Fe3O4/C 复合材料的制作与性能

T. Bui, Ha Thang Doan
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引用次数: 0

摘要

气候变化是当前全球面临的最严重问题之一。在这项研究中,Fe3O4 粉末被用作电极活性材料,纳米碳被用作添加剂,以制造出应用于储能系统的 Fe3O4/C 复合材料。通过扫描电子显微镜研究了氧化铁和纳米碳的尺寸和形态。通过循环伏安法研究了添加剂、电极成分含量对 Fe3O4/C 复合电极电化学性能的影响。结果表明,电极成分的含量对电极的电化学特性有很大影响。碳添加剂在 Fe3O4/C 复合电极中的重要作用得到了证实:纳米碳增加了电极的导电性,从而提高了铁的氧化还原反应速率。K2S 添加剂在电解液中的积极作用体现在提高了铁的氧化还原反应速率,改善了 Fe3O4 的循环性,减少了氢的演化,从而提高了 Fe3O4/C 的放电容量。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Fabrication and properties of Fe3O4/C composite materials
Climate change is currently one of the most serious problems facing the world. In this study, Fe3O4 powder was used as electrode active material, nanocarbon was used as an additive to fabricate Fe3O4/C composites applying for energy storage systems. The size and morphology of iron oxide and nanocarbon were investigated by scanning electron microscopy. The effects of the additive, the content of the electrode components on the electrochemical properties of the Fe3O4/C composite electrode have been studied by cyclic voltammetry. The results showed that the content of the electrode components strongly affects the electrochemical characteristics of the electrode. The important role of the carbon additive in the Fe3O4/C composite electrode was confirmed: Nanocarbon increases the electrical conductivity of the electrode thereby enhancing the redox reaction rate of iron. The positive effect of the K2S additive in electrolyte was demonstrated by increased redox reaction rate of iron, improved cyclability of Fe3O4, reduced hydrogen evolution, and thus increased the discharge capacity of Fe3O4/C.
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