Novel precursor of Mn(PO3(OH))·3H2O for synthesizing LiMn0.5Fe0.5PO4 cathode material

Jun Zong, Qingwen Peng, Jinpeng Yu, Xingjiang Liu

研究成果: Article査読

23 被引用数 (Scopus)

抄録

A brand new method for synthesizing Mn(PO3(OH))·3H 2O is attained in this paper. During this process, pure flake-like Mn(PO3(OH))·3H2O precipitate is prepared using C2H5OH as initiator. Besides that, LiMn 0.5Fe0.5PO4/C is successfully synthesized from the Mn(PO3(OH))·3H2O precursor at 650°C for the first time. Thermogravimetric analysis (TGA), X-ray diffraction (XRD) and scanning electron microscopy (SEM) are applied in the characterization of the Mn(PO3(OH))·3H2O precursor and LiMn 0.5Fe0.5PO4/C. High-resolution transmission electron microscopy (HRTEM) is also used to investigate the morphology of LiMn0.5Fe0.5PO4/C. X-ray photoelectron spectroscopy (XPS) and galvanostatic charge and discharge test are employed to characterize the Mn(PO3(OH))·3H2O precursor and LiMn0.5Fe0.5PO4 material, respectively. The as-prepared LiMn0.5Fe0.5PO4/C material exhibited a reversible capacity of 131 mAh g-1 at 0.05 C. It can be confirmed that the incorporation of Fe into LiMnPO4 can significantly improve the electrochemical properties for improving the conductivity of the material and facilitating the Li+ diffusion. In addition, a capacity of 120 mAh g-1 is still delivered at 0.05 C rate with a capacity retention of about 91% after 25 cycles, and reversible capacity can reach 105 mAh g-1 at 1 C.

本文言語English
ページ(範囲)214-219
ページ数6
ジャーナルJournal of Power Sources
228
DOI
出版ステータスPublished - 2013

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Energy Engineering and Power Technology
  • Renewable Energy, Sustainability and the Environment
  • Physical and Theoretical Chemistry

フィンガープリント 「Novel precursor of Mn(PO<sub>3</sub>(OH))·3H<sub>2</sub>O for synthesizing LiMn<sub>0.5</sub>Fe<sub>0.5</sub>PO<sub>4</sub> cathode material」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

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