柔性碳纳米管复合导电纸的制备及其在锌锰纸电池中的应用  

Preparation of Flexible Carbon Nanotubes Composite Conductive Paper and Its Application in Zinc-manganese Batteries

作　　者：吴小勇[1] 孙晓刚[1,2] 庞志鹏[1] 付琦[1] 程晓圆 

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,宜春336000

出　　处：《人工晶体学报》2015年第5期1240-1246,共7页Journal of Synthetic Crystals

基　　金：国家自然科学基金(60661001);江西省科技厅科研项目(2012ZBBE50012;20142BBE50071);2014年江西省研究生创新专项资金(YC2014-S016);江西省教育厅2013落地计划(KJLD13006)

摘　　要：以碳纳米管和纸纤维混合制成均匀液体经抽滤制备成复合导电纸。采用不同工艺将石墨化碳纳米管和纸纤维复合,通过四探针电阻仪表征表面电阻和XRD、TEM、SEM等表征内部结构。将制备的导电纸作为集流体,采用CT-3008W-5V5m A-S4检测仪测试锌锰纸电池电化学性能。结果表明,当碳纳米管与纸浆质量比为2∶1时,表面电阻为20Ω/□,碳纳米管与纸纤维复合效果最佳。使用碳纳米管导电纸作集流体时,和石墨集流体相比,放电时间增加36.7%~122.4%,电池质量能量密度提高64.1%~141%。碳纳米管导电纸作集流体能大幅提高电池的能量密度。The carbon nanotubes conductive paper was fabricated by making carbon nanotubes and paper fiber into mixing liquid and then filtration. The graphited carbon nanotubes and paper fibers were eomposited by different processes. The surface resistance of the conductive papers were measured by four- point probes （4PP） and the morphology were characterized by XRD, TEM and SEM. The conductive paper was used as the cathode current collector. The electrochemical properties of the batteries were tested by CT-3008W-5V5mA-S4 detector. The results indicate the surface resistance decreased to 20Ω/ □ with a mass ratio of 2：1 of carbon nanotubes and paper fibers. The carbon nanotubes and pulp fibers have a best Composite effect. The discharge time increases by 36.7% to 122.4% compared with graphite collector. The mass energy density of the batteries increases by 64.1% to 141%. The carbon nanotubes conductive paper can significantly improve the energy density of zinc-manganese battery.

关 键 词：碳纳米管 复合导电纸 二氧化锰 石墨 

分 类 号：TM911.1[电气工程—电力电子与电力传动]