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Perovskite ABO3‐Type MOF‐Derived Carbon Decorated Fe3O4 with Enhanced Lithium Storage Performance
ChemElectroChem ( IF 4 ) Pub Date : 2018-09-14 , DOI: 10.1002/celc.201801099
Li Yang 1 , Ye Tian 1 , Peng Ge 1 , Ganggang Zhao 1 , Tiancheng Pu 2 , Yingchang Yang 3 , Guoqiang Zou 1 , Hongshuai Hou 1 , Lanping Huang 1 , Xiaobo Ji 1
Affiliation  

Recently, the carbonization of metal organic frameworks (MOFs) has become an efficient method to prepare metal‐oxide materials on carbon support, which can provide advantages toward conversion‐type reactions of lithium ion batteries as the size and shape of the materials can be tuned by adjusting the MOF ligands. Formic acid is widely used in MOFs with diverse coordination models, which can further regulate morphologies of the carbonized metal oxides. However, less work is reported on the fabrication of metal oxides with formic acid ligands and their application as electrode materials. Herein, utilizing the self‐assembled MOFs [NH2(CH3)2][FeIIIFeII(HCOO)6] with formic acid ligands as the precursor, a carbon decorated Fe3O4 is successfully prepared, consisting of Fe3O4 nanoparticles with diameters of 40–60 nm and the coated carbon that is stemmed from the organic precursor of formic acid. When used as the electrode materials for lithium‐ion batteries, this composite exhibits good rate capability and stabilized reversible capacity of 1041 mAh g−1 after 50 cycles at 100 mA g−1. These superior properties can be attributed to the synergetic effect of the unique nano/micro structure and uniform dispersion of the conductive carbon provided by this new MOF precursor.

中文翻译:

钙钛矿ABO3型MOF衍生的碳装饰的Fe3O4具有增强的锂存储性能

最近,金属有机骨架(MOF)的碳化已成为在碳载体上制备金属氧化物材料的有效方法,由于可以调节材料的尺寸和形状,因此可以为锂离子电池的转化型反应提供优势。通过调整MOF配体。甲酸广泛用于具有各种配位模型的MOF中,可以进一步调节碳化金属氧化物的形态。然而,关于具有甲酸配体的金属氧化物的制备及其作为电极材料的应用的报道较少。在此,利用自组装的MOF [NH 2(CH 32 ] [Fe III Fe II(HCOO)6用甲酸配体作为前驱体,成功制备了碳装饰的Fe 3 O 4,它由直径为40-60 nm的Fe 3 O 4纳米颗粒和由甲酸的有机前驱体得到的涂层碳组成。当作为电极材料的锂离子电池,该复合物表现出良好的倍率性能和1041毫安克稳定的可逆容量使用-1以100mA克50次循环后-1。这些优异的性能可以归因于独特的纳米/微结构的协同效应以及这种新型MOF前驱体提供的导电碳的均匀分散。
更新日期:2018-09-14
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