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Electrochemical energy-storage performances of nickel oxide films prepared by a sparking method

机译:通过火花法制备的氧化镍膜的电化学能量储存性能

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摘要

In this work, nickel oxide (NiO) films have been prepared by a sparking method on flexible chromium/gold coated polyethylene terephthalate substrates and investigated for electrochemical energy-storage applications. Structural characterizations by scanning/transmission electron microscopies, X-ray diffraction, X-ray photoelectron spectroscopy and a UV-vis spectrophotometer reveal that the film comprises polycrstalline NiO nanoparticles with diameters in the range of 3.0-6.0 nm loosely agglomerated into a porous foam-like network. The nanoporous sparked NiO films, exhibit remarkable energy-storage behavior with a high average specific charge capacity of 402.75 C g(-1) at a discharge current of 1 A g(-1) and a good capacity retention of 88% after 1000 cycles at a high discharge current of 40 A g(-1). Thus, the sparking method is a promising alternative route for the preparation of high-performance electrochemical energy-storage devices.
机译:在这项工作中,通过在柔性铬/金涂覆的聚对苯二甲酸乙二醇酯基材上的火花方法制备氧化镍(NIO)膜并研究了电化学能量储存应用。 通过扫描/透射电子显微镜,X射线衍射,X射线光电子能谱和UV-Vis分光光度计的结构特征揭示了薄膜在3.0-6.0nm的范围内,薄膜包括直径的多晶NiO纳米颗粒松散地凝集到多孔泡沫中 - 像网络一样。 纳米孔引发的NiO膜,在1 a g(-1)的放电电流下,具有402.75cg(-1)的高平均电荷容量的显着能量储存行为,并且在1000次循环后良好的容量保留为88% 在40Ag(-1)的高放电电流。 因此,火花方法是用于制备高性能电化学能量存储装置的有希望的替代路线。

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  • 来源
    《RSC Advances》 |2015年第83期|共8页
  • 作者单位

    Chiang Mai Univ Deparment Phys &

    Mat Sci Fac Sci Chiang Mai 50200 Thailand;

    Maejo Univ Fac Sci Program Mat Sci Chiang Mai 50290 Thailand;

    Chiang Mai Univ Fac Sci Res Lab Analyt Instrument &

    Electrochem Innovat Chiang Mai 50200 Thailand;

    Natl Elect &

    Comp Technol Ctr NECTEC Nanoelect &

    MEMS Lab Klongluang 12120 Pathumthani Thailand;

    Natl Elect &

    Comp Technol Ctr NECTEC Nanoelect &

    MEMS Lab Klongluang 12120 Pathumthani Thailand;

    Chiang Mai Univ Fac Sci Res Lab Analyt Instrument &

    Electrochem Innovat Chiang Mai 50200 Thailand;

    Natl Elect &

    Comp Technol Ctr NECTEC Nanoelect &

    MEMS Lab Klongluang 12120 Pathumthani Thailand;

    Natl Elect &

    Comp Technol Ctr NECTEC Nanoelect &

    MEMS Lab Klongluang 12120 Pathumthani Thailand;

    Chiang Mai Univ Deparment Phys &

    Mat Sci Fac Sci Chiang Mai 50200 Thailand;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;
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