介孔四氧化三锰纳米棒的快速低成本制备与电化学性能

doi:10.3724/SP.J.1077.2013.13146

无机材料学报 ›› 2013, Vol. 28 ›› Issue (9): 1045-1050.DOI: 10.3724/SP.J.1077.2013.13146 CSTR: 32189.14.SP.J.1077.2013.13146

• 研究快报 • 上一篇

介孔四氧化三锰纳米棒的快速低成本制备与电化学性能

胡英瑛, 温兆银, 靳俊

(中国科学院上海硅酸盐研究所, 上海200050)

收稿日期:2013-03-11 修回日期:2013-03-29 出版日期:2013-09-20 网络出版日期:2013-08-14
作者简介:胡英瑛. E-mail:yyhu@student.sic.ac.cn
基金资助:
National Natural Science Foundation of China (50730001); Chinese Science and Technology Ministry (2007 CB 209700)

Rapid Low-cost Synthesis and Enhanced Electrochemical Properties of Mesoporous Mn₃O₄ Nanorods

HU Ying-Ying, WEN Zhao-Yin, JIN Jun

(Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China)

Received:2013-03-11 Revised:2013-03-29 Published:2013-09-20 Online:2013-08-14
About author:HU Ying-Ying(1985-), female, candidate of PhD. E-mail:yyhu@student.sic.ac.cn
Supported by:
National Natural Science Foundation of China (50730001); Chinese Science and Technology Ministry (2007 CB 209700)

摘要/Abstract

摘要： 仅以乙醇和四水合醋酸锰为原料, 快速低成本地合成了介孔四氧化三锰纳米棒, 并将其应用于锂离子电池负极材料。通过X 射线衍射、热重分析仪、扫描电子显微镜、透射电子显微镜和比表面积仪等分析手段对四氧化三锰样品进行了表征。实验结果表明: 介孔四氧化三锰纳米棒的平均直径约为150 nm, 孔的尺寸范围为6~20 nm, BET比表面积高达37.3 m²/g。同时, 介孔四氧化三锰纳米棒负极材料在141 mA/g的电流密度下循环100次后可逆充放电容量为676.1和662.4 mAh/g, 而且其在不同的电流密度下继续循环80次后可逆放电容量高达850 mAh/g, 体现出了较高的容量、好的循环稳定性能和倍率性能。

关键词: 氧化锰, 介孔, 纳米棒, 锂离子电池

Abstract: Mesoporous Mn₃O₄ nanorods, as anode materials for Li-ion batteries, were fabricated by a novel process using only ethanol and manganese acetate tetrahydrate as the reaction precursors. The as-prepared mesoporous Mn₃O₄ nanorods were characterized by X-ray diffraction, thermogravimetry-differential scanning calorimetry, scanning electron microscope, transmission electron microscope and Brunauer-Emmett-Teller surface area analyzer. The results indicate that the average diameter of mesoporous Mn₃O₄ nanorods is about 150 nm, and their pore size is mainly distributed in the range of 6–20 nm with the BET specific surface area as high as 37.3 m²/g. The Mn₃O₄nanorods anode displays reversible capacities of 676.1 and 662.4 mAh/g after 100 cycles at a current rate of 141 mA/g, demonstrating a higher capacity and more stable cyclability than Mn₃O₄ nano-powders. Furthermore, excellent rate capability is realized with the mesoporous Mn₃O₄ nanorods. A capacity of 850 mAh/g is retained after 80 cycles at various current densities.

Key words: manganese oxide, mesoporous, nanorod, lithium-ion battery

中图分类号:

TB34

胡英瑛, 温兆银, 靳俊. 介孔四氧化三锰纳米棒的快速低成本制备与电化学性能[J]. 无机材料学报, 2013, 28(9): 1045-1050.

HU Ying-Ying, WEN Zhao-Yin, JIN Jun. Rapid Low-cost Synthesis and Enhanced Electrochemical Properties of Mesoporous Mn₃O₄ Nanorods[J]. Journal of Inorganic Materials, 2013, 28(9): 1045-1050.

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介孔四氧化三锰纳米棒的快速低成本制备与电化学性能

Rapid Low-cost Synthesis and Enhanced Electrochemical Properties of Mesoporous Mn₃O₄ Nanorods

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介孔四氧化三锰纳米棒的快速低成本制备与电化学性能

Rapid Low-cost Synthesis and Enhanced Electrochemical Properties of Mesoporous Mn3O4 Nanorods

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Rapid Low-cost Synthesis and Enhanced Electrochemical Properties of Mesoporous Mn₃O₄ Nanorods