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首页> 外文期刊>Journal of Physics, D. Applied Physics: A Europhysics Journal >High performance sodium-ion full battery based on one-dimensional nanostructures: the case of Na(0.44)MnO(2)cathode and MoS(2)anode
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High performance sodium-ion full battery based on one-dimensional nanostructures: the case of Na(0.44)MnO(2)cathode and MoS(2)anode

机译:高性能钠离子全电池基于一维纳米结构:Na(0.44)MnO(2)阴极和MOS(2)阳极的情况

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摘要

Transition metal oxides have been considered as one of the most promising cathode candidates for sodium ion batteries (SIBs). Tunnel type Na0.44MnO2, a typical cathode material for sodium ion battery, shows hopeful potential for future practical SIBs as large-scale electric energy storage system due to the low-cost and environment-friendly virtues. However, poor cyclability and rate performance of Na(0.44)MnO(2)ascribed to the slow kinetic and structural degradation have limited its practical application. Herein, single crystalline hinged nanorod shaped Na0.44MnO2(NMO-HNR) is designed by simple solid reaction. By testing the electrochemical performances of NMO-HNR samples which are synthesized at different annealing temperatures, the effects of grain size and crystallinity on electrochemical properties are investigated in detail. Thanks to the robust structure of hinged nanorod which is identified by structural and morphological characteristics after deep cycling, all the samples exhibit outstanding cyclability. Especially, the optimized NMO-HNR-900 material could deliver prominent capacity retention of 93.6% after cycling 1800 cycles at 2 A g(-1). More importantly, the full battery performance based on Na(0.44)MnO(2)cathode and MoS(2)anode is first reported in this work. As a consequence, NMO-HNR-900//Co9S8@MoS2HNT full-cell can deliver a decent cycling property with a capacity retention of 72.1% after 80 cycles.
机译:过渡金属氧化物被认为是钠离子电池(SIB)最有前途的候选阴极之一。隧道型Na0。44MnO2是一种典型的钠离子电池正极材料,具有成本低、环境友好等优点,有望成为未来实用的大规模电能存储系统。然而,由于Na(0.44)MnO(2)的缓慢动力学和结构降解,其循环性和速率性能较差,限制了其实际应用。在这里,单晶铰链纳米棒形状的Na0。44MnO2(NMO-HNR)是通过简单的固体反应设计的。通过测试在不同退火温度下合成的NMO-HNR样品的电化学性能,详细研究了晶粒尺寸和结晶度对电化学性能的影响。由于铰链纳米棒结构坚固,经过深循环后的结构和形态特征可以确定,所有样品都表现出优异的循环性能。特别是,优化后的NMO-HNR-900材料在2 A g(-1)下循环1800次后,可提供93.6%的显著容量保持率。更重要的是,本文首次报道了基于Na(0.44)MnO(2)阴极和MoS(2)阳极的全电池性能。因此,NMO-HNR-900//Co9S8@MoS2HNT全电池可提供良好的循环性能,80次循环后容量保持率为72.1%。

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  • 作者单位

    Univ Sci &

    Technol China Hefei Natl Lab Phys Sci Microscale CAS Key Lab Mat Energy Convers Dept Mat Sci &

    Engn Hefei 230026 Anhui Peoples R China;

    Univ Sci &

    Technol China Hefei Natl Lab Phys Sci Microscale CAS Key Lab Mat Energy Convers Dept Mat Sci &

    Engn Hefei 230026 Anhui Peoples R China;

    Univ Sci &

    Technol China Dept Chem Hefei 230026 Anhui Peoples R China;

    Univ Sci &

    Technol China Hefei Natl Lab Phys Sci Microscale CAS Key Lab Mat Energy Convers Dept Mat Sci &

    Engn Hefei 230026 Anhui Peoples R China;

    Univ Sci &

    Technol China Hefei Natl Lab Phys Sci Microscale CAS Key Lab Mat Energy Convers Dept Mat Sci &

    Engn Hefei 230026 Anhui Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 应用物理学;
  • 关键词

    sodium ion battery; tunnel Na0.44MnO2; one-dimension; cathode; anode;

    机译:钠离子电池;隧道Na0.44mNO2;一维;阴极;阳极;

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