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Surface Charge and Debye Layer Capacitance

The Debye layer acts as a capacitor since it contains electric charges due to the potential difference C between the surface and the bulk. One way to obtain the capacitance of the Debye layer is by integrating the charge density p ix) along thex-direction from the surface atx = 0 [Pg.230]

Using the Poisson equation and the potential distribution, 0 (equations (6.65) and (6.66)), [Pg.230]

The resulting which is the charge per area A that is contained in the liquid in the direction perpendicular to any small area A on the surface, can be written as [Pg.230]

The basic definition of capacitance is that it is equal to the amount of charge, Q, stored in between two plates for a potential difference or voltage, V, across the two plates [Pg.230]

From this linear relation (equation (6.67)) between charge per area and applied potential difference, we can immediately read off the capacitance per area C of the Debye layer in thermal equilibrium as [Pg.231]


See other pages where Surface Charge and Debye Layer Capacitance is mentioned: [Pg.230]   


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Surface capacitance

Surface charge

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Surface charges surfaces

Surface charging

Surface layers

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