The application of supercapacitors for energy storage is severely limited by their self‐discharging behavior. Herein, a convenient technique is reported to effectively suppress the self‐discharge of typical activated carbon‐based supercapacitors by modifying their porous cellulose separators with a cationic polyelectrolyte, polyethyleneimine. Experimental and theoretical studies indicate that polyelectrolyte modification slows the ion diffusion driven by concentration gradient, while does not sacrifice the electrochemical performances of the supercapacitors.
No takes yet. Share an insight, caveat, or question.
Wang et al. (2018) studied this question.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: