Enhanced-Ion Transfer via Metallic-Nanopore Electrodes

초록

Improving ion transfer is one of the key factors to store energy effectively. This research examines the feasibility using nanopore structured electrodes to enhance ion transportation. Nickel based, highly ordered, self-organized metallic-nanopore electrodes (MNE) were fabricated through two simple steps: anodization and E-beam deposition. The kinetics of ion transfer was studied using Electrochemical Impedance Spectroscopy (EIS) and Cyclic Voltametry (CV). It was found that transportation of ions depends on a parameter called effective surface area (ESA, or Gamma). This parameter is a universal extrinsic factor found to be useful when comparing different surfaces. It can be used to predict the electrochemical reaction behavior. Increasing ESA leads to the increase in total surface area of a material which affects for ion transfer, and vice versa. The ESA is a critical dimensional factor of nanopores that can be used to optimize energy storage. (C) 2014 The Electrochemical Society. All rights reserved.

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