ChemElectroChem最新文献_第8页

Iridium Oxide Network on Non-conductive TiO2 Support as a Catalyst for Oxygen Evolution Reaction 非导电TiO2载体上氧化铱网络作为析氧反应催化剂的研究

IF 3.5 4区化学

ChemElectroChem Pub Date : 2025-03-25 DOI: 10.1002/celc.202400625

Shabnam Zargarian, Camille Roiron, Giovanni Ferro, Plamen Atanassov

{"title":"Iridium Oxide Network on Non-conductive TiO2 Support as a Catalyst for Oxygen Evolution Reaction","authors":"Shabnam Zargarian, Camille Roiron, Giovanni Ferro, Plamen Atanassov","doi":"10.1002/celc.202400625","DOIUrl":"https://doi.org/10.1002/celc.202400625","url":null,"abstract":"Successful deployment of hydrogen technologies relies on converting electricity from renewable energy sources into hydrogen. Proton exchange membrane electrolyzers are currently the technology of choice for this transformation. These devices use electricity to split water molecules into hydrogen and oxygen. To build membrane electrode assemblies with low iridium loading, while maintaining good in-plane conductivity, an extended network of iridium oxide is required. To this effect, we synthesize IrO2 catalysts on a non-conductive titanium dioxide anatase support. The iridium oxide particles obtained are well dispersed on the surface of the support. Furthermore, at the optimal iridium oxide loading, a network of relatively small iridium oxide particles covers the surface of the support. Increasing the iridium oxide loading beyond this optimum does not bring any appreciable increase in connectivity and decreases the surface-to-mass ratio of iridium oxide, which is detrimental to the mass activity of the material. The synthesis method presented herein leads to the formation of an iridium oxide extended network that grants electrical conductivity to the material despite the high resistivity of the titanium dioxide anatase support. The result is a catalyst that enjoys the chemical stability of anatase but is also conductive and highly active for the OER.","PeriodicalId":142,"journal":{"name":"ChemElectroChem","volume":"12 8","pages":""},"PeriodicalIF":3.5,"publicationDate":"2025-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/celc.202400625","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143826973","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

How an Anode-Sided Gap Influences the Electrooxidation of Phenols in Flow Reactors 阳极侧间隙如何影响流动反应器中苯酚的电氧化

IF 3.5 4区化学

ChemElectroChem Pub Date : 2025-03-21 DOI: 10.1002/celc.202400706

Jonas Wolf, Nijiati Yasheng, Dr. Julian Tobias Kleinhaus, Dr. Kevinjeorjios Pellumbi, Leon Wickert, Dr. Daniel Siegmund, Prof. Dr. Ulf-Peter Apfel

{"title":"How an Anode-Sided Gap Influences the Electrooxidation of Phenols in Flow Reactors","authors":"Jonas Wolf, Nijiati Yasheng, Dr. Julian Tobias Kleinhaus, Dr. Kevinjeorjios Pellumbi, Leon Wickert, Dr. Daniel Siegmund, Prof. Dr. Ulf-Peter Apfel","doi":"10.1002/celc.202400706","DOIUrl":"https://doi.org/10.1002/celc.202400706","url":null,"abstract":"Electroorganic synthesis offers a sustainable way to valorize chemical building blocks through renewable energy and environmentally friendly reagents. Substituted quinones, vital for manufacturing supplements, pharmaceuticals, and pesticides, are typically derived from phenols via thermochemical oxidation with inorganic oxidizers and specialized catalysts. Electrochemistry's ability to omit such components highlights the appeal of electrifying this process. This study explores the electrochemical oxidation of 2,3,5-trimethylphenol (TMP) into trimethyl-1,4-benzoquinone (TMQ) – a crucial intermediate for vitamin E production – using a zero-gap electrolyzer. A TMQ yield of 18 % and selectivity of 22 % were achieved, improving to 35 % and 37 %, respectively, with an anode-sided spacer. We sought to identify factors promoting TMQ formation in reactors with an anode-sided gap, addressing limitations in zero-gap configurations and investigating the dependency on half-cell potential, local reactant concentrations, pH, and electrolyte convection. The results revealed that the local substrate concentration is interrelated with electrolyte convection and is the most critical factor responsible for the gap-related effect. A TMQ yield and selectivity of 33 % and 32 % were achieved in continuous flow conditions in a zero-gap electrolyzer at optimized conditions. These findings underscore the critical role of local reactant concentrations in scaling synthetic electrochemical reactions, providing a robust framework for tackling future challenges in the field.","PeriodicalId":142,"journal":{"name":"ChemElectroChem","volume":"12 10","pages":""},"PeriodicalIF":3.5,"publicationDate":"2025-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/celc.202400706","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144131526","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Enhancing the Activity and Stability of IrO2 for the Oxygen Evolution Reaction over a Wide pH Range using Electrodeposited BaO2 电沉积BaO2提高IrO2在大pH范围内析氧反应的活性和稳定性

IF 3.5 4区化学

ChemElectroChem Pub Date : 2025-03-20 DOI: 10.1002/celc.202400611

Thi Hong Nga Ngo (Sarah Ngo), James D. Riches, Jonathan Love, Anthony P. O'Mullane

{"title":"Enhancing the Activity and Stability of IrO2 for the Oxygen Evolution Reaction over a Wide pH Range using Electrodeposited BaO2","authors":"Thi Hong Nga Ngo (Sarah Ngo), James D. Riches, Jonathan Love, Anthony P. O'Mullane","doi":"10.1002/celc.202400611","DOIUrl":"https://doi.org/10.1002/celc.202400611","url":null,"abstract":"Electrochemical water splitting holds great promise for converting intermittent renewable energy into chemical energy in the form of hydrogen. A major challenge is developing highly active and stable electrocatalysts, in particular for the demanding oxygen evolution reaction (OER). IrO2 is renowned as one of the most efficient electrocatalysts for this reaction but still requires improvement in performance. Here we present an electrochemically synthesized IrO2/BaO2 electrocatalyst where the incorporation of BaO₂ is believed to elevate the oxygen activity within the composite, allowing it to sustain higher current densities with improved stability. In acidic media, the stability of the Ba-IrO2-300 °C sample showed significant improvement, with the initial current density of 100 mA cm−2 decreasing to 80 mA cm−2 after 8 h of testing. The resultant electrocatalysts show high catalytic activity over a wide range of pH values (1–14).At low current densities, neutral and alkaline conditions are more favourable compared to an acidic electrolyte where the stability at neutral pH was maintained for up to 70 h of testing. The enhanced performance of Ba-incorporated IrO₂ may be attributed to access to oxygen activating Ba sites, offering valuable insights into the development of cost-effective, efficient, and reliable IrO₂-based catalysts for water splitting.","PeriodicalId":142,"journal":{"name":"ChemElectroChem","volume":"12 13","pages":""},"PeriodicalIF":3.5,"publicationDate":"2025-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/celc.202400611","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144550898","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Advancements in Electrocatalysts for Oxygen Evolution Reaction: A Review of Catalysts in Acidic Media 析氧电催化剂的研究进展：酸性介质中析氧电催化剂的研究进展

IF 3.5 4区化学

ChemElectroChem Pub Date : 2025-03-20 DOI: 10.1002/celc.202400559

Gege Su, Jiayi Yang, Jie Yin

{"title":"Advancements in Electrocatalysts for Oxygen Evolution Reaction: A Review of Catalysts in Acidic Media","authors":"Gege Su, Jiayi Yang, Jie Yin","doi":"10.1002/celc.202400559","DOIUrl":"https://doi.org/10.1002/celc.202400559","url":null,"abstract":"Facing the increasingly severe challenges of energy and environment, green hydrogen production technology has attracted widespread attention. The efficient catalysis of the acidic oxygen evolution reaction (OER) has always been a technological bottleneck that needs to be overcome. This article reviews the latest research progress in this field in recent years. Firstly, the article analyzes the two classic OER reaction mechanisms, adsorbate evolution mechanism (AEM) and lattice oxygen mechanism (LOM), finds that the latter may have a lower reaction energy barrier but is less stable. This provides a theoretical basis for designing catalysts with both high activity and stability. Subsequently, the article reviews recent advancements in noble, non-noble metals, and carbides catalysts, highlighting that optimizing composition and electronic structures is crucial for enhancing catalytic performance. The article also illustrates the implementation pathways of these strategies with specific examples. These innovative designs not only significantly enhance catalytic performance but also greatly improve stability, injecting new momentum into the commercial application of green hydrogen production. In summary, this article comprehensively discusses the innovative pathways of acidic OER catalysts from mechanism exploration to case analysis, and will undoubtedly provide an important reference for further breakthroughs in this field.","PeriodicalId":142,"journal":{"name":"ChemElectroChem","volume":"12 8","pages":""},"PeriodicalIF":3.5,"publicationDate":"2025-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/celc.202400559","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143826853","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Advancements in Seawater Electrocatalysis for Renewable Energy Conversion and Resource Extraction 海水电催化在可再生能源转化和资源开采中的研究进展

IF 3.5 4区化学

ChemElectroChem Pub Date : 2025-03-20 DOI: 10.1002/celc.202400696

Zheng Dai, Yihan Zhang, Huashuai Hu, Prof. Minghui Yang

{"title":"Advancements in Seawater Electrocatalysis for Renewable Energy Conversion and Resource Extraction","authors":"Zheng Dai, Yihan Zhang, Huashuai Hu, Prof. Minghui Yang","doi":"10.1002/celc.202400696","DOIUrl":"https://doi.org/10.1002/celc.202400696","url":null,"abstract":"Given the rising global energy demand and increasing emphasis on environmental protection, the development of renewable energy conversion technologies to replace fossil fuels has emerged as a critical research priority. Among these technologies, seawater electrocatalysis has garnered increasing attention as a high-efficiency and environmentally friendly energy conversion approach. This review summarizes recent advancements in seawater electrocatalysis for energy and resource extraction, covering the reaction mechanisms for hydrogen production via seawater electrolysis and progress in electrocatalytic materials. Specifically, we discuss the development of materials based on non-precious metals, precious metals, nonmetals, and bifunctional electrocatalysts. Additionally, the electrocatalytic conversion of inorganic pollutants (e. g., hydrazine, sulfides) and organic compounds (e. g., urea, microplastics) in seawater is reviewed, emphasizing its significance for marine resource utilization and environmental remediation. We also explore electrochemical strategies for extracting valuable metal ions, such as calcium, magnesium, uranium, and lithium, abundant in seawater. Although seawater electrocatalysis faces challenges in terms of cost and technical scalability, advancements in technology and interdisciplinary collaboration offer promising prospects for its commercialization in energy and resource extraction, with the potential to make substantial contributions to sustainable development.","PeriodicalId":142,"journal":{"name":"ChemElectroChem","volume":"12 9","pages":""},"PeriodicalIF":3.5,"publicationDate":"2025-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/celc.202400696","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143905070","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Associating Mechano-electrochemical Phenomena to Stochastic Current Events in Micro-Electrochemical Cells Containing TiNb2O7 Particles 含TiNb2O7颗粒的微电化学电池中机械电化学现象与随机电流事件的关联

IF 3.5 4区化学

ChemElectroChem Pub Date : 2025-03-20 DOI: 10.1002/celc.202400640

Dr. Jonathan Ralph Adsetts, Maddison Eisnor, Anjana R. Raju, Stephanie Bazylevych, J. Michael Sieffert, Dr. Ye Hui, Prof. Eric McCalla, Prof. Steen Brian Schougaard, Prof. Janine Mauzeroll

{"title":"Associating Mechano-electrochemical Phenomena to Stochastic Current Events in Micro-Electrochemical Cells Containing TiNb2O7 Particles","authors":"Dr. Jonathan Ralph Adsetts, Maddison Eisnor, Anjana R. Raju, Stephanie Bazylevych, J. Michael Sieffert, Dr. Ye Hui, Prof. Eric McCalla, Prof. Steen Brian Schougaard, Prof. Janine Mauzeroll","doi":"10.1002/celc.202400640","DOIUrl":"https://doi.org/10.1002/celc.202400640","url":null,"abstract":"While searching for ultra-safe high-power anodes for Li-ion batteries, TiNb2O7 (TNO) emerged as a promising material for higher energy density compared to the current state-of-the-art Li4Ti5O12 (LTO). Here, the electrochemistry of isolated carbon coated particles of both anode materials were for the first time studied using scanning electrochemical cell microscopy (SECCM). Interestingly, stochastic current event observations were made possible because of the small electrochemical cell created by SECCM and were designated as potential-driven stochastic events (PDSEs). The PDSEs were especially prominent in TNO compared to LTO. Metrics for judging the frequency and intensity of PDSEs were developed to compare the impact of different C-rates, particle masses and sizes of SECCM landings. The frequency and/or intensity of PDSEs increases with higher C-rates and larger overpotentials. Possible theories for the PDSEs were explored, including droplet electrowetting/spreading, gas evolution, (de)lithiation mechanisms, mass transfer limitations and inter-/intra- particle cracking. We speculate that the propensity of TNO to undergo PDSEs as compared to LTO is mainly related to the fact that TNO is known to crack extensively during cycling.","PeriodicalId":142,"journal":{"name":"ChemElectroChem","volume":"12 8","pages":""},"PeriodicalIF":3.5,"publicationDate":"2025-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/celc.202400640","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143826711","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Electrooxidation of 2-Propanol on Mono- and Bi-Metallic Noble Metal Nanoparticles in Alkaline Studied with Real-Time Product and Dissolution Characterization 碱性条件下单金属和双金属贵金属纳米颗粒电氧化2-丙醇的实时产物及溶出特性研究

IF 3.5 4区化学

ChemElectroChem Pub Date : 2025-03-18 DOI: 10.1002/celc.202400699

Iosif Mangoufis-Giasin, Attila Kormányos, Mária Minichová, Andreas Körner, Birk Fritsch, Karl J. J. Mayrhofer, Serhiy Cherevko, Ioannis Katsounaros

{"title":"Electrooxidation of 2-Propanol on Mono- and Bi-Metallic Noble Metal Nanoparticles in Alkaline Studied with Real-Time Product and Dissolution Characterization","authors":"Iosif Mangoufis-Giasin, Attila Kormányos, Mária Minichová, Andreas Körner, Birk Fritsch, Karl J. J. Mayrhofer, Serhiy Cherevko, Ioannis Katsounaros","doi":"10.1002/celc.202400699","DOIUrl":"https://doi.org/10.1002/celc.202400699","url":null,"abstract":"The selective electrochemical oxidation of 2-propanol to acetone can be used in fuel cells to deliver low-carbon electricity and efficiently utilize hydrogen that is stored in liquid organic hydrogen carrier molecules. Here we study the electrooxidation of 2-propanol in alkaline electrolyte, on various commercially available carbon-supported mono- and bi-metallic noble metal nanoparticles. We use voltammetry to compare the activity of different catalysts, and we combine a flow cell with real-time analytics to monitor the products of the reaction and the dissolution of metal atoms in the presence and absence of 2-propanol. While acetone if formed on all catalysts, our results show that the onset potential is the lowest for PtRu/C, Rh/C and PdRh/C, but the oxidation current for the latter reaches a much higher value before the surface is passivated, suggesting that PdRh/C would be preferred in an alkaline fuel cell that is fed with 2-propanol. Online dissolution monitoring suggests that the anode in a 2-propanol fuel cell should not be exposed to potentials above ca. +0.8 V during transient operation, i. e., during startup/shutdown conditions, to prevent dissolution of palladium and rhodium from the catalyst surface.","PeriodicalId":142,"journal":{"name":"ChemElectroChem","volume":"12 9","pages":""},"PeriodicalIF":3.5,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/celc.202400699","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143904921","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Machine Learning-Assisted Pulse Electrodeposition of Copper for Enhanced Nitrate Sensing 机器学习辅助铜脉冲电沉积增强硝酸盐传感

IF 3.5 4区化学

ChemElectroChem Pub Date : 2025-03-17 DOI: 10.1002/celc.202500013

Seyed Oveis Mirabootalebi, Annalise Mackie, Gideon Vos, Dr. Mostafa Rahimi Azghadi, Dr. Yang Liu

{"title":"Machine Learning-Assisted Pulse Electrodeposition of Copper for Enhanced Nitrate Sensing","authors":"Seyed Oveis Mirabootalebi, Annalise Mackie, Gideon Vos, Dr. Mostafa Rahimi Azghadi, Dr. Yang Liu","doi":"10.1002/celc.202500013","DOIUrl":"https://doi.org/10.1002/celc.202500013","url":null,"abstract":"Overexposure to nitrate, the most stable and prevalent form of dissolved inorganic nitrogen, harms the environment, causing soil acidification, eutrophication, and water contamination. Among various methods for nitrate detection, electrochemical sensors have attracted considerable attention due to their inherent simplicity, high sensitivity, and low cost. However, several challenges remain, including the overpotential for nitrate reduction reaction, which leads to poor selectivity, repeatability and stability. In this work, copper modified electrodes fabricated by pulse electrodeposition method were developed for the selective detection of nitrate. The electrode modification process that determines the sensing performance was investigated by machine learning approaches to understand the relationship between the sensors’ output and the copper deposition parameters. The developed networks successfully predicted the peak current, peak potential, and current stability for electrochemical reduction of nitrate based on the pulse electrodeposition parameters. Furthermore, the most important parameter that influenced the nitrate reduction peak current was revealed by the sensitivity analysis of the designed networks. The experimental results indicate that the proposed sensor achieved a sensitivity of 9.928 μA/mM and a linear range of 0.1 to 20 mM, along with satisfactory recoveries in real sample analysis.","PeriodicalId":142,"journal":{"name":"ChemElectroChem","volume":"12 10","pages":""},"PeriodicalIF":3.5,"publicationDate":"2025-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/celc.202500013","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144131537","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Front Cover: Unraveling Influential Factors of Stainless-Steel Dissolution in High-Energy Lithium Ion Batteries with LiFSI-Based Electrolytes (ChemElectroChem 6/2025) 封面：用lifsi基电解质揭示高能锂离子电池中不锈钢溶解的影响因素（ChemElectroChem 6/2025）

IF 3.5 4区化学

ChemElectroChem Pub Date : 2025-03-17 DOI: 10.1002/celc.202580601

Marian Cristian Stan, Peng Yan, Gerrit Michael Overhoff, Nick Fehlings, Hyung-Tae Kim, Robert Tobias Hinz, Tjark Thorben Klaus Ingber, Rayan Guerdelli, Christian Wölke, Martin Winter, Gunther Brunklaus, Isidora Cekic-Laskovic

{"title":"Front Cover: Unraveling Influential Factors of Stainless-Steel Dissolution in High-Energy Lithium Ion Batteries with LiFSI-Based Electrolytes (ChemElectroChem 6/2025)","authors":"Marian Cristian Stan, Peng Yan, Gerrit Michael Overhoff, Nick Fehlings, Hyung-Tae Kim, Robert Tobias Hinz, Tjark Thorben Klaus Ingber, Rayan Guerdelli, Christian Wölke, Martin Winter, Gunther Brunklaus, Isidora Cekic-Laskovic","doi":"10.1002/celc.202580601","DOIUrl":"https://doi.org/10.1002/celc.202580601","url":null,"abstract":"The front cover illustration depicts the electrochemical behavior of various stainless-steel (SUS) grades in coin cells using electrolyte formulations containing lithium hexafluorophosphate (LiPF6) and lithium bis(fluorosulfonyl)imide (LiFSI) salts. The presence of chlorine ions (Cl-) as impurities in the LiFSI salt promotes localized corrosion, leading to pitting and dissolution of SUS when the cell voltage approaches 4.2 V. Such dissolution behavior is influenced by multiple factors, with the specific SUS grade and the presence of surface coatings playing critical roles in determining corrosion resistance. More details can be found in the Research Article by Marian Cristian Stan, Isidora Cekic-Laskovic, and co-workers (DOI:10.1002/celc.202400632.\u0000 <figure>\u0000 <div><picture>\u0000 <source></source></picture>\u0000 </div>\u0000 </figure>\u0000 ","PeriodicalId":142,"journal":{"name":"ChemElectroChem","volume":"12 6","pages":""},"PeriodicalIF":3.5,"publicationDate":"2025-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/celc.202580601","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143638873","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Graded Roll-to-Roll Slot Die Coating for High-Throughput Catalyst Layer Studies 高通量催化剂层的分级辊对辊槽模涂层研究

IF 3.5 4区化学

ChemElectroChem Pub Date : 2025-03-12 DOI: 10.1002/celc.202400688

George Pätzold, Maximilian Maier, Lukas Löttert, Anna T. S. Freiberg, Prof. Dr. Simon Thiele, Dr. Dominik Dworschak

{"title":"Graded Roll-to-Roll Slot Die Coating for High-Throughput Catalyst Layer Studies","authors":"George Pätzold, Maximilian Maier, Lukas Löttert, Anna T. S. Freiberg, Prof. Dr. Simon Thiele, Dr. Dominik Dworschak","doi":"10.1002/celc.202400688","DOIUrl":"https://doi.org/10.1002/celc.202400688","url":null,"abstract":"Fuel cells play a key role in the energy transition to renewable resources. Many of these systems are based on substrates coated with thin layers containing catalyst, ionomer or support material like carbon. In order to experimentally define the optimal catalyst layer configuration, one must do step-by-step variations of its components. Currently this must be done in several single coating experiments. Here we present a tabletop roll-to-roll (R2R) slot die coating setup for producing wet film graded catalyst layers for high-throughput loading studies. In the presented work we perform a loading study for proton exchange membrane fuel cell (PEMFC) cathodes where all investigated loadings result from one single coating. The wet film thickness is measured during the continuous coating process via in-line confocal sensors and is correlated by area X-ray fluorescence (XRF) scans. Small sections of the graded catalyst layer coatings were tested in a full cell PEMFC with a 5 cm2 active area. The known loading dependency of PEMFC performance was shown and compared to previous loading studies. The results show the successful fabrication of the graded layer which can be used for both, to facilitate materials development and to increase cell performance in stacks.","PeriodicalId":142,"journal":{"name":"ChemElectroChem","volume":"12 10","pages":""},"PeriodicalIF":3.5,"publicationDate":"2025-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/celc.202400688","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144131507","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0