木质素基碳纳米纤维/Co3O4复合电极的制备及其电化学性能的研究
摘 要
随着化石燃料的逐渐匮乏，以及环境问题的日益严重，电能作为清洁的二次能源应用更加广泛。超级电容器是一种更适用于现在的充、放电要求的储电设备，而电极又是决定着超级电容器的电化学性能的关键部分，所以研究者们对电极性能的改进做了各种研究。而传统的电极材料，多是用粉末状多孔碳，与粘结剂、导电物质结合，借助于集流体成型，额外增加了体积与质量，且电容输出效率不高。因此，本文针对碳纳米纤维与过渡金属氧化物复合电极对超级电容器的性能的影响，设计微型电极的制备方案，从而制备出微型高电容超级电容器。
关键词：超级电容器；碳纳米纤维；过渡金属氧化物；自支撑微型电极
Production and electrochemical performance of lignin-based carbon nanofiber /Co3O4 composite electrode
ABSTRACT
With the gradual shortage of fossil fuels and the increasingly serious environmental problems, electric energy as a clean secondary energy is more widely used. Ultracapacitors are more suitable for current charging and discharging requirements of storage equipment, and the electrode is a key part of determining the electrochemical performance of ultracapacitors, so researchers have done a variety of studies on the improvement of electrode performance. However, the traditional electrode materials are mostly powder porous carbon, which is combined with binder and conductive material, and formed by collecting fluid, which increases the volume and mass, and the output efficiency of capacitor is not high. Therefore, in view of the influence of carbon nanofiber and transition metal oxide composite electrode on the performance of supercapacitors, a preparation scheme of micro-electrode is designed to prepare micro-high-capacitance supercapacitors.
Keywords:Supercapacitor; Carbon nanofibers; Transition metal oxide; Self supporting micro electrode
1 引言
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