| 초록 |
Elongating the cycle stability has been the holy grail of all secondary ZAB research. While much of the precedent work has been focused on developing catalysts for the air cathode and indeed, found thirst quenching success, not much attention has been focused on separators and extracting their potential. The control of zincate ions is a major factor in durability. In this aspect, former membranes which are widely used in research is insufficient. The micropores of the commercial membrane allow nonspecific flow of ions, thus results in zincate migration which deteriorates the cathode by ZnO formation or decreases the conductivity of the separator/electrolyte. By applying a coating of PEBIH-PBMA polymer, we eliminate existing pores while conserving the ionic conductivity of the membrane. This allows selective hydroxyl ion transportation and limits the free diffusion of zincate ion by the preferred solubility of hydroxyl ions in the ionic liquid copolymer and the size exclusion effect. |
