甲殼素/碳納米管復(fù)合電極的制備及其性能(英文)
發(fā)布時間:2021-08-12 15:32
介紹了一種簡單、新穎、環(huán)保的制備甲殼素/多壁碳納米管復(fù)合電極的工藝方法。先利用一次研磨法制備出甲殼素納米纖維(CNFs),纖維直徑分布在1030 nm之間;然后使用十二烷基苯磺酸鈉(SDBS)作為多壁碳納米管的分散劑,通過超聲混合法制備CNFs/碳納米管(CNTs)復(fù)合電極;再使用掃描電鏡、力學(xué)試驗機(jī)、四探針、熱機(jī)械分析儀、電化學(xué)工作站等對材料性能進(jìn)行測試。結(jié)果表明,CNFs/CNTs復(fù)合薄膜內(nèi)部纖維相互交織,呈現(xiàn)三維網(wǎng)狀結(jié)構(gòu)。在此復(fù)合物中,甲殼素起到了增強(qiáng)力學(xué)性能和抑制碳納米管團(tuán)聚的作用,力學(xué)性能隨著碳納米管含量的增加而降低,拉伸強(qiáng)度和楊氏模量低至46.23 MPa和1.18 GPa,相比于甲殼素純膜(113.48 MPa和3.72 GPa)分別減少了59.3%和68.3%。熱膨脹系數(shù)從2.84×10-5m/K降至3.42×10-6m/K,僅有甲殼素純膜的12%。CNFs/CNTs復(fù)合材料的電導(dǎo)率(1 471.9 S/m)顯著提高且電化學(xué)性能優(yōu)異,電容量在經(jīng)過1 000次充放電循環(huán)之后依然保持在99%以上,在掃描速率為10 m V/s時,復(fù)合薄膜的電容量達(dá)到48...
【文章來源】:林業(yè)工程學(xué)報. 2016,1(03)北大核心
【文章頁數(shù)】:7 頁
【文章目錄】:
1 Experiment
1.1 Reagents and Materials
1.2 Fabrication of chitin nanofibers(CNFs)
1.3 Preparation of CNFs/CNTs films
2 Characterization
2.1 FE-SEM observation
2.2 Thermomechanical analysis(TMA)
2.3 Mechanical properties
2.4 Conductivity measurements
2.5 Electrochemical measurements
3 Experimental results
3.1 Photographs of the fabrication and the films
3.2 Morphology of CNFs nanopaper and the com-posite films
3.3 Coefficient of thermal expansion(CTE)
3.4 Tensile properties
3.5 Conductivity properties
3.6 Electrochemical properties
4 Conclusions
本文編號:3338582
【文章來源】:林業(yè)工程學(xué)報. 2016,1(03)北大核心
【文章頁數(shù)】:7 頁
【文章目錄】:
1 Experiment
1.1 Reagents and Materials
1.2 Fabrication of chitin nanofibers(CNFs)
1.3 Preparation of CNFs/CNTs films
2 Characterization
2.1 FE-SEM observation
2.2 Thermomechanical analysis(TMA)
2.3 Mechanical properties
2.4 Conductivity measurements
2.5 Electrochemical measurements
3 Experimental results
3.1 Photographs of the fabrication and the films
3.2 Morphology of CNFs nanopaper and the com-posite films
3.3 Coefficient of thermal expansion(CTE)
3.4 Tensile properties
3.5 Conductivity properties
3.6 Electrochemical properties
4 Conclusions
本文編號:3338582
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