ChemElectroChem最新文献_第9页

Open-ESyn: A 3D-Printed Toolkit for Expanded ElectraSyn Functionality and Reproducibility for Electrosynthesis Open-ESyn：用于扩展电合成功能和再现性的三维打印工具包

IF 3.5 4区化学

ChemElectroChem Pub Date : 2024-10-21 DOI: 10.1002/celc.202400454

Anthony Choi, David M. Heard, Calum S. Haydon, Alastair J. J. Lennox

引用次数: 0

Lithium Demand and Cyclability Trade-Off in Conductive Nanostructure Scaffolds in Terms of Different Tortuosity Parameters 不同曲率参数下导电纳米结构支架的锂需求与循环能力权衡

IF 3.5 4区化学

ChemElectroChem Pub Date : 2024-10-21 DOI: 10.1002/celc.202400428

Seyed Ali Hoseini, Shams Mohajerzadeh, Zeinab Sanaee

{"title":"Lithium Demand and Cyclability Trade-Off in Conductive Nanostructure Scaffolds in Terms of Different Tortuosity Parameters","authors":"Seyed Ali Hoseini, Shams Mohajerzadeh, Zeinab Sanaee","doi":"10.1002/celc.202400428","DOIUrl":"https://doi.org/10.1002/celc.202400428","url":null,"abstract":"Through alteration of the polarity of DC plasma during the growth of carbon nanotubes in a PECVD reactor, significantly different morphologies of such species have been achieved. By using this approach, for the first time, both Half-aligned and Entangled structures were synthesized, along with Full-aligned carbon nanotubes, introducing three binder-free electrodes with various levels of tortuosity. The crucial parameter and influential effect of tortuosity in these three-dimensional nanostructure scaffolds for application in lithium-ion batteries were investigated. Previous research findings suggested that increasing the tortuosity of the conductive scaffolds leads to preferential accumulation of lithium at the top surface and causes the loss of capacity in subsequent charge-discharge cycles. Our finding reveals that there exists a trade-off between lithium-demand, capacity, and preferential accumulation of lithium at the top surface. Among the presented scaffolds, the Half-aligned MWCNTs was able to maintain a high capacity of 876.9 mAh/g over more than 300 cycles, and demonstrate capacity improvement during this period and excellent rate capability, even at a rate of 5 C. This capacity is almost three times that can be achieved with graphite, showcasing promising and outstanding results for carbon nanotubes.","PeriodicalId":142,"journal":{"name":"ChemElectroChem","volume":"11 21","pages":""},"PeriodicalIF":3.5,"publicationDate":"2024-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/celc.202400428","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142666066","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

Microenvironment Manipulation Strategies for Acidic CO2 Electrolysis 酸性二氧化碳电解的微环境控制策略

IF 3.5 4区化学

ChemElectroChem Pub Date : 2024-10-17 DOI: 10.1002/celc.202400475

Geng Li, Yong Liu, Tanglue Feng, Ruquan Ye

{"title":"Microenvironment Manipulation Strategies for Acidic CO2 Electrolysis","authors":"Geng Li, Yong Liu, Tanglue Feng, Ruquan Ye","doi":"10.1002/celc.202400475","DOIUrl":"https://doi.org/10.1002/celc.202400475","url":null,"abstract":"The electrochemical reduction of CO2 (CO2RR) has gained significant attention due to its potential to reduce carbon emissions and produce valuable fuels and chemicals. CO2RR is typically carried out in neutral or alkaline conditions, while challenges such as the carbon crossover and salt precipitate can hinder the practical application. Conducting CO2RR in acidic media presents a promising method to address these issues, although it faces the problem of low efficiency and poor catalysis stability. Regulating the interface/surface microenvironment near the catalysts is crucial to minimize the competitive hydrogen evolution reaction and enhance CO2RR activity and long-term stability. This review outlines recent advancements in acidic CO2RR, emphasizing various microenvironment engineering strategies for optimizing the CO2RR kinetics including electrolyte composition manipulation, catalyst design, electrode modification and cell configuration optimization. Additionally, the review addresses challenges into developing practical and cost-effective CO2RR systems.","PeriodicalId":142,"journal":{"name":"ChemElectroChem","volume":"11 21","pages":""},"PeriodicalIF":3.5,"publicationDate":"2024-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/celc.202400475","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142665977","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 Separators with Very High Garnet Content for Solid-State Batteries 用于固态电池的石榴石含量极高的复合分离器

IF 3.5 4区化学

ChemElectroChem Pub Date : 2024-10-17 DOI: 10.1002/celc.202400323

Kevin Vattappara, Dr. Martin Finsterbusch, Prof. Dr. Dina Fattakhova-Rohlfing, Dr. Andriy Kvasha

{"title":"Composite Separators with Very High Garnet Content for Solid-State Batteries","authors":"Kevin Vattappara, Dr. Martin Finsterbusch, Prof. Dr. Dina Fattakhova-Rohlfing, Dr. Andriy Kvasha","doi":"10.1002/celc.202400323","DOIUrl":"https://doi.org/10.1002/celc.202400323","url":null,"abstract":"Lithium-metal solid-state batteries are attractive as next generation of Li-ion batteries due to higher safety and potentially higher energy density. To improve processability, solid-composite separators combine advantages of inorganic and polymer separators in hybrid structure. We report a systematic approach to fabricate composite separators with high content (90–95 wt %) of ceramic Li-ion conducting Li6.45Al0.05La3Zr1.6Ta0.4O12 (LLZO) powder embedded in a polyethylene oxide (PEO)-LiTFSI (20 : 1) matrix and understand factors affecting their properties and performance. Separators with good mechanical flexibility and excellent thermal stability were obtained, by optimizing materials and processing parameters. It was found that PEO molecular weight strongly influences the microstructure and electrochemical properties of the separators. In optimized separator with 90 wt % of LLZO and PEO with Mw 300,000 g/mol, a total ionic conductivity of 1.4×10−5 S/cm at 60 °C was achieved. The ceramic-rich separator showed excellent long-term cycling stability for more than 460 cycles (1000 h) at 0.1 mA/cm2 in Li/Li symmetrical cells and achieved a critical current density of 0.25 mA/cm2. The separators also enabled initial discharge capacities of more than 160 mAh/g in full cells with Li metal anode and composite solid-state LiNi0.6Co0.2Mn0.2O2 cathode, although rapid capacity fade was observed after 10 cycles in fully solid-state configuration.","PeriodicalId":142,"journal":{"name":"ChemElectroChem","volume":"11 21","pages":""},"PeriodicalIF":3.5,"publicationDate":"2024-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/celc.202400323","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142666034","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: 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}

引用次数: 0

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