Critical size of a nano SnO2 electrode for Li-secondary battery
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- Critical size of a nano SnO2 electrode for Li-secondary battery
- Kim, C; Noh, M; Choi, M; Cho, Jaephil; Park, B
- Electrodes; Hydrothermal synthesis; Lithium batteries; Tin compounds; Transmission electron microscopy; X ray diffraction analysis
- Issue Date
- AMER CHEMICAL SOC
- CHEMISTRY OF MATERIALS, v.17, no.12, pp.3297 - 3301
- SnO2 nanoparticles with different sizes of ∼3, ∼4, and ∼8 nm were synthesized using a hydrothermal method at 110, 150, and 200°C, respectively. The results showed that the ∼3 nm-sized SnO 2 nanoparticles had a superior capacity and cycling stability as compared to the ∼4 and ∼8 nm-sized ones. The ∼3 nm-sized nanoparticles exhibited an initial capacity of 740 mAh/g with negligible capacity fading. The electrochemical 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-sized SnO2 nanoparticles after electrochemical tests did not aggregate into larger Sn clusters, in contrast to those observed with the ∼4 and ∼8 nm-sized ones.
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