High-performance tin-oxide supercapacitors using hydrazine functionalising assisted by hydrogen plasma treatment

Micro & nano letters

article

Hassan Abdollahi¹  Mahmoud Samkan¹  Mohammad Ala Mohajerzadeh²  Zeinab Sanaee²  Shams Mohajerzadeh² 

[1] Department of Electrical Engineering, Shahid Sattari Aeronautical University of Science and Technology;Thin Film and Nanoelectronic Lab, School of Electrical and Computer Engineering, University of Tehran;Nano-fabricated Energy Devices Lab, School of Electrical and Computer Engineering, University of Tehran

关键词: X-ray diffraction;    capacitance;    electrochemical electrodes;    supercapacitors;    plasma materials processing;    sol-gel processing;    tin compounds;    Raman spectra;    transmission electron microscopy;    voltammetry (chemical analysis);    field emission scanning electron microscopy;    Fourier transform infrared spectra;    SnO2;    high-performance tin-oxide supercapacitors;    hydrazine functionalising;    hydrogen plasma treatment;    hydrazine solution;    mixed solution;    pure tin-oxide sol–gel;    electrochemical tests;    tin-oxide material;    sol–gel processing;    cyclic-voltammetry;    charge-discharge characteristics;    FESEM;    XRD;    TEM;    FT-IR spectroscopy;    Raman spectroscopy;   

DOI  :  10.1049/mnl.2019.0214

学科分类：计算机科学（综合）

来源: Wiley

【 摘 要 】

For the first time, the effects of adding hydrazine solution to tin-oxide sol–gel to be used as an electrode in high-performance supercapacitors have been studied. The mixed solution has been spin-coated on stainless steel foils as substrates followed by exposing to hydrogen plasma treatment. The results show the effectiveness of adding hydrazine to tin-oxide sol–gel, compared to pure tin-oxide sol–gel. The electrochemical tests such as cyclic-voltammetry and charge–discharge characteristics have been conducted, and the findings demonstrate the favourable contribution of adding hydrazine in increasing the capacitance of the supercapacitor. The physical properties of the tin-oxide material have been analysed by means of FESEM, XRD, TEM, FT-IR spectroscopy and Raman spectroscopy to have a better understanding of preparation procedure and better insight in material synthesis. The electrochemical tests demonstrate a high capacitance of 18 mF/cm 2 for the sample treated with hydrazine during the sol–gel processing which is around 40% higher than the merely prepared tin-oxide sample. The measured values for the capacitance versus rate show a rather linear correlation between these parameters, further corroborating an electric-double layer-based performance for such devices.

【 授权许可】

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