复合碳纳米管纸制备及作为锂离子电池负极的研究  

Preparation and Application as Anodes in Lithium-ion Battery of Composite Carbon Nanotube Paper

作　　者：吴小勇[1] 孙晓刚[1,2] 聂艳艳[1] 庞志鹏[1] 刘珍红 

机构地区：[1]南昌大学机电工程学院,南昌330031 [2]南昌大学(宜春)锂电及新能源汽车研究院,南昌330031

出　　处：《人工晶体学报》2015年第10期2771-2777,共7页Journal of Synthetic Crystals

基　　金：江西省科技厅科技计划(20142BBE50071);江西省教育厅科技计划(KJLD13006)

摘　　要：研究了一种由碳纳米管和纸纤维制备的新型导电纸。以纸纤维为基本骨架,碳纳米管为导电填充剂,通过真空抽滤法制备导电纸,对比了石墨化碳纳米管和未石墨化碳纳米管分别作为导电填料导电纸的性能。通过扫描电子显微镜、透射电镜、四探针电阻仪、XRD衍射、Raman光谱等进行性能表征。导电纸裁切为负极极片并组装成半电池,通过CT-3008W-5V5m A-S4电池放电柜检测电池电化学性能。研究表明:碳纳米管经高温石墨化处理后作为负极,在0.1 C条件下电池稳定放电比容量为266 m Ah/g,相比于改性前的142 m Ah/g,提高了87.3%。A new type of carbon nanotube （CNT） paper were prepared by mixing carbon nanotube with paper fiber. The paper fibers were used as the basic framework and the carbon nanotubes as conductive filler. The CNT papers were made by vacuum filtration method. The properties of the conductive paper, which used carbon nanotubes as the conductive fillers, were compared with the graphited carbon nanotubes and the raw graphite carbon nanotubes. The morphology and performance of the CNTs and CNT papers were characterized by the scanning electron microscope （SEM）, transmission electron microscope（TEM）, four-point probes, XRD diffraction and Raman spectra. The CNT papers were cut into the anode electrodes and assembled into half cells. The electrochemical performance of the batteries were detected by a cell tester （CT-3008W-5V5mA-S4）. The results show that the stable discharge specific capacity of the cells reached 266 mAh/g at 0.1 C with graphitized CNTs as filler of the anode electrodes. The specific discharge capacity of batteries increases from 142 mAh/g to 266 mAh/g and achieve a 87.3% improvement.

关 键 词：碳纳米管 纸纤维 导电纸 放电比容量 锂离子电池 

分 类 号：TM912.9[电气工程—电力电子与电力传动]