Formation of NiFe(2)O(4)/Expanded Graphite Nanocomposites with Superior Lithium Storage Properties.

Formation of NiFe(2)O(4)/Expanded Graphite Nanocomposites with Superior Lithium Storage Properties.
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具有优异储锂性能的 NiFe2O4/膨胀石墨纳米复合材料的形成

DOI:
10.1007/s40820-017-0127-7
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发表时间:
2017
期刊:
影响因子:
26.6
通讯作者:
Qian X
Qian X
中科院分区:
材料科学1区
文献类型:
--
作者:
Xiao Y;Zai J;Tian B;Qian X

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采用一种简单、廉价的合成方法制备了NiFe 2 O 4/膨胀石墨纳米复合材料。研究了其储锂性能,目的是将其用作锂离子电池的阳极。所得纳米复合材料表现出良好的循环性能,在1 A g-1的电流下,800次循环后的容量为601 mAh g-1。这种良好的性能可以归因于EG的增强的导电性和层状结构。其高的机械强度可以推迟纳米复合结构的解体,有效地适应NiFe 2 O 4基阳极的体积变化,并减轻NiFe 2 O 4纳米颗粒的聚集。
AbstractA NiFe2O4/expanded graphite (NiFe2O4/EG) nanocomposite was prepared via a simple and inexpensive synthesis method. Its lithium storage properties were studied with the goal of applying it as an anode in a lithium-ion battery. The obtained nanocomposite exhibited a good cycle performance, with a capacity of 601 mAh g−1at a current of 1 A g−1after 800 cycles. This good performance may be attributed to the enhanced electrical conductivity and layered structure of the EG. Its high mechanical strength could postpone the disintegration of the nanocomposite structure, efficiently accommodate volume changes in the NiFe2O4-based anodes, and alleviate aggregation of NiFe2O4nanoparticles.
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