碳纳米管/羧甲基纤维素钠杂化材料修饰电极的制备及其电化学性能研究

伴随着纯电动汽车、利用清洁能源的高效储蓄和便携式电子产品的飞速发展，寻找具有高功率密度、低成本、高可靠性、环保且寿命长的新型电化学储能材料与器件迫在眉睫。纤维素是一种自然形成的有机聚合物，其自身良好的生物相容性和可降解性使其在新能源材料应用上备受关注。近年来，天然纤维素微纳化与新型纤维素衍生材料制备的工程化，极大扩大了纤维素基材料在新能源领域的应用范围。通过杂化、物理共混、化学改性、掺杂与互穿等方式，构建与制备纤维素基高性能绿色环保储能材料具有理论研究价值和应用潜力。本工作将羧甲基纤维素钠作为碳纳米管的分散剂构建杂化体系，使碳纳米管的电化学性能得以充分发挥，通过溶剂配比、PH值等影响因素的探索，得到制备电化学性能优异的杂化体系的最佳实验条件，该杂化体系修饰后的电极材料具备构建超级电容器的巨大潜力。

Preparation and Electrochemical Properties of Carbon Nanotube/Sodium Carboxymethyl Cellulose Hybrid Modified Electrode

With the rapid development of pure electric vehicles, efficient savings using clean energy and portable electronic products, it is urgent to find new electrochemical energy storage materials and devices with high power density, low cost, high reliability, environmental protection and long service life. Cellulose is a naturally formed organic polymer. Its good biocompatibility and degradability have attracted much attention in the application of new energy materials. In recent years, the micronization of natural cellulose and the engineering of the preparation of new cellulose derived materials have greatly expanded the application range of cellulose based materials in the field of new energy. The construction and preparation of cellulose based high-performance green energy storage materials through hybridization, physical blending, chemical modification, doping and interpenetration has theoretical research value and application potential. In this work, sodium carboxymethyl cellulose was used as the dispersant of carbon nanotubes to construct the hybrid system, so as to give full play to the electrochemical performance of carbon nanotubes. Through the exploration of influencing factors such as solvent ratio and pH value, the best experimental conditions for preparing the hybrid system with excellent electrochemical performance were obtained. The electrode material modified by the hybrid system has great potential to construct super capacitors.