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首页> 外文期刊>ACS applied materials & interfaces >Elucidating the Intercalation Pseudocapacitance Mechanism of MoS2-Carbon Monolayer Interoverlapped Superstructure: Toward High-Performance Sodium-Ion-Based Hybrid Supercapacitor
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Elucidating the Intercalation Pseudocapacitance Mechanism of MoS2-Carbon Monolayer Interoverlapped Superstructure: Toward High-Performance Sodium-Ion-Based Hybrid Supercapacitor

机译：阐明MOS2-碳单层室内未装的嵌入伪孔径机理：朝向高性能钠离子的杂交超级电容器

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摘要

Two-dimensional (2D) layered materials have shown great promise for electrochemical energy storage applications. However, they are usually limited by the sluggish kinetics and poor cycling stability. Interface modification on 2D layered materials provides an effective way for increasing the active sites, improving the electronic conductivity, and enhancing the structure stability so that it can potentially solve the major issues on fabricating energy'storage devices with high performance. Herein, we synthesize a novel MoS2-catbon (MoS2-c) monolayet interoverlapped superstructure via a facile interface-modification route. This interlayer overlapped structure is demonstrated to have a wide sodiunriion intercalation/deintercalation voltage range of 0.4-3:0 V and the typical pseudocapacitive characteristics in fast kinetics, high reversibility, and robust structural Stability, thus displaying a large reversible capacity, a high rate capability, and an improved cyclability. A full, cell of sodium-ion hybrid supercapacitor based on this MoS2-C hybrid architecture can operate up to 3.8 V and deliver a high energy density of 111.4 Wh kg(-1) and a high power density exceeding 12 000 W kg(-1). Furthermore, a long cycle life of 10 000 cycles with over 77.3% of capacitance retention can be achieved.
机译：二维（2D）层状材料对电化学能量存储应用表示了很好的承诺。然而，它们通常受到缓慢的动力学和循环稳定性差的限制。 2D层叠材料的接口修改提供了增加活性网站，提高电子电导率的有效方法，提高了结构稳定性，以便它可能解决具有高性能的能量的能量的能量的主要问题。在此，我们通过容易接口改性途径合成新型MOS2-CATBON（MOS2-C）单粘土室内组内部结构。该中间层重叠的结构被证明是具有0.4-3：0V的宽SODIUNION嵌入/脱嵌电压范围，以及快速动力学，高可逆性和稳健的结构稳定性的典型假电容特性，从而显示出大的可逆容量，高速率能力和改善的可行性。基于该MOS2-C混合架构的钠离子混合超级电容器的完整细胞可以操作高达3.8V，并提供111.4WH kg（-1）的高能密度，高功率密度超过12 000W kg（ - 1）。此外，可以实现长期循环的长循环寿命，具有超过77.3％的电容保持率。

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  • 来源
    《ACS applied materials & interfaces》 |2017年第38期|共11页
  • 作者

    Wang Rutao; Wang Shijie; Peng Xiang; Zhang Yabin; Jin Dongdong; Chu Paul K.; Zhang Li;

  • 作者单位

    Chinese Univ Hong Kong Dept Mech &

    Automat Engn Shatin Hong Kong 999077 Peoples R China;

    Chinese Univ Hong Kong Dept Mech &

    Automat Engn Shatin Hong Kong 999077 Peoples R China;

    City Univ Hong Kong Dept Phys &

    Mat Sci Tat Chee Ave Kowloon 999077 Hong Kong Peoples R China;

    Chinese Univ Hong Kong Dept Mech &

    Automat Engn Shatin Hong Kong 999077 Peoples R China;

    Chinese Univ Hong Kong Dept Mech &

    Automat Engn Shatin Hong Kong 999077 Peoples R China;

    City Univ Hong Kong Dept Phys &

    Mat Sci Tat Chee Ave Kowloon 999077 Hong Kong Peoples R China;

    Chinese Univ Hong Kong Dept Mech &

    Automat Engn Shatin Hong Kong 999077 Peoples R China;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学工业;
  • 关键词

    MoS2; nanocomposite; intercalation pseudocapacitance; sodium-ion storage; supercapacitor;

    机译：MOS2;纳米复合材料;嵌入假偶联;钠离子储存;超级电容器;

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