石油沥青基碳纳米管的制备、表面改性及其电化学性能

刘仕涛; 陈晓南; 李丽

doi:10.13568/j.cnki.651094.2017.02.010

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石油沥青基碳纳米管的制备、表面改性及其电化学性能

更新时间：2026-01-21

- 石油沥青基碳纳米管的制备、表面改性及其电化学性能
- Journal of Xinjiang University (Natural Science Edition in Chinese and English) Vol. 34, Issue 2, Pages: 177-182(2017)
- 作者机构：
  
  1. 新疆大学应用化学研究所能源材料化学教育部重点实验室先进功能材料自治区重点实验室
  2. 新疆大学化学化工学院
- 作者简介：
- 基金信息：
- DOI：10.13568/j.cnki.651094.2017.02.010
  CLC： TQ127.11;TB383.1
- Published：2017
- 稿件说明：
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[1]刘仕涛,陈晓南,李丽.石油沥青基碳纳米管的制备、表面改性及其电化学性能[J].新疆大学学报(自然科学版),2017,34(02):177-182.
[1]刘仕涛,陈晓南,李丽.石油沥青基碳纳米管的制备、表面改性及其电化学性能[J].新疆大学学报(自然科学版),2017,34(02):177-182. DOI： 10.13568/j.cnki.651094.2017.02.010.

DOI：10.13568/j.cnki.651094.2017.02.010.

摘要

以新疆石油沥青为碳源

NiCl2·6H_2O作催化剂

采用化学气相沉积法

在氮气气氛中加热至1200?C恒温3 h制备出碳纳米管(CNTs).采用场发射扫描电子显微镜(FE-SEM)、透射电镜(TEM)、X射线粉末衍射(XRD)和拉曼光谱(Roman)对所制备的产物进行形貌和结构表征.结果表明产物为石墨化程度较低的多壁碳纳米管

其直径和长度分别为40～80 nm和0.5～3.0μm.研究了KOH活化和混酸(浓硝酸:浓硫酸=1:3)酸化对CNTs电容的影响

发现当CNTs与KOH按1:2质量比混合、700?C下活化后再混酸酸化

在电流密度为0.5A·g-1时CNTs的电容为42 F·g-1

当电流密度增大10倍的情况下

其电容量仍旧保持了83.8%

体现出良好的倍率性能.

Abstract

Carbon nanotubes(CNTs) have been synthesized by chemical vapor deposition(CVD) in the presence of NiCl2·6H_2O using Xinjiang petroleum asphalt as carbon source. The products were characterized by field-emission scanning electron microscopy(FE-SEM)

transmission electron microscopy(TEM)

X-ray diffraction(XRD) techniques and Raman spectrum. The results revealed that the CNTs with diameters and length ranging from 4 to 80 nm and 0.5 to 3 μm showed a relatively low degree of graphitization. The electrochemical performances of CNTs using KOH and mixed acid treatment have been researched. The results showed that the specific capacitance of CNTs processed by KOH(the mass ratio of KOH and CNTs was 2:1) at 700?C and then treated by mixed acid

the specific capacitance of CNTs reaches 42 F·g-1at current density of 0.5 F·g-1and kept up with 83.8% capacitance retention at a current of 5 A·g-1.

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