High-Temperature Anion Exchange Membrane Water Electrolysis
Abstract
High Resolution Image Download MS PowerPoint Slide While the low-temperature (50–80 °C) anion-exchange membrane water electrolysis (AEMWE) field is blooming, the potential for cell operation above 100 °C remains unexplored. Hereafter, we show the first high-temperature AEMWE (HT-AEMWE) cell operating at 110 °C under dry cathode operations with platinum-group metal-free catalysts. Increasing temperature strongly enhances OH – conductivity (119–216 mS/cm at 50–95 °C), water diffusivity (∼6.0-fold at 30–70 °C), and oxygen and hydrogen evolution reaction kinetics (∼30- and ∼6.0-fold increases, at 10–70 °C), altogether translated into substantial cell-level performance gains. The KOH aq -fed HT-AEMWE reaches >5 A/cm 2 at
Fields of Study & Subjects
Fuel Cells and Related Materials
Membrane-based Ion Separation Techniques
Electrocatalysts for Energy Conversion
Publication details
- Journal / source
- ACS Energy Letters
- Publisher
- American Chemical Society (ACS)
- Volume
- 11
- Issue
- 2
- Pages
- 2257–2264
- Publication date
- 16 January 2026
- Language
- EN