Effect of Doping Conduction Enhancement on the Performance of Aluminum Electrode
WANG Chong1, ZHU Xiaoyun1,2, LONG Jinming2
1 School of Materials Science and Engineering, Kunming University of Science and Technology, Kunming 650093, China 2 Kunming Guixinkai Technology Co., Ltd., Kunming 650039, China
Abstract: Doped with different contents of graphene, carbon nanotubes, nano silver, silver-coated aluminum powder as the conductive reinforcement phase to prepare aluminum paste, printed it on a zinc oxide substrate and sintered at 680 ℃ to obtain aluminum electrodes, and studied the different conductive enhanced The effect of electrode conductivity and performance. The square resistance of the aluminum electrode was measured by the four-probe method, and the adhesion of the aluminum electrode was measured by a tensile tester using a secondary sintered silver electrode. The metallographic microscope, scanning electron microscope (SEM), X-ray diffractometer (XRD) and other methods were used to characterize the fiber structure, morphology and composition of the aluminum electrode doped with conductive enhanced phase. The results show that the doping content of carbon nanotubes and graphene is better at 1% and 2%, respectively. Higher than 1.5% and 3% will destroy the surface morphology of aluminum electrode, aluminum electrode has poor conductivity and low adhesion. The effect of doped nano-silver is the best, the surface of the aluminum electrode is smooth and smooth, the tissue is dense and uniform, the metal silver, and the average square resistance was determined to be 0.22 Ω/□, and the adhesion to the zinc oxide substrate reached 8.9 N/mm2. At the same time, in order to determine the stability of the aluminum electrode, the resistance change rate of the aluminum electrode doped with different conductive reinforcing phases was measured experimentally at room temperature for 60 days. The results show that the changes in the ambient temperature of each group of aluminum electrodes are relatively small. The resistance change of the aluminum electrode doped with nano-silver is a minimum of 0.98%; the resistance change of the aluminum electrode doped with carbon nanotubes is a maximum of 1.52%.
汪冲, 朱晓云, 龙晋明. 掺杂导电增强相对铝电极性能的影响[J]. 材料导报, 2021, 35(8): 8082-8087.
WANG Chong, ZHU Xiaoyun, LONG Jinming. Effect of Doping Conduction Enhancement on the Performance of Aluminum Electrode. Materials Reports, 2021, 35(8): 8082-8087.
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2021, Vol. 35 
