Two-dimensional nanosheets such as graphene have the potential to be used in various applications from electronics to energy storage. Manufacturing processes that are high-yield, high-throughput, and low-cost are required to produce high-performing devices.
In Advanced Functional Materials, Prof. Young-Kyu Han from Dongguk University-Seoul, Prof. Bong Gill Choi from Kangwon National University, and Prof. Do Hyun Kim from Korea Advanced Institute of Science and Technology (KAIST), and their co-workers present a versatile and scalable hydraulic power process for large-scale, 2D nanosheet production.
A new top-down approach using ionic-liquid-assisted Taylor–Couette flow and colloidal suspensions of 2D nanosheets in water enables rapid mass production of 2D nanosheets.
The flow process exhibits uniform sheer rates and efficient mass transfer to produce high yields with high concentrations that can remain stable for more than a year.
To further illustrate the stability of the dispersions and to demonstrate their applicability as an ink, electric circuits were printed onto paper using an inkjet printer. The conductivity of the ink is demonstrated by creating a successful circuit with a battery to power a blue light-emitting diode.