In this study we covalently attached polyacrylic acid (poly(AAc))
to the surfaces of activated carbon fiber cloth (AC) and the hydrophobic polypropylene membrane (PP), using the plasmainduced
grafting technique, to produce hydrophilic and readily
wettable electrodes and separator materials by aqueous electrolytes.
This modification is proposed to enhance the capacitance
of AC electrodes. Finally, the performance of a double layer
capacitor using these modified components and saturated lithium
hydroxide as electrolyte is discussed