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首页> 外文期刊>Advanced energy materials >Densification by Compaction as an Effective Low-Cost Method to Attain a High Areal Lithium Storage Capacity in a CNT@Co_3O_4 Sponge
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Densification by Compaction as an Effective Low-Cost Method to Attain a High Areal Lithium Storage Capacity in a CNT@Co_3O_4 Sponge

机译：通过压实致密化作为一种​​有效的低成本方法，以在CNT @ Co_3O_4海绵中实现高的锂存储容量

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摘要

Achieving a high areal capacity is essential for the transfer of outstanding laboratory electrode results to commercial applications and also to ensure there exists a capacity matched cathode and anode for a properly tuned battery. Despite intensive efforts, most electrode materials exhibit areal capacities lower than that of the graphite anodes (4 mA h cm(-2)). An effective and low-cost approach is reported to attain a high areal capacity via an intense densification by compacting a porous carbon nanotube sponge grafted with Co3O4 nanoparticles. The hybrid sponge can be compacted to a large degree (up to a tenfold densification) while still keeping its structural integrity and the 3D porous network. This method allows achieving a mass loading of up -to 14.3 mg cm(-2) and an areal capacity of 12 mA h cm(-2) (at a current density of 200 mA g(-1)) together with a gravimetric capacity of 800 mA h g(-1). This densification by compaction approach offers an effective and low-cost strategy to develop high mass loading and areal capacity electrodes for practical energy storage systems.
机译：实现出色的面容量对于将出色的实验室电极结果转移到商业应用中至关重要，同时也要确保正极和负极的容量匹配，以正确调整电池。尽管付出了巨大的努力，但大多数电极材料的面积容量仍低于石墨阳极的面积容量（4 mA h cm（-2））。据报道，一种有效且低成本的方法是通过紧密致密化，通过压实接枝有Co3O4纳米颗粒的多孔碳纳米管海绵来实现高密度化。混合海绵可以在很大程度上保持紧密度（致密化高达十倍），同时仍保持其结构完整性和3D多孔网络。这种方法可以实现高达14.3 mg cm（-2）的质量负载和12 mA h cm（-2）的面积容量（在200 mA g（-1）的电流密度下）以及重量分析容量大于800 mA hg（-1）。通过压实方法的这种致密化提供了一种有效且低成本的策略，以开发用于实际能量存储系统的高质量负载和平面容量电极。

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  • 来源
    《Advanced energy materials》 |2018年第19期|1702981.1-1702981.10|共10页
  • 作者

    Chen Yijun; Wang Yunsong; Wang Zhipeng; Zou Mingchu; Zhang Hui; Zhao Wenqi; Yousaf Muhammad; Yang Liusi; Cao Anyuan; Han Ray P. S.;

  • 作者单位

    Peking Univ, Dept Mat Sci & Engn, Coll Engn, Beijing 100871, Peoples R China;

    Peking Univ, Dept Mat Sci & Engn, Coll Engn, Beijing 100871, Peoples R China;

    Peking Univ, Dept Mat Sci & Engn, Coll Engn, Beijing 100871, Peoples R China;

    Peking Univ, Dept Mat Sci & Engn, Coll Engn, Beijing 100871, Peoples R China;

    Peking Univ, Dept Mat Sci & Engn, Coll Engn, Beijing 100871, Peoples R China;

    Peking Univ, Dept Mat Sci & Engn, Coll Engn, Beijing 100871, Peoples R China;

    Peking Univ, Dept Mat Sci & Engn, Coll Engn, Beijing 100871, Peoples R China;

    Peking Univ, Dept Mat Sci & Engn, Coll Engn, Beijing 100871, Peoples R China;

    Peking Univ, Dept Mat Sci & Engn, Coll Engn, Beijing 100871, Peoples R China;

    Peking Univ, Dept Mat Sci & Engn, Coll Engn, Beijing 100871, Peoples R China;

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  • 正文语种 eng
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  • 关键词

    areal capacity; areal mass loading; carbon nanotube sponges; Co3O4; lithium ion batteries;

    机译：面积容量;面积质量负荷;碳纳米管海绵;Co3O4;锂离子电池;

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