| 초록 |
Conventional hydrophobic binders (e.g., PvdF, Nafion) used in seawater batteries can cause various problems such as unstable charge-discharge reaction and low performance due to low wettability toward seawater. The hydrophilic adhesive polymer binder is achieved via using three moieties; (i) dopamine methacrylamide (DMA) as an adhesive moiety, (ii) Poly(ethylene glycol) (PEG) as a hydrophilic moiety, and (iii) Poly(ethylene glycol) diacrylate (PEGDA) to prevent polymer binder from dissolving into seawater. The adhesion forces of polymer binders containing catechol, phenol, and benzene group against carbon felt are measured by using a surface force apparatus (SFA). Synthesized catechol-hydrophilic binder exhibited enhanced wettability toward seawater which resulted in high power (16.0 mW), charge-discharge cycling stability compared to typical hydrophobic binder, PvdF. |
