Calculation of the space charge in electrodeposition from a binary electrolyte

Stabilizing electrochemical interfaces in viscoelastic liquid electrolytes

“…Mixing also enhances the efficiency of processes, such as electrodialysis, that rely on fast ion transport to ion-exchange membranes ( 13 – 15 , 17 , 22 – 26 ) or electrodeposition at battery electrodes ( 27 ), which requires large ionic currents to support high-power operations. In many other situations, including electroplating and emergent secondary batteries that use reactive metals (for example, lithium, sodium, and aluminum) as anodes, the instabilities are problematic because they produce complex flows that cause formation of rough, ramified metal electrodeposits known as dendrites at planar interfaces ( 12 , 16 , 18 , 21 , 28 ).…”

Morphological instability during steady electrodeposition at overlimiting currents

“…For this reason, the electrodeposition rate can be driven to exceed the diffusion limit, at which point the system enters a nonlinear regime not encountered in the purely diffusion-driven systems. One of the features of this nonlinear regime is the development of a nonequilibrium space-charge region, which extends from the cathode into the electrolyte [12,[14][15][16]. This extended space-charge region significantly affects the transport in the system, and it is a central component in the well-known electroosmotic instability [17][18][19].…”

Quantitative phase-field modeling of dendritic electrodeposition

“…Due to the complexity of observed deposition patterns [2][3][4][5], a complete theoretical understanding of the formation of dendrites from binary electrolytes has not been developed. Modeling of electrodeposition has largely focused on analysis of diffusion equations without consideration of morphology [6][7][8][9][10], or variations of diffusion limited aggregation [1,11] which are applicable only at the limit of very small currents, and which do not account for surface energy.…”