回收废纸制备碳纳米管导电纸

摘要

This paper reports on an easy process of fabricating conductive carbon nanotube (CNT) paper by recycling waste paper. In the absence of a dispersion agent, we just mixed and ground multi-walled carbon nanotubes (MWCNT) and shredded A4 paper together in water. CNT paper was obtained after ifltering and rolling the mixture of MWCNT and waste paper. The thickness of the CNT paper was controllable by using different volumes of the mixture in the fabrication. Scanning electron microscope images showed that MWCNT was evenly stuck to the surface of the cellulose. Raman spectra indicated that the structure of a sidewall of MWCNT was inlfuenced by cellulose through the mixing process. In addition, the thermal stability of CNT paper was enhanced in proportion to the amount of MWCNT used. The presence of MWCNT also contributed to the enhancement in the elastic properties of CNT paper. Depending on the amount of MWCNT and the thickness of CNT paper, the sheet resistance of CNT paper varied from 49.1Ω.sq-1 to 3365.6Ω.sq-1. This CNT paper can be utilized in the fields of electronic devices and energy storage devices, leading to easy mass-production at low cost.%介绍了一种用回收废纸制备碳纳米管（CNT）导电纸的工艺，在添加分散剂的条件下，将多壁碳纳米管（MWCNT）与磨碎的A4纸混合放入水中，然后将混合物经过机械搅拌、过滤制得CNT导电纸，CNT导电纸的厚度通过改变MWCNT和废纸的加入量来控制。扫描电子显微镜图像显示，碳纳米管均匀地粘在纤维表面。拉曼光谱表明，MWCNT的侧壁结构在混合过程中受到了纤维素的影响。此外，CNT导电纸的热稳定性随着MWCNT用量的增加而增加。MWCNT的存在也使得CNT导电纸的弹性性能得到改善。受MWCNT用量和纸的厚度的影响，CNT导电纸的表面电阻率在49.1～3365.6Ω.s/q变动。这种CNT导电纸可以应用在电子设备和储能设备上，成本低且易实现大规模生产。