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首页> 外文期刊>Chemistry: A European journal >Polyoxometalates-Based Metal–Organic Frameworks Made by Electrodeposition and Carbonization Methods as Cathodes and Anodes for Asymmetric Supercapacitors
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Polyoxometalates-Based Metal–Organic Frameworks Made by Electrodeposition and Carbonization Methods as Cathodes and Anodes for Asymmetric Supercapacitors

机译：通过电沉积和碳化方法作为非对称超级电容器的阴极和阳极制成的基于多氧化物的金属 - 有机框架

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摘要

Hybrid materials have obtained well-deserved attention for energy storage devices, because they show high capacitances and high energy densities induced by the synergistic effect between complementary components. Polyoxometalate- based metal–organic frameworks (POMOFs) possess the abundant redox-active sites and ordered structures of polyoxometalates (POMs) and metal–organic frameworks (MOFs), respectively. Here, an asymmetric supercapacitor (ASC) NENU-5/PPy/60//FeMo/C was fabricated in which both its electrodes are prepared from POMOF precursors. A typical POMOF material, NENU-5, was first connected with polypyrrole (PPy) through electrodeposition to form the cathode material NENU-5/PPy. Another representative POMOFs material, PMo_(12)@MIL-100, was carbonized to obtain the anode material FeMo/C. Cathode NENU-5/PPy exhibited an extraordinary capacitance of 508.62 Fg~(-1) (areal capacitance: 2034.51 mFcm~(-2)). In addition, anode FeMo/C shows excellent cyclic stability attributed to its unique structure. Finally, benefiting from the outstanding capacitances and structural merits of the anode and cathode, assembled asymmetric supercapacitor NENU-5/PPy/60//FeMo/C achieves an energy density of 1.12 mWhcm~(-3) at a power density output of 27.78 mWcm~(-3), as well as a notable life of 10000 cycles with an capacity retention of 80.62 %. Thus, the unique ASC is strongly competitive in high capacitance, long cycle life, and high energy-required energy storage devices.
机译：混合材料已经获得了很好的关注能量存储装置，因为它们显示了通过互补成分之间的协同效应引起的高电容和高能量密度。基于多氧膦的金属 - 有机骨架（POMOFS）分别具有丰富的氧化还原活性位点和分别有序的多氧酸盐（POMS）和金属 - 有机框架（MOF）的结构。这里，制造了不对称超级电容器（ASC）Nenu-5 / PPY / 60 //幻线/ C，其中其两个电极由粉末前体制备。 Nenu-5典型的粉状材料，首先通过电沉积与聚吡咯（PPY）连接以形成Nenu-5 / PPY的阴极材料。另一种代表性的Pomofs材料，PMO_（12）@ MIL-100被碳化以获得阳极材料幻线/ C。阴极Nenu-5 / PPY表现出508.62 FG〜（-1）的非凡电容（面积电容：2034.51 mfcm〜（-2））。此外，阳极幻线/ C显示出归因于其独特结构的优异的循环稳定性。最后，受益于阳极和阴极的出色电容和结构优点，组装的不对称超级电容器Nenu-5 / PPY / 60 ////// Femo / C在功率密度输出为27.78的功率密度输出时实现1.12 MWHCM〜（-3）的能量密度MWCM〜（-3），以及10000周期的值得注意的寿命，容量保留为80.62％。因此，独特的ASC在高电容，长循环寿命和高能所需的能量存储装置中具有强烈竞争力。

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  • 来源
    《Chemistry: A European journal》 |2019年第72期|共8页
  • 作者

    Yao-Zhi Liu; Wei Yao; Hong-Mei Gan; Chun-Yi Sun; Zhong-Min Su; Xin-Long Wang;

  • 作者单位

    National &

    Local United Engineering Laboratory for Power Batteries Key Laboratory of Polyoxometalate Science of Ministry of Education Department of Chemistry Northeast Normal University Changchun Jilin 130024 (P.R. China);

    National &

    Local United Engineering Laboratory for Power Batteries Key Laboratory of Polyoxometalate Science of Ministry of Education Department of Chemistry Northeast Normal University Changchun Jilin 130024 (P.R. China);

    National &

    Local United Engineering Laboratory for Power Batteries Key Laboratory of Polyoxometalate Science of Ministry of Education Department of Chemistry Northeast Normal University Changchun Jilin 130024 (P.R. China);

    National &

    Local United Engineering Laboratory for Power Batteries Key Laboratory of Polyoxometalate Science of Ministry of Education Department of Chemistry Northeast Normal University Changchun Jilin 130024 (P.R. China);

    National &

    Local United Engineering Laboratory for Power Batteries Key Laboratory of Polyoxometalate Science of Ministry of Education Department of Chemistry Northeast Normal University Changchun Jilin 130024 (P.R. China);

    National &

    Local United Engineering Laboratory for Power Batteries Key Laboratory of Polyoxometalate Science of Ministry of Education Department of Chemistry Northeast Normal University Changchun Jilin 130024 (P.R. China);

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 应用化学;
  • 关键词

    asymmetric supercapacitors; electrodeposition; metal–organic frameworks; polyoxometalates; polypyrroles;

    机译：不对称超级电容器;电沉积;金属 - 有机框架;多氧化盐;息肉;

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