Abstract
In this article, highly [010]-oriented self-assembled LiCoPO4/C nanoflakes were prepared through simple and facile solution-phase strategies at low temperature and ambient pressure. The formation of 5-hydroxylmethylfurfural and levoglucosan via the dehydration of glucose during the reaction played a key role in mediating the morphology and structure of the resulting products. LiCoPO4 highly oriented along the (010)-facets exposed Li+ ion transport channels, facilitating ultrafast lithium ion transportation. In turn, the unique assembled mesoporous structure and the flake-like morphology of the prepared products benefit lithium ion batteries constructed using two-dimensional (2D) LiCoPO4/C nanoflakes self-assembles as cathodes and commercial Li4Ti5O12 as anodes. The tested batteries provide high capacities of 154.6 mA·h·g−1 at 0.1 C (based on the LiCoPO4 weight of 1 C = 167 mA·h·g−1) and stable cycling with 93.1% capacity retention after 100 cycles, which is outstanding compared to other recently developed LiCoPO4 cathodes.
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Acknowledgements
This work is financially supported by the National Natural Science Foundation of China (Nos. 51671072, 21303042, and 21671096), the Natural Science Foundation of Shenzhen (Nos. JCYJ20170412153139454 and JCYJ20150331101823677), and the Shenzhen Key Laboratory Project (No. ZDSYS201603311013489).
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Hou, Y., Chang, K., Li, B. et al. Highly [010]-oriented self-assembled LiCoPO4/C nanoflakes as high-performance cathode for lithium ion batteries. Nano Res. 11, 2424–2435 (2018). https://doi.org/10.1007/s12274-017-1864-0
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DOI: https://doi.org/10.1007/s12274-017-1864-0