碳纳米管纤维的连续制备及高性能化

吴昆杰, 张永毅, 勇振中, 李清文

Continuous Preparation and Performance Enhancement Techniques of Carbon Nanotube Fibers

Kunjie Wu, Yongyi Zhang, Zhenzhong Yong, Qingwen Li

表2 高效碳纳米管纤维电学增强方法与增强效果

Table 2 Summary of the efficient enhancement methods for conductivity of CNTFs.

Enhancement methods for conductivity of CNT fibers Conductivity (S?m?1) Specific conductivity (S?m2?kg?1) Ref. FCCVD CNT fibers Stretching with the aid of chlorosulfonic acid – 2270 89 Densification by twisting 1.2 × 106 – 99 Densification by mechanical pressing (using a spatula) 1.2 × 106 – 101 Densification by liquid induced shrink, mechanical rolling 2.24 × 106 – 47 Densification by drawing through tungsten carbide dies, doping with KAuBr4 1.3 × 106 – 96 Alignment by stretching, doping with I2, capping with conducting polymer 1.3 × 106 – 149 Removing Fe catalyst impurities, doping with I2 6.7 × 106 1.96 × 104 170 Doping with Br2 gas 1.63 × 106 1390 168 Combining with Cu by physical vapor deposition, densification by drawing through a series of dies 1.37 × 107 – 183 Array spinning CNT fibers Densification by twisting, shrinking induced by solvent evaporation 9.1 × 104 – 31 Alignment by “Microcombing” 1.8 × 105 – 78 Combining with GO 9.0 × 104 – 159 Forming CNT/C composite by infiltrating with poly-dopamine, pyrolysis 4.9 × 105 – 116 Doping with H2O2 3.6 × 105 – 169 Combining with Cu through organic electrodeposition and aqueous electrodeposition 4.7 × 107 8300 184 Combining with Al/Cu by sputtering, heat-induced diffusion 1.8 × 107 – 112 Combining with Cu by continuous anodization and electrodeposition 1.84 × 107 – 186 Wet spinning CNT fibers Spinning from liquid crystal CNT dope, doping with I2 5.0 × 106 – 25 Spinning from liquid crystal CNT dope, using long CNT 1.09 × 107 – 17