits of first-order phase transformations as electrode particles approach nanometer dimensions. Here, we show that the presence of a distribution in crystallite sizes at nanometer dimensions (<100 nm) can qualitatively modify the voltage profile around a first-order phase transformation. The plateau voltage of a first-order phase transformation depends on crystallite dimensions and a distribution of crystallite sizes leads to a spectrum of transformation voltages that produces a sloping voltage profile similar to that of a solid solution. This suggests that the voltage profile of a collection of nano-electrode particles can be tailored not only by modifying chemistry, but also with surface treatment and through control of particle size distribution.
Journal: Electrochemistry Communications - Volume 11, Issue 4, April 2009, Pages 881–884