| 초록 |
Capacitive deionization (CDI) technology has attracted much attention due to its high energy efficiency compared to conventionally utilized reverse osmosis and distillation technologies. However, due to a couple of issues including cost and requirement for a disruptive discharging step, it has been regarded as a challenging task to perform large-scale desalination of seawater by the CDI process. We report a novel design for a 3D desalination system utilizing porous lattice scaffolds. By coating of Ion Exchange Membranes (IEM) and a conducting current layer inside each channel of the lattice structures, 3D desalination cells could be realized. However, since the channel walls of such porous 3D structure are filled with IEM during IEM coating, feed water cannot flow through the channel walls. Herein, in order to prevent such pore blocking, we utilized SiO2 nanoparticles and polymer multilayer film. By coating them onto the porous structure, the penetration of IEM into the water channel could be prevented. Therefore, 3D desalination cell was successfully realized. We believe that the present study gives a new insight for a large-scale desalination technology. |
