Dr. Daniel Bick

#Plasma-Treated #Cobalt-Doped #Nanoporous #Graphene for Advanced #Electrochemical Applications by Florian Knabl, Nikolaos Kostoglou, Ram Gupta, Afshin Tarat, Steven Hinder, mark baker, Claus Rebholz and Christian Mitterer C 2024, 10(2), 31; https://lnkd.in/diYR_iHH Current number of article views: 1384 Abstract Metal–carbon nanocomposites are identified as key contenders for enhancing water splitting through the oxygen evolution reaction and boosting supercapacitor energy storage capacitances. This study utilizes plasma treatment to transform natural graphite into nanoporous few-layer graphene, followed by additional milling and plasma steps to synthesize a cobalt–graphene nanocomposite. Comprehensive structural characterization was conducted using scanning and transmission electron microscopy, X-ray diffraction, Raman spectroscopy, gas sorption analysis and X-ray photoelectron spectroscopy. Electrochemical evaluations further assessed the materials’ oxygen evolution reaction and supercapacitor performance. Although the specific surface area of the nanoporous carbon decreases from 780 to 480 m2/g in the transition to the resulting nanocomposite, it maintains its nanoporous structure and delivers a competitive electrochemical performance, as evidenced by an overpotential of 290 mV and a Tafel slope of 110 mV/dec. This demonstrates the efficacy of plasma treatment in the surface functionalization of carbon-based materials, highlighting its potential for large-scale chemical-free application due to its environmental friendliness and scalability, paving the way toward future applications. Keywords: #graphene; #plasma; #cobalt; #nanocomposites; nanoporous powders; water splitting; oxygen evolution reaction; #supercapacitor

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“Measure what is measurable, and make measurable what is not so.” is a quotation often ascribed to Galileo Galilei. Whether this is true or not, it is true that a team of scientists at the Institute of Chemical Reaction Engineering at Technische Universität Hamburg and REACNOSTICS GmbH made something measurable that has not been measurable before, the molecules adsorbed at the surface of a solid catalyst inside of a catalytic reactor. The team developed a new measurement method called “Iso-Potential Operando Spectroscopy” (IPOS) to perform spectroscopic measurements inside of catalytic reactors of arbitrary size and shape.   In IPOS, a catalytic reactor is equipped with spatial profiling and the sampled reaction mixture is transferred into a spectroscopic cell containing a tiny amount (few mg) of the same catalyst as inside the reactor, just enough to measure the desired spectroscopic information but as little as possible to minimize conversion in the spectroscopic cell. Once the reaction fluid is separated from the catalyst in the reactor, the chemical composition x is fixed. The pressure p in the transfer system is kept very small and the temperature T of the catalyst in the spectroscopic cell is set to the same value as measured locally in the reactor. In this way, the catalyst in the spectroscopic cell is exposed to the same chemical potential μ (same T, p, x = ‘iso potential’) as the catalyst locally in the reactor and should display the same adsorbates, redox state, crystal phases etc. By scanning the profile reactor now from inlet to outlet, the catalyst in the spectroscopic cell goes through the same chemical history as the catalyst in the reactor, and spatial reactor profiles of the respective spectroscopic information can be measured. IPOS offers three distinct advantages: i) Any spectroscopic, microscopic, or imaging method, which can be applied at the temperature, pressure, and chemical composition conditions in the catalytic reactor, can be combined with any catalytic reactor, in principle even industrial production reactors. ii) The spectroscopic cell can be designed to meet the demands of the measurement method without that compromises have to be made resulting from the dual use as a catalytic reactor as in traditional operando spectroscopy. iii) The question of which reaction conditions to study is answered automatically, as the reactor sets the reaction conditions inside the spectroscopic cell.   In a first application, we have applied IPOS as Iso-Potential DRIFT Spectroscopy to measure which adsorbates populate the catalyst surface on a Ni/γ-Al2O3 catalyst during CO2 methanation inside of a catalytic reactor. The full paper was published in ACS Catalysis (ACS Catal., 14, 2024 8676-8693, DOI: 10.1021/acscatal.4c00536). To perform high-quality iso-potential DRIFTS measurements, REACNOSTICS GmbH has developed a dedicated µ-DRIFTS cell. If you are interested in applying this technology to your own catalytic reactions, contact us. 

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Synthesis of sulfidic #solidstateelectrolytes at Fraunhofer IFAM. One example of moisture-sensitive materials are sulfide solid-state electrolytes, which may be used in future solid-state #batteries. To make these materials economically attractive, the experts of #ElectricalEnergyStorage are researching the scale-up of the synthesis process. Considering the ever-increasing demand for #energy and the need to store #renewable forms of energy, the further development of electrical energy storage systems is essential. #SolidStateBatteries are considered a new generation of batteries. Here, the liquid electrolyte of conventional batteries is replaced with a solid electrolyte, which has many advantages. In this context, sulfidic materials as solid-state electrolytes offer advantages in terms of good intrinsic ionic conductivity and ductility, and, thus, are easy to process. In contrast, sulfidic materials are challenging to synthesize due to moisture sensitivity. While many sulfidic materials have been studied extensively at the laboratory scale for their suitability for application and processability, the production of larger quantities of materials has been of minor interest. To scale up a synthesis, many aspects must be kept in mind. One component is the energetic consideration of the synthesis. Fraunhofer IFAM studies the synthesis steps in terms of their enthalpies to estimate heat generation and heat requirements employing calorimetry and recently published their findings. More information on synthesis of sulfidic solid-state electrolytes at Fraunhofer IFAM: https://s.fhg.de/V8L If you have any questions, please contact Dr.-Ing. Frederieke Langer or Aurelia Gries.

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-> 𝐂𝐚𝐥𝐥 𝐟𝐨𝐫 𝐀𝐛𝐬𝐭𝐫𝐚𝐜𝐭𝐬: 𝐀𝐚𝐜𝐡𝐞𝐧 𝐇𝐲𝐝𝐫𝐨𝐠𝐞𝐧 𝐂𝐨𝐥𝐥𝐨𝐪𝐮𝐢𝐮𝐦 𝟐𝟎𝟐𝟓 🚀 Join us for two exciting days of presentations and discussions at the Aachen Hydrogen Colloquium on May 6-7, 2025, in Aachen, Germany! We invite researchers, industry experts, and enthusiasts to submit their abstracts on a variety of hydrogen-related topics, including: 🔹 Generation via electrolysis and beyond 🔹 Storage and transport 🔹 Usage in the mobility sector 🔹 Usage in industry 🔹 Economy, LCA and social acceptance 𝐈𝐦𝐩𝐨𝐫𝐭𝐚𝐧𝐭 𝐃𝐚𝐭𝐞𝐬: 🗓️ Deadline for abstract submission: January 31, 2025 📩 Notification of acceptance: March 2025 Don't miss this opportunity to share your insights and contribute to the future of hydrogen technologies. For more information or to submit your abstract, please contact us at [email protected] Let’s shape the future of hydrogen together! 💧✨ #AachenHydrogenColloquium #AHC2025 #CallforAbstracts #Hydrogen #Clusters4Future #Zukunftscluster #Wasserstoff

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Check out this white paper from Fraunhofer Research Institution for Battery Cell Production FFB and PEM RWTH Aachen University focusing on gigafactory scale-up for battery production! #battery #rampup #scaleup #production #gigafactory #whitepaper #research #electrification #electricmobility #emobility

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Overcoming Challenges in Sulfur-Based Batteries 🔋 ♻️ There are many challenges we will need to surpass in the future to make sulfur-based batteries a market reference. The present review orchestrated by Yu Jing shows how to face them from a mechanistic point of view. A must-read for the New Year! Read the full review: https://lnkd.in/ddQxs_Zy #EnergyStorage #BatteryTechnology #Innovation #Research In collaboration with andreu cabot Institut Català de Nanociència i Nanotecnologia (ICN2) ICREA - Institució Catalana de Recerca i Estudis Avançats IREC - Institut de Recerca en Energia de Catalunya Barcelona Institute of Science and Technology (BIST) CSIC

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Fraunhofer Research Institution for Battery Cell Production FFB and PEM Motion have reviewed and challenged our latest map and all the different announcements. Now, they want your opinion! What do you predict the battery production capacity will be by 2030? 🔋 ➡ Participate in the survey: https://lnkd.in/d-PQnTXq European battery cell production is accelerating to meet the EU's decarbonization targets. Over 40 companies have announced plans for gigafactories in Europe, showing significant growth. In our map we show that current production capacity announcements are around 1.917+X GWh, with projections exceeding 2 TWh. 📝 Join the Fraunhofer and PEM Motion survey and share your estimate for 2030! Every participant can win a ticket to the 12th Electric Vehicle Production Days on October 23-24, 2024 in Aachen. Learn more at https://ept-aachen.de/The winner will be informed on July 19th. Your insights are vital. Participate now and shape the future of battery production! #BatteryNews #BatteryCapacitySurvey #Opinion #EV #BatteryTechnology #Innovation #FutureOfEnergy

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Part 4 - Photocatalytic Hydrogen Production Mechanisms 🔍⚙️ Hi, Roshen Reji Idiculla here I would like to extend my heartfelt gratitude to nevolab GmbH for their unwavering support in sharing the latest innovations in photocatalysis and sponsoring this post. Now let's dive deeper into the mechanisms involved in photocatalytic hydrogen generation. There are two main pathways: Water splitting: H2O → H2 + 1/2 O2 Requires a photocatalyst with a bandgap > 1.23 eV Oxidation and reduction half-reactions occur on the same photocatalyst Challenging due to the complex 4-electron oxygen evolution reaction Photoreforming of organic compounds: CxHyOz + (2x-z)H2O → (2x+y/2-z)H2 + xCO2 Couples H2 production with organic waste degradation More thermodynamically favorable than water splitting Sacrificial electron donors (alcohols, acids) are often used Key steps in both mechanisms: Light absorption by the photocatalyst generates electron-hole pairs Charge separation and migration of electrons and holes to the surface Reduction of protons to H2 by electrons and oxidation of water/organics by holes Desorption and collection of H2 gas Challenges and strategies: Efficient visible light absorption (bandgap engineering, sensitization) Suppressing electron-hole recombination (nanostructuring, co-catalysts) Enhancing surface reaction kinetics (co-catalysts, surface modifications) Improving charge transport (doping, heterojunctions) Preventing back-reaction of H2 and O2 (surface hydrophobicity, Z-scheme systems) Understanding these mechanisms is crucial for designing high-performance photocatalysts and systems for efficient solar hydrogen production. Stay tuned for the next part on advanced photocatalyst materials! 🚀References: Hisatomi, T., Kubota, J., & Domen, K. (2014). Recent advances in semiconductors for photocatalytic and photoelectrochemical water splitting. Chemical Society Reviews, 43(22), 7520–7535. https://lnkd.in/db5wRhZz Wang, Y., Vogel, A., Sachs, M., Sprick, R. S., Wilbraham, L., Moniz, S. J. A., Godin, R., Zwijnenburg, M. A., Durrant, J. R., Cooper, A. I., & Tang, J. (2019). Current understanding and challenges of solar-driven hydrogen generation using polymeric photocatalysts. Nature Energy, 4(9), 746–760. https://lnkd.in/d6XpPR8M

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New scientific publication dedicated to the 150th anniversary of the Institute of Iron and Steel Technology at TU Bergakademie Freiberg Title: Characterization of CrMnNi Steel Powders Obtained via Gas Atomization This study investigates the relationship between powder size, morphology, chemical composition, and thermophysical properties, revealing that particle size affects both composition and surface tension, which is influenced by elements like sulfur, oxygen, and nitrogen. Authors: Anastasiia Sherstneva, Caroline Quitzke, Matheus Roberto Bellé, Marco Wendler, and Olena Volkova The authors thank the financial support from the European Social Funds Plus (ESF Plus), grant no. 100649753 and the Deutsche Forschungsgemeinschaft (DFG) - German Research Foundation under grant no. 461482547. #TUBAF #IEST #Research #Characterization #Steel #Powder #Chromium #Manganese #Nickel #Gas #Atomization

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It is crucial to enhance the stability of solid-state electrolytes in order to improve the performance of solid-state batteries. Abhik Banerjee's team at TCG CREST has made remarkable progress in investigating the chemical stability of halide solid electrolytes with sulfide solid electrolytes, which could lead to the development of more stable solid-state batteries. We are glad to contribute to the research made at TCG CREEST: “Sphere’s setups allowed us to practically access the electrochemical performance of the different materials tested in this study, with great quality on the generation of impedance results under temperature control”. Abhik Banerjee (Principal Scientist, TCG CREEST) #battery #solidstatebatteries #innovation #energystorage #energytransition #cleanenergy #renewableenergy #lithiumion

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Physicists from the Institute of Applied Physics (IAP) at The University of Bonn, in cooperation with colleagues at the University of Kaiserslautern-Landau (RPTU), have created a one-dimensional gas out of light particles. The work enables the testing of theories about the transition to this state of matter for the first time. Read more: https://lnkd.in/eijbAi4A #photonics

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🚀 Energy storage: A milestone for calcium-oxygen batteries 🔋 #TUBraunschweig and its partners have taken an important step towards pioneering #battery concepts as part of the 'CaSaBatt' research project (Prof. Daniel Schröder)! Researchers have successfully tested the cell design and optimised electrolytes for calcium-oxygen batteries (CASB) in the laboratory. ⚡ The calcium-oxygen battery is emerging as a promising energy storage system. These innovative batteries offer 2.5 times the storage capacity of conventional lithium-ion batteries. The main objective of the project is to develop for the first time an electrically rechargeable CASB at laboratory scale (demonstrator). The results could form the basis for the development of next-generation rechargeable batteries for the consumer market, as well as for low-cost, large-scale energy storage. ℹ️ The ‘CaSaBatt’ project is funded by the Bundesministerium für Bildung und Forschung with a total of around 1.37 million euros. In addition to TU Braunschweig, the project partners are the Universität Münster, the Zentrum für Sonnenenergie- und Wasserstoff-Forschung Baden-Württemberg (ZSW), the Fraunhofer IFAM and IoLiTec Ionic Liquids Technologies GmbH. Read more: 🔗 https://lnkd.in/e_vG8FfB 📸 Daniel Schröder/TU Braunschweig #EnergyStorage #Sustainability #BatteryProduction

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🔌With electricity from wind and sun, chemistry can reposition itself. That's according to Siegfried R. Waldvogel from the Max Planck Institute for Chemical Energy Conversion. In an ELEMENTS interview, he explains his vision for the future of electrochemistry. ➡️Read the interview here: https://ow.ly/uh7h50TWXik #Evonik #ELEMENTSMagazine #Electrochemistry #Interview

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The #SURFICEcomicseries is approaching its end. In the 12th section, we present Mingyue Ding, who focuses on understanding the heterogeneous nucleation of #supercooled droplets at Technische Universität Darmstadt.  🔗Discover her strategy to study the freezing events on different materials in the complete storyboard: https://lnkd.in/d4_wSQeT

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🌍 Exciting News! ELLIS unit Jena and Max Planck Institute for Biogeochemistry Director Markus Reichstein were recently featured on MDR MITTELDEUTSCHER RUNDFUNK! 📺 In the lead-up to #COP29, Prof. Reichstein discussed the significant impact of extreme climate events like droughts on #Thuringia 🇩🇪 and highlighted how our region can actively contribute to #ClimateProtection. 🌱 As climate challenges grow, understanding the local effects of global changes is more crucial than ever. This conversation underscores the role that science, technology, and regional efforts can play in creating a sustainable future. 💧🌳 https://lnkd.in/gzjyk9PM

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𝐑𝐞𝐬𝐞𝐚𝐫𝐜𝐡𝐞𝐫𝐬 𝐜𝐚𝐧 𝐧𝐨𝐰 𝐚𝐜𝐜𝐮𝐫𝐚𝐭𝐞𝐥𝐲 𝐦𝐞𝐚𝐬𝐮𝐫𝐞 𝐭𝐡𝐞 𝐞𝐦𝐞𝐫𝐠𝐞𝐧𝐜𝐞 𝐚𝐧𝐝 𝐝𝐚𝐦𝐩𝐢𝐧𝐠 𝐨𝐟 𝐚 𝐩𝐥𝐚𝐬𝐦𝐨𝐧𝐢𝐜 𝐟𝐢𝐞𝐥𝐝 An international research team led by Universität Hamburg, Deutsches Elektronen-Synchrotron DESY, and Stanford University has developed a new approach to characterize the electric field of arbitrary plasmonic samples, like e.g. gold nanoparticles. Plasmonic materials are of particular interest due to their extraordinary efficiency at absorbing light, which is crucial for renewable energy and other technologies. In the journal Nano Letters, the researchers report on their study, which will advance the fields of nanoplasmonics and nanophotonics with their promising technology platforms. 𝐎𝐫𝐢𝐠𝐢𝐧𝐚𝐥 𝐩𝐮𝐛𝐥𝐢𝐜𝐚𝐭𝐢𝐨𝐧: Kai-Fu Wong, Weiwei Li, Zilong Wang, Vincent Wanie, Erik Månsson, Dominik Höing, Johannes Blöchl, Thomas Nubbemeyer, Abdallah Azzeer, Andrea Trabattoni, Holger Lange, Francesca Calegari, and Matthias Kling “Far-Field Petahertz Sampling of Plasmonic Fields” Nano Lett. 2024, 24, 18, 5506–5512 DOI: 10.1021/acs.nanolett.4c00658 https://lnkd.in/ehQ7n4bM

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We are pleased to share one of the winners of the Batteries 2022 Best Paper Award. More winners can be found at: https://brnw.ch/21wKaBL “Study on Thermal Runaway Behavior of Li-Ion Batteries Using Different Abuse Methods” by Dan Wei, Mengqi Zhang, Linpei Zhu, Hu Chen, Wensheng Huang, Jian Yao, Zhuchen Yuan, Chengshan Xu and Xuning Feng Batteries 2022, 8(11), 201; https://brnw.ch/21wKaBM Abstract Thermal runaway (TR) and the thermal runaway propagation (TRP) of Li-ion batteries can lead to safety incidents and cause explosion or fire accidents. Therefore, TR is a critical issue for the thermal safety of Li-ion batteries. In this study, the TR and TRP behavior of Li-ion batteries using different abuse methods (nail penetration, side heating, and overcharge) was investigated experimentally. First, the Extended Volume Accelerating Rate Calorimetry (EV-ARC) test was performed using the cell with an internal implantation thermocouple for a comparative study. Three abuse methods were used to induce TR and TRP for the cells and modules. At the cell level, the maximum temperature inside the cell under the EV-ARC test, nail penetration, and side-heating abuse was 994.8 °C, 964.3 °C, and 1020 °C, respectively. The thermocouple inside the cell under the overcharge abuse test was broken, and the experimental phenomenon indicated that the cell was most severely damaged under the overcharging abuse test. At the module level, the TRP behavior using the three abuse methods was different than in the first two TR cells, while the behavior of the other cells was similar. It was evidenced that TRP triggered by the overcharge abuse was the most hazardous, followed by the side-heating abuse, and lastly, the nail-penetration abuse was the least. Keywords: lithium-ion battery; thermal runaway; abuse tests #batteries #award

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📢 News from our scientists 👩‍💻 👨‍🔬 🧪 How Catalysts Secretly Lose Their Stability Covalent organic frameworks (COFs) are promising catalysts, but their true mechanism is surprising. Researchers from Ruhr University Bochum (Kristina Tschulik and Pouya Hosseini) and the Max Planck Institutes for Solid State Research and for Sustainable Materials have shown that COFs’ catalytic activity doesn’t come from the frameworks themselves. Instead, the cobalt ions are released from the framework and transform into nanoparticles that perform the actual catalysis. This discovery, published in Advanced Science (Nov 26, 2024), opens the door to designing far more efficient catalysts by combining organic frameworks with nanoparticles ✅ . Find more information below ⤵ https://lnkd.in/eVVJC2ms #RUB #MRD #MPI #Electrochemistry #Catalysis #Innovation #Sustainability #AdvancedScience

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#BatteryLabFactory 🔋 At the iPAT - Institute for Particle Technology (Institut für Partikeltechnik) at #TUBraunschweig, scientist Svenja Schreiber is researching the dry coating of battery electrodes. 🔍 The biggest challenge she currently faces is scaling up the applied process from laboratory scale to industrial application, as the process is still relatively new and many parameters still need to be defined. 💡 “What particularly excites me is that we want to establish a very sustainable process here. By not using solvents, we can save a lot of space, but also a lot of energy in particular, as we no longer have to use solvents. And this can of course reduce CO2 consumption and investment costs,” says the research assistant. 👉 Discover the fascinating world of science with our #Science2Go format with Innovationsgesellschaft Technische Universität Braunschweig mbH (iTUBS) and gain insights into a wide range of research areas at #TUBraunschweig. More about knowledge transfer and technology transfer at: https://itubs.de/ 🎥 iTUBS #Mobility #Battery #BatteryProduction #Science #Braunschweig

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