Unexpectedly high capacitance of the metal nanoparticle/water interface
- The electrical double-layer plays a key role in important interfacial electrochemical processes from catalysis to energy storage and corrosion. Therefore, understanding its structure is crucial for the progress of sustainable technologies. We extract new physico-chemical information on the capacitance and structure of the electrical double-layer of platinum and gold nanoparticles at the molecular level, employing single nanoparticle electrochemistry. The charge storage ability of the solid/liquid interface is larger by one order-of-magnitude than predicted by the traditional mean-field models of the double-layer such as the Gouy–Chapman–Stern model. Performing molecular dynamics simulations, we investigate the possible relationship between the measured high capacitance and adsorption strength of the water adlayer formed at the metal surface. These insights may launch the active tuning of solid–solvent and solvent–solvent interactions as an innovative design strategy to transform energy technologies towards superior performance and sustainability.
| Author: | Mahnaz Azimzadeh SaniGND, Nicholas G. PavlopoulosGND, Simone PezzottiGND, Alessandra ServaORCiDGND, Paolo CignoniORCiDGND, Julia LinnemannORCiDGND, Mathieu SalanneORCiDGND, Marie-Pierre GaigeotGND, Kristina TschulikORCiDGND |
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| URN: | urn:nbn:de:hbz:294-85562 |
| DOI: | https://doi.org/10.1002/anie.202112679 |
| Parent Title (German): | Angewandte Chemie International Edition |
| Subtitle (English): | molecular-level insights into the electrical double layer |
| Publisher: | Wiley |
| Place of publication: | Hoboken, New Jersey |
| Document Type: | Article |
| Language: | English |
| Date of Publication (online): | 2022/01/27 |
| Date of first Publication: | 2021/11/18 |
| Publishing Institution: | Ruhr-Universität Bochum, Universitätsbibliothek |
| Tag: | MITICAT, Projekt 94924 electrical double-layer capacitance; nano-impact electrochemistry; nanoparticles; solid-liquid interface |
| Volume: | 61 |
| Issue: | 5, Artikel e202112679 |
| First Page: | e202112679-1 |
| Last Page: | e202112679-8 |
| Note: | Projekt MITICAT, Project ID: 949724 |
| Relation (DC): | info:eu-repo/grantAgreement/EC/H2020/949724 |
| Institutes/Facilities: | Lehrstuhl für Analytische Chemie II, Elektrochemie und Nanoskalige Materialien |
| Dewey Decimal Classification: | Naturwissenschaften und Mathematik / Chemie, Kristallographie, Mineralogie |
| OpenAIRE: | OpenAIRE |
| faculties: | Fakultät für Chemie und Biochemie |
| Licence (English): |  Creative Commons - CC BY 4.0 - Attribution 4.0 International |
