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The Synthesis of LiMnxFe1−xPO4/C Cathode Material through Solvothermal Jointed with Solid-State Reaction

1
Institute of Nuclear & New Energy Technology, Tsinghua University, Beijing 100084, China
2
State Key Laboratory of Automotive Safety and Energy, Tsinghua University, Beijing 100084, China
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State Key Laboratory of New Ceramic and Fine Processing, Tsinghua University, Beijing 100084, China
*
Author to whom correspondence should be addressed.
Academic Editor: Haolin Tang
Materials 2016, 9(9), 766; https://doi.org/10.3390/ma9090766
Received: 6 June 2016 / Revised: 1 August 2016 / Accepted: 29 August 2016 / Published: 8 September 2016
LiMnxFe1−xPO4/C material has been synthesized through a facile solid-state reaction under the condition of carbon coating, using solvothermal-prepared LiMnPO4 and LiFePO4 as precursors and sucrose as a carbon resource. XRD and element distribution analysis reveal completed solid-state reaction of precursors. LiMnxFe1−xPO4/C composites inherit the morphology of precursors after heat treatment without obvious agglomeration and size increase. LiMnxFe1−xPO4 solid solution forms at low temperature around 350 °C, and Mn2+/Fe2+ diffuse completely within 1 h at 650 °C. The LiMnxFe1−xPO4/C (x < 0.8) composite exhibits a high-discharge capacity of over 120 mAh·g−1 (500 Wh·kg−1) at low C-rates. This paves a way to synthesize the crystal-optimized LiMnxFe1−xPO4/C materials for high performance Li-ion batteries. View Full-Text
Keywords: LiMnxFe1−xPO4; solvothermal; solid-state reaction; lithium ion batteries LiMnxFe1−xPO4; solvothermal; solid-state reaction; lithium ion batteries
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MDPI and ACS Style

He, X.; Wang, J.; Dai, Z.; Wang, L.; Tian, G. The Synthesis of LiMnxFe1−xPO4/C Cathode Material through Solvothermal Jointed with Solid-State Reaction. Materials 2016, 9, 766.

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