Synthesis of Ni Nanosheets by Template-Free Method and Their Application in Conductive and Magnetic Flexible Electrons

Two-dimensional Ni nanosheets are synthesized by thetemplate-freemethod using Na(3)CA as an orientation agent in liquid phase,and then the conductive Ni nanosheet ink is prepared for conductivecircuits on flexible electronics. The thickness of the Ni nanosheetsis about 800 nm, and the diameter is about 100 & mu;m. Na(3)CA plays a structural guiding role to form Ni nanocrystals, promotingthe self-assembly of Ni nanocrystals into Ni nanosheets effectively.The laminar stackable patterns of the Ni nanosheet circuits increasethe contact area of the Ni nanosheets and improve the stability ofthe conductors under stress. Ni nanosheets can bend with the foldingof the structure, while the mutual constraints between their layerspromote the circuit to remain stable during the bending state. Therefore,the Ni nanosheet circuits display excellent conductive performanceduring the tiled and bent stages. In addition, Ni nanosheet/Ag nanowirecomposites are prepared to enhance conductivity to meet higher demands.Moreover, the experimental results of its application in magneticguided switch closure circuits show that Ni nanosheet/Ag nanowirecomposites have the potential to participate in both conductive andmagnetic field applications simultaneously.