细菌纤维素@聚吡咯-单壁碳纳米管导电膜的制备与表征
Preparation and characterization of bacterial cellulose@polypyrrole-single wall carbon nanotube conductive films

为了获得柔性高电导率导电材料，以细菌纤维素（BC）、吡咯（Py）和单壁碳纳米管（SWCNTs）为原料，在不添加任何黏合剂的情况下，通过简单的原位氧化聚合和真空过滤法制备了BC@聚Py-SWCNTs（BC@PPy-SWCNTs）新型导电膜。通过SEM、FTIR对BC@PPy-SWCNTs复合膜的表面形貌、化学成分进行表征。研究了BC@PPy-SWCNTs膜的电化学性能。结果表明，在SWCNTs添加量为4.7%（质量比）时，BC@PPy-SWCNTs复合膜的电导率可达到6.42 S·cm-1，相比BC@PPy有了很大提高，在充电电流为5 mA·cm-2时，其面积电容可达到0.53 F·cm-2，其能量密度达0.036 mWh·cm-2，功率密度达到1.75 mW·cm-2。BC@PPy-SWCNTs膜拓宽了电极材料的种类，有望应用于超级电容器、电池及传感器等领域。 In order to obtain flexible high-conductivity conductive materials, a novel conductive film of bacterial cellulose@polypyrrole-single wall carbon nanotubes(BC@PPy-SWCNTs) composite films was prepared by simple in situ oxidative polymerization and vacuum filtration using BC, pyrrole (Py) and SWCNTs as the raw materials without any adhesive. The surface morphology and chemical composition of BC@PPy-SWCNTs composite films were characterized by SEM and FTIR. The electrochemical properties of BC@PPy-SWCNTs composite films were studied. The results demonstrate that when the 4.7% mass ratio of SWCNTs is added, the conductivity of BC@PPy-SWCNTs film can reach 6.42 S·cm-1, which is much higher than that of BC@PPy film. When the charging current is 5 mA·cm-2, the area capacitance of BC@PPy-SWCNTs composite films can reach 0.53 F·cm-2 with an energy density of 0.036 mWh·cm-2 and a power density of 1.75 mW·cm-2, respectively. The film widens the variety of BC@PPy-SWCNTs composite films electrode composite films, which has a great possibility for use in supercapacitors, batteries, and sensors. 国家重点研发计划（2017YFB0309800；2016YEC0400503-02）；国家自然科学基金（31200719；51403152；51473122）；天津市科技特派员项目（16JCTPJC44400）；天津市应用基础及前沿技术研究计划（14JCQNJC14200）；新疆自治区重大项目（2016A03006-3）；中国纺织工业联合会科技指导性项目（2017011