Ascorbic acid-assisted solvothermal synthesis of LiMn_0.9Fe_0.1PO₄/C nanoplatelets with enhanced electrochemical performance for lithium ion batteries

作者：Zuo, Pengjian^*; Cheng, Guangyu; Wang, Liguang; Ma, Yulin; Du, Chunyu; Cheng, Xinqun; Wang, Zhenbo; Yin, Geping

来源：Journal of Power Sources, 2013, 243: 872-879.

DOI：10.1016/j.jpowsour.2013.06.101

• Lithium manganese phosphate
• Nanoplatelet structure
• Ascorbic acid-assisted solvothermal synthesis
• Lithium ion battery

Morphology-controlled LiMn0.9Fe0.1PO4 nanoplatelets as high performance cathode material for lithium ion batteries have been synthesized via a simple ascorbic acid-assisted solvothermal process in water-ethanol solvent. The phase structure and morphology of the products were characterized by XRD, SEM and TEM. The results reveal that decreasing the crystallite size along b-axis direction and increasing the surface area of (010) plane can shorten Li+ diffusion path and increase the electrode reaction activity. The LiMn(0.9)Fe0.1PO(4) nanoplatelet holds the high capacity of 145 mA h g(-1), 134 mA h g(-1), 119 mA h g(-1) 97 mA h g(-1) and 68 mA h g(-1) at 0.1 C, 0.5 C, 1 C, 5 C and 10 C respectively, and it can retain 75% of the initial reversible capacity even after 100 cycles at 10 C rate.

• 单位
  哈尔滨工业大学