Citation: SHANG Wei-Li, KONG Ling-Yong, CHEN Ling-Zhen, HUANG Shao-Zhen, TANG Yuan, REN Cheng. Preparation and Electrochemical Performance of LiMn_0.6Fe_0.4PO₄/C with High Energy Density[J]. Chinese Journal of Inorganic Chemistry, ;2019, 35(3): 485-492. doi: 10.11862/CJIC.2019.062 shu

Preparation and Electrochemical Performance of LiMn_0.6Fe_0.4PO₄/C with High Energy Density

1.
Shenzhen Dynanonic Co., Ltd., Shenzhen, Guangdong 518052, China
2.
Foshan Dynanonic Co., Ltd., Foshan, Guangdong 528000, China

Corresponding author: SHANG Wei-Li, shangweili1012@126.com KONG Ling-Yong, kly2008@126.com
Received Date: 8 November 2018
Revised Date: 22 December 2018

Figures(9)

The LiMn_0.6Fe_0.4PO₄/C materials with high energy density have been prepared successfully by improved sol-gel method, using Mn(NO₃)₂, Fe(NO₃)₃·9H₂O, NH₄H₂PO₄ and LiOH·H₂O as main raw materials. The primary nanoparticles were constructed into secondary particles by the framework of metal and ligand complexes, and the obtained cathode materials showed excellent electrochemical performance and rather high energy density. The energy density of batteries could be increased by 30%. The crystal structure, morphology and electrochemical performance of the materials were systematically characterized by X-ray diffraction (XRD), scanning electron microscope (SEM), transmission electron microscope (TEM), electrochemical impedance spectroscopy (EIS), tap density, particle size and electrochemical tests. The results showed that LiMn_0.6Fe_0.4PO₄/C not only has high tap density and median voltage, but also has excellent electrochemical performances. The tap density was 1.3 g·cm^-3. The median voltage of discharge was 3.85 V at 1C, the capacity still achieved 142.3 mAh·g^-1 after 100 cycles.
- lithium ion battery,
- cathode material,
- high energy density,
- LiMn_0.6Fe_0.4PO₄/C
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通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

Preparation and Electrochemical Performance of LiMn0.6Fe0.4PO4/C with High Energy Density

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通讯作者: 陈斌, bchen63@163.com

Preparation and Electrochemical Performance of LiMn_0.6Fe_0.4PO₄/C with High Energy Density