A facile solution combustion synthesis of nanosized amorphous iron oxide incorporated in a carbon matrix for use as a high-performance lithium ion battery anode material
A facile solution combustion synthesis of nanosized amorphous iron oxide incorporated in a carbon matrix for use as a high-performance lithium ion battery anode material
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DOI：
10.1016/j.jallcom.2015.02.043
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发表时间：
2015-06
影响因子：
6.2
通讯作者：
Chunyu Zhu;G. Saito;T. Akiyama
中科院分区：
文献类型：
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作者：
Chunyu Zhu;G. Saito;T. Akiyama
通过采用溶液燃烧合成的有效、廉价且可扩展的方法制备了无定形铁氧化物-碳复合材料。合成了直径约5纳米的无定形氧化铁纳米颗粒，并均匀嵌入致密的碳基体中。合成的复合材料具有增强的循环性能和倍率性能，在0.5 A g-1的电流速率下，200次放电/充电循环后，显示出687 mA h g-1的高可逆容量，而Fe 2 O3纳米颗粒的可逆容量为400 mA h g-1。即使在更苛刻的条件下，这种增强的性能也得以保持，即使在1 A g−1下循环400次后，仍能提供约525 mA h g− 1的高容量和近乎完美的库仑效率。该复合材料的制备简单和上级电化学性能表明，它是一种有前途的用作高性能锂离子电池负极材料的材料。
An amorphous iron oxide–carbon composite has been fabricated through an effective, inexpensive, and scalable method employing solution combustion synthesis. Amorphous iron oxide nanoparticles with diameters of about 5 nm were synthesized and uniformly embedded in a dense carbon matrix. The synthesized composite exhibits enhanced cyclability and rate capability, showing a high reversible capacity of 687 mA h g−1after 200 discharge/charge cycles at a current rate of 0.5 A g−1, compared to the 400 mA h g−1observed for Fe2O3nanoparticles. This enhanced performance was retained despite more demanding conditions, delivering a high capacity of about 525 mA h g−1and a nearly perfect coulombic efficiency even after 400 cycles at 1 A g−1. The easy production and superior electrochemical properties of this composite suggest that it is a promising material for use as an anode material in high performance lithium ion batteries.