ChemElectroChem最新文献_第8页

Electrolyte Additives in Zinc-Based Flow Batteries: From Molecular Mechanisms to Interfacial Control 锌基液流电池中的电解质添加剂：从分子机制到界面控制

IF 3.5 4区化学

ChemElectroChem Pub Date : 2025-11-28 DOI: 10.1002/celc.202500301

Hyeongbeen Kim, Seongbin Kang, Daeun Kim, Jinyeoung Choi, Ki Min Roh, Yosep Han, Minjoon Park

引用次数: 0

Simple Fabrication Method of Needle-Type Carbon-Disk Microelectrodes Using Conductive Thermoplastics 利用导电热塑性塑料制备针状碳盘微电极的简易方法

IF 3.5 4区化学

ChemElectroChem Pub Date : 2025-11-26 DOI: 10.1002/celc.202500335

Luiz F. Z. Felipe, Gabriel N. Meloni

{"title":"Simple Fabrication Method of Needle-Type Carbon-Disk Microelectrodes Using Conductive Thermoplastics","authors":"Luiz F. Z. Felipe, Gabriel N. Meloni","doi":"10.1002/celc.202500335","DOIUrl":"https://doi.org/10.1002/celc.202500335","url":null,"abstract":"Carbon-based microelectrodes are extensively used for sensing applications and space-resolved electrochemistry experiments like scanning electrochemical microscopy (SECM). For the later, needle-type disk microelectrodes, having a thin layer of insulator around the conductive disk, are of great interest due to their mass transport characteristics and small dimensions, allowing them to be brought to close proximity of the substrate. Existing fabrication methods for carbon microelectrodes use carbon fibers or the deposition of pyrolytic carbon, which can limit the possible radii of the fabricated microelectrodes and reproducibility. A simple method is presented for fabricating needle-type carbon-disk microelectrodes using conductive thermoplastic filaments that are usually employed for 3D printing. Using the heat of a candle to melt the thermoplastic inside micro and nanopipettes, microelectrodes with radii smaller than 30 µm are fabricated. Through experiments, the electrodic surface is revealed to be partially blocked, with a complex relation between the size and interspacing of the conductive sites. Simulations clarify the surface properties and demonstrate the suitability of these electrodes for SECM. As a proof-of-concept, the carbon surface is evaluated for sensing, showing that the low capacitance of the electrodes and carbon surface can be used for dopamine sensing and voltammetric pH measurements.","PeriodicalId":142,"journal":{"name":"ChemElectroChem","volume":"13 1","pages":""},"PeriodicalIF":3.5,"publicationDate":"2025-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://chemistry-europe.onlinelibrary.wiley.com/doi/epdf/10.1002/celc.202500335","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146096567","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

Valorization of Glycerol Through 2,2,6,6-Tetramethyl-1-Piperidine-N-Oxyl (TEMPO)-Catalyzed Electrochemical Oxidation with High C3 Product Selectivity: Impact of Stirred Bulk Versus Flow Electrolysis 2,2,6,6-四甲基-1-哌啶- n -氧（TEMPO）催化的高C3产物选择性电化学氧化对甘油的活化作用：搅拌体积与流动电解的影响

IF 3.5 4区化学

ChemElectroChem Pub Date : 2025-11-26 DOI: 10.1002/celc.202500337

Yuanya Zhao, Rachel N. Gaines, Adolfo I. B. Romo, Juan A. Rojas, Paul J. A. Kenis, Joaquín Rodríguez-López

{"title":"Valorization of Glycerol Through 2,2,6,6-Tetramethyl-1-Piperidine-N-Oxyl (TEMPO)-Catalyzed Electrochemical Oxidation with High C3 Product Selectivity: Impact of Stirred Bulk Versus Flow Electrolysis","authors":"Yuanya Zhao, Rachel N. Gaines, Adolfo I. B. Romo, Juan A. Rojas, Paul J. A. Kenis, Joaquín Rodríguez-López","doi":"10.1002/celc.202500337","DOIUrl":"https://doi.org/10.1002/celc.202500337","url":null,"abstract":"Conversion of glycerol to value-added products is an attractive solution to the oversupply of this byproduct of biofuel production. The glycerol oxidation reaction (GOR) may form product mixtures derived from the scission of the three-carbon (C3) glycerol backbone, generating one- (C1) or two-carbon (C2) species. Here, the bulk and flow electrolysis (FE) of the 2,2,6,6-tetramethyl-1-piperidine-N-oxyl (TEMPO)-mediated GOR reaction is explored to produce a valorized C3 product, highlighting key selectivity differences between the two methods despite using the same optimized electrolyte composition. Increasing the pH of the solution dramatically increases GOR activity but presents a tradeoff with the stability of TEMPO. At an optimal pH of 10.6 in carbonate buffer in a batch reactor, the reaction proceeds with higher than 90% yield via a 10-electron oxidation to mesoxalic acid, a C3 product. FE at much lower Reynolds number yields significantly lower selectivity toward C3, demonstrating a high sensitivity to mass transport. The work sheds light on the opportunities toward selectively producing C3 products from GOR as well as the importance of mass transfer considerations for the valorization of this key bio-feedstock and for others involving mediated electrocatalysis.","PeriodicalId":142,"journal":{"name":"ChemElectroChem","volume":"13 1","pages":""},"PeriodicalIF":3.5,"publicationDate":"2025-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://chemistry-europe.onlinelibrary.wiley.com/doi/epdf/10.1002/celc.202500337","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146007795","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

Challenges in Quantitative Scanning Electrochemical Microscopy for Corrosion Studies of Ferrous Materials: The Role of Redox Mediator–Substrate Interactions 定量扫描电化学显微镜在铁材料腐蚀研究中的挑战：氧化还原介质-基质相互作用的作用

IF 3.5 4区化学

ChemElectroChem Pub Date : 2025-11-22 DOI: 10.1002/celc.202500334

Ali Ebrahimzadeh Pilehrood, Parker Kiriakakos, Reza Moshrefi, Liudmila Strelnikova, Emmanuel Mena-Morcillo, Samantha Michelle Gateman

{"title":"Challenges in Quantitative Scanning Electrochemical Microscopy for Corrosion Studies of Ferrous Materials: The Role of Redox Mediator–Substrate Interactions","authors":"Ali Ebrahimzadeh Pilehrood, Parker Kiriakakos, Reza Moshrefi, Liudmila Strelnikova, Emmanuel Mena-Morcillo, Samantha Michelle Gateman","doi":"10.1002/celc.202500334","DOIUrl":"https://doi.org/10.1002/celc.202500334","url":null,"abstract":"A key challenge in using scanning electrochemical microscopy (SECM) in feedback mode for corrosion studies is decoupling the redox mediator's (RM) influence from the intrinsic reactivity of the substrate. In this work, macro- and microelectrochemical experiments are combined with finite element modeling to investigate how two widely used RMs, ferrocenemethanol (FcMeOH) and hexaammineruthenium (III) chloride ( <math></math>), affect the corrosion behavior and SECM response of iron and stainless steel (SS-316L). The apparent rate constants extracted from SECM measurements highlight a clear dependence on substrate passivation. SECM measurements over iron revealed that the applied potential required to induce FcMeOH oxidation causes ultramicroelectrode fouling via iron oxide deposition, thereby compromising measurement reliability. In contrast, <math></math> undergoes reduction at the active Fe surface, leading to local RM depletion and a feedback response characterized by a steeper current decay than typically observed over passive surfaces. On SS-316L, negative feedback was observed for both mediators, reflecting the presence of a stable passive film. This study identifies key pitfalls in SECM corrosion analysis and demonstrates how RM–substrate interactions can affect interpretation. These findings offer practical guidance for improving the quantitative reliability of SECM in probing localized corrosion processes of ferrous alloys.","PeriodicalId":142,"journal":{"name":"ChemElectroChem","volume":"13 1","pages":""},"PeriodicalIF":3.5,"publicationDate":"2025-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://chemistry-europe.onlinelibrary.wiley.com/doi/epdf/10.1002/celc.202500334","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146002596","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

Insights into Electro-Oxidative Dehydrogenation of Aldehydes on Copper Foam: The Role of Electrode Design, Side Reactions, and Substrate Properties 对泡沫铜上醛的电氧化脱氢的见解：电极设计的作用，副反应，和底物性质

IF 3.5 4区化学

ChemElectroChem Pub Date : 2025-11-21 DOI: 10.1002/celc.202500344

Sonja D. Mürtz, Benni Zou, Simon Derichs, Justus Kümper, Regina Palkovits

{"title":"Insights into Electro-Oxidative Dehydrogenation of Aldehydes on Copper Foam: The Role of Electrode Design, Side Reactions, and Substrate Properties","authors":"Sonja D. Mürtz, Benni Zou, Simon Derichs, Justus Kümper, Regina Palkovits","doi":"10.1002/celc.202500344","DOIUrl":"https://doi.org/10.1002/celc.202500344","url":null,"abstract":"A sustainable alternative to fossil-based energy sources is green hydrogen, which is produced by electrolysis, but the high energy demand of the oxygen evolution reaction (OER) limits its overall efficiency. Recent efforts aim to replace OER with low-potential anode reactions, such as the electro-oxidative dehydrogenation (EOD) of aldehydes, which simultaneously yield valuable chemical products. However, the mechanistic understanding of the EOD and the influence of catalyst structure and reaction conditions on selectivity and efficiency remain limited. Here, it is shown that the EOD of aldehydes on modified copper foam electrodes is strongly affected by electrode morphology, substrate concentration and structure, as well as electrolyte composition. It is demonstrated that increasing the electrochemically active surface area enhances current density up to a morphological diffusion limit reaching 110 mA cm−2 at 0.3 V versus reversible hydrogen electrode (RHE). Higher furfural concentrations increase current density but simultaneously promote the non-faradaic Cannizzaro reaction, thereby reducing faradaic efficiency. Lower KOH concentrations partially suppress this side reaction, though 1 M remains optimal for EOD. Substrate screening reveals that electron-rich aldehydes impede the reaction, likely by hindering intermediate formation. The findings highlight the importance of the electrode morphology and the critical balance between substrate availability and parasitic side reactions in aldehyde EOD, offering practical guidelines for catalyst design and process optimization for low-potential hydrogen production.","PeriodicalId":142,"journal":{"name":"ChemElectroChem","volume":"13 1","pages":""},"PeriodicalIF":3.5,"publicationDate":"2025-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://chemistry-europe.onlinelibrary.wiley.com/doi/epdf/10.1002/celc.202500344","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146002551","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: Dynamics of the Galvanic Replacement Reaction of Silver by Gold: Phenomenological Models for Open Circuit Potential-Time Responsive Indicator (ChemElectroChem 22/2025) 封面：银被金的电替代反应动力学：开路电位-时间响应指示器的现象学模型（ChemElectroChem 22/2025）

IF 3.5 4区化学

ChemElectroChem Pub Date : 2025-11-19 DOI: 10.1002/celc.70107

Bonito Aristide Karamoko, Yaovi Holade

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Hydrothermally Carbonized Corncob-Derived Hard Carbon Anodes for High-Performance Sodium-Ion Batteries 用于高性能钠离子电池的水热碳化玉米芯硬碳阳极

IF 3.5 4区化学

ChemElectroChem Pub Date : 2025-11-19 DOI: 10.1002/celc.202500396

Alessia Rinaldi, Niyaz Ahmad, Giacomo Magnani, Michele Sidoli, Silvio Scaravonati, Michele Setti, Marion Bermont, Raphaël Janot, Da Huo, Vincenzo Vezzoni, Chiara Milanese, Mauro Riccò, Daniele Pontiroli

{"title":"Hydrothermally Carbonized Corncob-Derived Hard Carbon Anodes for High-Performance Sodium-Ion Batteries","authors":"Alessia Rinaldi, Niyaz Ahmad, Giacomo Magnani, Michele Sidoli, Silvio Scaravonati, Michele Setti, Marion Bermont, Raphaël Janot, Da Huo, Vincenzo Vezzoni, Chiara Milanese, Mauro Riccò, Daniele Pontiroli","doi":"10.1002/celc.202500396","DOIUrl":"https://doi.org/10.1002/celc.202500396","url":null,"abstract":"The selection of an effective anode material is a core component in the development of sodium-ion batteries (NIBs) as an achievable alternative to lithium-ion batteries. The foremost considerations include cost-effectiveness, availability, sustainability, and the physicochemical properties required for sodium-ion storage. Biomass-derived hard carbon is among the most promising anode materials due to its favorable structural characteristics, high sodium storage capacity, and low cost of raw material sourcing. However, the main limitations of hard carbon anodes remain restricted by their low initial Coulombic efficiency (ICE) and specific capacity. Herein, corncob-derived hard carbon anodes are synthesized using a two-step process involving hydrothermal carbonization and high-temperature annealing at 1000, 1250, and 1500 °C. The structural and electrochemical properties of the resulting materials are systematically investigated using multiple characterization techniques. Electrochemical characterization demonstrates that the hard carbon annealed at 1500 °C exhibits the highest reversible capacity of 319 mAh g−1 at a C/20 rate, along with an ICE of 89%, attributed to optimized porosity, improved structural order and reduced defect density. These findings highlight the potential of corncob-derived hard carbon as a sustainable and efficient anode material for next-generation NIBs.","PeriodicalId":142,"journal":{"name":"ChemElectroChem","volume":"12 24","pages":""},"PeriodicalIF":3.5,"publicationDate":"2025-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://chemistry-europe.onlinelibrary.wiley.com/doi/epdf/10.1002/celc.202500396","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145699119","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

Engineering Alloying and Conversion Interlayers for Anode-Less Solid-State Batteries 无阳极固态电池的工程合金化和转换中间层

IF 3.5 4区化学

ChemElectroChem Pub Date : 2025-11-12 DOI: 10.1002/celc.202500346

Amna Rafique, Rosalía Cid, Arianna Pesce, Senentxu Lanceros-Mendez, Montse Casas-Cabanas, Lorenzo Fallarino, Pedro López-Aranguren

{"title":"Engineering Alloying and Conversion Interlayers for Anode-Less Solid-State Batteries","authors":"Amna Rafique, Rosalía Cid, Arianna Pesce, Senentxu Lanceros-Mendez, Montse Casas-Cabanas, Lorenzo Fallarino, Pedro López-Aranguren","doi":"10.1002/celc.202500346","DOIUrl":"https://doi.org/10.1002/celc.202500346","url":null,"abstract":"Anode-less solid-state batteries offer a pathway to maximize energy density while simplifying device manufacturing. However, the absence of an initial lithium (Li) reservoir demands precise control over Li deposition, a process usually hindered by interfacial instability and the lithiophobic nature of commonly employed current collectors (CCs). Therefore, effective interfacial design is crucial. In this regard, metallic and oxide interlayers offer a promising strategy to improve Li deposition, but detailed insights into their electrochemical behavior in combination with solid electrolytes (SEs) remain poorly understood. Accordingly, we engineer 50 nm thick zinc (Zn) and copper oxide (Cu2O) interlayers sputtered directly onto the LLZO SE, covered by a 600 nm thick Cu CC. The interlayer composition and Li deposition behavior were investigated by using a range of techniques. The results demonstrate that Zn interlayers facilitate Li deposition via in situ formation of Li–Zn alloys. Differently, the Cu2O interlayers drive Li2O formation, which contributes to more homogeneous Li deposition. The stability of alloying and conversion processes are studied to assess the impact on cycling performance. Overall, this work provides insights into the implementation of alloying and conversion-based interlayers in solid-state anode-less systems and highlights key performance-limiting factors, offering interfacial design strategies for further improvement.","PeriodicalId":142,"journal":{"name":"ChemElectroChem","volume":"12 24","pages":""},"PeriodicalIF":3.5,"publicationDate":"2025-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://chemistry-europe.onlinelibrary.wiley.com/doi/epdf/10.1002/celc.202500346","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145699043","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

Parametric Investigation of Electrochemical Synthesis of Ammonium Persulfate in Flow Reactor 流动反应器中电化学合成过硫酸铵的参数研究

IF 3.5 4区化学

ChemElectroChem Pub Date : 2025-11-11 DOI: 10.1002/celc.202500307

Mehala Thirumurugan, Suvetha Mariappan, Malini Rajendran, Vasudevan Subramanyan

{"title":"Parametric Investigation of Electrochemical Synthesis of Ammonium Persulfate in Flow Reactor","authors":"Mehala Thirumurugan, Suvetha Mariappan, Malini Rajendran, Vasudevan Subramanyan","doi":"10.1002/celc.202500307","DOIUrl":"https://doi.org/10.1002/celc.202500307","url":null,"abstract":"The current work focuses on the process parameters to enhance the current efficiency for the electrosynthesis of ammonium persulfate (APS) in a flow reactor under acidic environments using platinized titanium (Pt–Ti) as an anode. The effect of flow rate, current density, material of cathode, and separators on current efficiency for the preparation of persulfate is studied. Ammonium persulfate is produced by the reactor with a yield of 98.3% and a concentration of 100.32 g L–1, indicating the effective performance of the proposed system. A maximum current efficiency of 74.9% is achieved, corresponding to the energy consumption of 2.9 kWh kg–1 of ammonium persulfate using SS 304 and Daramic HD as cathode and separator, respectively. The impact of electrolyte composition on oxygen evolution reaction and hydrogen evolution reaction is investigated using linear sweep voltammetry. This selective cathode material and separator used in this flow system not only improve the yield and energy efficiency of ammonium persulfate production but also establish a scalable and sustainable method suitable for industrial applications.","PeriodicalId":142,"journal":{"name":"ChemElectroChem","volume":"12 24","pages":""},"PeriodicalIF":3.5,"publicationDate":"2025-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://chemistry-europe.onlinelibrary.wiley.com/doi/epdf/10.1002/celc.202500307","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145698905","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

Bayesian Optimization of Electrode Conditioning of Ni(-Fe) Electrodes for the Alkaline Oxygen Evolution Reaction 碱性析氧反应中Ni（-Fe）电极调理的贝叶斯优化

IF 3.5 4区化学

ChemElectroChem Pub Date : 2025-11-10 DOI: 10.1002/celc.202500284

J. Raphael Seidenberg, Clara Gohlke, Raphael Diebold, Vera Seidl, Anna K. Mechler, Alexander Mitsos, Dominik Bongartz

{"title":"Bayesian Optimization of Electrode Conditioning of Ni(-Fe) Electrodes for the Alkaline Oxygen Evolution Reaction","authors":"J. Raphael Seidenberg, Clara Gohlke, Raphael Diebold, Vera Seidl, Anna K. Mechler, Alexander Mitsos, Dominik Bongartz","doi":"10.1002/celc.202500284","DOIUrl":"https://doi.org/10.1002/celc.202500284","url":null,"abstract":"Efficient alkaline water electrolysis requires highly active electrodes for the sluggish oxygen evolution reaction (OER). NiFeOxHy materials are among the most active OER electrocatalysts, and their activity can be tailored, among other methods, by electrochemical conditioning. However, there is a lack of systematic approaches to optimize the conditioning process to achieve the best electrode activation. A promising way to develop such approaches is to use mathematical models. While mechanistic models are not readily available and hard to develop, data-driven models might offer a straightforward alternative. The use of Bayesian optimization (BO) with Gaussian processes to improve the electrode conditioning process of a Ni-Fe bulk electrode is proposed. With this approach, an electrode conditioning process yielding a stronger activity enhancement compared to previous manual optimization is identified; at the same time, fewer experiments are also required. It is further shown that this also allows to transfer knowledge to new materials: transfer learning starting from the experimental data for the Ni-Fe electrode allows optimization of the conditioning of a Ni electrode with fewer experiments than applying BO to the Ni electrode from scratch. Overall, the potential of using data-driven numerical optimization in a hardware-in-the-loop approach for electrode conditioning is highlighted.","PeriodicalId":142,"journal":{"name":"ChemElectroChem","volume":"12 24","pages":""},"PeriodicalIF":3.5,"publicationDate":"2025-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://chemistry-europe.onlinelibrary.wiley.com/doi/epdf/10.1002/celc.202500284","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145698851","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