Suppression of dendrite growth in electrochemical reactions based on modeling of growing interfaces

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Suppression of dendrite growth in rechargeable batteries was studied. We have found that hydrophobic porous electrodes such as porous silicon lead to an extreme enhancement of electrodeposition within the porous structures. With an aid of the statistical-mechanical theory, it has been revealed that the surface concentration of metal ions was greatly enriched when the surface shows hydrophobic property. The growth of dendrites in electrodeposition was strongly suppressed when using porous silicon as a host matrix. This result originates from a high current efficiency even when applying a current density much higher than the limiting current.