Fundamental Research into Understanding the Molecular structure of eleKtrochemical INterfaces

Informazioni relative al progetto

FRUMKIN

ID dell’accordo di sovvenzione: 101019998

DOI

10.3030/101019998

Data della firma CE 13 Giugno 2021

Data di avvio 1 Novembre 2021

Data di completamento 31 Ottobre 2026

Finanziato da

• EXCELLENT SCIENCE - European Research Council (ERC)

Costo totale

€ 2 500 000,00

Contributo UE

€ 2 500 000,00

Coordinato da

UNIVERSITEIT LEIDEN
Netherlands

Periodic Reporting for period 2 - FRUMKIN (Fundamental Research into Understanding the Molecular structure of eleKtrochemical INterfaces)

Periodo di rendicontazione: 2023-05-01 al 2024-10-31

Sintesi del contesto e degli obiettivi generali del progetto

The Frumkin project aims to develop and formulate new models for the interface between a metal or a metal-oxide and an aqueous electrolyte solution. We address this issue by a combination of detailed electrochemical experiments, various kinds of spectroscopy and microscopy, as well as state-of-the-art (ab initio) quantum-chemical modeling.
Understanding this interface in atomic and molecular-level detail is important for the development of more efficient and durable electrolysers and batteries.

Lavoro eseguito dall’inizio del progetto fino alla fine del periodo coperto dalla relazione e principali risultati finora ottenuti

The project has started to work on the electrode-electrolyte interface of three important electrode materials: gold (as a model supposedly inert surface), platinum (as a practically relevant electrode material), and iron-oxide (as model oxide surface). Main results so far:
- Detailed characterization of Au(111) in relation to surface structure as imaged by electrochemical scanning tunneling microscopy
- Double layer model of stepped Pt single-crystal electrodes, both experiment and simulation
- Detailed understanding of the hitherto unrecognized issues in accurately measuring double-layer capacitance of single crystals
- Detailed characterization of a model single-crystalline Fe2O3 oxide electrode
- Development of (synchrotron-based) X-Ray methodology to probe metal-electrolyte interfaces
- Development of in situ Sum Frequency Generation spectroscopy to probe metal-electrolyte interfaces, in collaboration with AMOLF
- Development of simulation methodology for studying metal-electrolyte interfaces

Progressi oltre lo stato dell’arte e potenziale impatto previsto (incluso l’impatto socioeconomico e le implicazioni sociali più ampie del progetto fino ad ora)

- New model for the double layer of platinum, which is significantly more detailed and consistent than any previous model
- For gold, we have laid the basis for a similarly new model, having fully characterized Au(111).
- Understanding hitherto unrecognized issues in accurately measuring double-layer capacitance of single crystals
- Development and testing of (synchrotron-based) X-Ray methodology to probe metal-electrolyte interfaces; this will take this methodology significantly beyond the state-of-the-art
- Development of in situ Sum Frequency Generation spectroscopy to probe metal-electrolyte interfaces, in collaboration with AMOLF; this will take this methodology significantly beyond the state-of-the-art
- Expected novel models for oxide-electrolyte interfaces
- Detailed new understanding of metal-non aqueous electrolyte interfaces

Pt553-water interface