Journal
MATERIALS LETTERS
Volume 240, Issue -, Pages 144-146Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.matlet.2018.12.141
Keywords
AEM water electrolysis; Non-precious catalysts; Hydrogen production; para-Polybenzimidazole; Potassium hydroxide
Funding
- Bulgarian Science Fund [DFNI E02/9]
- Bulgarian Ministry of Education and Science [DO1-160-/28.08.2018]
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In the present communication we report the electro catalytic performance of non-precious monometallic catalysts (Ni and Co), synthesized by sol-gel method and homogeneously dispersed on titanium sub-oxide carrier. Morphology and surface structure of the catalysts were studied. Membrane electrode assemblies (MEA) with anion exchange membrane (AEM), comprising para-polybenzimidazole, highly doped with potassium hydroxide, were prepared using these catalysts. The MEA electrochemical performance and catalytic activity toward the hydrogen and oxygen evolution reactions (HER and OER) are investigated in a self-designed electrolysis test cell. The results obtained show low overpotentials for both OER and HER compared to a MEA with Pt catalyst and the same membrane, as well as stable performance in the temperature range up to 80 degrees C. The current density reaches 0.2 A.cm(-2) at cell voltage of 2.0 V. (C) 2019 Elsevier B.V. All rights reserved.
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