Cornlike ordered N-doped carbon coated hollow Fe3O4 by magnetic self-assembly for the application of Li-ion battery
Cornlike ordered N-doped carbon coated hollow Fe3O4 by magnetic self-assembly for the application of Li-ion battery
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Cornlike磁性自组装有序氮掺杂碳包覆空心Fe3O4在锂离子电池中的应用
DOI：
10.1016/j.cej.2018.09.015
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发表时间：
2019-01-15
影响因子：
15.1
通讯作者：
Zhao, Yanming
中科院分区：
文献类型：
--
作者：
Wang, Yang;Chen, Lei;Zhao, Yanming
采用简单的方法制备了玉米状有序N掺杂碳包覆空心Fe_3 O_4（OH-Fe_3 O_4@NC）复合材料。这种独特的结构是由数百个N掺杂碳包覆的空心Fe 3 O 4纳米球组成。连续的碳壳和中空结构解决了Fe 3 O 4基电极的不可逆性问题。OH-Fe 3 O 4 @NC复合材料具有独特的玉米状有序结构，作为锂离子电池负极材料具有良好的电化学性能。在0.1 A g（-1）下，50次循环后，其可逆容量为1316 mA h g（-1），并且具有显著的倍率性能（在1、4和10 A g（-1）下分别为725、551和361 mA h g（-1））。研究结果表明，OH-Fe 3 O 4 @NC复合材料是下一代锂离子电池极有前途的高容量负极材料。
Cornlike ordered N-doped carbon coated hollow Fe3O4 (OH-Fe3O4@NC) composites are prepared through a facile strategy. The unique structure is composed of hundreds of N-doped carbon coated hollow Fe3O4 nanospheres. Successive carbon shell and hollow structure address the irreversibility issue of Fe3O4-based electrodes. Owing to the unique cornlike ordered structure, the as-prepared OH-Fe3O4@NC composites exhibit appealing electrochemical performance as anode materials for lithium-ion batteries (LIBs). It delivers a high reversible capacity of 1316 mA h g(-1) at 0.1 A g(-1) after 50 cycles and a remarkable rate performance (725, 551 and 361 mA h g(-1) at 1, 4, and 10 A g(-1), respectively). Our results demonstrate that the OH-Fe3O4@NC composites are the promising anode materials with high capacity for next generation LIBs.