Publications by authors named "Ki Ryuk Bang"
Article Synopsis
- Reverse electrodialysis (RED) utilizes salinity gradients to produce renewable energy, with ion exchange membranes playing a crucial role in its efficiency.
- Graphene oxide (GO) membranes show promise due to their ionic selectivity and conductivity, but they face challenges like high internal resistance and instability in water.
- The study presents a new RED membrane using epoxy-confined asymmetric GO nanochannels, improving ion transport and stability, achieving up to 5.32 W·m and over 40% energy conversion efficiency, while suggesting a model for better membrane designs.
Two-dimensional (2D) membranes enable ion-sieving through well-defined subnanoscale channels. In particular, graphene oxide (GO), a representative 2D material with a flexible structure, can be manufactured into various types of membranes, while defects such as pores and wrinkles are readily formed through self-aggregation and self-folding during membrane fabrication. Such defects provide a path for small ionic or molecular species to be easily penetrated between the layers, which deteriorates membrane performance.
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