Magnetite/graphene nanosheet composites: interfacial interaction and its impact on the durable high-rate performance in lithium-ion batteries
Magnetite/graphene nanosheet composites: interfacial interaction and its impact on the durable high-rate performance in lithium-ion batteries
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磁铁矿/石墨烯纳米片复合材料：界面相互作用及其对锂离子电池持久高倍率性能的影响
DOI：
10.1039/c1ra00402f
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发表时间：
2011-10
期刊：
影响因子：
3.9
通讯作者：
Chen, Xiaohong
中科院分区：
文献类型：
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作者：
Zhou, Jisheng;Song, Huaihe;Ma, Lulu;Chen, Xiaohong
我们深入探讨了纳米Fe3O4与石墨烯纳米片之间的界面相互作用及其对锂离子电池负极材料Fe3O4/石墨烯电化学性能的影响。用Fe(NO3)3·9H2O在石墨烯上直接热解制备了Fe3O4/石墨烯杂化材料。用热重分析、差示扫描量热分析、拉曼光谱、X射线光电子能谱和傅里叶变换红外光谱详细研究了Fe3O4与石墨烯纳米片之间的界面相互作用。结果表明，Fe3O4纳米粒子均匀分散在石墨烯片层上，与石墨烯基面形成较强的共价键(Fe-O-C键)。强的共价键保证了Fe3O4/石墨烯复合电极在大电流密度下的高比容量和长周期循环稳定性。与当前密度500mAhg−1(约0.6C)下的第一次可逆容量相比，200次循环后容量仍保持高达796mAhg−1，没有任何衰落。在1Ag−1(约1.3C)下，可逆容量达到约550mAhg−1,300次循环后仍保持初始容量的97%。揭示了影响金属氧化物负极高倍率和循环稳定性的重要因素，为锂离子电池新型负极材料的设计提供了有效途径。
We explore in-depth the interfacial interaction between Fe3O4 nanoparticles and graphene nanosheets as well as its impact on the electrochemical performance of Fe3O4/graphene anode materials for lithium-ion batteries. Fe3O4/graphene hybrid materials are prepared by direct pyrolysis of Fe(NO3)3·9H2O on graphene sheets. The interfacial interaction between Fe3O4 and graphene nanosheets is investigated in detail by thermogravimetric and differential scanning calorimetry analysis, Raman spectrum, X-ray photoelectron energy spectrum and Fourier transform infrared spectroscopy. It was found that Fe3O4 nanoparticles disperse homogeneously on graphene sheets, and form strong covalent bond interactions (Fe–O–C bond) with graphene basal plane. The strong covalent links ensure the high specific capacity and long-period cyclic stability of Fe3O4/graphene hybrid electrodes for lithium-ion batteries at high current density. The capacity keeps as high as 796 mAhg−1 after 200 cycles without any fading in comparison with the first reversible capacity at the current density of 500 mAg−1 (ca. 0.6 C). At 1 Ag−1 (ca. 1.3 C), the reversible capacity attains ca. 550 mAhg−1 and 97% of initial capacity is maintained after 300 cycles. This work reveals an important factor affecting the high-rate and cyclic stability of metal oxide anode, and provides an effective way to the design of new anode materials for lithium-ion batteries.
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影响因子：
3.9
作者：
C. Dicke;M. Morstein;G. Hähner
通讯作者：
C. Dicke;M. Morstein;G. Hähner
锚定Co3O4纳米粒子的石墨烯作为锂离子电池负极增强可逆容量和循环性能
影响因子：
17.1
作者：
Wu, Zhong-Shuai;Ren, Wencai;Cheng, Hui-Ming
通讯作者：
Cheng, Hui-Ming
DOI：
10.1007/s11595-006-4480-5
发表时间：
2008-09
期刊：
Journal of Wuhan University of Technology-Mater. Sci. Ed.
影响因子：
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作者：
Hong Peng;Xiao Zhang;Kaixun Huang;Huibi Xu
通讯作者：
Hong Peng;Xiao Zhang;Kaixun Huang;Huibi Xu
影响因子：
10.8
作者：
Paek, Seung-Min;Yoo, EunJoo;Honma, Itaru
通讯作者：
Honma, Itaru
一端开口四边形碳纳米管锂离子电池负极材料的合成及高倍率性能
影响因子：
--
作者：
Zhou, Jisheng;Song, Huaihe;Fu, Bocheng;Wu, Bin;Chen, Xiaohong
通讯作者：
Chen, Xiaohong