Microscale Ionic Diodes: An Overview

Budi Riza Putra Putra, Luthando Tshwenya, Mark A. Buckingham, Jingyuan Chen, Koichi Jeremiah Aoki, Klaus Mathwig, Omotayo Arotiba, Abigail Thompson, Zhongkai Li, Frank Marken

Research output: Contribution to journalReview articlepeer-review

15 Citations (SciVal)
46 Downloads (Pure)


Ionic rectifier membranes or devices generate uni-directional ion transport to convert an alternating current (AC) ion current input into stored energy or direct current (DC) in the form of ion/salt gradients. Electrochemical experiments 80 years ago were conducted on biological membrane rectifier systems, but today a plethora of artificial ionic rectifier types has been developed and electroanalytical tools are employed to explore mechanisms and performance. This overview focuses on microscale ionic rectifiers with a comparison to nano- and macroscale ionic rectifiers. The potential is surveyed for applications in electrochemical analysis, desalination, energy harvesting, electrochemical synthesis, and in selective ion extraction.
Original languageEnglish
Pages (from-to)1398-1418
Number of pages21
Issue number6
Early online date9 Mar 2021
Publication statusPublished - 30 Jun 2021


  • electrolytic devices
  • iontronics
  • lab-on-a-chip.
  • nanofluidics
  • voltammetry

ASJC Scopus subject areas

  • Analytical Chemistry
  • Electrochemistry


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