Cited by 49Membrane-based Ion Separation TechniquesFuel Cells and Related MaterialsMembrane Separation Technologies

Transparent Bipolar Membrane for Water Splitting Applications

Chabi, Sakineh, Wright, Andrew G., Holdcroft, Steven, Freund, Michael S.·2017·ACS Applied Materials & Interfaces

Abstract

This study describes the use of a benzimidazolium-based anion exchange membrane for creating bipolar membranes and the assessment of their suitability for solar-driven water splitting. Bipolar membranes were prepared by laminating anion exchange membrane with Nafion NR-211 membrane without modification of the interface. Under acidic and basic conditions, proton and hydroxide ion conductivities of 103 and 102 mS cm –1 were obtained for Nafion and benzimidazolium-based membranes, respectively. The fabricated bipolar membranes have an average thickness of 90 μm and show high transmittance, up to 75% of the visible light. The findings suggest that the two membranes create a sharp hydrophilic interface with a space charge region of only a few nanometers, thereby generating a large electric field at the interface that enhances water dissociation.

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Crossref · 10.1021/acsami.7b04402

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Authors
Chabi, S., Wright, A. G., Holdcroft, S., & Freund, M. S.
Affiliations
  • Florida Institute of Technology (US)
  • Simon Fraser University (CA)
Corresponding author
  • Holdcroft, Steven
  • Freund, Michael S.
Venue
ACS Applied Materials & Interfaces
Published
2017-08-01
Volume
9
Issue
32
Pages
26749-26755
ISSN
  • 1944-8244 (ISSN-L)
  • 1944-8252
OpenAlex
W2741461649
Cited by
49
References
45
Citations by year
2025: 4 · 2024: 6 · 2023: 8 · 2022: 3 · 2021: 10 · 2020: 12 · 2019: 3 · 2018: 3
FWCI
2.22
Type
journal article
Language
en
Open access
closed
Locations
  • ACS Applied Materials & Interfaces (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Division of Chemistry (CHE-1305124)
  • Natural Sciences and Engineering Research Council of Canada
Topics
  • Physical Sciences › Engineering › Biomedical Engineering › Membrane-based Ion Separation Techniques
  • Physical Sciences › Engineering › Electrical and Electronic Engineering › Fuel Cells and Related Materials
  • Physical Sciences › Environmental Science › Water Science and Technology › Membrane Separation Technologies
Keywords
bipolar membranes, anion exchange membranes, benzimidazolium, solar water splitting, proton conductivity, hydroxide conductivity, visible transmittance, hydrophilic interfaces, depletion region, water dissociation

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