Critical Size of a Nano SnO2 Electrode for Li-Secondary Battery
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- 作者：Chunjoong Kim ; Mijung Noh ; Myungsuk Choi ; Jaephil Cho ; and Byungwoo Park
- 刊名：Chemistry of Materials
- 出版年：2005
- 出版时间：June 14, 2005
- 年：2005
- 卷：17
- 期：12
- 页码：3297 - 3301
- 全文大小：697K
- 年卷期：v.17,no.12(June 14, 2005)
- ISSN：1520-5002
文摘
SnO2 nanoparticles with different sizes of ~3, ~4, and ~8 nm were synthesized using a hydrothermalmethod at 110, 150, and 200 
C, respectively. The results showed that the ~3 nm-sized SnO2 nanoparticleshad a superior capacity and cycling stability as compared to the ~4 and ~8 nm-sized ones. The ~3nm-sized nanoparticles exhibited an initial capacity of 740 mAh/g with negligible capacity fading. Theelectrochemical properties of these nanoparticles were superior to those of thin-film analogues.Transmission electron microscopy (TEM) and X-ray diffraction (XRD) confirmed that the ~3 nm-sizedSnO2 nanoparticles after electrochemical tests did not aggregate into larger Sn clusters, in contrast tothose observed with the ~4 and ~8 nm-sized ones.
C, respectively. The results showed that the ~3 nm-sized SnO2 nanoparticleshad a superior capacity and cycling stability as compared to the ~4 and ~8 nm-sized ones. The ~3nm-sized nanoparticles exhibited an initial capacity of 740 mAh/g with negligible capacity fading. Theelectrochemical properties of these nanoparticles were superior to those of thin-film analogues.Transmission electron microscopy (TEM) and X-ray diffraction (XRD) confirmed that the ~3 nm-sizedSnO2 nanoparticles after electrochemical tests did not aggregate into larger Sn clusters, in contrast tothose observed with the ~4 and ~8 nm-sized ones.