氮掺杂碳层对铜碳纳米管纤维复合材料性能影响及机制初探  

Effect of Nitrogen-doped Carbon Layer on Performance of Copper-carbon Nanotube Fiber Composites and Mechanism

作　　者：董逸豪 罗杰[2] 李雷[3] 门传玲[1] 张其冲 DONg Yihao;LUO Jie;LI Lei;MEN Chuanling;ZHANG Qichong(School of Energy and Power Engineering,University of Shanghai for Science and Technology,Shanghai 200093,China;Division of Advanced Nanomaterials and Key Lab of Nano-devices and Applications,Suzhou Institute of Nano-tech and Nano-bionics Chinese Academy of Sciences,Suzhou 215123,China;School of Electronic Science&Engineering,Southeast University,Nanjing 210096,China)

机构地区：[1]上海理工大学能源与动力学院,上海200093 [2]中科院苏州纳米技术与纳米仿生研究所轻量化实验室,江苏苏州215123 [3]东南大学电子科学与工程学院,江苏南京210096

出　　处：《广州化学》2024年第2期41-45,I0003,共6页Guangzhou Chemistry

摘　　要：用碳纳米管纤维(CNTF)、盐酸多巴胺、五水硫酸铜作为原料,通过浸泡、热处理和电化学沉积等连续工艺合成了高导电性铜-碳纳米管纤维复合材料(Cu@NC@CNTF)。用场发射扫描电子显微镜对复合纤维表面进行形貌表征,用X射线光电子能谱、小角X射线散射站对氮掺杂的碳纳米管纤维(NC@CNTF)表面进行结构分析。结果表明:氮掺杂碳层的界面改性高效调节了CNTF表面浸润性,导致CNTF和Cu之间强的耦合作用;通过界面优化和调控电流密度大小,实现了Cu@NC@CNTF复合纤维的可控制备和性能改善,Cu@NC@CNTF的电导率和比电导率分别达到了3.06×10^(7)S/m和7571.48 S·m^(2)/kg;这种超亲水的Cu@NC@CNTF基复合材料为制造轻质、高导电性的工业级新型供电导线提供了思路。Highly conductive copper-carbon nanotube fiber composites(Cu@NC@CNTF)were synthesized using carbon nanotube fibers(CNTF),dopamine hydrochloride,and copper sulfate pentahydrate as raw materials by sequential processes of immersion,heat treatment,and electrochemical deposition.The surface of the composite fibers was morphologically characterized by field emission scanning electron microscopy,and the surface of the nitrogen-doped carbon nanotube fibers(NC@CNTF)was structurally analyzed by X-ray photoelectron spectroscopy and small-angle X-ray scattering station.The interfacial modification of the nitrogen-doped carbon layer efficiently regulated the surface wettability of CNTF,leading to a strong coupling between CNTF and Cu.The controllable preparation and performance improvement of Cu@NC@CNTF composite fibers were achieved through interfacial optimization and regulation of current density magnitude,and the electrical conductivity and specific conductivity of Cu@NC@CNTF reached 3.06×10^(7)S/m and 7571.48 S-m^(2)/kg,respectively.This super hydrophilic Cu@NC@CNTF-based composite material provides an idea for ideas for manufacturing new industrial grade power supply conductors with light weight and high electrical conductivity.

关 键 词：碳纳米管纤维 铜-碳纳米管复合纤维 氮掺杂 界面改性 电导率 

分 类 号：TB333[一般工业技术—材料科学与工程]