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Nickel(Ⅱ) tetra-aminophthalocyanine modified MWCNTs as potential nanocomposite materials for the development of supercapacitors

机译:镍(Ⅱ)四氨基酞菁修饰的多壁碳纳米管可作为开发超级电容器的潜在纳米复合材料

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摘要

The supercapacitive properties of nickel(n) tetraaminophthalocyanine (NiTAPc)/multi-walled carbon nanotube (MWCNT) nanocomposite films have been interrogated for the first time and found to possess a maximum specific capacitance of 981 ± 57 F g~(-1) (200 ± 12 mF cm~(-2)), a maximum power density of 700 ± 1 Wkg~(-1), a maximum specific energy of 134 ± 8 Wh kg~(-1) and excellent stability of over 1500 charge-discharge continuous cycling. Impedimetric study proves that most of the stored energy of the MWCNT-NiTAPc nanocomposite can be accessible at high frequency (720 Hz). When compared to MWCNTs modified with unsubstituted nickel(Ⅱ) phthalocyanine (MWCNT-NiPc) or nickel(n) tetra-tert-butyphthalocyanine (MWCNT-tBuNiPc), MWCNT-NiTAPc exhibited superior supercapacitive behaviour, possibly due to the influence of nitrogen-containing groups on the phthalocyanine rings.
机译:镍(n)四氨基酞菁(NiTAPc)/多壁碳纳米管(MWCNT)纳米复合薄膜的超电容特性首次被研究,其最大比电容为981±57 F g〜(-1)( 200±12 mF cm〜(-2)),最大功率密度700±1 Wkg〜(-1),最大比能量134±8 Wh kg〜(-1)和超过1500个电荷的出色稳定性-放电连续循环。阻抗研究证明,MWCNT-NiTAPc纳米复合材料的大部分存储能量都可以在高频(720 Hz)下获得。与用未取代的镍酞菁镍(MWCNT-NiPc)或四叔丁基酞菁镍(n)修饰的MWCNT相比,MWCNT-NiTAPc具有更好的超电容性能,这可能是由于含氮的影响酞菁环上的基团。

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  • 来源
    《Energy & environmental science》 |2010年第2期|228-236|共9页
  • 作者单位

    Department of Chemistry, University of Pretoria, Pretoria, 0002, South Africa;

    rnDepartment of Chemistry, University of Pretoria, Pretoria, 0002, South Africa Energy and Processes Unit, Materials Science and Manufacturing, Council for Scientific and Industrial Research (CSIR), Pretoria, 0001, South Africa;

    rnEnergy and Processes Unit, Materials Science and Manufacturing, Council for Scientific and Industrial Research (CSIR), Pretoria, 0001, South Africa;

    rnCarbon Technology Unit, National Physical Laboratory, New Delhi, 110012, India;

    rnPhysical and Theoretical Chemistry Laboratory, University of Oxford, South Parks Road, Oxford, UK;

    Physical and Theoretical Chemistry Laboratory, University of Oxford, South Parks Road, Oxford, UK School of Chemistry, University of East Anglia, Norwich, UK;

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