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Porous Fe2O3 Nanoparticles as Lithium-Ion Battery Anode Materials
ACS Applied Nano Materials ( IF 5.3 ) Pub Date : 2021-09-01 , DOI: 10.1021/acsanm.1c01312 Chi Zhang 1 , Zhengfan Chen 1 , Haiyan Wang 2 , Yanmei Nie 1 , Jun Yan 2
ACS Applied Nano Materials ( IF 5.3 ) Pub Date : 2021-09-01 , DOI: 10.1021/acsanm.1c01312 Chi Zhang 1 , Zhengfan Chen 1 , Haiyan Wang 2 , Yanmei Nie 1 , Jun Yan 2
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Currently, because of higher theoretical capacity compared with other materials, the research of Fe2O3 as an anode electrode material for lithium-ion batteries (LIBs) has been widely reported. By using a microwave-assisted-template method, the Fe-based metal–organic framework (Fe-MIL-88A) material with a spindle-like morphology was prepared by a microwave-assisted method. Via the one-step pyrolysis of Fe-MIL-88A-MW (microwave-assisted synthesis) in air, uniform Fe2O3-MW-4h nanoparticles with a multicavity structure were obtained. The influence of microwave holding time on the formation of internal cavity in Fe-MIL-88A-MW-derived Fe2O3 nanoparticles was investigated. The resulting Fe2O3-MW-4h nanoparticles exhibit the unique advantages of nanomaterials, with a high surface area and large pore volume. These features facilitate the movement of the electrolyte and reduce the resistance of the material. Most importantly, the multicavity structure of Fe2O3-MW-4h nanoparticles could reduce the volume change during the Li+ insertion and extraction process. When materials were used as anode materials for LIBs, the Fe2O3-MW-4h nanoparticles exhibit excellent electrochemical performance. Therefore, the microwave-assisted-template method is promising in manufacturing metal oxides with multicavity structures for the next generation of LIB anode electrode materials.
中文翻译：
多孔Fe2O3纳米颗粒作为锂离子电池负极材料
目前，由于与其他材料相比具有更高的理论容量，Fe 2 O 3作为锂离子电池（LIBs）负极材料的研究已被广泛报道。采用微波辅助模板法，通过微波辅助方法制备了具有纺锤形形态的铁基金属有机骨架（Fe-MIL-88A）材料。通过在空气中一步热解 Fe-MIL-88A-MW（微波辅助合成），获得了具有多腔结构的均匀 Fe 2 O 3 -MW-4h 纳米粒子。研究了微波保持时间对Fe-MIL-88A-MW衍生的Fe 2 O 3纳米粒子内腔形成的影响。由此产生的铁2 O 3 -MW-4h纳米粒子展现了纳米材料的独特优势，具有高表面积和大孔体积。这些特征有利于电解质的移动并降低材料的电阻。最重要的是，Fe 2 O 3 -MW-4h 纳米粒子的多腔结构可以减少 Li +插入和提取过程中的体积变化。当材料用作 LIBs 的负极材料时，Fe 2 O 3-MW-4h 纳米粒子表现出优异的电化学性能。因此，微波辅助模板法在制备用于下一代锂离子电池负极材料的多腔结构金属氧化物方面很有前景。
更新日期：2021-09-24
中文翻译：
多孔Fe2O3纳米颗粒作为锂离子电池负极材料
目前，由于与其他材料相比具有更高的理论容量，Fe 2 O 3作为锂离子电池（LIBs）负极材料的研究已被广泛报道。采用微波辅助模板法，通过微波辅助方法制备了具有纺锤形形态的铁基金属有机骨架（Fe-MIL-88A）材料。通过在空气中一步热解 Fe-MIL-88A-MW（微波辅助合成），获得了具有多腔结构的均匀 Fe 2 O 3 -MW-4h 纳米粒子。研究了微波保持时间对Fe-MIL-88A-MW衍生的Fe 2 O 3纳米粒子内腔形成的影响。由此产生的铁2 O 3 -MW-4h纳米粒子展现了纳米材料的独特优势，具有高表面积和大孔体积。这些特征有利于电解质的移动并降低材料的电阻。最重要的是，Fe 2 O 3 -MW-4h 纳米粒子的多腔结构可以减少 Li +插入和提取过程中的体积变化。当材料用作 LIBs 的负极材料时，Fe 2 O 3-MW-4h 纳米粒子表现出优异的电化学性能。因此，微波辅助模板法在制备用于下一代锂离子电池负极材料的多腔结构金属氧化物方面很有前景。
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