468120 Surface Transport in Charged Porous Media
A new model that describes ion transport by bulk and surface transport inside charged porous carbon electrodes is proposed to simulate the CDI process. A general treatment of bulk and surface transport processes is presented in terms of the method of volume averaging. In addition to the spatial-averaging theorem, the analysis requires the surface-averaging theorem plus a closure scheme. The closure problem is formulated and transport parameters are calculated using Chang’s unit cells. The influence of surface migration terms is also discussed. The derived transport equations lead to well-known results in the case of non-charged materials.