橡胶木纤维素纳米纤丝/二氧化锰/碳纳米管柔性电极材料的制备及表征

doi:10.3969/j.issn.1673-5854.2019.06.001

生物质化学工程 ›› 2019, Vol. 53 ›› Issue (6): 1-8.doi: 10.3969/j.issn.1673-5854.2019.06.001

• 研究报告 • 下一篇

橡胶木纤维素纳米纤丝/二氧化锰/碳纳米管柔性电极材料的制备及表征

郑丁源¹(),岳金权¹,岳大然²,李梦扬¹,张显权^1,*()

1. 东北林业大学生物质材料科学与技术教育部重点实验室, 黑龙江哈尔滨 150040
2. 海南大学热带农林学院, 海南儋州 571700

收稿日期:2018-10-17 出版日期:2019-11-30 发布日期:2019-12-10
通讯作者: 张显权 E-mail:zhengdingyuan0521@outlook.com;zhangxianquan2013@aliyun.com
作者简介:郑丁源(1994—),男,山西临汾人,硕士生,主要从事生物质纤维素基功能材料的研究; E-mail: zhengdingyuan0521@outlook.com

Preparation and Characteristics of Rubber Wood Cellulose Nanofibrils/MnO₂/CNTs Flexible Electrode Materials

Dingyuan ZHENG¹(),Jinquan YUE¹,Daran YUE²,Mengyang LI¹,Xianquan ZHANG^1,*()

1. Key Laboratory of Bio-Based Materials Science and Technology of Ministry of Education, Northeast Forestry University, Harbin 150040, China
2. Institute of Tropical Agriculture and Forestry, Hainan University, Danzhou 571700, China

Received:2018-10-17 Online:2019-11-30 Published:2019-12-10
Contact: Xianquan ZHANG E-mail:zhengdingyuan0521@outlook.com;zhangxianquan2013@aliyun.com

摘要/Abstract

摘要：

以橡胶木为原料，通过化学处理得到橡胶木纯化纤维素(PCF)，在此基础上通过高速剪切结合超声波处理制备得到纤维素纳米纤丝(CNF)。通过单相合成法制备二氧化锰(MnO₂)纳米片。以CNF为结构支撑体，MnO₂纳米片和碳纳米管(CNTs)作为活性电极物质，通过真空抽滤的方式制备CNF/MnO₂/CNTs柔性电极材料。采用多种手段对CNF、MnO₂以及电极材料的结构性能进行表征，并测试了电极材料的电化学性能。结构性能表征结果表明：CNF的直径为3~10 nm，具有大的长径比，是很好的结构支撑体，CNF为纤维素Ⅰ型结构；MnO₂纳米片为片层花瓣状结构，晶型为δ型。电化学性能测试结果表明：在扫描速率为50 mV/s时电极材料的比电容值为78.45 F/g，在电流密度为0.1 A/g时的电极材料比电容值为97.02 F/g，在低频区时，交流阻抗(EIS)曲线的直线部分斜率较大，表明电极材料具有良好的电容特性，在200次充放电循环测试过程中，电极材料的电容保留率始终维持在99%左右，表明该电极材料具有良好的电化学性能并且具有一定的柔性变形能力，可用作超级电容器的电极材料。

关键词: 橡胶木, 纤维素纳米纤丝, 二氧化锰, 碳纳米管, 柔性电极材料

Abstract:

Rubber wood purified cellulose fibrils(PCF) were prepared by chemical treatment. Cellulose nanofibrils(CNF) was obtained by high-speed shearing followed by ultrasonication. Manganese dioxide(MnO₂) nanosheet was prepared by one-way synthesis method. Flexible electrode materials were prepared by vacuum filtration using CNF as structural support, MnO₂ and carbon nanotubes(CNTs) as active electrode materials. The structure and properties of CNF, MnO₂ and electrode materials were characterized by various means, and the electrochemical properties of the prepared electrode materials were characterized. The results showed that the diameter of CNF was 3-10 nm. The obtained CNF had a large aspect ratio and could be utilized as a good structural substrate. Additionally, CNF had typical cellulose type I structure. The MnO₂ nanosheets had petal-like structure with a crystal form of δ. The results of electrochemical performance showed that the specific capacitances at the scan rate of 50 mV/s and the current density of 0.1 A/g were 78.45 and 97.02 F/g, respectively. In the low frequency region, the slope of the straight part of the electrochemical impedance spectroscopy(EIS) was large, which indicated that the electrode material had good capacitance characteristics. The capacitance retention of the electrode material was always maintained at about 99% during the 200 charge and discharge cycle test. The results showed that the electrode material had good electrochemical properties and certain flexibility, and can be used as an electrode material for supercapacitors.

Key words: rubber wood, cellulose nanofibrils, manganese dioxide, carbon nanotubes, flexible electrode materials

中图分类号:

TQ352.79

郑丁源,岳金权,岳大然,李梦扬,张显权. 橡胶木纤维素纳米纤丝/二氧化锰/碳纳米管柔性电极材料的制备及表征[J]. 生物质化学工程, 2019, 53(6): 1-8.

Dingyuan ZHENG,Jinquan YUE,Daran YUE,Mengyang LI,Xianquan ZHANG. Preparation and Characteristics of Rubber Wood Cellulose Nanofibrils/MnO₂/CNTs Flexible Electrode Materials[J]. Biomass Chemical Engineering, 2019, 53(6): 1-8.

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橡胶木纤维素纳米纤丝/二氧化锰/碳纳米管柔性电极材料的制备及表征

Preparation and Characteristics of Rubber Wood Cellulose Nanofibrils/MnO₂/CNTs Flexible Electrode Materials

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