化工新型材料

化工新型材料 ›› 2024, Vol. 52 ›› Issue (5) : 141-145. DOI: 10.19817/j.cnki.issn1006-3536.2024.05.032

新材料与新技术

Ti₃C₂T_x-纳米纤维素复合气凝胶的制备及其电化学性能的研究

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Preparation and electrochemical properties of Ti₃C₂T_x-nanocellulose composite aerogel

Cao Xiaofeng, Huang Weiqing, Wang Likui, Liu Jing, Liu Hongzhi, Yao Bolong

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文章历史 +

Received		Published
2023-02-15		2024-05-20
Issue Date	Revised Date
2024-05-28	2023-02-15

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摘要

将纳米纤维素(CNF)与Ti₃C₂T_x MXene按不同的质量比制备气凝胶。结果表明:复合气凝胶形成了泡沫状的三维分层结构,MXene的层间距得以扩大,其中丰富的孔道加速了离子的传输,较大的比表面积为电化学反应提供了更多的活性位点。当纳米纤维素/MXene质量比为1∶5时,该N₁M₅气凝胶电极的电化学性能最佳。N₁M₅气凝胶电极在0.5A/g时,比电容为208F/g,当电流密度增加至10A/g时,显示出85.1%的高容量保留率。在5A/g下充/放电10000次后,容量保持率高达97.3%,循环性能优异。

Abstract

Nanocellulose (CNF) and Ti₃C₂T_x MXene were used to prepare aerogels at different mass ratios.The results showed that the composite aerogel developed a foam-like three-dimensional layered structure,and the layer spacing of MXene was expanded,in which the abundant pores accelerated the ion transport and the larger surface area provided more active sites for the electrochemical reaction.When the mass ratio of nanocellulose/MXene was 1∶5,the electrochemical performance of the N₁M₅ aerogel was the best.The specific capacitance of N₁M₅ aerogel electrode was 208F/g at 0.5A/g.When the current density increased to 10A/g,it showed a high capacity retention rate of 85.1%.After charging and discharging of 10000 times at 5A/g,the capacity retention rate was up to 97.3%,exhibiting an excellent cycling performance.

关键词

超级电容器 / Ti₃C₂T_x MXene / 纳米纤维素 / 气凝胶 / 电化学性能

Key words

supercapacitor / Ti₃C₂T_x MXene / nanocellulose / aerogel / electrochemical performance

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Ti₃C₂T_x-纳米纤维素复合气凝胶的制备及其电化学性能的研究[J]. 化工新型材料, 2024, 52(5): 141-145 DOI:10.19817/j.cnki.issn1006-3536.2024.05.032

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基金资助

国家自然科学基金(51302109)

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