碳纳米管/氧化铁复合材料作超级电容器电极材料的研究进展

Research on Advances in Carbon Nanotube/Iron Oxide Composites as Electrodes for Supercapacitors

碳纳米管/氧化铁复合材料作为超级电容器材料具有高电导性、高比表面积、高比容量、良好的循环稳定性、易于结构优化及成本低等优点,有望在超级电容器领域发挥重要作用.对碳纳米管/氧化铁复合材料在超级电容器中的相关应用进行介绍,并概述了传统超级电容器的电荷存储机制、发展过程、优点和缺点,以及扩大电势范围的原理;然后,详细讨论了碳纳米管/氧化铁复合材料的制备方法和电化学性能提升;最后,总结了碳纳米管/氧化铁复合材料作为超级电容器电极材料的优点和挑战,并展望了未来的发展方向.

The carbon nanotube/iron oxide composites,as a kind of supercapacitor materials,possesses a multitude of merits including elevated electrical conductivity,high specific surface area,high specific capacity,good cycle stability,easy structure optimization and low cost.It is expected to play a significant role in the field of supercapacitors.In this article,the importance and application fields of supercapacitors are introduced,and the charge storage mechanism,development process,advantages and disadvantages of traditional supercapacitors are summarized,so is the principle of expanding the range of potential.Subsequently,the preparation method of carbon nanotubes/iron oxide composites and the methods used to improve the electrochemical properties are discussed in detail.Finally,the advantages and challenges of carbon nanotube/iron oxide composites as supercapacitor electrodes are summarized,and the future development in this field is envisioned.