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首页> 外文期刊>ACS applied materials & interfaces >Morphologically Robust NiFe2O4 Nanofibers as High Capacity Li-Ion Battery Anode Material
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Morphologically Robust NiFe2O4 Nanofibers as High Capacity Li-Ion Battery Anode Material

机译:形态坚固的NiFe2O4纳米纤维作为高容量锂离子电池负极材料

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摘要

In this work, the electrochemical performance of NiFe2O4 nanofibers synthesized by an electrospinning approach have been discussed in detail. Lithium storage properties of nanofibers are evaluated and compared with NiFe2O4 nanoparticles by galvanostatic cycling and cyclic voltammetry studies, both in half-cell configurations. Nanofibers exhibit a higher charge-storage capacity of 1000 mAh g~(-1) even after 100 cycles with high Coulmbic efficiency of 100 % between 10 and 100 cycles. Ex situ microscopy studies confirmed that cycled nanofiber electrodes maintained the morphology and remained intact even after 100 charge-discharge cycles. The NiFe2O4 nanofiber electrode does not experience any structural stress and eventual pulverisation during lithium cycling and hence provides an efficient electron conducting pathway. The excellent electrochemical performance of NiFe2O4 nanofibers is due to the unique porous morphology of continuous nanofibers.
机译:在这项工作中,已经详细讨论了通过电纺丝方法合成的NiFe2O4纳米纤维的电化学性能。在半电池配置中,通过恒电流循环和循环伏安法研究,评估了纳米纤维的锂存储性能,并将其与NiFe2O4纳米颗粒进行了比较。纳米纤维即使在100次循环后仍显示出1000 mAh g〜(-1)的更高电荷存储容量,在10至100次循环之间的库仑效率高达100%。异位显微镜研究证实,即使经过100次充放电循环,循环的纳米纤维电极仍能保持形态并保持完整。 NiFe2O4纳米纤维电极在锂循环期间不会承受任何结构应力和最终的粉化,因此提供了有效的电子传导途径。 NiFe2O4纳米纤维的出色电化学性能归因于连续纳米纤维的独特多孔形态。

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