| 초록 |
The rational design and realization of revolutionary porous structures have been longstanding challenges in membrane science. Here, we demonstrate a new class of amphiphilic polystyrene-block-poly(4-vinylpyridine) block copolymer (BCP)-based porous membranes featuring hierarchical multiscale hyperporous structures. The introduction of surface-energy-modifying agents and control of major phase separation parameters enable tunable dual-phase separation of BCPs, eventually leading to macro/nanoscale porous structures and chemical functionalities. Application of this BCP membrane to a lithium-ion battery separator affords exceptional improvement in electrochemical performance. The dual-phase separation-driven macro-/nanopore construction strategy, owing to its simplicity and universality, is expected to be readily applicable to a rich variety of membrane fields including molecular separation, water purification, and energy-related devices. |
