Fabrication of composite GO/NiFe2O4-MnFe2O4-CoFe2O4 anode material: Toward high performance hybrid supercapacitors

IF 4.6 Q2 MATERIALS SCIENCE, BIOMATERIALS
Seyed Ali Hosseini Moradi, Nader Ghobadi
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引用次数: 0

Abstract

Here, NiFe2O4, MnFe2O4, and CoFe2O4 nanoferrites are prepared by coprecipitation synthesis technique from nickel, manganese, and cobalt chloride precursors. Synthesized nanoferrites are annealed by calcination process at 800°C for 2 h. To produce a novel anode electrode material for asymmetric supercapacitors (ASCs), the composite material of GO/NiFe2O4-MnFe2O4-CoFe2O4 is fabricated. Physicochemical aspects of the synthesized nanoferrites are evaluated. X-ray diffraction, Fourier transform infrared spectroscopy, scanning electron microscopy, and x-ray photoelectron spectroscopy tests are conducted, respectively. The electrochemical activities are studied by cyclic voltammetry, glavanostatic charge–discharge, and electrochemical impedance spectroscopy (EIS) in 2 M KOH as the electrolyte. In three electrode system, the novel GO/NiFe2O4-MnFe2O4-CoFe2O4 electrode displays a high specific capacity of 325 C g−1 and preserves about 99.9% of its initial specific capacity. The GO/NiFe2O4-MnFe2O4-CoFe2O4//GO ASCs device is assembled using GO/NiFe2O4-MnFe2O4-CoFe2O4, GO, and 2 M KOH solution as the positive electrode, negative electrode, and electrolyte, respectively. Significantly, the GO/NiFe2O4-MnFe2O4-CoFe2O4//GO ASCs represent an outstanding energy density of 50.5 W h kg−1 at power density of 2560 W kg−1. Through the long-term charge discharge cycling tests, this ASC device illustrates about 93.7% capacity retention after 3000 cycles. Then, the present study provides the NiFe2O4-MnFe2O4-CoFe2O4 composite nanoferrites as a novel favorable candidate for anode material.

Research Highlights

  • Simple and green synthesis of magnetic NiCo2O4/NiO/rGO composite nanostructure using natural precursor.
  • Fabricating and designing an efficient semiconductor for degradation ability.
  • NiCo2O4/NiO/rGO nanocomposite with advanced photo elimination catalytic routine.
  • The photocatalytic performance of NiCo2O4/NiO/rGO was surveyed for the degradation of various antibiotics below visible radiation.
  • Efficiency was 92.9% to eliminate tetracycline.

We developed a synergetic approach to prepare a novel active material composed of GO/ NiFe2O4-MnFe2O4-CoFe2O4 by a hybrid electrode material. Green synthesis method was accomplished to attain NiCo2O4/NiO/rGO nanocomposite with advanced photo elimination catalytic routine. The oxide nanobundles were prepared with a rapid and eco-friendly method. In order to investigation of the effect of natural precursor, morphology and shape of nanoproducts was compared. NiCo2O4/NiO/rGO nanobundles possess a suitable bandgap in the visible area.

Abstract Image

GO/NiFe2O4-MnFe2O4-CoFe2O4 复合负极材料的制备:实现高性能混合超级电容器。
本文采用共沉淀合成技术,以氯化镍、锰和钴为前体,制备了 NiFe2O4、MnFe2O4 和 CoFe2O4 纳米铁氧体。为了生产一种新型的非对称超级电容器(ASCs)阳极电极材料,制备了 GO/NiFe2O4-MnFe2O4-CoFe2O4 复合材料。对合成的纳米铁氧体进行了物理化学方面的评估。分别进行了 X 射线衍射、傅立叶变换红外光谱、扫描电子显微镜和 X 射线光电子能谱测试。在 2 M KOH 作为电解质的条件下,通过循环伏安法、静电充放电法和电化学阻抗谱法研究了其电化学活性。在三个电极体系中,新型 GO/NiFe2O4-MnFe2O4-CoFe2O4 电极显示出 325 C g-1 的高比容量,并保持了约 99.9% 的初始比容量。GO/NiFe2O4-MnFe2O4-CoFe2O4/GO ASCs 器件分别以 GO/NiFe2O4-MnFe2O4-CoFe2O4、GO 和 2 M KOH 溶液为正极、负极和电解液组装而成。值得注意的是,在功率密度为 2560 W kg-1 时,GO/NiFe2O4-MnFe2O4-CoFe2O4/GO ASCs 的能量密度高达 50.5 W h kg-1。通过长期充放电循环测试,该 ASC 器件在 3000 次循环后的容量保持率约为 93.7%。因此,本研究将 NiFe2O4-MnFe2O4-CoFe2O4 复合纳米铁氧体作为新型负极材料的有利候选材料。研究亮点利用天然前驱体简单绿色地合成磁性 NiCo2O4/NiO/rGO 复合纳米结构。制造和设计一种具有降解能力的高效半导体。具有先进光消除催化作用的 NiCo2O4/NiO/rGO 纳米复合材料。研究了 NiCo2O4/NiO/rGO 在可见光辐射下降解各种抗生素的光催化性能。消除四环素的效率为 92.9%。我们开发了一种协同方法,通过混合电极材料制备了一种由 GO/NiFe2O4-MnFe2O4-CoFe2O4 组成的新型活性材料。我们采用绿色合成方法,通过先进的光消除催化程序制备出了镍钴氧化物/镍氧化物/rGO 纳米复合材料。氧化物纳米束的制备过程既快速又环保。为了研究天然前驱体的影响,比较了纳米产品的形态和形状。NiCo2O4/NiO/rGO 纳米束在可见光区域具有合适的带隙。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
ACS Applied Bio Materials
ACS Applied Bio Materials Chemistry-Chemistry (all)
CiteScore
9.40
自引率
2.10%
发文量
464
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