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In situ growth of ultrafine tin oxide nanocrystals embedded in graphitized carbon nanosheets for use in high-performance lithium-ion batteries
| Content Provider | Semantic Scholar |
|---|---|
| Author | Fu, Wei Ling Du, Fei-Hu Wang, Kai-Xue Ye, Tian-Nan Wei, Xiao Chen, Jie-Sheng |
| Copyright Year | 2014 |
| Abstract | A crystal-facet-induced formation method has been developed for the fabrication of graphitized carbon nanosheets (CNS) embedded with ultrafine SnO2 nanocrystals grown in situ upon calcination under a N2 atmosphere. The obtained SnO2–CNS composite exhibits superior electrochemical performance when used as the anode material for lithium-ion batteries. Cycled at high current densities of 0.5, 1.0 and 10.0 A g−1 for 50 cycles, the composite material delivers large discharge capacities of 826, 728, and 400 mA h g−1, respectively. The graphitized carbon nanosheets facilitate both ion and electron transportation and act as an efficient buffer to accommodate the volume changes generated upon Li-ion insertion–extraction. The ultrafine SnO2 nanocrystals significantly shorten the diffusion distances of the lithium ions and also provide a large contact area for the interface reaction between the anode material and lithium-ions during lithiation or delithiation, leading to a remarkably high specific capacity and good cycling stability. |
| Starting Page | 6960 |
| Ending Page | 6965 |
| Page Count | 6 |
| File Format | PDF HTM / HTML |
| DOI | 10.1039/C4TA00021H |
| Alternate Webpage(s) | https://pubs.rsc.org/en/content/getauthorversionpdf/C4TA00021H |
| Alternate Webpage(s) | https://doi.org/10.1039/C4TA00021H |
| Volume Number | 2 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
