碳纳米球纤维基电极材料的制备及性能研究

Preparation and properties of carbon nanosphere fibers-based electrode materials

将一维纳米纤维素纤维(NCFs)作为MoS_(2)的有效分散剂,通过超临界二氧化碳干燥和高温碳化过程制备碳纳米球纤维(CNPFs)/MoS_(2)纳米杂化气凝胶电极材料。利用SEM、EDS、FT-IR和电化学测试等手段对杂化电极材料的组成、结构和电化学性能进行表征。结果表明,一定量的NCFs是MoS_(2)的稳定分散剂,可以有效阻碍MoS_(2)纳米片层的团聚。所制备的CNPFs/MoS_(2)杂化气凝胶电极材料在0.5 A/g电流密度下的质量比电容高达366.84 F/g,而且具有优异的循环稳定性。

Carbon nanosphere fibers(CNPFs)/MoS_(2) nanohybrid aerogel electrode materials are prepared by supercritical carbon dioxide drying-high temperature carbonization process,using one-dimensional nanocellulose fibers(NCFs)as an effective dispersant for MoS_(2).The composition,structure and electrochemical performance of the hybrid electrode materials are characterized via SEM,EDS,FT-IR and electrochemical measurements.It is shown that a certain amount of NCFs is a stable dispersant for MoS_(2),which can effectively prevent MoS_(2) nanosheets from agglomeration.Mass specific capacitance of the prepared CNPFs/MoS_(2) hybrid aerogel electrode material reaches as high as 366.84 F·g^(-1)at a current density of 0.5 A·g^(-1).In addition,it has excellent cycle stability.