ChemElectroChem最新文献_第3页

Front Cover: Influence of Linker Group on Bipolar Redox-Active Molecule Performance in Non-Aqueous Redox Flow Batteries (ChemElectroChem 20/2024) 封面：链接基团对非水性氧化还原流电池中双极氧化还原活性分子性能的影响（ChemElectroChem 20/2024）

IF 3.5 4区化学

ChemElectroChem Pub Date : 2024-10-16 DOI: 10.1002/celc.202482001

Samantha Macchi, Chad L. Staiger, Jesse Cordova, Cassandria Poirier, Travis M. Anderson

引用次数: 0

Performance Effects of Different Shutdown Methods on Three Electrode Materials for Electromethanogenesis 不同关机方法对三种电解甲烷电极材料性能的影响

IF 3.5 4区化学

ChemElectroChem Pub Date : 2024-10-16 DOI: 10.1002/celc.202400372

Nils Rohbohm, Maren Lang, Johannes Erben, Kurt Gemeinhardt, Nitant Patel, Ivan K. Ilic, Doris Hafenbradl, Jose Rodrigo Quejigo, Largus T. Angenent

{"title":"Performance Effects of Different Shutdown Methods on Three Electrode Materials for Electromethanogenesis","authors":"Nils Rohbohm, Maren Lang, Johannes Erben, Kurt Gemeinhardt, Nitant Patel, Ivan K. Ilic, Doris Hafenbradl, Jose Rodrigo Quejigo, Largus T. Angenent","doi":"10.1002/celc.202400372","DOIUrl":"https://doi.org/10.1002/celc.202400372","url":null,"abstract":"Industrial applications of microbial electrochemical systems will require regular maintenance shutdowns, involving inspections and component replacements to extend the lifespan of the system. Here, we examined the impact of such shutdowns on the performance of three electrode materials (i. e., platinized titanium, graphite, and nickel) as cathodes in a microbial electrochemical system that would be used for electromethanogenesis in power-to-gas applications. We focused on methane (CH4) production from hydrogen (H2) and carbon dioxide (CO2) using Methanothermobacter thermautotrophicus. We showed that the platinized titanium cathode resulted in high volumetric CH4 production rates and Coulombic efficiencies. Using a graphite cathode would be more cost-effective than using the platinized titanium cathode in microbial electrochemical systems, but showed an inferior performance. The microbial electrochemical system with the nickel cathode showed improvements compared to the graphite cathode. Additionally, this system with a nickel cathode demonstrated the fastest recovery during a shutdown experiment compared to the other two cathodes. Fluctuations in pH and nickel concentrations in the catholyte during power interruptions affected CH4 production recovery in the system with the nickel cathode. This research enhances understanding of the integration of biological and electrochemical processes in microbial electrochemical systems, providing insights into electrode selection and operating strategies for effective and sustainable CH4 production.","PeriodicalId":142,"journal":{"name":"ChemElectroChem","volume":"11 21","pages":""},"PeriodicalIF":3.5,"publicationDate":"2024-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/celc.202400372","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142665942","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}

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Cover Feature: Redox−Acid/Base Phase Diagrams as an Entry to Computational Redox Chemistry (ChemElectroChem 20/2024) 封面专题：氧化还原酸碱相图作为计算氧化还原化学的切入点（ChemElectroChem 20/2024）

IF 3.5 4区化学

ChemElectroChem Pub Date : 2024-10-16 DOI: 10.1002/celc.202482002

Patrick M. Becker, Katja Heinze, Biprajit Sarkar, Johannes Kästner

引用次数: 0

Comparative Analysis of Thermal Activation on Felts and Continuous Carbon Filament Electrodes for Vanadium Redox Flow Batteries 钒氧化还原液流电池用毡状电极和连续碳丝电极的热活化对比分析

IF 3.5 4区化学

ChemElectroChem Pub Date : 2024-10-08 DOI: 10.1002/celc.202400417

Noemí Aguiló-Aguayo, Toni Alena Ebert, Roger Amade, Enric Bertran, Rogelio Ospina, Jhonatan Rodriguez-Pereira, Carlos Ponce de León, Thomas Bechtold, Tung Pham

{"title":"Comparative Analysis of Thermal Activation on Felts and Continuous Carbon Filament Electrodes for Vanadium Redox Flow Batteries","authors":"Noemí Aguiló-Aguayo, Toni Alena Ebert, Roger Amade, Enric Bertran, Rogelio Ospina, Jhonatan Rodriguez-Pereira, Carlos Ponce de León, Thomas Bechtold, Tung Pham","doi":"10.1002/celc.202400417","DOIUrl":"https://doi.org/10.1002/celc.202400417","url":null,"abstract":"Thermal treatments are commonly used to improve electrode kinetics in vanadium redox flow batteries (VRFB). The impact of the widely adopted thermal treatment—400 °C for least 24 hours—was investigated on polyacrylonitrile (PAN)-based continuous carbon filaments (tows) and compared to PAN-based graphite felts. Surface properties were assessed with scanning electron microscopy (SEM), Raman spectroscopy, X-ray photoelectron spectroscopy (XPS) and wettability measurements. The electrode activity was investigated via electrochemical impedance spectroscopy (EIS). Charge-transfer resistances and the constant phase element parameters related to the electric double layer were determined, revealing a correlation between enhanced electrode activity and increased double layer across all electrodes. An 8-hour 400 °C thermal treatment was sufficient to improve electrode activity for tows, whereas felts required longer durations, up to 24 hours, attributed to differences in the carbonization process employed for each material, with the tows undergoing continuous processing and the felts following a batch process. Three-electrode half-cell EIS measurements were conducted to elucidate positive and negative electrode contributions. Activated continuous carbon filament electrodes exhibited consistent electrode activities in both the catholyte (VO2+/VO2+) and anolyte (V3+/V2+), whereas the electrochemical activity of felts was limited by the electrode deactivation in the anolyte.","PeriodicalId":142,"journal":{"name":"ChemElectroChem","volume":"11 21","pages":""},"PeriodicalIF":3.5,"publicationDate":"2024-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/celc.202400417","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142665833","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

Voltammetric Characterization and Quantification of the Cocaine Analog Nitracaine 可卡因类似物硝基卡因的伏安特性分析与定量

IF 3.5 4区化学

ChemElectroChem Pub Date : 2024-10-02 DOI: 10.1002/celc.202400386

Giancarla Alberti, Alessandra Bonanni, Protti Stefano, Federica Baldi, Daniele Merli

引用次数: 0

High-performance Porous Electrodes for Flow Batteries: Improvements of Specific Surface Areas and Reaction Kinetics 用于液流电池的高性能多孔电极：改善比表面积和反应动力学

IF 3.5 4区化学

ChemElectroChem Pub Date : 2024-10-02 DOI: 10.1002/celc.202400460

Lyuming Pan, Zixiao Guo, Hucheng Li, Yilin Wang, Haoyao Rao, Qinping Jian, Jing Sun, Jiayou Ren, Zhenyu Wang, Bin Liu, Meisheng Han, Yubai Li, Xinzhuang Fan, Wenjia Li, Lei Wei

{"title":"High-performance Porous Electrodes for Flow Batteries: Improvements of Specific Surface Areas and Reaction Kinetics","authors":"Lyuming Pan, Zixiao Guo, Hucheng Li, Yilin Wang, Haoyao Rao, Qinping Jian, Jing Sun, Jiayou Ren, Zhenyu Wang, Bin Liu, Meisheng Han, Yubai Li, Xinzhuang Fan, Wenjia Li, Lei Wei","doi":"10.1002/celc.202400460","DOIUrl":"https://doi.org/10.1002/celc.202400460","url":null,"abstract":"Electrodes, which offer sites for mass transfer and redox reactions, play a crucial role in determining the energy efficiencies and power densities of redox flow batteries. This review focuses on various approaches to enhancing electrode performance, particularly the methods of surface etching and catalyst deposition, as well as some other advanced strategies for regulating electrode surface properties. These approaches aim to increase active sites and enhance kinetics for the redox reactions, which are crucial for elevating power density and electrolyte utilization, eventually determining the performance of the flow battery. Highlighting the need for interdisciplinary research, this mini-review suggests that future advancements in electrode design will significantly impact the commercial viability and adoption of redox flow batteries in sustainable energy storage solutions.","PeriodicalId":142,"journal":{"name":"ChemElectroChem","volume":"11 21","pages":""},"PeriodicalIF":3.5,"publicationDate":"2024-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/celc.202400460","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142665982","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

Redox−Acid/Base Phase Diagrams as an Entry to Computational Redox Chemistry 氧化还原酸碱相图作为计算氧化还原化学的切入点

IF 3.5 4区化学

ChemElectroChem Pub Date : 2024-10-02 DOI: 10.1002/celc.202400301

Patrick M. Becker, Katja Heinze, Biprajit Sarkar, Johannes Kästner

{"title":"Redox−Acid/Base Phase Diagrams as an Entry to Computational Redox Chemistry","authors":"Patrick M. Becker, Katja Heinze, Biprajit Sarkar, Johannes Kästner","doi":"10.1002/celc.202400301","DOIUrl":"https://doi.org/10.1002/celc.202400301","url":null,"abstract":"The rapid depletion of fossil fuels and the change from conventional energy supply to so-called sustainable and renewable energy sources have led to a renaissance of electrochemical, photochemical, and photoelectrochemical methods for chemical synthesis. While drastic experimental improvements have been realized in recent years, systematic computational studies of these types of reactions are, however, rather limited caused by a lack of suitable representations. Herein we present a generalized method to investigate and analyze a chemical system with respect to its redox- and acid/base-properties based on Gibbs free-energy differences. We represent the results in a clear manner by means of redox−acid/base phase diagrams. Motivated by computational needs, the presented method is a direct link between experimentally measurable values and Gibbs free-energy profiles, connecting experiment and simulation. Thus, it serves as an entry to systematic computational studies of reactions, which involve a combination of electron transfers and acid/base-chemical reaction steps, because it enables the representation of both thermodynamic and kinetic properties. The presented method is applied to four exemplary systems: Phenol, dicobaltocenium amine as a proton-coupled electron transfer (PCET) reactant, and two porphyrin NiII catalysts for the electrocatalytic hydrogen evolution reaction (HER).","PeriodicalId":142,"journal":{"name":"ChemElectroChem","volume":"11 20","pages":""},"PeriodicalIF":3.5,"publicationDate":"2024-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/celc.202400301","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142443451","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

Influence of Linker Group on Bipolar Redox-Active Molecule Performance in Non-Aqueous Redox Flow Batteries 链接基团对非水性氧化还原流电池中双极氧化还原活性分子性能的影响

IF 3.5 4区化学

ChemElectroChem Pub Date : 2024-10-02 DOI: 10.1002/celc.202400450

Samantha Macchi, Chad L. Staiger, Jesse Cordova, Cassandria Poirier, Travis M. Anderson

{"title":"Influence of Linker Group on Bipolar Redox-Active Molecule Performance in Non-Aqueous Redox Flow Batteries","authors":"Samantha Macchi, Chad L. Staiger, Jesse Cordova, Cassandria Poirier, Travis M. Anderson","doi":"10.1002/celc.202400450","DOIUrl":"https://doi.org/10.1002/celc.202400450","url":null,"abstract":"Redox flow batteries (RFBs) are an attractive choice for stationary energy storage of renewables such as solar and wind. Non-aqueous redox flow batteries (NARFBs) have garnered broad interest due to their high voltage operation compared to their aqueous counterparts. Further, the utilization of bipolar redox-active molecules (BRMs) is a practical way to alleviate crossover faced by asymmetric RFBs. In this work, ferrocene (Fc) and phthalimide (PI) are covalently linked with various tethering groups which vary in structure and length. The compiled results suggest that the length and steric shielding ability of the linker group can greatly influence the stability and overall performance of Fc-n-PI BRM-based NARFBs. Primary sources of capacity loss are found to be BRM degradation for straight chain spacers <6 carbons and membrane (Nafion) fouling. Fc-hexyl-PI provided the most stable battery cycling and coulombic efficiencies of >98 % over 100 cycles (~13 days). NARFB using Fc-hexyl-PI as an active material exhibited high working voltage (1.93 V) and maximum capacity (1.28 Ah L−1). Additionally, this work highlights rational strategies to improve cycling stability and optimize NARFB performance.","PeriodicalId":142,"journal":{"name":"ChemElectroChem","volume":"11 20","pages":""},"PeriodicalIF":3.5,"publicationDate":"2024-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/celc.202400450","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142443450","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

Influence of Molecular Weight and End Groups on Ion Transport in Weakly and Strongly Coordinating Polymer Electrolytes 分子量和端基对弱配位和强配位聚合物电解质中离子迁移的影响

IF 3.5 4区化学

ChemElectroChem Pub Date : 2024-10-02 DOI: 10.1002/celc.202400415

Rassmus Andersson, Samuel Emilsson, Guiomar Hernández, Mats Johansson, Jonas Mindemark

{"title":"Influence of Molecular Weight and End Groups on Ion Transport in Weakly and Strongly Coordinating Polymer Electrolytes","authors":"Rassmus Andersson, Samuel Emilsson, Guiomar Hernández, Mats Johansson, Jonas Mindemark","doi":"10.1002/celc.202400415","DOIUrl":"https://doi.org/10.1002/celc.202400415","url":null,"abstract":"In the development of polymer electrolytes, the understanding of the complex interplay of factors that affect ion transport is of importance. In this study, the strongly coordinating and flexible poly (ethylene oxide) (PEO) is compared to the weakly coordinating and stiff poly (trimethylene carbonate) (PTMC) as opposing model systems. The effect of molecular weight (Mn) and end group chemistry on the physical properties: glass transition temperature (Tg) and viscosity (η) and ion transport properties: transference number (T+), ion coordination strength and ionic conductivities were investigated. The cation transference number (T+) showed the opposite dependence on Mn for PEO and PTMC, decreasing at low Mn for PTMC and increasing for PEO. This was shown to be highly dependent on the ion coordination strength of the system regardless of whether the end group was OH or if the chains were end-capped. Although the coordination is mainly of the cations in the systems, the differences in T+ were due to differences in anion rather than cation conductivity, with a similar Li+ conductivity across the polymer series when accounting for the differences in segmental mobility.","PeriodicalId":142,"journal":{"name":"ChemElectroChem","volume":"11 20","pages":""},"PeriodicalIF":3.5,"publicationDate":"2024-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/celc.202400415","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142443453","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

Composite PEDOT:PSS-PEO Layers for Improving Lithium Batteries** 用于改进锂电池的 PEDOT:PSS-PEO 复合层**

IF 3.5 4区化学

ChemElectroChem Pub Date : 2024-10-02 DOI: 10.1002/celc.202400458

Timothy G. Ritter, Yong Il Kim, Breno Bezerra De Souza, Xinnian Wang, Yayue Pan, Vitaliy Yurkiv, Alexander L. Yarin, Reza Shahbazian-Yassar

{"title":"Composite PEDOT:PSS-PEO Layers for Improving Lithium Batteries**","authors":"Timothy G. Ritter, Yong Il Kim, Breno Bezerra De Souza, Xinnian Wang, Yayue Pan, Vitaliy Yurkiv, Alexander L. Yarin, Reza Shahbazian-Yassar","doi":"10.1002/celc.202400458","DOIUrl":"https://doi.org/10.1002/celc.202400458","url":null,"abstract":"This work investigates the application of poly(3,4-ethylenedioxythiophene) polystyrenesulfonate (PEDOT:PSS) with polyethylene oxide (PEO) in lithium batteries (LIBs). This composite film comprising PEDOT:PSS and PEO was 3D printed onto a carbon nanofiber (CNF) substrate to serve as a layer between the polypropylene (PP) separator and the lithium anode in LIBs. The resulting CNF-PEDOT:PSS-PEO film exhibited superior mechanical and thermal properties compared to conventional PP separators. Mechanical tests revealed a high Young's modulus and puncture strength for the composite film. Thermal stability tests indicated that the CNF-PEDOT:PSS-PEO film remained stable at higher temperatures compared to the commercial PP separator, and combustion tests confirmed its superior fire-resistance properties. In terms of conductivity, the composite film maintained comparable ionic conductivity to the commercial PP separator. Electrochemical tests demonstrated that LIBs incorporating the CNF-PEDOT:PSS-PEO film exhibited slight improvement in cycling performance, with a 7.9 % increase in long-term cycling capacity compared to LIBs using only the commercial PP separator. These findings indicate that the developed CNF-PEDOT:PSS-PEO composite film holds promise to improve safety, while maintaining the electrochemical performance of LIBs by reducing dendrite formation and enhancing thermal stability.","PeriodicalId":142,"journal":{"name":"ChemElectroChem","volume":"11 20","pages":""},"PeriodicalIF":3.5,"publicationDate":"2024-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/celc.202400458","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142443407","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