[{"publisher":"Wiley","_id":"63675","user_id":"116779","volume":18,"status":"public","oa":"1","citation":{"chicago":"Leppin, Christian, Carsten Placke‐Yan, Georg Bendt, Sheila Hernandez, Kristina Tschulik, Stephan Schulz, and Julia Linnemann. “Interfacial Softening and Electrolyte Uptake in Co<sub>3</sub>O<sub>4</sub> OER Catalysts: Insight from <i>Operando</i> Spectroscopy and Fast EQCM‐D.” <i>ChemCatChem</i> 18, no. 2 (2026). <a href=\"https://doi.org/10.1002/cctc.202501104\">https://doi.org/10.1002/cctc.202501104</a>.","short":"C. Leppin, C. Placke‐Yan, G. Bendt, S. Hernandez, K. Tschulik, S. Schulz, J. Linnemann, ChemCatChem 18 (2026).","apa":"Leppin, C., Placke‐Yan, C., Bendt, G., Hernandez, S., Tschulik, K., Schulz, S., &#38; Linnemann, J. (2026). Interfacial Softening and Electrolyte Uptake in Co<sub>3</sub>O<sub>4</sub> OER Catalysts: Insight from <i>Operando</i> Spectroscopy and Fast EQCM‐D. <i>ChemCatChem</i>, <i>18</i>(2), Article e01104. <a href=\"https://doi.org/10.1002/cctc.202501104\">https://doi.org/10.1002/cctc.202501104</a>","ieee":"C. Leppin <i>et al.</i>, “Interfacial Softening and Electrolyte Uptake in Co<sub>3</sub>O<sub>4</sub> OER Catalysts: Insight from <i>Operando</i> Spectroscopy and Fast EQCM‐D,” <i>ChemCatChem</i>, vol. 18, no. 2, Art. no. e01104, 2026, doi: <a href=\"https://doi.org/10.1002/cctc.202501104\">10.1002/cctc.202501104</a>.","ama":"Leppin C, Placke‐Yan C, Bendt G, et al. Interfacial Softening and Electrolyte Uptake in Co<sub>3</sub>O<sub>4</sub> OER Catalysts: Insight from <i>Operando</i> Spectroscopy and Fast EQCM‐D. <i>ChemCatChem</i>. 2026;18(2). doi:<a href=\"https://doi.org/10.1002/cctc.202501104\">10.1002/cctc.202501104</a>","bibtex":"@article{Leppin_Placke‐Yan_Bendt_Hernandez_Tschulik_Schulz_Linnemann_2026, title={Interfacial Softening and Electrolyte Uptake in Co<sub>3</sub>O<sub>4</sub> OER Catalysts: Insight from <i>Operando</i> Spectroscopy and Fast EQCM‐D}, volume={18}, DOI={<a href=\"https://doi.org/10.1002/cctc.202501104\">10.1002/cctc.202501104</a>}, number={2e01104}, journal={ChemCatChem}, publisher={Wiley}, author={Leppin, Christian and Placke‐Yan, Carsten and Bendt, Georg and Hernandez, Sheila and Tschulik, Kristina and Schulz, Stephan and Linnemann, Julia}, year={2026} }","mla":"Leppin, Christian, et al. “Interfacial Softening and Electrolyte Uptake in Co<sub>3</sub>O<sub>4</sub> OER Catalysts: Insight from <i>Operando</i> Spectroscopy and Fast EQCM‐D.” <i>ChemCatChem</i>, vol. 18, no. 2, e01104, Wiley, 2026, doi:<a href=\"https://doi.org/10.1002/cctc.202501104\">10.1002/cctc.202501104</a>."},"quality_controlled":"1","main_file_link":[{"open_access":"1"}],"article_number":"e01104","language":[{"iso":"eng"}],"doi":"10.1002/cctc.202501104","title":"Interfacial Softening and Electrolyte Uptake in Co<sub>3</sub>O<sub>4</sub> OER Catalysts: Insight from <i>Operando</i> Spectroscopy and Fast EQCM‐D","year":"2026","publication_identifier":{"issn":["1867-3880","1867-3899"]},"author":[{"id":"117722","first_name":"Christian","last_name":"Leppin","full_name":"Leppin, Christian"},{"last_name":"Placke‐Yan","first_name":"Carsten","full_name":"Placke‐Yan, Carsten"},{"last_name":"Bendt","first_name":"Georg","full_name":"Bendt, Georg"},{"first_name":"Sheila","last_name":"Hernandez","full_name":"Hernandez, Sheila"},{"first_name":"Kristina","last_name":"Tschulik","full_name":"Tschulik, Kristina"},{"full_name":"Schulz, Stephan","first_name":"Stephan","last_name":"Schulz"},{"first_name":"Julia","last_name":"Linnemann","orcid":"0000-0001-6883-5424","full_name":"Linnemann, Julia","id":"116779"}],"date_updated":"2026-01-20T19:36:51Z","publication_status":"published","intvolume":"        18","date_created":"2026-01-20T19:33:40Z","keyword":["electrocatalysis","Co3O4","EQCM-D","OER"],"type":"journal_article","department":[{"_id":"985"}],"issue":"2","publication":"ChemCatChem","abstract":[{"lang":"eng","text":"Cobalt spinel (Co3O4) catalysts are widely studied in scope of the electrocatalytic oxygen evolution reaction (OER), yet the role of interfacial structural transformation under anodic bias remains under debate. Here, we employ an operando approach, combining a fast electrochemical quartz crystal microbalance with dissipation monitoring (EQCM-D), electrochemical impedance spectroscopy (EIS), and Raman spectroscopy to investigate interfacial transformations of Co3O4 nanoparticle electrodes in alkaline electrolyte. We identify two distinct regimes during the anodic sweep prior to the macroscopic OER onset. At lower potentials, the catalyst interface remains mechanically rigid while reversibly associating several OH−/H2O species per oxidized cobalt site. At higher potentials, pronounced softening of the interface occurs alongside further uptake of electrolyte species. This indicates amorphization and a ‘swelling process’ beyond simple adsorption. Notably, an electrochemical conditioning treatment can suppress mass and compliance hysteresis without affecting OER activity, suggesting that most incorporated electrolyte species do not participate in the OER. EIS further reveals that OER intermediates form well below the apparent OER onset potential. These results advance our mechanistic understanding of interfacial transformations in cobalt-based OER catalysts and establish EQCM-D as a sensitive operando technique for probing electrocatalyst transformations."}]},{"publication_status":"published","date_updated":"2024-01-19T16:43:56Z","author":[{"full_name":"Krauter, Stefan","first_name":"Stefan","last_name":"Krauter","orcid":"0000-0002-3594-260X","id":"28836"},{"id":"66","full_name":"Böcker, Joachim","orcid":"0000-0002-8480-7295","last_name":"Böcker","first_name":"Joachim"},{"id":"20560","full_name":"Freitag, Christine","last_name":"Freitag","first_name":"Christine"},{"id":"37339","first_name":"Burkhard","last_name":"Hehenkamp","full_name":"Hehenkamp, Burkhard"},{"full_name":"Hilleringmann, Ulrich","first_name":"Ulrich","last_name":"Hilleringmann","id":"20179"},{"last_name":"Temmen","first_name":"Katrin","full_name":"Temmen, Katrin","id":"30086"},{"first_name":"Tobias","last_name":"Klaus","full_name":"Klaus, Tobias"},{"full_name":"Rohrer, Nicolaus","first_name":"Nicolaus","last_name":"Rohrer"},{"first_name":"Sven","last_name":"Lehmann","full_name":"Lehmann, Sven"}],"publication_identifier":{"isbn":["978-3-948176-14-3"]},"title":"Projekt Art-D Grids: Nachhaltige und stabile Microgrids in Afrika - eine Plattform für Forschung und Lehre für die Entwicklung","year":"2021","language":[{"iso":"ger"}],"publication":"Tagungsband des 36. PV-Symposiums, 18.-26 Mai 2021","department":[{"_id":"53"},{"_id":"475"},{"_id":"52"},{"_id":"453"},{"_id":"59"},{"_id":"300"}],"type":"conference","keyword":["Art-D","Afrika","Resilienz","Resilience","Grid stability","robustness","microgrids"],"date_created":"2021-05-20T09:58:43Z","file":[{"relation":"main_file","date_updated":"2022-01-06T11:49:19Z","file_name":"Staffelstein 2021 ART-D S.305-309.pdf","access_level":"closed","file_size":5128404,"file_id":"29170","success":1,"content_type":"application/pdf","creator":"krauter","date_created":"2022-01-06T11:49:19Z"}],"has_accepted_license":"1","conference":{"name":"36. PV-Symposium","start_date":"2021-05-18","location":"Staffelstein / online","end_date":"2021-05-26"},"status":"public","user_id":"66","ddc":["620"],"_id":"22218","publisher":"Conexio","page":"305-309","quality_controlled":"1","citation":{"ieee":"S. Krauter <i>et al.</i>, “Projekt Art-D Grids: Nachhaltige und stabile Microgrids in Afrika - eine Plattform für Forschung und Lehre für die Entwicklung,” in <i>Tagungsband des 36. PV-Symposiums, 18.-26 Mai 2021</i>, Staffelstein / online, 2021, pp. 305–309.","apa":"Krauter, S., Böcker, J., Freitag, C., Hehenkamp, B., Hilleringmann, U., Temmen, K., Klaus, T., Rohrer, N., &#38; Lehmann, S. (2021). Projekt Art-D Grids: Nachhaltige und stabile Microgrids in Afrika - eine Plattform für Forschung und Lehre für die Entwicklung. <i>Tagungsband des 36. PV-Symposiums, 18.-26 Mai 2021</i>, 305–309.","mla":"Krauter, Stefan, et al. “Projekt Art-D Grids: Nachhaltige und stabile Microgrids in Afrika - eine Plattform für Forschung und Lehre für die Entwicklung.” <i>Tagungsband des 36. PV-Symposiums, 18.-26 Mai 2021</i>, Conexio, 2021, pp. 305–09.","bibtex":"@inproceedings{Krauter_Böcker_Freitag_Hehenkamp_Hilleringmann_Temmen_Klaus_Rohrer_Lehmann_2021, place={Pforzheim}, title={Projekt Art-D Grids: Nachhaltige und stabile Microgrids in Afrika - eine Plattform für Forschung und Lehre für die Entwicklung}, booktitle={Tagungsband des 36. PV-Symposiums, 18.-26 Mai 2021}, publisher={Conexio}, author={Krauter, Stefan and Böcker, Joachim and Freitag, Christine and Hehenkamp, Burkhard and Hilleringmann, Ulrich and Temmen, Katrin and Klaus, Tobias and Rohrer, Nicolaus and Lehmann, Sven}, year={2021}, pages={305–309} }","ama":"Krauter S, Böcker J, Freitag C, et al. Projekt Art-D Grids: Nachhaltige und stabile Microgrids in Afrika - eine Plattform für Forschung und Lehre für die Entwicklung. In: <i>Tagungsband des 36. PV-Symposiums, 18.-26 Mai 2021</i>. Conexio; 2021:305-309.","short":"S. Krauter, J. Böcker, C. Freitag, B. Hehenkamp, U. Hilleringmann, K. Temmen, T. Klaus, N. Rohrer, S. Lehmann, in: Tagungsband des 36. PV-Symposiums, 18.-26 Mai 2021, Conexio, Pforzheim, 2021, pp. 305–309.","chicago":"Krauter, Stefan, Joachim Böcker, Christine Freitag, Burkhard Hehenkamp, Ulrich Hilleringmann, Katrin Temmen, Tobias Klaus, Nicolaus Rohrer, and Sven Lehmann. “Projekt Art-D Grids: Nachhaltige und stabile Microgrids in Afrika - eine Plattform für Forschung und Lehre für die Entwicklung.” In <i>Tagungsband des 36. PV-Symposiums, 18.-26 Mai 2021</i>, 305–9. Pforzheim: Conexio, 2021."},"file_date_updated":"2022-01-06T11:49:19Z","place":"Pforzheim"},{"quality_controlled":"1","file_date_updated":"2022-01-06T13:11:59Z","citation":{"ama":"Kakande JN, Philipo GH, Krauter S. Load Data Acquisition in Rural East Africa for the Layout of Microgrids and Demand–Side–Management Measures. In: <i>Proceedings of the 38th European Photovoltaic Solar Energy Conference and Exhibition (EUPVSEC 2021)</i>. ; 2021:1505-1510. doi:<a href=\"https://doi.org/10.4229/EUPVSEC20212021-6BV.5.38\">10.4229/EUPVSEC20212021-6BV.5.38</a>","bibtex":"@inproceedings{Kakande_Philipo_Krauter_2021, title={Load Data Acquisition in Rural East Africa for the Layout of Microgrids and Demand–Side–Management Measures}, DOI={<a href=\"https://doi.org/10.4229/EUPVSEC20212021-6BV.5.38\">10.4229/EUPVSEC20212021-6BV.5.38</a>}, booktitle={Proceedings of the 38th European Photovoltaic Solar Energy Conference and Exhibition (EUPVSEC 2021)}, author={Kakande, Josephine Nakato and Philipo, Godiana Hagile and Krauter, Stefan}, year={2021}, pages={1505–1510} }","mla":"Kakande, Josephine Nakato, et al. “Load Data Acquisition in Rural East Africa for the Layout of Microgrids and Demand–Side–Management Measures.” <i>Proceedings of the 38th European Photovoltaic Solar Energy Conference and Exhibition (EUPVSEC 2021)</i>, 2021, pp. 1505–10, doi:<a href=\"https://doi.org/10.4229/EUPVSEC20212021-6BV.5.38\">10.4229/EUPVSEC20212021-6BV.5.38</a>.","chicago":"Kakande, Josephine Nakato, Godiana Hagile Philipo, and Stefan Krauter. “Load Data Acquisition in Rural East Africa for the Layout of Microgrids and Demand–Side–Management Measures.” In <i>Proceedings of the 38th European Photovoltaic Solar Energy Conference and Exhibition (EUPVSEC 2021)</i>, 1505–10, 2021. <a href=\"https://doi.org/10.4229/EUPVSEC20212021-6BV.5.38\">https://doi.org/10.4229/EUPVSEC20212021-6BV.5.38</a>.","short":"J.N. Kakande, G.H. Philipo, S. Krauter, in: Proceedings of the 38th European Photovoltaic Solar Energy Conference and Exhibition (EUPVSEC 2021), 2021, pp. 1505–1510.","apa":"Kakande, J. N., Philipo, G. H., &#38; Krauter, S. (2021). Load Data Acquisition in Rural East Africa for the Layout of Microgrids and Demand–Side–Management Measures. <i>Proceedings of the 38th European Photovoltaic Solar Energy Conference and Exhibition (EUPVSEC 2021)</i>, 1505–1510. <a href=\"https://doi.org/10.4229/EUPVSEC20212021-6BV.5.38\">https://doi.org/10.4229/EUPVSEC20212021-6BV.5.38</a>","ieee":"J. N. Kakande, G. H. Philipo, and S. Krauter, “Load Data Acquisition in Rural East Africa for the Layout of Microgrids and Demand–Side–Management Measures,” in <i>Proceedings of the 38th European Photovoltaic Solar Energy Conference and Exhibition (EUPVSEC 2021)</i>, 2021, pp. 1505–1510, doi: <a href=\"https://doi.org/10.4229/EUPVSEC20212021-6BV.5.38\">10.4229/EUPVSEC20212021-6BV.5.38</a>."},"user_id":"16148","ddc":["620"],"page":"1505-1510","_id":"24540","has_accepted_license":"1","status":"public","conference":{"name":"38th European Photovoltaic Solar Energy Conference and Exhibition (EUPVSEC 2021)","start_date":"2021-09-06","end_date":"2021-09-10"},"type":"conference","keyword":["Art-D","Afrika","Demand side management","MySQL","Raspberry pi","Data acquisition"],"department":[{"_id":"53"}],"file":[{"date_updated":"2022-01-06T13:11:59Z","relation":"main_file","access_level":"closed","file_size":1343406,"file_name":"Kakande Philipo Krauter - Load Data Aquisition ART-D - EUPVSEC 2021.pdf","success":1,"content_type":"application/pdf","file_id":"29174","creator":"krauter","date_created":"2022-01-06T13:11:59Z"}],"date_created":"2021-09-16T05:52:50Z","abstract":[{"lang":"eng","text":"With its growing population and industrialization, DREs, and solar technologies in particular, provide a \r\nsustainable means of bridging the current energy deficit in Africa, increasing supply reliability and meeting future \r\ndemand. Data acquisition and data management systems allow real time monitoring and control of energy systems as \r\nwell as performance analysis. However commercial data acquisition systems often have cost implications that are \r\nprohibitive for small PV systems and installations in developing countries.\r\nIn this paper, a multi-user, multi-purpose microgrid database system is designed and implemented. MAVOWATT \r\n270 power quality analyzers by GOSSEN METRAWATT, raspberry pi modules and sensors are used for measuring, \r\nrecording and storing electrical and meteorological data in East Africa. Socio-economic data is also stored in the\r\ndatabase. The designed system employs open source software and hardware solutions which are best suited to \r\ndeveloping regions like East Africa due to the lower cost implications.\r\nThe expected results promise a comprehensive database covering different electro-technical and socio-economic \r\nparameters useful for optimal design of microgrid systems."}],"publication":"Proceedings of the 38th European Photovoltaic Solar Energy Conference and Exhibition (EUPVSEC 2021)","doi":"10.4229/EUPVSEC20212021-6BV.5.38","language":[{"iso":"eng"}],"publication_status":"published","date_updated":"2024-10-17T08:45:50Z","year":"2021","title":"Load Data Acquisition in Rural East Africa for the Layout of Microgrids and Demand–Side–Management Measures","author":[{"id":"88649","first_name":"Josephine Nakato","last_name":"Kakande","full_name":"Kakande, Josephine Nakato"},{"full_name":"Philipo, Godiana Hagile","last_name":"Philipo","first_name":"Godiana Hagile","id":"88505"},{"last_name":"Krauter","first_name":"Stefan","orcid":"0000-0002-3594-260X","full_name":"Krauter, Stefan","id":"28836"}],"publication_identifier":{"isbn":["3-936338-78-7"]}}]