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首页> 外文期刊>RSC Advances >Spontaneously grown Ni(OH)(2) on iron oxide nanoparticles with enhanced energy storage performance for electrodes of asymmetric supercapacitors
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Spontaneously grown Ni(OH)(2) on iron oxide nanoparticles with enhanced energy storage performance for electrodes of asymmetric supercapacitors

机译：在氧化铁纳米颗粒上自发种植Ni（OH）（2），具有增强的不对称超级电容器的电极能量储存性能

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摘要

Iron oxide nanoparticles intercalated in Ni(OH)(2) nanosheets were prepared in a spontaneous way for the cathode materials of asymmetric supercapacitors. The soluble precursor of Ni(OH)(2), Ni(NH3)(6)(OH)(2), was used for growth on alpha-Fe2O3 nanoparticles. The loading percentages of Ni(OH)(2) in the Ni(OH)(2)-alpha-Fe2O3 nanocomposites had a great influence on the morphology and size of Ni(OH)(2). The composites were characterized by TEM, SEM, ICP-OES, XRD and XPS. The specific capacitance of Ni(OH)(2) in the composite can reach 1107 F g(-1) at a scan rate of 20 mV s(-1), and the specific capacitance of the Ni(OH)(2)-alpha-Fe2O3 composite can be up to 376 F g(-1) at a scan rate of 5 mV s(-1). More importantly, the fabricated Ni(OH)(2)-alpha-Fe2O3//AC (activated carbon) asymmetric supercapacitor exhibited energy density and power density of 31.6 W h Kg(-1) and 474 W Kg(-1), respectively. The cycling performance of the asymmetric supercapacitor was also excellent, and the capacitance retention reached 89.6% after 5000 charge-discharge cycles. Red, blue and yellow LED lights can be lit up with two series of asymmetric supercapacitors, revealing their potential application in energy storage.
机译：以Ni（OH）（2）（2）纳米晶片插入的氧化铁纳米粒子以自发的方式为不对称超级电容器的阴极材料制备。 Ni（OH）（2），Ni（NH 3）（6）（6）（2）的可溶性前体用于α-Fe 2 O 3纳米颗粒上的生长。 Ni（OH）（2） - FE2O3纳米复合材料中Ni（OH）（2）的加载百分比对Ni（OH）（2）的形态和尺寸产生了很大的影响。复合材料的特点是TEM，SEM，ICP-OES，XRD和XPS。复合材料中的Ni（OH）（2）的比电容可以以20mV S（-1）的扫描速率达到1107 f G（-1），以及Ni（OH）（2）的比电容 - Alpha-Fe2O3复合材料可在5 mV S（-1）的扫描速率上高达376 f g（-1）。更重要的是，制造的Ni（OH）（2） - α-Fe2O3 // AC（活性炭）不对称超级电容器分别表现出31.6Wh kg（-1）和474W kg（-1）的能量密度和功率密度。不对称超级电容器的循环性能也是优异的，并且在5000个充放电循环后电容保持率达到89.6％。红色，蓝色和黄色LED灯可以用两种系列的不对称超级电容器亮起，揭示他们在储能中的潜在应用。

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  • 来源
    《RSC Advances》 |2017年第79期|共9页
  • 作者

    Wang Yue; Zhang Xianfeng; Li Xin; Liu Yang; Wang Xiaoping; Liu Xi; Xu Jian; Li Yongwang; Liu Yongguang; Wei Hang; Jiang Peng; Liang Minghui;

  • 作者单位

    Natl Ctr Nanosci &

    Technol NCNST Key Lab Nanosyst &

    Hierarch Fabricat CAS Ctr Excellence Nanosci Beijing 100190 Peoples R China;

    Natl Ctr Nanosci &

    Technol NCNST Key Lab Nanosyst &

    Hierarch Fabricat CAS Ctr Excellence Nanosci Beijing 100190 Peoples R China;

    Natl Ctr Nanosci &

    Technol NCNST Key Lab Nanosyst &

    Hierarch Fabricat CAS Ctr Excellence Nanosci Beijing 100190 Peoples R China;

    Natl Ctr Nanosci &

    Technol NCNST Key Lab Nanosyst &

    Hierarch Fabricat CAS Ctr Excellence Nanosci Beijing 100190 Peoples R China;

    Synfuels China Technol Co Ltd Beijing 101400 Peoples R China;

    Synfuels China Technol Co Ltd Beijing 101400 Peoples R China;

    Synfuels China Technol Co Ltd Beijing 101400 Peoples R China;

    Synfuels China Technol Co Ltd Beijing 101400 Peoples R China;

    Natl Ctr Nanosci &

    Technol NCNST Key Lab Nanosyst &

    Hierarch Fabricat CAS Ctr Excellence Nanosci Beijing 100190 Peoples R China;

    Natl Ctr Nanosci &

    Technol NCNST Key Lab Nanosyst &

    Hierarch Fabricat CAS Ctr Excellence Nanosci Beijing 100190 Peoples R China;

    Natl Ctr Nanosci &

    Technol NCNST Key Lab Nanosyst &

    Hierarch Fabricat CAS Ctr Excellence Nanosci Beijing 100190 Peoples R China;

    Natl Ctr Nanosci &

    Technol NCNST Key Lab Nanosyst &

    Hierarch Fabricat CAS Ctr Excellence Nanosci Beijing 100190 Peoples R China;

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