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Facile synthesis of NF/ZnOx and NF/CoOx nanostructures for high performance supercapacitor electrode materials

机译:高性能超级电极材料的NF / ZnOx和NF / Coox纳米结构的容貌合成

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摘要

NF/ZnOx nanocone and NF/CoOx nanoparticle electrode materials were fabricated on a nickel foam surface using a simple chemical bath deposition approach and assessed as an electrode material for high-performance supercapacitors (SCs). The electrochemical properties of the NF/ZnOx and NF/CoOx electrodes were examined by cyclic voltammetry, galvanostatic charge-discharge tests, and electrochemical impedance spectroscopy. The fabricated NF/ZnOx and NF/CoOx SCs devices exhibited a good specific capacitance of 2437 and 2142 F g(-1) at a current density of 20 mA g(-1), respectively, in a three electrode system. Furthermore, the NF/ZnOx and NF/CoOx electrode materials showed acceptable long cycle-life stability with 97.8% and 95.8% specific capacitance retention after 3000 cycles at a current density of 22 mA g(-1) in a 2 M aqueous KOH solution. Furthermore, the NF/ZnOx and NF/CoOx SCs showed a high energy density of 54.15 W h kg(-1) and 47.6 W h kg(-1) at a power density of 499.8 W kg(-1) and 571.2 W kg(-1), respectively, with maximum operating voltage of 0.5 V. Overall, NF/ZnOx and NF/CoOx electrode materials are promising electrodes for electrochemical energy storage applications.
机译:使用简单的化学浴沉积方法在镍泡沫表面上制造NF / ZnOX纳米核酮和NF / CoOX纳米颗粒电极材料,并评估为高性能超级电容器(SCS)的电极材料。通过循环伏安法,电镀电荷 - 放电试验和电化学阻抗光谱检查NF / ZnOX和NF / CoOX电极的电化学性质。制造的NF / ZnOx和NF / CoOX SCS器件在三个电极系统中分别在电流密度为20mA g(-1)的电流密度的良好特异性电容器上,其特定电容为2437和2142fg(-1)。此外,Nf / ZnOx和NF / CoOX电极材料显示出可接受的长循环 - 寿命稳定性,在2M水溶液中的电流密度为22mA g(-1)的电流密度后3000次循环后的97.8%和95.8%的特定电容保留。此外,Nf / ZnOx和NF / CoOX SCS在499.8Wkg(-1)和571.2W kg的功率密度下,高能量密度为54.15Wh kg(-1)和47.6Wh kg(-1)和571.2 kg (-1)分别具有0.5V的最大工作电压。总体而言,NF / ZnOx和NF / CoOX电极材料是用于电化学能量存储应用的有希望的电极。

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  • 来源
    《RSC Advances》 |2019年第37期|共8页
  • 作者单位

    Pusan Natl Univ Sch Elect Engn Busandaehak Ro 63beon Gil Busan 46241 South Korea;

    Pusan Natl Univ Sch Elect Engn Busandaehak Ro 63beon Gil Busan 46241 South Korea;

    Pusan Natl Univ Sch Elect Engn Busandaehak Ro 63beon Gil Busan 46241 South Korea;

    Pusan Natl Univ Sch Elect Engn Busandaehak Ro 63beon Gil Busan 46241 South Korea;

    Pusan Natl Univ Sch Elect Engn Busandaehak Ro 63beon Gil Busan 46241 South Korea;

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