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Related Experiment Video
Updated: Jan 21, 2026

Tuning a Parallel Segmented Flow Column and Enabling Multiplexed Detection
Published on: December 15, 2015
Analytical electrolyzer enabling operando characterization of flow plates.
Danika G Wheeler1, Carolyn N Virca2, Curtis P Berlinguette1
1Department of Chemical and Biological Engineering, The University of British Columbia, 2360 East Mall, Vancouver, British Columbia V6T 1Z3, Canada.
This study introduces an analytical water electrolyzer with embedded sensors for real-time measurement of electrolyte temperature and pressure. Findings reveal how flow plate design impacts these critical operating parameters.
Area of Science:
- Electrochemistry
- Chemical Engineering
- Materials Science
Background:
- Efficient water electrolysis is crucial for green hydrogen production.
- Understanding real-time temperature and pressure dynamics within electrolyzers is key to optimizing performance and durability.
- Current methods often lack spatially resolved operando measurements.
Purpose of the Study:
- To develop and demonstrate an analytical flow cell for direct, in-situ measurement of electrolyte temperature and pressure during water electrolysis.
- To investigate the influence of flow plate geometry on these parameters.
Main Methods:
- Integration of an anion exchange membrane and nickel foam gas diffusion layer into a flow cell.
- Embedding eight sensors within parallel and serpentine flow plates for electrolyte sensing.
- Conducting electrolysis experiments at a current density of 200 mA cm⁻².
Main Results:
- Electrolyte temperature and pressure increased by up to 7.3 °C and 11.5 kPa, respectively.
- Parallel flow plates showed a greater temperature increase.
- Serpentine flow plates exhibited higher pressure variability.
Conclusions:
- The developed analytical flow cell enables unprecedented spatially resolved operando sensing of temperature and pressure.
- Flow plate design significantly influences thermal and pressure profiles in water electrolyzers.
- This technology offers a powerful tool for advancing electrolyzer design and efficiency.

