Preparation Of Silver Nanowires With Different Aspect Ratios And Their Applications In Flexible Conductive Inks

The development of flexible electronics has entered every corner of our lives.The function of flexible electronic devices cannot be implemented without excellent conductors.The existing conductive ink has some disadvantages,such as poor bending resistance,an unfriendly solvent environment and the coffee ring effect.silver nanowires(AgNWs)have the characteristics of high conductivity and high flexibility.Therefore,it has become a common filler for flexible conductive inks.However,the application and preparation conditions of small aspect ratio AgNWs in flexible devices are rarely studied,and the application range of transparent conductive films prepared by large aspect ratio AgNWs needs to be expanded.In this paper,the synthesis conditions of AgNWs with different aspect ratios were studied.A water-based conductive ink which can overcome the coffee ring effect and can be used in ordinary printers was prepared.An integrated electrode circuit was prepared by an office printer to judge the unbalanced direction of intelligent robot.The conditions for the preparation of flexible transparent conductive films by AgNWs with large aspect ratio were studied and their application in flexible color-changing glass was explored.In this paper,AgNWs with an average length of 1.3 μm were synthesized,which significantly weakened the coffee ring effect in the printing process and made it possible to use AgNWs conductive ink in office printers.The flexible electrode prepared by ink-jet printing has high conductivity and excellent mechanical properties,and the resistance changes little after bending for 50 thousand times.It is applied to the triboelectric nanogenerator(TENG)to make flexible electrode circuits,and the unbalanced direction of the robot is successfully monitored.The experimental conditions of preparing AgNWs with large aspect ratio were determined by polyol method,and the maximum aspect ratio could reach 2097.Flexible transparent conductive films with excellent photoelectric properties were prepared by filtration-transfer method,and the square resistance was as low as 18.7 Ω/sq when the transmittance was 83%.Using electrodeposition technology to deposit centennial color materials on thin films is more efficient than commercial ITO,which provides a new direction for the development of flexible intelligent color-changing glass.