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Advanced Metrology for Polymer Electrolysers - AMPERE

Lead Research Organisation: UNIVERSITY COLLEGE LONDON
Department Name: Chemical Engineering

Abstract

Hydrogen will play a central role in the clean economy and in meeting ambitious climate targets. However, to realise its full potential, we must enable low cost, widespread production of zero-carbon H2 by water electrolysis, powered using renewable energy. Underlying this challenge is improved understanding of these complex systems from atoms to cells under real world operating conditions. AMPERE brings together experts from academia, national laboratories and industry to diagnose and understand degradation and performance-limiting processes in electrolysers. Crucially, this project will address the effects of system dynamics, a key but often overlooked aspect of operation when using intermittent energy sources such as solar and wind.

We will leverage a unique toolbox of state-of-the-art measurement techniques, spanning length scales from ionic motion in the polymer membrane, to local electrochemical activity across electrode assemblies, water management and bubble formation. This will produce the definitive picture of multi-scale electrolyser dynamics and our focus on realistic production rates and in-situ/operando methods will ensure these insights will have practical relevance. Thus, the outputs of AMPERE will help usher in zero-carbon H2 at scale, as a chemical feedstock and energy vector for clean power generation, heating and transportation.

Publications

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Smith K (2024) A Proton Selective Carbon Nitride Layer for High Durability Fuel Cells in Advanced Functional Materials

 
Description Causes for electrolyser degradation were studied and unveiled by developing enhanced cells that allow for each individual electrode to be studied separately. Fundamental aspects of how water and proton transport happen in the membranes were studied using advanced neutron techniques. Novel operando x-ray imaging (CT) cell was developed, allowing for assessment of degradation such as membrane thinning, catalyst layer degradation over time after ageing in the lab and periodic imaging.
Exploitation Route Set of recommended testing procedures could be developed by metrology bodies to standardise testing. Cell designs are available for others to be able to perform more extensive imaging experiments. Neutron scattering techniques to study properties of membranes could be used by those developing novel membranes in the future.
Sectors Energy

 
Description UCL-Imperial XAS 
Organisation Imperial College London
Country United Kingdom 
Sector Academic/University 
PI Contribution Collaboration on operando XAS experiments in Diamond Lightsource, valued at £8k per day
Collaborator Contribution Collaboration on operando XAS experiments in Diamond Lightsource and contribution of electrolyser catalysts
Impact Beamtime experiments at diamond Lightsource
Start Year 2022