3 Citations (Scopus)
9 Downloads (Pure)

Abstract

A cationic diode is fabricated by hot-pressing a commercial cation-conducting ionomer membrane (Fumasep FKS-30) onto a polyethylene terephthalate (PET) substrate with microhole of 5, 10, 20, or 40 μm diameter. Both, symmetric (ionomer on both sides) and asymmetric (ionomer only on the working electrode side) cases are investigated in a 4-electrode measurement cell. A 5-electrode measurement cell in generator-collector mode is employed to directly detect competing proton transport through the ionomer. Only the asymmetric device allows ion current rectification to be observed. With decreasing microhole diameter the rectification effect increases. With increasing electrolyte concentration (for aqueous HCl, NaCl, LiCl, NH4Cl, MgCl2, CaCl2) the rectification effect diminishes. Competition between cation transport and proton transport is observed in all cases. A qualitative impedance model is developed to diagnose the quality and performance of these cationic diodes.
Original languageEnglish
Pages (from-to)114-122
Number of pages9
JournalJournal of Electroanalytical Chemistry
Volume815
Early online date12 Mar 2018
DOIs
Publication statusPublished - 15 Apr 2018

Fingerprint

Polyethylene Terephthalates
Ionomers
Hot pressing
Polyethylene terephthalates
Diodes
Electrodes
Cations
Protons
Positive ions
Magnesium Chloride
Electrolytes
Ions
Membranes
Substrates

Keywords

  • Desalination
  • Energy harvesting
  • Ion pump
  • Membrane
  • Transistor

ASJC Scopus subject areas

  • Analytical Chemistry
  • Chemical Engineering(all)
  • Electrochemistry

Cite this

Cationic diodes by hot-pressing of Fumasep FKS-30 ionomer film onto a microhole in polyethylene terephthalate (PET). / Marken, Frank; Tshwenya, Luthando; Arotiba, Omotayo; Putra, Budi Riza; Madrid, Elena; Mathwig, Klaus.

In: Journal of Electroanalytical Chemistry, Vol. 815, 15.04.2018, p. 114-122.

Research output: Contribution to journalArticle

@article{5de2f8b6f95c4dea8064ce36af3b9ea9,
title = "Cationic diodes by hot-pressing of Fumasep FKS-30 ionomer film onto a microhole in polyethylene terephthalate (PET)",
abstract = "A cationic diode is fabricated by hot-pressing a commercial cation-conducting ionomer membrane (Fumasep FKS-30) onto a polyethylene terephthalate (PET) substrate with microhole of 5, 10, 20, or 40 μm diameter. Both, symmetric (ionomer on both sides) and asymmetric (ionomer only on the working electrode side) cases are investigated in a 4-electrode measurement cell. A 5-electrode measurement cell in generator-collector mode is employed to directly detect competing proton transport through the ionomer. Only the asymmetric device allows ion current rectification to be observed. With decreasing microhole diameter the rectification effect increases. With increasing electrolyte concentration (for aqueous HCl, NaCl, LiCl, NH4Cl, MgCl2, CaCl2) the rectification effect diminishes. Competition between cation transport and proton transport is observed in all cases. A qualitative impedance model is developed to diagnose the quality and performance of these cationic diodes.",
keywords = "Desalination, Energy harvesting, Ion pump, Membrane, Transistor",
author = "Frank Marken and Luthando Tshwenya and Omotayo Arotiba and Putra, {Budi Riza} and Elena Madrid and Klaus Mathwig",
year = "2018",
month = "4",
day = "15",
doi = "10.1016/j.jelechem.2018.03.027",
language = "English",
volume = "815",
pages = "114--122",
journal = "Journal of Electroanalytical Chemistry",
issn = "1572-6657",
publisher = "Elsevier",

}

TY - JOUR

T1 - Cationic diodes by hot-pressing of Fumasep FKS-30 ionomer film onto a microhole in polyethylene terephthalate (PET)

AU - Marken, Frank

AU - Tshwenya, Luthando

AU - Arotiba, Omotayo

AU - Putra, Budi Riza

AU - Madrid, Elena

AU - Mathwig, Klaus

PY - 2018/4/15

Y1 - 2018/4/15

N2 - A cationic diode is fabricated by hot-pressing a commercial cation-conducting ionomer membrane (Fumasep FKS-30) onto a polyethylene terephthalate (PET) substrate with microhole of 5, 10, 20, or 40 μm diameter. Both, symmetric (ionomer on both sides) and asymmetric (ionomer only on the working electrode side) cases are investigated in a 4-electrode measurement cell. A 5-electrode measurement cell in generator-collector mode is employed to directly detect competing proton transport through the ionomer. Only the asymmetric device allows ion current rectification to be observed. With decreasing microhole diameter the rectification effect increases. With increasing electrolyte concentration (for aqueous HCl, NaCl, LiCl, NH4Cl, MgCl2, CaCl2) the rectification effect diminishes. Competition between cation transport and proton transport is observed in all cases. A qualitative impedance model is developed to diagnose the quality and performance of these cationic diodes.

AB - A cationic diode is fabricated by hot-pressing a commercial cation-conducting ionomer membrane (Fumasep FKS-30) onto a polyethylene terephthalate (PET) substrate with microhole of 5, 10, 20, or 40 μm diameter. Both, symmetric (ionomer on both sides) and asymmetric (ionomer only on the working electrode side) cases are investigated in a 4-electrode measurement cell. A 5-electrode measurement cell in generator-collector mode is employed to directly detect competing proton transport through the ionomer. Only the asymmetric device allows ion current rectification to be observed. With decreasing microhole diameter the rectification effect increases. With increasing electrolyte concentration (for aqueous HCl, NaCl, LiCl, NH4Cl, MgCl2, CaCl2) the rectification effect diminishes. Competition between cation transport and proton transport is observed in all cases. A qualitative impedance model is developed to diagnose the quality and performance of these cationic diodes.

KW - Desalination

KW - Energy harvesting

KW - Ion pump

KW - Membrane

KW - Transistor

UR - http://www.scopus.com/inward/record.url?scp=85043506201&partnerID=8YFLogxK

U2 - 10.1016/j.jelechem.2018.03.027

DO - 10.1016/j.jelechem.2018.03.027

M3 - Article

VL - 815

SP - 114

EP - 122

JO - Journal of Electroanalytical Chemistry

JF - Journal of Electroanalytical Chemistry

SN - 1572-6657

ER -