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Operando Probing of Electrochemical Reactions At Triple-phase-boundaries

Project description

High-capacity electrocatalysts scaling clean fuel production

Scaling up the electrochemical technology needed to turn waste emissions into green fuels remains the primary obstacle to its commercial production. While laboratory electrocatalysts perform well in idealised, low-power tests, they frequently fail when transferred to high-capacity, commercial electrolysers. The ERC-funded OPERATE project will help tackle this by analysing complex chemical reactions under realistic, high-current industrial conditions. To this end, researchers will design advanced X-ray spectroscopy techniques to peek inside the hidden triple-phase boundaries where gas, liquid and solid catalysts interact. Using ultrathin nanoporous membranes to keep the liquids and gases separate, the team will reveal exactly how atomic structures drive hydrogen and CO2 conversion, enabling the rapid design of cheap, mass-producible catalysts.

Objective

Electrochemical conversion is central to the net-zero transition, enabling hydrogen production from renewable energy and water, and the transformation of waste CO2 into valuable fuels and chemicals. However, these multi-step reactions take place at triple-phase boundaries which are challenging to experimentally access, limiting our understanding and thus ability to rationally design improved electrocatalysts. OPERATE will deliver new capabilities to observe the chemical state, intermediate species and underlying reaction mechanisms at these triple-phase boundaries under realistic reaction conditions, to inform the development of earth-abundant electrocatalysts for sustainable chemical production. Operando X-ray spectroscopy approaches will be developed to observe solid-liquid and solid-gas boundaries under high current-density and mass-transport regimes, using nano porous membranes to separate liquid and gas phases. Combinatorial screening of multicomponent nanoparticles, combined with high throughput electrochemical testing will enable mapping of the electrochemical and compositional parameter space such that operando characterisation can obtain the most detailed mechanistic insights. Control of composition, phase and size of multicomponent nanoparticles will tune the extent to which lattice oxygen participates in the oxygen evolution reaction, and the presence of synergistic sites to guide CO2 reduction towards desired products. In contrast to previous approaches, electrolyser-relevant current densities and mass-transport regimes will be used throughout the catalyst screening process to ensure translation to scaled-up devices, which will be confirmed using advanced operando studies with newly developed zero-gap electrolyser formats. OPERATE will thereby accelerate the development of electrocatalysts for gas-evolving and gas-consuming reactions, by revealing and understanding the underlying reaction mechanisms to inform rational catalyst design.

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HORIZON-ERC - HORIZON ERC Grants

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Call for proposal

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(opens in new window) ERC-2025-COG

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Host institution

THE CHANCELLOR, MASTERS AND SCHOLARS OF THE UNIVERSITY OF OXFORD
Net EU contribution

Net EU financial contribution. The sum of money that the participant receives, deducted by the EU contribution to its linked third party. It considers the distribution of the EU financial contribution between direct beneficiaries of the project and other types of participants, like third-party participants.

€ 2 323 800,00
Address
WELLINGTON SQUARE UNIVERSITY OFFICES
OX1 2JD Oxford
United Kingdom

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Region
South East (England) Berkshire, Buckinghamshire and Oxfordshire Oxfordshire
Activity type
Higher or Secondary Education Establishments
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Total cost

The total costs incurred by this organisation to participate in the project, including direct and indirect costs. This amount is a subset of the overall project budget.

€ 2 323 800,00

Beneficiaries (1)