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首页> 外文期刊>Advanced Functional Materials >Manipulation of Disodium Rhodizonate: Factors for Fast-Charge and Fast-Discharge Sodium-Ion Batteries with Long-Term Cyclability
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Manipulation of Disodium Rhodizonate: Factors for Fast-Charge and Fast-Discharge Sodium-Ion Batteries with Long-Term Cyclability

机译：Rhodizonate二钠的操纵：具有长期可循环性的快速充电和快速放电钠离子电池的因素

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摘要

Organic sodium-ion batteries (SIBs) are one of the most promising alternatives of current commercial inorganic lithium-ion batteries (LIBs) especially in the foreseeable large-scale flexible and wearable electronics. However, only a few reports are involving organic SIBs so far. To achieve fast-charge and fast-discharge performance and the long-term cycling suitable for practical applications, is still challenging. Here, important factors for high performance SIBs especially with high capacity and long-term cyclability under fast-charge and fast-discharge process are investigated. It is found that controlling the solubility through molecular design and determination of the electrochemical window is essential to eliminate dissolution of the electrode material, resulting in improved cyclability. The results show that poly(vinylidenedifluoride) will decompose during the charge/discharge process, indicating the significance of the binder for achieving high cyclability. Beside of these, it is also shown that decent charge transport and ionic diffusion are beneficial to the fast-charge and fast-discharge batteries. For instance, the flake morphology facilitates the ionic diffusion and thereby can lead to a capacitive effect that is favorable to fast charge and fast discharge.
机译：有机钠离子电池（SIB）是当前商用无机锂离子电池（LIB）的最有希望的替代品之一，尤其是在可预见的大规模柔性和可穿戴电子产品中。但是，到目前为止，只有少数报告涉及有机SIB。为了实现快速充电和快速放电性能以及适合实际应用的长期循环，仍然是挑战。在这里，研究了高性能SIB的重要因素，尤其是在快速充电和快速放电过程中具有高容量和长期可循环性的情况。已经发现，通过分子设计和确定电化学窗口来控制溶解度对于消除电极材料的溶解是必要的，从而改善了可循环性。结果表明，聚（偏二氟乙烯）将在充电/放电过程中分解，表明粘合剂对于实现高循环性具有重要意义。除此之外，还显示出体面的电荷传输和离子扩散对快速充电和快速放电电池有利。例如，薄片形态有利于离子扩散，从而可以导致有利于快速充电和快速放电的电容效应。

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  • 来源
    《Advanced Functional Materials》 |2016年第11期|1777-1786|共10页
  • 作者

    Wang Chengliang; Fang Yaoguo; Xu Yang; Liang Liying; Zhou Min; Zhao Huaping; Lei Yong;

  • 作者单位

    Tech Univ Ilmenau, Inst Phys, D-98693 Ilmenau, Germany|Tech Univ Ilmenau, IMN MacroNano, D-98693 Ilmenau, Germany;

    Tech Univ Ilmenau, Inst Phys, D-98693 Ilmenau, Germany|Tech Univ Ilmenau, IMN MacroNano, D-98693 Ilmenau, Germany;

    Tech Univ Ilmenau, Inst Phys, D-98693 Ilmenau, Germany|Tech Univ Ilmenau, IMN MacroNano, D-98693 Ilmenau, Germany;

    Tech Univ Ilmenau, Inst Phys, D-98693 Ilmenau, Germany|Tech Univ Ilmenau, IMN MacroNano, D-98693 Ilmenau, Germany;

    Tech Univ Ilmenau, Inst Phys, D-98693 Ilmenau, Germany|Tech Univ Ilmenau, IMN MacroNano, D-98693 Ilmenau, Germany;

    Tech Univ Ilmenau, Inst Phys, D-98693 Ilmenau, Germany|Tech Univ Ilmenau, IMN MacroNano, D-98693 Ilmenau, Germany;

    Tech Univ Ilmenau, Inst Phys, D-98693 Ilmenau, Germany|Tech Univ Ilmenau, IMN MacroNano, D-98693 Ilmenau, Germany|Shanghai Univ, Sch Environm & Chem Engn, Inst Nanochem & Nanobiol, Shanghai 200444, Peoples R China;

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