ElectroChemical Flow Systems laboratory

Wondering how you can give extra voice to sustainable energy storage? 📣 AQUABATTERY, the company working on acid-base flow batteries and partner in our research project with Pavel Loktionov, Markus (Max) Seling and Sten de Roon, is nominated for the EU Sustainable Energy Award 2025. 🔋⚡ AQUABATTERY launched a pilot plant in Delft last November and is planning to scale up further soon. These flow batteries can be essential for the long-duration energy storage (LDES), needed to cover power fluctuations at timescales of 8-100 hours, which traditional batteries cannot cover yet. If you want to help highlighting this innovation, you can vote here: https://lnkd.in/dsHEauxS

Many congratulations from all of us to the new Dr. Jorrit Bleeker! On Tuesday he successfully defended his thesis on "Mass transport in gas evolving electrolyzers". 🎓 You showed us the beauty of bubbles and it was great to see how many people showed up to celebrate this moment with you - we were even close to completing the EFS family reunion picture. Although we will miss your social energy and bubbly personality, we are very excited for your next adventure! And of course you will always be a part of the EFS family! 🤗 You can find some of his works here: https://lnkd.in/eY93Dy_v https://lnkd.in/eBdZt3Mg https://lnkd.in/eTZT3gt9 Thank you Sarah Marchionda for the amazing photos! (:

[🇳🇱] Zuurstofbelletjes die ontstaan bij de positieve elektrode, en waterstofbelletjes bij de negatieve elektrode: dat is de elektrolyse van groene waterstof in een notendop. Maar blijven die belletjes aan de elektrode plakken, dan verloopt het proces veel minder efficiënt. Jorrit Bleeker onderzocht het verwijderen van deze gasbelletjes met behulp van drukgolven.  Waterstof gaat een grote rol spelen bij het verduurzamen van de industrie. Maar er zijn nog veel kleine verbeterstapjes nodig voordat de groene productie hiervan via elektrolyse kan concurreren met de vervuilende manier waarop het nu wordt gemaakt. ‘Mijn afstudeerprofessor, David Vermaas, had een goed idee voor één zo’n stap,’ zegt Jorrit Bleeker, promovendus in de Transport Phenomena-groep. ‘En alhoewel ik het prima naar mijn zin had als procestechnoloog in de farmaceutische industrie, trokken de verhalen van promoverende vrienden en het kunnen bijdragen aan een groenere samenleving me terug naar TU Delft.’ 🔗Lees het hele verhaal van Jorrit hier: https://edu.nl/qq8dx ... [🇬🇧] Oxygen bubbles forming at the positive electrode and hydrogen bubbles at the negative electrode – the electrolysis of green hydrogen in a nutshell. But whenever these bubbles remain attached to the electrode, they make the process less energy efficient. Jorrit Bleeker studied a new gas bubble removal method, using a pressure swing. Hydrogen is a key driver in advancing the sustainability of industrial processes. But it will take a series of small improvements before its green production via electrolysis can compete with the polluting methods used today. ‘My master’s thesis advisor, professor David Vermaas, had a good idea for one such improvement,’ says Jorrit Bleeker, PhD candidate in the Transport Phenomena group. ‘At that time, I was enjoying my role as a process technologist in the pharmaceutical industry. However, the inspiring stories of friends pursuing their PhDs, along with the opportunity to contribute to a greener society, motivated me to return to Delft University of Technology.’ 🔗Read Jorrit's full story here: https://edu.nl/3a6mr #Hydrogen #Electrolysis #GreenHydrogen #EnergyTransition #Sustainability #Research #Innovation #Technology

[🇳🇱] Promovendus Christel Koopman was maandag te gast bij De nacht van KRO-NCRV op NPO Radio 1! 🎙️ De uitzending gaat over de Green Deal, de klimaatwet en dat klimaatbeleid niet langer de wind in de rug heeft. Welke hoopvolle initiatieven zijn er dan nog wel? Christel vertelt over haar onderzoek naar recycling van CO₂ aan de TU Delft. ♻️ Christel Koopman: "Als je de cirkel van koolstof wilt sluiten en CO₂ wilt recyclen, zul je meerdere techologieën nodig hebben. Eerst moet je het kunnen afvangen uit de lucht of uit de zee. [De volgende stap is] met elektrochemie, dus CO₂-elektrolyse. Als je dan de CO₂ hebt, kun je dat met behulp van elektriciteit weer omzetten in nuttige producten, zoals brandstoffen die we nodig hebben voor auto's en vliegtuigen maar ook andere producten die uit koolstoffen bestaan zoals plastics. En het mooie is: als je elektriciteit kan gebruiken hiervoor, zou je dus ook duurzame energiebronnen kunnen gebruiken als zonne-energie of windenergie." #Duurzaamheid #Circulariteit #CO2 ... [🇬🇧] PhD candidate Christel Koopman was a guest on KRO-NCRV's Night on NPO Radio 1 on Monday! 🎙️ The broadcast discusses the Green Deal, the climate law, and the fact that climate policy no longer has the wind at its back. What hopeful initiatives are still out there? Christel talks about her research on CO₂ recycling at Delft University of Technology. ♻️ Christel Koopman: "If you want to close the carbon loop and recycle CO₂, you will need multiple technologies. First, you need to capture it from the air or from the sea. [The next step is] electrochemistry, specifically CO₂ electrolysis. Once you have the CO₂, you can convert it back into useful products using electricity, such as fuels needed for cars and airplanes, as well as other products made from carbon, like plastics. And the great thing is: if you can use electricity for this, you could also use renewable energy sources like solar or wind energy." #Sustainability #Carbon #Recycling #Circularity #ClimateAction

Book is printed 📘 ! Thesis defense is planned 👨🏼🎓! On April 15th I will be defending my PhD thesis titled "Mass Transport in Gas-evolving Electrolysers" I'm really looking forward to the ceremony, and am looking forward to have a nice closure of the last years. Please send me a message if you want an invite to watch the defense online!

EFS has won the treble 🏆🏆🏆 Last Tuesday Jorrit, Christel, Kosta, and David Vermaas joined the TU Delft Best Climate Action and Energy Paper 2024 event and pitched their research. Jorrit Bleeker’s paper on pressure swing assisted electrolysis won the best paper in the H2 category and Christel Koopman & Kostadin Petrov’s perspective on bipolar membranes in CO2 electrolysis was awarded the best paper in the e-refinery category. After a round of inspiring pitches, Jorrit's pressure swing paper even took the overall Best Energy Paper 2024 prize🥳! We’re very proud of our Jorrit, Christel, and Kosta, and want to thank all the other co-authors for their help in writing the articles! Thank you TU Delft Climate Action Programme and TU Delft | Energy for the very nice event. We hope to take even more prizes next year 😉 For more information and photos of the event, check here: https://lnkd.in/eBd4R_NC The pressure swing electrolysis paper can be found here: https://lnkd.in/eY93Dy_v Thank you, Celine van Kasteren and Ruud van Ommen 🟥 for your contributions Read more about the bipolar membrane perspective here: https://lnkd.in/eH9tJmMR Thank you, Siddhartha Subramanian, Marc Koper, and Thomas Burdyny for this amazing paper. TU Delft e-Refinery, #H2platform Peter Lucas 📷 Nicholas Eichman Baquer , Arenda Stam, Robèrt Kroonen

Radio debut for Jorrit and Christel!🎙👩🏻🔬👨🏼🔬 Yesterday, Christel Koopman and Jorrit Bleeker were invited to speak on Omroep Delft about their recent nomination for the TU Delft Best Energy paper. To explain their research they even made hydrogen live in the studio with the hosts on air! If you want to hear more about Christel & Kostadin Petrov’s perspective on bipolar membranes in CO2 electrolysers, or Jorrit’s work on gas bubble removal in alkaline electrolysis, you can listen back on https://lnkd.in/e6J8aDHu (Show 12-03-2025 10:00, Christel’s interview is at minute 30, and Jorrit’s at minute 41 - in Dutch) If you are interested in joining the best climate action and energy paper 2024 event, you can subscribe here: https://lnkd.in/eBd4R_NC Thank you Omroep Delft for this opportunity, and Frans van Rijnswou for the nice interview. TU Delft | Energy, TU Delft e-Refinery, Dave Boomkens, Eveline Zeegers

The finalists for the Delft University of Technology Best Energy Paper 2024 are announced! 📢 Join the award ceremony event to hear these bright researchers pitch their paper to win €1000 on Tuesday 18 March at 15:30 from The Green Village on Campus (walk-in from 15:00) 🏆🍾 • Urban Energy: Joel Alpízar-Castillo (EEMCS) - Modelling and evaluating different multi-carrier energy system configurations for a Dutch house • eRefinery: Christel Koopman (AS) - Bipolar membranes for intrinsically stable and scalable CO2 electrolysis • Wind Energy: David Fidalgo Domingos (ME) - Full-scale measurements and analysis of the floating installation of an offshore wind turbine tower • H2: Jorrit Bleeker (AS) - Gas bubble removal from a zero-gap alkaline electrolyser with a pressure swing and why foam electrodes might not be suitable at high current densities • PowerWeb: Zeynab Kaseb (EEMCS) - Power flow analysis using quantum and digital annealers: a discrete combinatorial optimization approach Read more about our finalists and the award event: https://edu.nl/euu3x Please register and join: https://lnkd.in/efwC3XH7 TU Delft | Electrical Engineering, Mathematics and Computer Science TU Delft | Mechanical Engineering TU Delft | Applied Sciences TU Delft Climate Action Programme TU Delft Wind Energy Institute TU Delft Urban Energy Institute TU Delft PowerWeb Institute TU Delft e-Refinery Peter Palensky Henk Visscher Arjan Houtepen Simon Watson Peter Lucas Lily Li Cornelia Dinca Maryam Alimoradi Jazi Bendiks Boersma Dave Boomkens Eveline Zeegers Maaike Damen Tim Raaijmakers

What is the impact of flow dynamics and intermittency in electrolysis ⚡ ? We studied the local pH near a millimeter-sized electrode element, mimicking a wire in a mesh electrode or a particle in a suspension electrode. With Fluorescence Lifetime Image Microscopy (FLIM), we can map the local pH in time (2 Hz) and space (9 um resolution), for different flow conditions and intermittent current supply. We observe that the flow rate determines the wake behind this electrode element, while the current density has more impact on the surface pH. More surprising, we saw that the pH profiles around the electrode element are asymmetric (depending on the position of the other electrode) and that the Faradaic reaction continues slowly (for tens of seconds!) after the current supply was interrupted, driven by discharging the capacitance of the electrode surface. The paper led by Nathalie van der Plas-Ligthart and Julius Sommer is out now in Chemical Engineering Journal - read all about it! Congratulations on this nice work – Nathalie, Julius, Jorrit Bleeker, Lorenz Baumgartner, Johan Padding and David Vermaas 🥳 Find the paper here: https://lnkd.in/ezhm2YNs

Next Monday, Nathalie van der Plas-Ligthart will take the final step in her PhD by defending her thesis “Volume-based electrodes for enhancing limiting currents in electrochemical conversion reactions”. We are excited to see you charge ahead with unlimited potential - the best of luck from all of us🍀! We hope to see you all there – 12:00 Aula And knowing that our original team social member can appreciate a cute cat meme – let’s go for that Pretty huge Degree TU Delft, TU Delft e-Refinery