Microstructure and electrical conductivity of laminated Cu/CNT/Cu composites prepared by electrodeposition
Microstructure and electrical conductivity of laminated Cu/CNT/Cu composites prepared by electrodeposition
复制标题
电沉积制备层状Cu/CNT/Cu复合材料的显微结构和电导率
DOI：
10.1016/j.jallcom.2017.05.074
复制
发表时间：
2017
影响因子：
6.2
通讯作者：
Yi J. H.
中科院分区：
文献类型：
--
作者：
Tao J. M.;Chen X. F.;Hong P.;Yi J. H.
以碳纳米管（CNT）薄膜为模板，在不同的镀液中电沉积Cu，制备了Cu/CNT/Cu层状复合材料。复合材料的微观结构表明，Cu核可以嵌入到碳纳米管薄膜的孔隙中，并在碳纳米管薄膜和Cu涂层之间形成界面过渡层。分析了不同镀液中Cu在碳纳米管薄膜上的电沉积行为。电导率测试结果表明，退火前在碱性酸性镀液中制备的层状复合材料的电导率最高。经900 ℃退火2h后，所有试样的电导率均迅速增加，在碱性酸性镀液中制备的复合材料的电导率增加到2.02 × 105S·cm-1。退火过程有利于界面过渡层内空洞的扩散和湮灭，同时退火还可以释放电镀过程中产生的内应力。提出了一种简单而精确的准经典模型来计算复合材料层合板的阻力。四探针法测得的复合材料电阻值与计算值比较接近，表明本文所建立的描述叠层复合材料电阻的模型是可行的。
Carbon nanotube (CNT) films were used as template for electrodeposition of Cu in different plating bath, and laminated Cu/CNT/Cu composites were prepared. The microstructure of all the laminated composites showed that Cu nucleus could insert into the pores of the CNT film, and formed an interfacial transition layer between the CNT film and the Cu coating. The electrodeposition behaviors of Cu on the CNT films in different plating baths were also analyzed. The results of electrical conductivity test showed that before annealing, the laminated composite prepared in basic acid plating bath has the highest electrical conductivity. After annealing at 900℃ for 2h, the electrical conductivity of all specimens increased rapidly, and the electrical conductivity of the composite prepared in basic acid plating bath increased to 2.02×105 S·cm-1. The annealing process was conductive to the diffusion and annihilation of voids within the interfacial transition layer, and the internal stress produced during the electroplating process could also be released through annealing. A simple and accurate quasi-classical model was proposed to calculate the resistance of the laminated composites. The measured resistances of the composites using four-point probe method were closer to that of the computed values, which indicated that the model used to describe the resistance of the laminated composite in the present study is feasible.