LiMnPO4 nanoplates grown via a facile surfactant-mediated solvothermal reaction for high-performance Li-ion batteries. (20th January 2015)

• Record Type: Journal Article
• Authors: Zhang, Wenxuan; Shan, Zhongqiang; Zhu, Kunlei; Liu, Shengzhong; Liu, Xiaoyan; Tian, Jianhua
• Is Part Of: Electrochimica acta. Volume 153(2015)
• Page Start: 385
• Page End: 392
• Publication Date: 2015-01-20
• Subjects: LiMnPO4 -- Surfactant-mediated solvothermal -- Nanoplates -- Cathode material -- Li-ion batteries; Electrochemistry -- Periodicals; Electrochemistry, Industrial -- Periodicals; 541.37
• DOI: 10.1016/j.electacta.2014.12.012
• Languages: English
• ISSNs: 0013-4686

Abstract

Abstract: LiMnPO4 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 LiMnPO4 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 LiMnPO4 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 LiMnPO4 nanoplates after heat treatment with sucrose. The obtained LiMnPO4 /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.