摘要
高性能导电墨水的研究与开发是实现印刷电子器件不断发展的关键。石墨烯的二维结构使其本身具有良好的柔性和导电性,但由于片层间范德华力的相互作用使其容易发生团聚和堆积,通过复合的方式引入金属纳米粒子,既可以防止发生团聚又可以降低石墨烯片层间的接触电阻,使复合材料的导电性增强。鉴于此,本工作采用原位化学还原的方法制备石墨烯(rGO)和银纳米粒子(AgNPs)组成的复合墨水,以实现AgNPs在rGO纳米片层上的均匀分布。通过直写打印技术将墨水打印在基底上,得到的印刷图案具有优异的导电性,典型的电阻率为1.48×10^(-6)Ω·m。经过数百次弯曲循环后,印刷图案的电阻值仅略有增加,表明图案具有极佳的稳定性和机械柔韧性。这对于印刷电子器件的发展具有重要意义。
The research and development of high-performance conductive inks is the key to realize the continuous development of printed electronics.The two-dimensional structure of graphene makes it inherently flexible and conductive,but it is prone to agglomeration and stacking due to the interaction of van der Waals forces between the lamellae,and the introduction of metal nanoparticles through the composite approach can prevent agglomeration from occurring as well as reduce the contact resistance between graphene lamellae,so as to make the conductivity of the composite material enhanced.in this work,composite inks consisting of graphene(rGO)and silver nanoparticles(AgNPs)were prepared by in-situ chemical reduction to achieve a uniform distribution of AgNPs on rGO nanosheets.The ink was printed on the substrate by direct writing printing technique,and the resulting printed pattern has excellent electrical conductivity with a typical resistivity of 1.48×10^(-6)Ω·m.After hundreds of bending cycles,the resistance value of the printed pattern increases slightly,indicating that the patterns have excellent stability and mechanical flexibility.This is of great significance for the development of printed electronics.
作者
张薛安
马颖
安博星
李思仪
Zhang Xue′an;Ma Ying;An Boxing;Li Siyi(School of Materials Science and Engineering,Shenyang Jianzhu University,Shenyang 110168,China)
出处
《山东化工》
CAS
2024年第15期46-49,共4页
Shandong Chemical Industry
关键词
印刷电子
大尺寸氧化石墨烯
银纳米粒子
复合墨水
直写打印
printed electronics
large size graphene oxide
silver nanoparticle
composite ink
direct writing printing
