Jerzy Haber Institute of Catalysis and Surface Chemistry Polish Academy of Sciences, Niezapominajek 8, 30-232 Kraków, Poland.
Nanotechnology. 2019 May 31;30(22):225301. doi: 10.1088/1361-6528/ab0467. Epub 2019 Feb 5.
Conductive inks based on nickel nanoparticles (NPs) have attracted much attention as a low-cost replacement for the currently used silver and gold inks, for fabrication of printed electronic circuits and devices. Nickel NPs as a component of conductive inks should be stable against oxidation process at all stages of preparation of conductive patterns: ink formulation and storage, printing, and post-printing treatment. In the present study, the oxidation resistance of the Ag layer and the conductive properties of the Ni core allowed the use of nickel-silver core-shell (Ni@Ag) NPs as the component of conductive ink. Thick films composed of Ni-Ag core-shell NPs were deposited on a glass substrate and then sintered at temperatures ranging from 250 °C-370 °C. The conductivity of Ni@Ag coatings after sintering at 350 °C reached 11% of that for a bulk nickel.
基于镍纳米粒子 (NPs) 的导电油墨作为目前使用的银和金油墨的低成本替代品，吸引了人们的广泛关注，可用于制造印刷电子电路和器件。镍 NPs 作为导电油墨的组成部分，在制备导电图案的各个阶段（油墨配方和储存、印刷以及印刷后处理）都应稳定，不易被氧化。在本研究中，Ag 层的抗氧化性和 Ni 核的导电性能使得镍-银核壳 (Ni@Ag) NPs 可用作导电油墨的组成部分。将镍-银核壳 NPs 组成的厚膜沉积在玻璃基板上，然后在 250°C-370°C 的温度范围内进行烧结。在 350°C 下烧结后，Ni@Ag 涂层的电导率达到块状镍的 11%。
