1. LiMnPO4 nanoplates grown via a facile surfactant-mediated solvothermal reaction for high-performance Li-ion batteries.
- Author
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Zhang, Wenxuan, Shan, Zhongqiang, Zhu, Kunlei, Liu, Shengzhong, Liu, Xiaoyan, and Tian, Jianhua
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LITHIUM compounds , *DIETHYLENE glycol , *CRYSTAL growth , *X-ray diffraction , *SCANNING electron microscopy - Abstract
LiMnPO 4 nanoplates with a thickness of ca. 13 nm have been synthesised by a facile solvothermal approach in mixed water-DEG (diethylene glycol) solvents with the mediation of CTAB (cetyltrimethyl ammonium bromide). The coordinative effect of CTAB and DEG promotes the crystal orientation growth of LiMnPO 4 along ac plane. The structure and morphology of the product were characterized by XRD, SEM, TEM, BET, FT-IR and Raman spectra. A possible formation mechanism of LiMnPO 4 nanoplates assembled in layer-by-layer style is put forward on the basis of the above characterization results. A continuous and uniform carbon layer is coated on the surface of the LiMnPO 4 nanoplates after heat treatment with sucrose. The obtained LiMnPO 4 /C composite exhibits high discharge capacities of 148.6 mA h g −1 at 0.1 C, 127.6 mA h g −1 at 1 C and 93.8 mA h g −1 at 5 C and it possesses excellent cycling performance with capacity retention ratios of 96.9% and 92.7% after 100 cycles and 500 cycles at 0.1 C and 1 C, respectively. [ABSTRACT FROM AUTHOR]
- Published
- 2015
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