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Alkaline ELectrolysis - Innovative materials and Operating Systems to boost efficiency and durability under dynamic operation

Project description

High-efficiency alkaline electrolysers to boost hydrogen production

Advancing electrolyser technology is key to making hydrogen production more efficient. The EU-funded AELIOS project plans to design a highly efficient alkaline electrolyser that can operate flexibly with renewable energy sources. Researchers will use advanced materials, namely 3D-structured nickel-based electrodes and coatings for stack and balance-of-plant components. Operational strategies and lifetime modelling tools will be developed to optimise efficiency and durability and reduce degradation rates. The final component will be tested under real-world conditions, including variable loads, targeting 3 000 hours of operation with minimal component wear. Overall, AELIOS aspires to play a pivotal role in reaching net-zero CO2 emissions by 2030.

Objective

The AELIOS project is focused on designing a robust and sustainable Alkaline Electrolyser with improved efficiency, capable of operating flexibly in conjunction with renewable energy sources, while also lowering both CAPEX and OPEX. To reach this goal, the project will address multiple key areas: the development of advanced materials for the stack and balance of plant (BoP) components, the implementation of innovative operational strategies, the creation of new lifetime modelling tools, the definition of accelerated ageing and degradation testing protocols, and the investigation on the sustainability, circularity and recyclability of the innovative materials and components. Highly efficient 3-D structured electrodeposited Ni based electrodes, compact and well adherent BPPs coatings, and novel operation strategies will enable overall stack performance of 1A/cm2 at 48 kWh/kg efficiency at system level. Elongated durability of the electrodes, BPPs and BoPs, will allow to reduced components degradation below 0.10%/2000 h.
The best performing components and strategies developed and tested during the project will be incorporated in the final AELIOS stack prototype, which will be tested under relevant conditions, including steady state operation and operation under variable loads, targeting 3000h.
Overall, the AELIOS project seeks to contribute significantly to achieving the net-zero CO2 target by 2030, fostering a sustainable and clean-energy future.

Fields of science (EuroSciVoc)

Keywords

Programme(s)

Topic(s)

Funding Scheme

HORIZON-JU-RIA - HORIZON JU Research and Innovation Actions

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Call for proposal

(opens in new window) HORIZON-JU-CLEANH2-2025

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Coordinator

FUNDACION TECNALIA RESEARCH & INNOVATION
Net EU contribution
€ 1 308 044,96
Address
PARQUE CIENTIFICO Y TECNOLOGICO DE GIPUZKOA MIKELETEGI PASEALEKUA 2
20009 DONOSTIA/SAN SEBASTIAN
Spain
Region
Noreste País Vasco Gipuzkoa
Activity type
Research Organisations
Links
Total cost
No data

Participants (6)