Double-layer charging/discharging

In this respect, this review provides a comprehensive survey of synthetic methods and physicochemical properties of the porous carbon materials. Furthermore, as electrochemical applications of the porous carbons to electrode materials for supercapacitor, the effects of geometric heterogeneity and surface inhomogeneity on ion penetration into the pores during double-layer charging/ discharging are discussed in detail by using ac-impedance spectroscopy, current transient technique, and cyclic voltammetry. 

Effect of Geometric Heterogeneity on Ion Penetration into the Pores during Double-Layer Charging/Discharging... 

The rate capability yoap defined as the quotient of the reduced charge for the ACFCE divided by the reduced charge for the ideal double layer capacitor increased with increasing o of PLD, as shown in Figure 12. Consequently, from the above theoretical and experimental results, it is concluded that the ion penetration into the pores during double-layer charging/discharging is more impeded as o of PLD increases. 

Recently, Lee et al. investigated the effect of PLD on the kinetics of double-layer charging/discharging of the activated-carbon fiber cloth electrode (ACFCE). In order to disregard the effect of the pore shape on the electrochemical performance of the electrode, they used the ACFCE as an electrode material since the shape of the pores comprising the activated caibon fiber is cylindrical and homogeneous throughout the bulk of the fiber ... 

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