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Hybrid crumpled graphene supported Fe-Co binary oxides nanoparticles for aqueous asymmetric supercapacitors

机译:用于水性不对称超级电容器的杂化皱纹石墨烯负载的Fe-Co二元氧化物纳米粒子

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摘要

Asymmetric supercapacitors are considered promising energy storage devices due to their high applied voltage and corresponding high energy density. Herein, Fe-Co binary oxides nanoparticles loaded crumpled graphene (CGR) composites were prepared for use as the positive electrode material of asymmetric supercapacitors (ASC) using aerosol spray pyrolysis and post heat-treatment processes. The composites showed a crumpled paper like morphology and were around 1 mu m in average diameter. Asymmetric electrode structures were fabricated using the composites as the positive electrode and CGR as the negative electrode. Electrochemical measurement of the ASC indicated excellent capacitive performance, which resulted in high energy density (36 W h kg (1)) and long-term cycling stability after 2000 cycles at a current density of 1 A g(-1). (C) 2018 Elsevier B.V. All rights reserved.
机译:非对称超级电容器由于其高施加电压和相应的高能量密度而被认为是有前途的储能设备。在本文中,使用气溶胶喷雾热解和后热处理工艺制备了Fe-Co二元氧化物纳米颗粒负载的皱纹石墨烯(CGR)复合材料,用作不对称超级电容器(ASC)的正极材料。该复合材料显示出像皱纸一样的形态,并且平均直径为约1μm。使用复合材料作为正电极和CGR作为负电极来制造不对称电极结构。 ASC的电化学测量显示出优异的电容性能,这导致高能量密度(36 W h kg(1))和2000次循环后在1 A g(-1)的电流密度下具有长期循环稳定性。 (C)2018 Elsevier B.V.保留所有权利。

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  • 来源
    《Applied Surface Science》 |2018年第1期|571-575|共5页
  • 作者单位

    Korea Inst Geosci & Mineral Resources, Resources Utilizat Res Ctr, Daejeon 34132, South Korea;

    Korea Inst Geosci & Mineral Resources, Resources Utilizat Res Ctr, Daejeon 34132, South Korea;

    Korea Inst Geosci & Mineral Resources, Resources Utilizat Res Ctr, Daejeon 34132, South Korea;

    Korea Inst Geosci & Mineral Resources, Resources Utilizat Res Ctr, Daejeon 34132, South Korea;

    Korea Inst Geosci & Mineral Resources, Resources Utilizat Res Ctr, Daejeon 34132, South Korea;

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