--- _id: '62806' abstract: - lang: eng text: 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. article_number: e202112679 article_type: original author: - first_name: Mahnaz full_name: Azimzadeh Sani, Mahnaz last_name: Azimzadeh Sani - first_name: Nicholas G. full_name: Pavlopoulos, Nicholas G. last_name: Pavlopoulos - first_name: Simone full_name: Pezzotti, Simone last_name: Pezzotti - first_name: Alessandra full_name: Serva, Alessandra last_name: Serva - first_name: Paolo full_name: Cignoni, Paolo last_name: Cignoni - first_name: Julia full_name: Linnemann, Julia id: '116779' last_name: Linnemann orcid: 0000-0001-6883-5424 - first_name: Mathieu full_name: Salanne, Mathieu last_name: Salanne - first_name: Marie‐Pierre full_name: Gaigeot, Marie‐Pierre last_name: Gaigeot - first_name: Kristina full_name: Tschulik, Kristina last_name: Tschulik citation: ama: 'Azimzadeh Sani M, Pavlopoulos NG, Pezzotti S, et al. Unexpectedly High Capacitance of the Metal Nanoparticle/Water Interface: Molecular‐Level Insights into the Electrical Double Layer. Angewandte Chemie International Edition. 2021;61(5). doi:10.1002/anie.202112679' apa: 'Azimzadeh Sani, M., Pavlopoulos, N. G., Pezzotti, S., Serva, A., Cignoni, P., Linnemann, J., Salanne, M., Gaigeot, M., & Tschulik, K. (2021). Unexpectedly High Capacitance of the Metal Nanoparticle/Water Interface: Molecular‐Level Insights into the Electrical Double Layer. Angewandte Chemie International Edition, 61(5), Article e202112679. https://doi.org/10.1002/anie.202112679' bibtex: '@article{Azimzadeh Sani_Pavlopoulos_Pezzotti_Serva_Cignoni_Linnemann_Salanne_Gaigeot_Tschulik_2021, title={Unexpectedly High Capacitance of the Metal Nanoparticle/Water Interface: Molecular‐Level Insights into the Electrical Double Layer}, volume={61}, DOI={10.1002/anie.202112679}, number={5e202112679}, journal={Angewandte Chemie International Edition}, publisher={Wiley}, author={Azimzadeh Sani, Mahnaz and Pavlopoulos, Nicholas G. and Pezzotti, Simone and Serva, Alessandra and Cignoni, Paolo and Linnemann, Julia and Salanne, Mathieu and Gaigeot, Marie‐Pierre and Tschulik, Kristina}, year={2021} }' chicago: 'Azimzadeh Sani, Mahnaz, Nicholas G. Pavlopoulos, Simone Pezzotti, Alessandra Serva, Paolo Cignoni, Julia Linnemann, Mathieu Salanne, Marie‐Pierre Gaigeot, and Kristina Tschulik. “Unexpectedly High Capacitance of the Metal Nanoparticle/Water Interface: Molecular‐Level Insights into the Electrical Double Layer.” Angewandte Chemie International Edition 61, no. 5 (2021). https://doi.org/10.1002/anie.202112679.' ieee: 'M. Azimzadeh Sani et al., “Unexpectedly High Capacitance of the Metal Nanoparticle/Water Interface: Molecular‐Level Insights into the Electrical Double Layer,” Angewandte Chemie International Edition, vol. 61, no. 5, Art. no. e202112679, 2021, doi: 10.1002/anie.202112679.' mla: 'Azimzadeh Sani, Mahnaz, et al. “Unexpectedly High Capacitance of the Metal Nanoparticle/Water Interface: Molecular‐Level Insights into the Electrical Double Layer.” Angewandte Chemie International Edition, vol. 61, no. 5, e202112679, Wiley, 2021, doi:10.1002/anie.202112679.' short: M. Azimzadeh Sani, N.G. Pavlopoulos, S. Pezzotti, A. Serva, P. Cignoni, J. Linnemann, M. Salanne, M. Gaigeot, K. Tschulik, Angewandte Chemie International Edition 61 (2021). date_created: 2025-12-03T15:39:25Z date_updated: 2025-12-03T16:31:54Z department: - _id: '985' doi: 10.1002/anie.202112679 extern: '1' intvolume: ' 61' issue: '5' keyword: - single-entity electrochemistry - electrical double layer - supercapacitor - nanoparticles language: - iso: eng main_file_link: - open_access: '1' oa: '1' publication: Angewandte Chemie International Edition publication_identifier: issn: - 1433-7851 - 1521-3773 publication_status: published publisher: Wiley quality_controlled: '1' status: public title: 'Unexpectedly High Capacitance of the Metal Nanoparticle/Water Interface: Molecular‐Level Insights into the Electrical Double Layer' type: journal_article user_id: '116779' volume: 61 year: '2021' ... --- _id: '62805' abstract: - lang: eng text: Single-entity electrochemistry allows for assessing electrocatalytic activities of individual material entities such as nanoparticles (NPs). Thus, it becomes possible to consider intrinsic electrochemical properties of nanocatalysts when researching how activity relates to physical and structural material properties. Conversely, conventional electrochemical techniques provide a normalized sum current referring to a huge ensemble of NPs constituting, along with additives (e.g., binders), a complete catalyst-coated electrode. Accordingly, recording electrocatalytic responses of single NPs avoids interferences of ensemble effects and reduces the complexity of electrocatalytic processes, thus enabling detailed description and modelling. Herein, we present insights into the oxygen evolution catalysis at individual cubic Co3O4 NPs impacting microelectrodes of different support materials. Simulating diffusion at supported nanocubes, measured step current signals can be analyzed, providing edge lengths, corresponding size distributions, and interference-free turnover frequencies. The provided nano-impact investigation of (electro-)catalyst-support effects contradicts assumptions on a low number of highly active sites. article_number: '13137' article_type: original author: - first_name: Zhibin full_name: Liu, Zhibin last_name: Liu - first_name: Manuel full_name: Corva, Manuel last_name: Corva - first_name: Hatem M. A. full_name: Amin, Hatem M. A. last_name: Amin - first_name: Niclas full_name: Blanc, Niclas last_name: Blanc - first_name: Julia full_name: Linnemann, Julia id: '116779' last_name: Linnemann orcid: 0000-0001-6883-5424 - first_name: Kristina full_name: Tschulik, Kristina last_name: Tschulik citation: ama: 'Liu Z, Corva M, Amin HMA, Blanc N, Linnemann J, Tschulik K. Single Co3O4 Nanocubes Electrocatalyzing the Oxygen Evolution Reaction: Nano-Impact Insights into Intrinsic Activity and Support Effects. International Journal of Molecular Sciences. 2021;22(23). doi:10.3390/ijms222313137' apa: 'Liu, Z., Corva, M., Amin, H. M. A., Blanc, N., Linnemann, J., & Tschulik, K. (2021). Single Co3O4 Nanocubes Electrocatalyzing the Oxygen Evolution Reaction: Nano-Impact Insights into Intrinsic Activity and Support Effects. International Journal of Molecular Sciences, 22(23), Article 13137. https://doi.org/10.3390/ijms222313137' bibtex: '@article{Liu_Corva_Amin_Blanc_Linnemann_Tschulik_2021, title={Single Co3O4 Nanocubes Electrocatalyzing the Oxygen Evolution Reaction: Nano-Impact Insights into Intrinsic Activity and Support Effects}, volume={22}, DOI={10.3390/ijms222313137}, number={2313137}, journal={International Journal of Molecular Sciences}, publisher={MDPI AG}, author={Liu, Zhibin and Corva, Manuel and Amin, Hatem M. A. and Blanc, Niclas and Linnemann, Julia and Tschulik, Kristina}, year={2021} }' chicago: 'Liu, Zhibin, Manuel Corva, Hatem M. A. Amin, Niclas Blanc, Julia Linnemann, and Kristina Tschulik. “Single Co3O4 Nanocubes Electrocatalyzing the Oxygen Evolution Reaction: Nano-Impact Insights into Intrinsic Activity and Support Effects.” International Journal of Molecular Sciences 22, no. 23 (2021). https://doi.org/10.3390/ijms222313137.' ieee: 'Z. Liu, M. Corva, H. M. A. Amin, N. Blanc, J. Linnemann, and K. Tschulik, “Single Co3O4 Nanocubes Electrocatalyzing the Oxygen Evolution Reaction: Nano-Impact Insights into Intrinsic Activity and Support Effects,” International Journal of Molecular Sciences, vol. 22, no. 23, Art. no. 13137, 2021, doi: 10.3390/ijms222313137.' mla: 'Liu, Zhibin, et al. “Single Co3O4 Nanocubes Electrocatalyzing the Oxygen Evolution Reaction: Nano-Impact Insights into Intrinsic Activity and Support Effects.” International Journal of Molecular Sciences, vol. 22, no. 23, 13137, MDPI AG, 2021, doi:10.3390/ijms222313137.' short: Z. Liu, M. Corva, H.M.A. Amin, N. Blanc, J. Linnemann, K. Tschulik, International Journal of Molecular Sciences 22 (2021). date_created: 2025-12-03T15:35:52Z date_updated: 2025-12-03T16:52:35Z department: - _id: '985' doi: 10.3390/ijms222313137 extern: '1' intvolume: ' 22' issue: '23' keyword: - electrocatalysis - oxygen evolution reaction - cobalt spinel - single-entity electrochemistry language: - iso: eng main_file_link: - open_access: '1' oa: '1' publication: International Journal of Molecular Sciences publication_identifier: issn: - 1422-0067 publication_status: published publisher: MDPI AG quality_controlled: '1' status: public title: 'Single Co3O4 Nanocubes Electrocatalyzing the Oxygen Evolution Reaction: Nano-Impact Insights into Intrinsic Activity and Support Effects' type: journal_article user_id: '116779' volume: 22 year: '2021' ...