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首页> 外文期刊>Advanced energy materials >Design and Performance of Rechargeable Sodium Ion Batteries, and Symmetrical Li-Ion Batteries with Supercapacitor-Like Power Density Based upon Polyoxovanadates
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Design and Performance of Rechargeable Sodium Ion Batteries, and Symmetrical Li-Ion Batteries with Supercapacitor-Like Power Density Based upon Polyoxovanadates

机译：基于聚氧钒酸盐的具有超级电容器样功率密度的可充电钠离子电池和对称锂离子电池的设计和性能

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摘要

The polyanion Li7V15O36(CO3) is a nanosized molecular cluster (approximate to 1 nm in size), that has the potential to form an open host framework with a higher surface-to-bulk ratio than conventional transition metal oxide electrode materials. Herein, practical rechargeable Na-ion batteries and symmetric Li-ion batteries are demonstrated based on the polyoxovanadate Li7V15O36(CO3). The vanadium centers in {V15O36(CO3)} do not all have the same V-IV/V redox potentials, which permits symmetric devices to be created from this material that exhibit battery-like energy density and supercapacitor-like power density. An ultrahigh specific power of 51.5 kW kg(-1) at 100 A g(-1) and a specific energy of 125 W h kg(-1) can be achieved, along with a long cycling life (>500 cycles). Moreover, electrochemical and theoretical studies reveal that {V15O36(CO3)} also allows the transport of large cations, like Na+, and that it can serve as the cathode material for rechargeable Na-ion batteries with a high specific capacity of 240 mA h g(-1) and a specific energy of 390 W h kg(-1) for the full Na-ion battery. Finally, the polyoxometalate material from these electrochemical energy storage devices can be easily extracted from spent electrodes by simple treatment with water, providing a potential route to recycling of the redox active material.
机译：聚阴离子Li7V15O36（CO3）是一种纳米级分子簇（大小约为1 nm），与传统的过渡金属氧化物电极材料相比，具有形成更高主体与本体比的开放主体构架的潜力。本文中，基于聚氧钒酸盐Li7V15O36（CO3）展示了实用的可再充电Na离子电池和对称锂离子电池。 {V15O36（CO3）}中的钒中心并不都具有相同的V-IV / V氧化还原电势，这使得可以用这种材料制造出具有类似于电池的能量密度和类似于超级电容器的功率密度的对称器件。在100 A g（-1）下具有51.5 kW kg（-1）的超高比功率和125 W h kg（-1）的比能，并具有较长的循环寿命（> 500个循环）。此外，电化学和理论研究表明，{V15O36（CO3）}还可以传输较大的阳离子，例如Na +，并且它可以用作可充电Na离子电池的正极材料，其比容量为240 mA hg（ -1）和完整Na离子电池的390 W h kg（-1）的比能。最后，通过简单的水处理，可以很容易地从废电极中提取出来自这些电化学能量存储装置的多金属氧酸盐材料，从而提供了循环利用氧化还原活性材料的潜在途径。

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  • 来源
    《Advanced energy materials》 |2018年第6期|1701021.1-1701021.6|共6页
  • 作者

    Chen Jia-Jia; Ye Jian-Chuan; Zhang Xia-Guang; Symes Mark D.; Fan Shao-Cong; Long De-Liang; Zheng Ming-Sen; Wu De-Yin; Cronin Leroy; Dong Quan-Feng;

  • 作者单位

    Xiamen Univ, iChem Collaborat Innovat Ctr Chem Energy Mat, Coll Chem & Chem Engn, State Key Lab Phys Chem Solid Surfaces,Dept Chem, Xiamen 361005, Fujian, Peoples R China|Univ Glasgow, Sch Chem, WestCHEM, Univ Ave, Glasgow G12 8QQ, Lanark, Scotland;

    Xiamen Univ, iChem Collaborat Innovat Ctr Chem Energy Mat, Coll Chem & Chem Engn, State Key Lab Phys Chem Solid Surfaces,Dept Chem, Xiamen 361005, Fujian, Peoples R China;

    Xiamen Univ, iChem Collaborat Innovat Ctr Chem Energy Mat, Coll Chem & Chem Engn, State Key Lab Phys Chem Solid Surfaces,Dept Chem, Xiamen 361005, Fujian, Peoples R China;

    Univ Glasgow, Sch Chem, WestCHEM, Univ Ave, Glasgow G12 8QQ, Lanark, Scotland;

    Xiamen Univ, iChem Collaborat Innovat Ctr Chem Energy Mat, Coll Chem & Chem Engn, State Key Lab Phys Chem Solid Surfaces,Dept Chem, Xiamen 361005, Fujian, Peoples R China;

    Univ Glasgow, Sch Chem, WestCHEM, Univ Ave, Glasgow G12 8QQ, Lanark, Scotland;

    Xiamen Univ, iChem Collaborat Innovat Ctr Chem Energy Mat, Coll Chem & Chem Engn, State Key Lab Phys Chem Solid Surfaces,Dept Chem, Xiamen 361005, Fujian, Peoples R China;

    Xiamen Univ, iChem Collaborat Innovat Ctr Chem Energy Mat, Coll Chem & Chem Engn, State Key Lab Phys Chem Solid Surfaces,Dept Chem, Xiamen 361005, Fujian, Peoples R China;

    Xiamen Univ, iChem Collaborat Innovat Ctr Chem Energy Mat, Coll Chem & Chem Engn, State Key Lab Phys Chem Solid Surfaces,Dept Chem, Xiamen 361005, Fujian, Peoples R China|Univ Glasgow, Sch Chem, WestCHEM, Univ Ave, Glasgow G12 8QQ, Lanark, Scotland;

    Xiamen Univ, iChem Collaborat Innovat Ctr Chem Energy Mat, Coll Chem & Chem Engn, State Key Lab Phys Chem Solid Surfaces,Dept Chem, Xiamen 361005, Fujian, Peoples R China;

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  • 正文语种 eng
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  • 关键词

    Li-ion supercapacitors; ion mobility; cathode materials; Na-ion batteries; polyoxometalates;

    机译：锂离子超级电容器离子迁移率阴极材料钠离子电池多金属氧酸盐;

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