A facile one-pot synthesis of FeOx/carbon/graphene composites as superior anode materials for lithium-ion batteries
A facile one-pot synthesis of FeOx/carbon/graphene composites as superior anode materials for lithium-ion batteries
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DOI：
10.1016/j.electacta.2017.03.109
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发表时间：
2017-05-01
影响因子：
6.6
通讯作者：
Akiyama, Tomohiro
中科院分区：
文献类型：
--
作者：
Han, Cheng-Gong;Zhu, Chunyu;Akiyama, Tomohiro
氧化铁因其理论容量高、成本低和环境友好而被认为是最有前途的负极材料之一。然而，目前还没有探索出通过减轻活性颗粒的体积变化和团聚来制备具有高电化学性能的氧化铁的简单有效的方法。在这项工作中，FeOx/碳/石墨烯复合材料是通过一种简单的溶液燃烧合成方法在几分钟内一步制备的。表征表明 FeOx 纳米颗粒在石墨烯基质中分散良好。石墨烯的存在有效地减轻了FeOx纳米粒子的团聚，并适应循环过程中的体积变化，从而产生优异的电化学性能。 FeOx/碳/石墨烯（31.4 wt.% 石墨烯）在 0.4 A g（1）下循环 100 次后可提供更高的放电容量，达到 824 mAh g（1），而不含石墨烯的复合材料的放电容量为 301 mAh g（1）。这种易于制备的FeOx/碳/石墨烯复合材料具有优异的电化学性能，可以被认为是一种有前途的锂离子电池负极材料。 (C) 2017 Elsevier Ltd. 保留所有权利。
Iron oxide has been considered as one of the most promising anode materials due to its high theoretical capacity, low cost and environmental friendliness. However, few simple and effective method is explored for preparing iron oxides with high electrochemical performance via alleviating the volume change and agglomeration of active particles. In this work, FeOx/carbon/graphene composites are fabricated by a facile solution combustion synthesis within several minutes in one step. Characterization demonstrates that FeOx nanoparticles are well-dispersed in the graphene matrix. The presence of graphene effectively alleviates the agglomeration of FeOx nanoparticles, and accommodates the volume changes during the cycling process, thereby resulting in the excellent electrochemical performance. FeOx/carbon/graphene (31.4 wt.% graphene) delivers a higher discharge capacity of 824 mAh g (1) after 100 cycles at 0.4 A g (1), in comparison to the value of 301 mAh g (1) for the composite without graphene. This easily prepared FeOx/carbon/graphene composite with excellent electrochemical performance can be considered as one promising anode material used for lithium-ion batteries. (C) 2017 Elsevier Ltd. All rights reserved.