Preparation of LiMn1<italic style="font-style: italic">-x</italic>Mg<italic style="font-style: italic">x</italic>PO4/C cathode materials by microwave-assisted solvothermal method

ZHU Jihua; CHEN Yao; QIU Xiulian; HUANG Yuming; ZHENG Cheng; YANG Wei

doi:10.11949/0438-1157.20190027

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Preparation of LiMn₁_-xMg_xPO₄/C cathode materials by microwave-assisted solvothermal method

Material science and engineering\, nanotechnology | 更新时间：2026-07-24

- Preparation of LiMn₁_-xMg_xPO₄/C cathode materials by microwave-assisted solvothermal method
- CIESC Journal Vol. 70, Issue 7, Pages: 2775-2785(2019)
- 作者机构：
  
  广州大学化学化工学院，广东广州 510006
- 作者简介：
- 基金信息：
- DOI：10.11949/0438-1157.20190027
  CLC： TM 912
- Received：09 January 2019，
  
  Revised：2019-04-16，
  
  Online First：24 July 2026，
  
  Published：05 July 2019
- 稿件说明：
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朱计划, 陈姚, 丘秀莲, 黄宇明, 郑成, 杨伟. 微波辅助溶剂热法制备LiMn_1-_xMg_xPO₄/C正极材料[J]. 化工学报, 2019, 70(7): 2775-2785 DOI: 10.11949/0438-1157.20190027.

ZHU Jihua, CHEN Yao, QIU Xiulian, HUANG Yuming, ZHENG Cheng, YANG Wei. Preparation of LiMn_1-_xMg_xPO₄/C cathode materials by microwave-assisted solvothermal method[J]. CIESC Journal, 2019, 70(7): 2775-2785 DOI: 10.11949/0438-1157.20190027.
朱计划, 陈姚, 丘秀莲, 黄宇明, 郑成, 杨伟. 微波辅助溶剂热法制备LiMn_1-_xMg_xPO₄/C正极材料[J]. 化工学报, 2019, 70(7): 2775-2785 DOI: 10.11949/0438-1157.20190027. DOI：

ZHU Jihua, CHEN Yao, QIU Xiulian, HUANG Yuming, ZHENG Cheng, YANG Wei. Preparation of LiMn_1-_xMg_xPO₄/C cathode materials by microwave-assisted solvothermal method[J]. CIESC Journal, 2019, 70(7): 2775-2785 DOI: 10.11949/0438-1157.20190027. DOI：

摘要

采用微波辅助溶剂热法的合成途径，成功制备出镁掺杂的磷酸锰镁锂(LiMn

/C)电极材料。采用X-射线衍射、扫描电镜、恒电流充放电等测试方法对晶体结构，微观形态和电化学性能进行表征。结果表明微波辅助溶剂热样品LiMn

-x

/C为具备较大比表面积和介孔结构的片层状形貌材料。该片层状纳米结构有利于锂离子脱嵌/镶嵌反应，Mg

掺杂在片层状纳米晶体合成过程中发挥着重要作用，可以提高材料的电化学活性和电化学表现。其中LiMn

0.95

0.05

/C材料在0.1 C和5 C倍率下最高可逆放电容量分别为141.2和95.3 (mA·h)/g，具备较高的放电容量和倍率性能表现。与传统溶剂热法相比，微波辅助溶剂热法的反应时间显著降低且制备得到的材料具备优异的电化学性能表现，对于制备其他锂离子电池材料具有指导意义。

Abstract

Magnesium-doped lithium manganese phosphate(LiMn

-x

/C) electrode materials were successfully prepared by microwave-

assisted solvothermal synthesis. X-Ray diffraction

scanning electron microscope

thermogravimetry and Brunaur-Emmett-Teller method were employed to characterize crystal structures and morphology

and the electrochemical characteristics of the as-prepared materials were evaluated by galvanostatic charge/discharge

cyclic voltammetry and AC impedance method. The results showed that the plate-like LiMn

-x

/C samples

which were synthesized from the microwave-assisted solvothermal method

possessed large specific surface area and well-defined mesoporous structure. In particular

doping exerts a significant effect on synthesizing flake-like nanocrystal which favors lithium-ion extraction/insertion reactions

improving the electrochemical activity and electrochemical performance of LiMnPO

/C material. As a result

the LiMn

0.95

0.05

/C nanoparticle exhibited a high reversible capacity of 141.2 and 95.3 (mA·h)/g at 0.1 C and 5 C

respectively

exhibited outstanding charge/discharge performance and rate capability. Compared to conventional solvothermal synthetic route

microwave-assisted solvothermal approach led to a significant decrease in the reaction time and the as-prepared material possessed excellent electrochemical performance. It is extraordinary and remarkable for the preparation of high-performance LiMnPO

cathode material

providing a new method for the preparation of electrode materials for Li-ion batteries.

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references

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Preparation of LiMn1-xMgxPO4/C cathode materials by microwave-assisted solvothermal method

DOI：10.11949/0438-1157.20190027

摘要

Abstract

关键词

Keywords

references

Preparation of LiMn₁_-xMg_xPO₄/C cathode materials by microwave-assisted solvothermal method