三维多级孔类石墨烯载三氧化二铁锂离子电池负极材料

doi:10.13208/j.electrochem.140913

电化学（中英文） ›› 2015, Vol. 21 ›› Issue (1): 66-71. doi: 10.13208/j.electrochem.140913

三维多级孔类石墨烯载三氧化二铁锂离子电池负极材料

张勤伟，李运勇，沈培康^*

中山大学光电材料与技术国家重点实验室，物理科学与工程技术学院，广东广州510275

收稿日期:2014-09-12 修回日期:2014-11-13 出版日期:2015-02-28 发布日期:2014-11-18
通讯作者: 沈培康 E-mail:stsspk@mail.sysu.edu.cn
基金资助:
国家自然科学基金项目（No. 21073241，No. 51210002）资助

Nanosized Fe₂O₃ on Three Dimensional Hierarchical Porous Graphene-Like Matrices as High-Performance Anode Material for Lithium Ion Batteries

ZHANG Qin-wei, LI Yun-yong, SHEN Pei-kang^*

State Key Laboratory of Optoelectronic Materials and Technologies, School of Physics and Engineering, Sun Yat-sen University, Guangzhou 510275, China

Received:2014-09-12 Revised:2014-11-13 Published:2015-02-28 Online:2014-11-18
Contact: SHEN Pei-kang E-mail:stsspk@mail.sysu.edu.cn

摘要/Abstract

摘要： 采用简单的水解、热处理方法合成三氧化二铁（Fe₂O₃）负载在三维多级孔类石墨烯（3D HPG）上的复合材料. 3D HPG有效的导电网络有利于负载纳米Fe₂O₃，使其呈均匀分散状态，并有效增强纳米复合物的导电率，提高Fe₂O₃利用率，抑制纳米Fe₂O₃的团聚，从而制得稳定、高性能的锂离子电池负极材料. Fe₂O₃-3D HPG电极在50 mA·g^-1电流密度下首次放电容量达1745 mAh·g^-1，50周期放电容量保持于1095 mAh·g^-1.

关键词: Fe₂O₃, 负极材料, 锂离子电池, 三维多级孔类石墨烯材料, 电化学

Abstract: Ferric oxide (Fe₂O₃) as a promising anode material for lithium ion battery is due to its high theoretical capacity (1007 mAh·g^-1), earth abundance and low cost. The nanosized Fe₂O₃on the three dimensional hierarchical porous graphene-like network (denoted as Fe₂O₃-3D HPG) has been synthesized by homogeneous precipitation and heat treatment. The 3D HPG can provide a highly conductive structure in conjunction to support well contacted Fe₂O₃ nanoparticles, and effectively enhance the mechanical strength of the matrices during volume changes, as well as improve the utilization rate of Fe₂O₃ and suppress the aggregation of Fe₂O₃ nanoparticles during Li ion insertion/extraction. As a result, the first discharge capacity of Fe2O3-3D HPG was up to 1745 mAh·g^-1 at 50 mA·g^-1, and after 50 cycles, the retention of the capacity was 1095 mAh·g^-1.

Key words: Fe2O3, anode materials, Li ion batteries, three dimensional hierarchical porous graphene-like matrix, electrochemistry

中图分类号:

O646
TM912.9

张勤伟，李运勇，沈培康*. 三维多级孔类石墨烯载三氧化二铁锂离子电池负极材料[J]. 电化学（中英文）, 2015, 21(1): 66-71.

ZHANG Qin-wei, LI Yun-yong, SHEN Pei-kang*. Nanosized Fe₂O₃ on Three Dimensional Hierarchical Porous Graphene-Like Matrices as High-Performance Anode Material for Lithium Ion Batteries[J]. Journal of Electrochemistry, 2015, 21(1): 66-71.

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三维多级孔类石墨烯载三氧化二铁锂离子电池负极材料

Nanosized Fe₂O₃ on Three Dimensional Hierarchical Porous Graphene-Like Matrices as High-Performance Anode Material for Lithium Ion Batteries

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三维多级孔类石墨烯载三氧化二铁锂离子电池负极材料

Nanosized Fe2O3 on Three Dimensional Hierarchical Porous Graphene-Like Matrices as High-Performance Anode Material for Lithium Ion Batteries

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Nanosized Fe₂O₃ on Three Dimensional Hierarchical Porous Graphene-Like Matrices as High-Performance Anode Material for Lithium Ion Batteries