Mn3O4/石墨烯复合材料的制备与电化学性能研究

doi:10.13208/j.electrochem.150414

电化学（中英文） ›› 2015, Vol. 21 ›› Issue (4): 326-331. doi: 10.13208/j.electrochem.150414

Mn₃O₄/石墨烯复合材料的制备与电化学性能研究

杨姗姗，张倩，林雄贵，郑明森，董全峰^*

厦门大学固体表面物理化学国家重点实验室，化学化工学院化学系，福建厦门361005

收稿日期:2015-04-14 修回日期:2015-05-15 出版日期:2015-08-28 发布日期:2015-08-28
通讯作者: 董全峰 E-mail:qfdong@xmu.edu.cn
基金资助:
国家自然科学基金项目（No.20720150042，No.21321062）及973项目（No.2015CB251102）资助

Synthesis and Electrochemical Performance of Mn₃O₄/Graphene Composites

YANG Shan-shan, ZHANG Qian, LIN Xiong-gui, ZHENG Ming-sen, DONG Quan-feng^*

State Key Lab of Physical Chemistry of Solid Surfaces, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, Fujian, China

Received:2015-04-14 Revised:2015-05-15 Published:2015-08-28 Online:2015-08-28
Contact: DONG Quan-feng E-mail:qfdong@xmu.edu.cn

摘要/Abstract

摘要： 本文以氧化石墨烯（GO）溶液为氧化剂，采用水热法使GO直接氧化Mn(Ac)₂制备Mn₃O₄/石墨烯复合材料，并通过在制备过程中加入氨水提高了复合材料中GO的还原程度与Mn₃O₄颗粒的分散性. 制得的Mn₃O₄/石墨烯复合材料表现出优异的电化学性能. 在0.5 A·g^-1的电流密度下复合材料质量比容量可达到850 mAh·g^-1，0.5 A·g^-1时充放电循环测试200周容量保持率为99%.

关键词: 锂离子电池, 负极材料, Mn₃O₄, 石墨烯

Abstract: The Mn₃O₄/Graphene composites were synthesized by hydrothermal method with the in-situ redox reaction of graphene oxide (GO) and manganese acetate (Mn(Ac)₂). The phase structures and morphologies of the materials were characterized by XRD, SEM and TEM. The XPS and IR techniques were used for studying the residual function groups of reduced graphene oxide (RGO). The electrochemical performances of the hybrids were tested in a coin cell. Results showed that the composites prepared with the addition of ammonia water (RM-A) have better performance. The graphenes in RM-A were better-reduced and the Mn3O4 particles were much smaller. The Mn3O4/Graphene composites exhibited a high specific capacity with good rate capability and cycle stability. At the test current density of 0.5 A·g^-1, the composites demonstrated a capacity of 850 mAh·g^-1, and no capacity decays were observed up to 200 cycles.

Key words: lithium-ion battery, anode materials, Mn₃O₄, graphene

中图分类号:

O646

杨姗姗, 张倩, 林雄贵, 郑明森, 董全峰. Mn₃O₄/石墨烯复合材料的制备与电化学性能研究[J]. 电化学（中英文）, 2015, 21(4): 326-331.

YANG Shan-shan, ZHANG Qian, LIN Xiong-gui, ZHENG Ming-sen, DONG Quan-feng. Synthesis and Electrochemical Performance of Mn₃O₄/Graphene Composites[J]. Journal of Electrochemistry, 2015, 21(4): 326-331.

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链接本文: https://electrochem.xmu.edu.cn/CN/10.13208/j.electrochem.150414

https://electrochem.xmu.edu.cn/CN/Y2015/V21/I4/326

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Mn₃O₄/石墨烯复合材料的制备与电化学性能研究

Synthesis and Electrochemical Performance of Mn₃O₄/Graphene Composites

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