Citation: Yuanchao LI, Weifeng HUANG, Pengchao LIANG, Zifang ZHAO, Baoyan XING, Dongliang YAN, Li YANG, Songlin WANG. Effect of heterogeneous dual carbon sources on electrochemical properties of LiMn_0.8Fe_0.2PO₄/C composites[J]. Chinese Journal of Inorganic Chemistry, ;2024, 40(4): 751-760. doi: 10.11862/CJIC.20230252 shu

Effect of heterogeneous dual carbon sources on electrochemical properties of LiMn_0.8Fe_0.2PO₄/C composites

1.
School of Chemistry and Chemical Engineering, Henan Institute of Science and Technology, Xinxiang, Henan 453003, China
2.
Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), Nankai University, Tianjin 300071, China

Corresponding author: Yuanchao LI, liyuanchaozzu@126.com Zifang ZHAO, zzf@hist.edu.cn
Received Date: 2 July 2023
Revised Date: 23 January 2024

Figures(10)

LiMn_0.8Fe_0.2PO₄/C composite was synthesized using sucrose and graphite as heterogeneous carbon sources through a solid-state method assisted by aqueous rheological phase. The effect of different addition methods of graphite on electrochemical performances was studied. The LiMn_0.8Fe_0.2PO₄/C composite was characterized by the X-ray diffraction (XRD), N₂ adsorption-desorption, scanning electron microscopy (SEM), and transmission electron microscopy (TEM). The results showed that different graphite coating processes had obvious effects on the structure and electrochemical properties of the materials. The sample, which the graphite was added after the precursor was calcined, showed a high purity and uniform elliptic morphology. And its specific discharge capacity was 149 mAh·g^-1 (87% of the theoretical specific capacity) at 0.1C. The specific discharge capacity was 133 mAh·g^-1 at 5C. After 300 cycles at 2C, its capacity was maintained at 127 mAh·g^-1, whose decay rate was 1.9%, showing excellent electrochemical performances.
- LiMn_0.8Fe_0.2PO₄/C,
- secondary coating,
- aqueous rheological phase,
- cathode material,
- Li-ion battery
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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

Effect of heterogeneous dual carbon sources on electrochemical properties of LiMn0.8Fe0.2PO4/C composites

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通讯作者: 陈斌, bchen63@163.com

Effect of heterogeneous dual carbon sources on electrochemical properties of LiMn_0.8Fe_0.2PO₄/C composites