Current Opinion in Electrochemistry最新文献

英文中文

Shaping the next-generation of fused deposition modeling three-dimensional-printing-based electrochemical (bio)sensing: Drawing a realistic horizon 塑造下一代熔融沉积建模三维打印电化学（生物）传感：绘制现实的地平线

IF 6.9 2区化学 Q1 CHEMISTRY, PHYSICAL

Current Opinion in Electrochemistry

Pub Date : 2025-07-15 DOI: 10.1016/j.coelec.2025.101730

Miriam Chávez , Fabiana Arduini , Alberto Escarpa

The emergence of three-dimensional (3D)-printing as a fabrication tool has revolutionized the development of customized electrochemical (bio)sensors, offering exceptional design flexibility, cost-effective and rapid prototyping. Among the additive manufacturing technologies, fused deposition modeling (FDM) stands out for its affordability, ease of use, and the growing availability of conductive filaments, providing a new approach to produce tailored electrodes with enormous analytical potential and capabilities. This perspective presents a critical overview of the current opportunities and limitations of FDM-3D-printing as a technology for the design and development of electrochemical (bio)sensors, addressing material formulation, electrode architecture, surface modification strategies, analytical performance, and emerging applications. Current challenges and directions to overcome them are identified and discussed, drawing a realistic horizon for the next generation of FDM-3D-printed electrochemical (bio)sensors.

三维（3D）打印作为一种制造工具的出现，彻底改变了定制电化学（生物）传感器的发展，提供了卓越的设计灵活性，成本效益和快速原型。在增材制造技术中，熔融沉积建模（FDM）以其经济实惠、易于使用和导电丝的可用性而脱颖而出，为生产具有巨大分析潜力和能力的定制电极提供了一种新方法。这一观点对fdm - 3d打印作为设计和开发电化学（生物）传感器、解决材料配方、电极结构、表面改性策略、分析性能和新兴应用的技术的当前机遇和局限性进行了批判性概述。确定并讨论了当前的挑战和克服这些挑战的方向，为下一代fdm - 3d打印电化学（生物）传感器绘制了现实的地平线。

引用次数: 0

Local pH engineering to impact electrocatalysis 局部pH工程影响电催化

IF 6.9 2区化学 Q1 CHEMISTRY, PHYSICAL

Current Opinion in Electrochemistry

Pub Date : 2025-07-09 DOI: 10.1016/j.coelec.2025.101728

Maxime Decker , Quentin Lenne , Jalal Ghilane , Carlos M. Sánchez-Sánchez

Local pH refers to the pH gradient developed within the diffusion layer of the electrode, which can deviate significantly from the bulk value due to proton consumption or generation during electrocatalytic reactions. The proton availability is often a thermodynamic or kinetic limiting factor during electrocatalytic reactions involving proton–electron transfer as the determining step. Thus, controlling local pH can effectively impact both reaction selectivity and activity. In this short review, we present recent advances and strategies that emerged to effectively tune the local pH and impact on different electrocatalytic reactions, such as CO₂ reduction reaction (CO₂RR), electrochemical nitrate reduction (ENR), O₂ reduction reaction, (ORR) and ethanol oxidation reaction (EOR). The catalyst engineering approach through microenvironment modification, tuning mass transport conditions by catalyst size and porosity, as well as by pulsed potential electrolysis are the strategies described here.

局部pH是指电极扩散层内形成的pH梯度，在电催化反应过程中，由于质子的消耗或产生，pH梯度可能与本体值有明显偏差。在以质子-电子转移为决定步骤的电催化反应中，质子可用性通常是热力学或动力学的限制因素。因此，控制局部pH值可以有效地影响反应的选择性和活性。在这篇简短的综述中，我们介绍了最近的进展和策略，以有效地调整局部pH值和影响不同的电催化反应，如CO2还原反应（CO2RR），电化学硝酸盐还原（ENR）， O2还原反应（ORR）和乙醇氧化反应（EOR）。本文介绍了通过微环境修饰、通过催化剂尺寸和孔隙度调节质量传输条件以及脉冲电位电解的催化剂工程方法。

引用次数: 0

Magnetic support-driven electrochemical affinity biosensing: Advancing sensitive, rapid, and simplified determination of clinically relevant analytes 磁支持驱动的电化学亲和生物传感：推进敏感，快速和简化的测定临床相关分析物

IF 7.9 2区化学 Q1 CHEMISTRY, PHYSICAL

Current Opinion in Electrochemistry

Pub Date : 2025-07-08 DOI: 10.1016/j.coelec.2025.101729

Susana Campuzano , Maria Gamella , José M. Pingarrón

The demand to determine analytes at increasingly lower concentrations in complex samples, while minimizing sample size, treatment and test duration, has driven innovation in electrochemical biotechnologies. Inspired by the principle that affinity reactions gain in efficiency and speed when the biosensing surface seeks the analyte, bioelectrochemical technologies leverage their unique strengths along with those provided by magnetic carriers to improve affinity testing, pushing the boundaries of accuracy and efficiency.

This minireview focuses primarily on magnetic beads, motors, and gold-coated magnetic nanoparticles dispersible electrodes, considering the remarkable improvements they provide in electrochemical affinity biotechnologies. A timely, comparative, and critical analysis of the opportunities offered by these three magnetic supports in electrochemical affinity biodetection is carried out by highlighting and discussing some of the most innovative research. This minireview also dares to forecast the future potential of these technologies for advancing modern analytical capabilities and accelerating their integration into next-generation point-of-care devices.

在复杂样品中以越来越低的浓度测定分析物，同时最大限度地减少样本量、处理和测试时间的需求，推动了电化学生物技术的创新。当生物感应表面寻找分析物时，亲和反应的效率和速度都会提高，受这一原理的启发，生物电化学技术利用其独特的优势以及磁性载体提供的优势来改进亲和测试，推动准确性和效率的界限。考虑到磁珠、马达和涂有金的磁性纳米颗粒分散电极在电化学亲和生物技术方面的显著改进，本综述主要关注磁珠、马达和磁纳米颗粒分散电极。通过强调和讨论一些最具创新性的研究，对这三种磁性载体在电化学亲和性生物检测中提供的机会进行了及时、比较和批判性的分析。这篇迷你综述还大胆预测了这些技术的未来潜力，以推进现代分析能力，并加速它们与下一代护理点设备的集成。

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引用次数: 0

Progress and pitfalls in measuring the double-layer capacitance of platinum electrodes 铂电极双层电容测量的进展与缺陷

IF 7.9 2区化学 Q1 CHEMISTRY, PHYSICAL

Current Opinion in Electrochemistry

Pub Date : 2025-07-05 DOI: 10.1016/j.coelec.2025.101727

Nicci L. Fröhlich, Marc T.M. Koper

Despite extensive research, the double-layer structure at Pt/aqueous electrolyte interfaces (quantified by the double-layer capacitance, C_dl) remains incompletely understood as even for the model Pt(111)/HClO₄ interface, anomalous C_dl trends have been reported. These trends were previously ascribed to differences in measurement techniques (i.e. dc methods such as cyclic voltammetry versus ac methods such as electrochemical impedance spectroscopy [EIS]). However, by repeating these measurements using EIS, we clarify that these anomalous C_dl trends are not measurement artefacts but instead reflect intrinsic properties of the Pt(111)/HClO₄ interface, necessitating continued investigation. We further highlight the complexity introduced by electrosorbed H_ads and/or OH_ads species resulting from catalytic H₂O dissociation, which contribute an adsorption (pseudo)capacitance, C_ads. This complicates the deconvolution of C_dl from total capacitance, a challenge further exacerbated by structure-dependent adsorption between different Pt facets. Our goal is to clarify how these factors affect capacitance interpretation at Pt/aqueous electrolyte interfaces, particularly highlighting the progress and challenges in accurately extracting C_dl values from prior studies.

尽管进行了广泛的研究，但Pt/水电解质界面的双层结构（由双层电容Cdl量化）仍然不完全清楚，即使对于模型Pt(111)/HClO4界面，也报道了异常的Cdl趋势。这些趋势以前被归因于测量技术的差异（即直流方法，如循环伏安法与交流方法，如电化学阻抗谱[EIS]）。然而，通过使用EIS重复这些测量，我们澄清了这些异常的Cdl趋势不是测量的人工产物，而是反映了Pt(111)/HClO4界面的固有性质，需要继续研究。我们进一步强调了由催化H2O解离产生的电吸附Hads和/或OHads物种引入的复杂性，它们有助于吸附（伪）电容，Cads。这使得Cdl从总电容中反褶积变得复杂，不同Pt面之间的结构依赖吸附进一步加剧了这一挑战。我们的目标是澄清这些因素如何影响Pt/水电解质界面的电容解释，特别是强调从先前的研究中准确提取Cdl值的进展和挑战。

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引用次数: 0

Time: The potentially powerful, often-overlooked variable in electrochemical sensing of per- and polyfluoroalkyl substances 时间：全氟烷基和多氟烷基物质电化学传感中潜在的强大的、经常被忽视的变量

IF 6.9 2区化学 Q1 CHEMISTRY, PHYSICAL

Current Opinion in Electrochemistry

Pub Date : 2025-07-02 DOI: 10.1016/j.coelec.2025.101726

Samantha C. Cullom , Jeffrey E. Dick

Modern electrochemistry places a heavy emphasis on the importance of thermodynamic measurements for environmental sensing. While most electrochemical sensors require some type of binding mechanism, analytes do not bind to sensors instantaneously; the binding process takes time, suggesting that we must examine reaction kinetics as well. With emerging environmental pollutants of concern, such as per- and polyfluoroalkyl substances (PFAS), electrochemists must consider the kinetic relationship between the electrochemical sensor and the analyte. Various types of environmental electrochemical sensors, such as enzymes, antibodies, aptamers, and molecularly imprinted polymers (MIPs), exist. Each type of sensor can be used in the environment, but MIPs have recently demonstrated strong potential to qualitatively and quantitatively detect and identify PFAS species at the earliest onset of environmental contamination. Additionally, the mathematical and experimental approaches to MIP binding have room to expand beyond the thermodynamic isotherm models and into a time-dependent kinetic model.

现代电化学非常重视热力学测量对环境传感的重要性。虽然大多数电化学传感器需要某种类型的结合机制，但分析物不会立即与传感器结合；结合过程需要时间，这表明我们也必须研究反应动力学。随着新出现的环境污染物，如全氟烷基和多氟烷基物质（PFAS）的关注，电化学化学家必须考虑电化学传感器和分析物之间的动力学关系。存在各种类型的环境电化学传感器，如酶、抗体、适体和分子印迹聚合物（MIPs）。每种类型的传感器都可以在环境中使用，但MIPs最近显示出在环境污染最早开始时定性和定量检测和识别PFAS物种的强大潜力。此外，MIP结合的数学和实验方法有空间扩展到热力学等温线模型和时间相关的动力学模型。

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引用次数: 0

Portable electrochemical sensors for per- and polyfluoroalkyl substances: Design, challenges, and opportunities for field deployment 用于全氟烷基和多氟烷基物质的便携式电化学传感器：现场部署的设计、挑战和机遇

IF 7.9 2区化学 Q1 CHEMISTRY, PHYSICAL

Current Opinion in Electrochemistry

Pub Date : 2025-07-01 DOI: 10.1016/j.coelec.2025.101725

Nishi Gondhiya, Abd Ur Rehman, Daniel Andreescu, Silvana Andreescu

The widespread presence of per- and polyfluoroalkyl substances (PFAS) in the environment presents a complex global challenge due to their persistence, resistance to degradation, and harmful effects. Electrochemical sensors offer the sensitivity needed to detect PFAS at regulatory limits and show promise for large-scale environmental monitoring without the need for costly laboratory equipment. This review highlights recent advances in electrochemical sensing technologies and their potential as field-deployable devices for rapid screening and on site PFAS detection. Examples include sensor platforms based on redox-active reporters, molecularly imprinted polymers (MIPs), redox dyes, metal organic frameworks (MOFs), covalent organic frameworks (COFs), nanoparticle impacts, and nanobubble and nanopore technologies, coupled with direct or indirect signal transduction strategies. We discuss promising sensor designs and detection mechanisms and outline the key challenges and future directions needed to advance their practical deployment in environmental monitoring applications.

全氟烷基和多氟烷基物质（PFAS）在环境中的广泛存在，由于其持久性、抗降解性和有害影响，构成了一个复杂的全球性挑战。电化学传感器提供了在法规限制下检测PFAS所需的灵敏度，并且在不需要昂贵的实验室设备的情况下显示出大规模环境监测的前景。本文综述了电化学传感技术的最新进展及其作为快速筛选和现场PFAS检测的现场可部署设备的潜力。例子包括基于氧化还原活性报告的传感器平台、分子印迹聚合物（MIPs）、氧化还原染料、金属有机框架（mfs）、共价有机框架（COFs）、纳米颗粒冲击、纳米泡和纳米孔技术，以及直接或间接的信号转导策略。我们讨论了有前途的传感器设计和检测机制，并概述了推进其在环境监测应用中的实际部署所需的关键挑战和未来方向。

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引用次数: 0

The role of interfacial water in promoting C–C coupling during CO2 electroreduction CO2电还原过程中界面水促进C-C耦合的作用

IF 7.9 2区化学 Q1 CHEMISTRY, PHYSICAL

Current Opinion in Electrochemistry

Pub Date : 2025-06-19 DOI: 10.1016/j.coelec.2025.101722

Anthony Shoji Hall , David Raciti

The electrochemical reduction of CO₂ (CO₂RR) into hydrocarbons and oxygenates presents a promising pathway toward a carbon-neutral energy cycle, but achieving selective product formation remains a challenge. While extensive efforts have focused on catalyst design and electrolyte composition, the role of the interfacial water properties, an often-overlooked parameter, has only recently come under investigation. Water serves as the primary proton donor (in aqueous electrolytes) in the absence of hydronium, which can influence the competition between CO₂RR and the hydrogen evolution reaction (HER). Despite studies dating back to the 1980s demonstrating that electrolyte composition significantly impacts CO₂RR performance, the effects of the electrolyte composition on the interfacial water properties have remained largely unexplored. Recent findings suggest that tuning the interfacial water properties can influence C–C coupling by altering solvation environments and stabilize reaction intermediates. This perspective explores how tuning the interfacial water properties improves C–C coupling, providing a new strategy for improving catalysis.

电化学还原CO2 （CO2RR）为碳氢化合物和含氧化合物提供了一条通往碳中性能量循环的有希望的途径，但实现选择性产物形成仍然是一个挑战。虽然人们在催化剂设计和电解质组成方面投入了大量的精力，但界面水性质（一个经常被忽视的参数）的作用直到最近才得到研究。在不存在水合氢离子的情况下，水作为主要质子供体（在含水电解质中），会影响CO2RR之间的竞争和析氢反应（HER）。尽管早在20世纪80年代就有研究表明，电解质成分会显著影响CO2RR性能，但电解质成分对界面水性质的影响在很大程度上仍未被探索。最近的研究表明，调整界面水性质可以通过改变溶剂化环境和稳定反应中间体来影响C-C耦合。这一观点探讨了调整界面水性质如何改善C-C耦合，为改善催化提供了一种新的策略。

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引用次数: 0

Feasibility of the hydrogen production by assistance of ethanol: A critical perspective 乙醇辅助制氢的可行性：一个批判的观点

IF 7.9 2区化学 Q1 CHEMISTRY, PHYSICAL

Current Opinion in Electrochemistry

Pub Date : 2025-06-17 DOI: 10.1016/j.coelec.2025.101723

Seiti Inoue Venturini, Manuel J.S. Farias, Germano Tremiliosi-Filho

Traditional electrolytic water splitting is one of the usual ways to produce molecular hydrogen. However, the specific slow kinetics of the complementary anodic molecular oxygen generation harm the efficiency of hydrogen evolution. One of the ways to get around this problem is to replace the slow oxygen reaction by another anodic reaction, with higher faradaic efficiency, such as those involving biomass derivatives, especially the ethanol, setting up the electrochemical ethanol reformer. Thus, in this work is made a critical review of recent researchers regarding the development of catalytic materials for both, hydrogen reaction and ethanol oxidation.

传统的电解水裂解是生产氢分子的常用方法之一。然而，互补阳极分子产氧特有的慢动力学损害了析氢效率。解决这一问题的方法之一是用另一种法拉第效率更高的阳极反应代替缓慢的氧反应，例如涉及生物质衍生物的反应，特别是乙醇，建立电化学乙醇重整器。因此，在这项工作中，对最近研究人员关于氢反应和乙醇氧化催化材料的发展进行了批判性的回顾。

引用次数: 0

Harnessing instrumentation and artificial intelligence for new insights and applications in single-entity electrochemistry 利用仪器和人工智能在单一实体电化学中的新见解和应用

IF 7.9 2区化学 Q1 CHEMISTRY, PHYSICAL

Current Opinion in Electrochemistry

Pub Date : 2025-06-16 DOI: 10.1016/j.coelec.2025.101724

Gabriel Gemadzie , Peter McPike , Aliaksei Boika

The field of single-entity electrochemistry (SEE) has rapidly evolved, driven by innovative advancements in instrumentation, sophisticated data analysis powered by artificial intelligence (AI) and machine learning (ML), and an expanding range of applications across multiple disciplines. This review highlights significant recent progress in instrument developments that enhance the spatial and temporal resolution of SEE measurements, as well as data analysis employing AI methodologies to improve the processing, interpretation, and accuracy of complex electrochemical datasets. Additionally, we provide an overview of impactful recent applications of SEE in energy storage, catalysis, environmental monitoring, and biosensing, demonstrating the critical importance and transformative potential of single-entity measurements. By integrating advanced instrumentation with powerful data analytical frameworks, SEE continues to reveal unique insights at the nanoscale, bridging fundamental electrochemical research and practical applications.

由于仪器仪表的创新进步，人工智能（AI）和机器学习（ML）驱动的复杂数据分析以及跨多个学科的应用范围不断扩大，单实体电化学（SEE）领域正在迅速发展。这篇综述强调了仪器开发方面的重大进展，这些进展提高了SEE测量的空间和时间分辨率，以及采用人工智能方法进行数据分析，以改善复杂电化学数据集的处理、解释和准确性。此外，我们还概述了SEE在能源存储、催化、环境监测和生物传感方面的最新应用，展示了单一实体测量的关键重要性和变革潜力。通过将先进的仪器与强大的数据分析框架相结合，SEE继续在纳米尺度上揭示独特的见解，弥合基础电化学研究和实际应用。

引用次数: 0

Sensors and biosensors: From architecture to analytes 传感器和生物传感器：从建筑到分析物

IF 7.9 2区化学 Q1 CHEMISTRY, PHYSICAL

Current Opinion in Electrochemistry

Pub Date : 2025-06-09 DOI: 10.1016/j.coelec.2025.101721

Rasa Pauliukaite

引用次数: 0

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