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首页> 外文期刊>RSC Advances >Controllable growth of NiCo2O4 nanoarrays on carbon fiber cloth and its anodic performance for lithium-ion batteries
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Controllable growth of NiCo2O4 nanoarrays on carbon fiber cloth and its anodic performance for lithium-ion batteries

机译：锂离子电池碳纤维布中NicO2O4纳米载体的可控增长及其阳极性能

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摘要

Flexible materials are promising materials for wearable devices and have attracted much attention. Among these, carbon fiber cloth (CFC) is a soft carbon substrate on which it is suitable to grow metal oxide nanoarrays. Meanwhile, a high areal mass loading of an electrode is of great significance in practice. Consequently, this work fabricated high areal mass loading NiCo2O4 nanoarrays by direct growth onto a CFC without binder and conductive additives. In the experiments, the thickness of the NiCo2O4 layer could be controlled to 1.8-4.4 mu m by varying the hydrothermal reaction time between 6-18 hours. Since a high areal mass loading of an electrode is of great significance in practice, the thickness of NiCo2O4 was controlled to 4.4 mu m using an 18 hour hydrothermal reaction time. The electrochemical behavior of the NiCo2O4/CFC anode was evaluated with 10 cycles at five different current rates from 100 to 500 mA g(-1) in sequence and another 100 cycles at 100 mA g(-1). It had a reversible areal capacity of 2.39 mA h cm(-2) (799 mA h g(-1)) at the 150th cycle when the current density was 0.299 mA cm(-2) (100 mA g(-1)). The high areal capacity was ascribed to the larger NiCo2O4 mass loading on the CFC substrate. The one-dimensional flexible conductive carbon fiber backbone and the free-standing NiCo2O4 nanoarrays on it also released the stress generated from the discharge/charge process. The nanostructure of NiCo2O4/CFC in this work offers great benefits for high areal capacity anode materials.
机译：柔性材料是可穿戴设备的有希望的材料，并引起了很多关注。其中，碳纤维布（CFC）是一种软碳基材，其适合于生长金属氧化物纳米阵列。同时，在实践中，电极的高面积质量负荷具有重要意义。因此，通过直接生长在没有粘合剂和导电添加剂的CFC上，这项工作制造了高面积质量荷载NicO2O4纳米阵列。在实验中，通过在6-18小时之间改变水热反应时间，可以将NicO 2 O 4层的厚度控制在1.8-4.4μm。由于在实践中高度的电极的质量负荷具有重要意义，因此使用18小时的水热反应时间将NicO 2 O 4的厚度控制在4.4μm。依次以100至500mA g（-1）的五种不同的电流速率评价NicO 2 O 4 / CFC阳极的电化学行为，并在100mA g（-1）下另外100次循环。它有2.39毫安高厘米（-2）（799毫安ħ克（-1））在第150循环的可逆容量面时电流密度为0.299毫安厘米（-2）（100毫安克（-1））。在CFC衬底上赋予较大的NicO 2 O 4质量负荷的高面积能。一维柔性导电碳纤维骨架和独立式NicO2O4纳米载体还释放出从放电/充电过程产生的应力。本工作中Nico2O4 / CFC的纳米结构为高面积能阳极材料提供了很大的益处。

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  • 来源
    《RSC Advances》 |2015年第126期|共8页
  • 作者

    Chen Shouhui; Wu Jiafeng; Zhou Rihui; Chen Yaqing; Song Yonghai; Wang Li;

  • 作者单位

    Jiangxi Normal Univ Coll Chem &

    Chem Engn Nanchang 330022 Peoples R China;

    Jiangxi Normal Univ Coll Chem &

    Chem Engn Nanchang 330022 Peoples R China;

    Jiangxi Normal Univ Coll Chem &

    Chem Engn Nanchang 330022 Peoples R China;

    Jiangxi Normal Univ Coll Chem &

    Chem Engn Nanchang 330022 Peoples R China;

    Jiangxi Normal Univ Coll Chem &

    Chem Engn Nanchang 330022 Peoples R China;

    Jiangxi Normal Univ Coll Chem &

    Chem Engn Nanchang 330022 Peoples R China;

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  • 正文语种 eng
  • 中图分类 化学;
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