Current Opinion in Electrochemistry最新文献

英文中文

Recent progress in low-cost methods for electrochemical sensor fabrication 低成本电化学传感器制造方法的最新进展

IF 6.9 2区化学 Q1 CHEMISTRY, PHYSICAL

Current Opinion in Electrochemistry

Pub Date : 2025-10-17 DOI: 10.1016/j.coelec.2025.101771

Nadia Moukri, Bernardo Patella, Rosalinda Inguanta

Electrochemical sensors have become essential tools in modern technology. They are recognized for their high sensitivity, selectivity, and real-time detection ability. As technology progresses, electrochemical sensors have evolved, providing improved performance, and opening new opportunities for on-the-spot detection and analysis. Their applications extend across various fields, such as medical diagnostics, environmental monitoring, and food safety. The largest application area of sensors is undoubtedly biomedical sciences, where their integration has significantly advanced diagnostics, monitoring, and treatment. This review summarizes recent progress in low-cost electrochemical sensor fabrication methods, including 3D printing, laser-induced graphene, CD/DVD recycling, and conductive inks. We highlight their performances, cost-effectiveness, and scalability, emphasizing biomedical diagnostics while also considering environmental, forensic, and industrial applications. The discussion outlines both achievements and remaining challenges, offering perspectives for future development.

电化学传感器已成为现代技术中必不可少的工具。它们因其高灵敏度、选择性和实时检测能力而得到认可。随着技术的进步，电化学传感器不断发展，提供了更好的性能，并为现场检测和分析开辟了新的机会。它们的应用扩展到各个领域，如医疗诊断、环境监测和食品安全。传感器最大的应用领域无疑是生物医学科学，它们的集成极大地促进了诊断、监测和治疗。本文综述了低成本电化学传感器制造方法的最新进展，包括3D打印、激光诱导石墨烯、CD/DVD回收和导电油墨。我们强调它们的性能、成本效益和可扩展性，强调生物医学诊断，同时也考虑环境、法医和工业应用。讨论概述了取得的成就和仍然存在的挑战，为未来的发展提供了前景。

引用次数: 0

Electrochemical biosensors for smart agri-food monitoring and decision support 用于智能农业食品监测和决策支持的电化学生物传感器

IF 6.9 2区化学 Q1 CHEMISTRY, PHYSICAL

Current Opinion in Electrochemistry

Pub Date : 2025-10-14 DOI: 10.1016/j.coelec.2025.101770

Maryam Awan, Aqsa Khan, Jehad Abdelnabi, Silvana Andreescu

The growing demand for food quality, safety and sustainability is driving the adoption of cost-effective real-time monitoring systems across the agricultural and food chain. This review critically examines the status of electrochemical biosensors for monitoring key agri-food targets including bacteria and foodborne contaminants, nutritional components, pesticide residues, soil nutrients, fertilizers and environmental pollutants, and their potential to address global food challenges. Following an overview of sensor types, target analytes, detection mechanisms and performance metrics, we discuss key barriers to field deployment such as stability, matrix interference, calibration, standardization and user acceptance. Proposed solutions such as integration with mobile platforms, data analytics and intuitive interfaces are outlined as potential pathways to accelerate adoption. With further development, electrochemical biosensors have the potential to become powerful tools in data-driven decision support systems, enabling precision agriculture, risk assessment and improved food quality.

对食品质量、安全和可持续性的需求不断增长，推动了整个农业和食品链采用具有成本效益的实时监测系统。本文综述了电化学生物传感器用于监测关键农业食品目标的现状，包括细菌和食源性污染物、营养成分、农药残留、土壤养分、肥料和环境污染物，以及它们应对全球粮食挑战的潜力。在概述了传感器类型、目标分析物、检测机制和性能指标之后，我们讨论了现场部署的关键障碍，如稳定性、矩阵干扰、校准、标准化和用户接受度。建议的解决方案，如与移动平台的集成、数据分析和直观的界面被概述为加速采用的潜在途径。随着进一步发展，电化学生物传感器有可能成为数据驱动的决策支持系统中的强大工具，从而实现精准农业、风险评估和提高食品质量。

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引用次数: 0

From lab to industry: Challenges in scaling Cu-based electrodes for CO2 electroreduction to multi-carbon products 从实验室到工业：将铜基电极用于二氧化碳电还原到多碳产品的挑战

IF 6.9 2区化学 Q1 CHEMISTRY, PHYSICAL

Current Opinion in Electrochemistry

Pub Date : 2025-10-13 DOI: 10.1016/j.coelec.2025.101769

Thao-Nguyen Ho , Trong Huy Pham , Yueying Li , Hossein Esmaeili , Cao-Thang Dinh

The electrochemical reduction of carbon dioxide (CO₂RR) to valuable multi-carbon (C₂₊) products presents a promising strategy for sustainable fuel and chemical production. Copper (Cu)-based catalysts are particularly suited for C–C bond formation thanks to their unique interaction with key CO₂RR intermediates. Recent advancements in catalyst design, including surface engineering, molecular coating, doping and alloying, and tandem catalysis, have significantly improved C₂₊ product selectivity at the laboratory scale. However, translating these improvements to large-area electrodes remains a critical challenge due to difficulties in catalyst synthesis, structural stability, and fabrication techniques. This review explores the latest progress in Cu-based CO₂RR catalysts, highlights the barriers to scaling up synthesis and electrode fabrication, and proposes potential solutions inspired by established industrial technologies. Addressing these challenges could bring CO₂RR closer to commercial viability, enabling the large-scale production of sustainable carbon-based fuels and chemicals.

电化学还原二氧化碳（CO2RR）为有价值的多碳（C2+）产品提供了一种有前途的可持续燃料和化工生产策略。由于铜基催化剂与关键的CO2RR中间体具有独特的相互作用，因此特别适合于C-C键的形成。催化剂设计的最新进展，包括表面工程、分子涂层、掺杂和合金化以及串联催化，在实验室规模上显著提高了C2+产物的选择性。然而，由于催化剂合成、结构稳定性和制造技术的困难，将这些改进转化为大面积电极仍然是一个关键的挑战。本文综述了cu基CO2RR催化剂的最新进展，强调了扩大合成和电极制造的障碍，并提出了受现有工业技术启发的潜在解决方案。解决这些挑战可以使CO2RR更接近商业可行性，从而实现可持续碳基燃料和化学品的大规模生产。

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引用次数: 0

Impedance spectroscopy of neurons, inductors and synapses: A path to understanding brain-like computation 神经元、感应器和突触的阻抗谱：理解类脑计算的途径

IF 6.9 2区化学 Q1 CHEMISTRY, PHYSICAL

Current Opinion in Electrochemistry

Pub Date : 2025-10-10 DOI: 10.1016/j.coelec.2025.101767

Jenifer Rubio-Magnieto, Juan Bisquert

This review underscores the growing relevance of impedance spectroscopy (IS) in neuromorphic research and its capacity to advance brain-inspired computation. Neuromorphic systems, which emulate biological neural networks, provide compact, adaptive, and energy-efficient solutions for edge applications such as robotics, wearable health monitoring, and environmental sensing. Since early studies on electrochemical oscillators, IS has been pivotal in probing neuron-like dynamics. Frequency-domain analysis of artificial synapses yields essential insights into synaptic plasticity—the core mechanism of learning and memory—shaped by functions like retention and filtering. Memristor-based synapses display chemical inductor behavior, evident as a negative arc in impedance spectra, highlighting their complex dynamics. More broadly, IS is increasingly positioned not only as a diagnostic tool for material performance but also as a framework for designing systems governed by ion migration, accumulation, and relaxation. By capturing these processes, IS provides a powerful perspective for analyzing and engineering physical computation components.

这篇综述强调了阻抗谱（IS）在神经形态研究中的日益重要的意义，以及它在促进大脑启发计算方面的能力。神经形态系统模拟生物神经网络，为机器人、可穿戴健康监测和环境传感等边缘应用提供紧凑、自适应和节能的解决方案。自从电化学振荡器的早期研究以来，IS一直是探测神经元样动力学的关键。对人工突触的频域分析可以让我们深入了解突触的可塑性——学习和记忆的核心机制——由保留和过滤等功能形成。基于忆阻器的突触表现出化学电感的行为，在阻抗谱中表现为负弧，突出了它们复杂的动力学特性。更广泛地说，IS不仅被定位为材料性能的诊断工具，而且还被定位为设计由离子迁移、积累和松弛控制的系统的框架。通过捕获这些过程，IS为分析和设计物理计算组件提供了一个强大的视角。

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引用次数: 0

Impedance of porous electrodes 多孔电极阻抗

IF 6.9 2区化学 Q1 CHEMISTRY, PHYSICAL

Current Opinion in Electrochemistry

Pub Date : 2025-10-10 DOI: 10.1016/j.coelec.2025.101764

Andrzej Lasia

Porous electrodes are important in practical applications of electrochemistry. Single cylindrical pore models are first presented. In the presence of direct current (DC) DC potential and DC concentration gradients appear. These gradients are related to each other. Analytical solutions exist only in the absence of the DC potential gradient. When a concentration gradient is present, two semicircles appear on the complex plane plots. Solution resistivity in pores causes formation of the high frequency line at 45° on the complex plane plots.

However, the real pores are multidimensional containing macro, meso, and micro pores. Many models of inhomogeneous porosity were developed. Further models used Poisson–Nernst–Planck theory to include charge interactions. In very narrow pores, double layers of the pore walls overlap. Future challenge is to obtain pore parameters from the impedance measurements of complex systems.

多孔电极在电化学的实际应用中具有重要意义。首次提出了单圆柱孔隙模型。在直流（DC）存在的情况下，会出现直流电位和直流浓度梯度。这些梯度是相互关联的。解析解只存在于没有直流电位梯度的情况下。当存在浓度梯度时，在复平面图上出现两个半圆。孔隙中的溶蚀电阻率导致复平面图上45°处形成高频线。而真实孔隙是多维的，包含宏观、中观和微观孔隙。建立了许多非均匀孔隙度模型。进一步的模型使用泊松-能-普朗克理论来包括电荷相互作用。在非常窄的孔隙中，两层孔壁重叠。未来的挑战是如何从复杂系统的阻抗测量中获得孔隙参数。

引用次数: 0

Continuous monitoring of biomolecular targets in vivo using DNA-based electrochemical sensors 利用基于dna的电化学传感器对体内生物分子靶标进行连续监测

IF 6.9 2区化学 Q1 CHEMISTRY, PHYSICAL

Current Opinion in Electrochemistry

Pub Date : 2025-10-10 DOI: 10.1016/j.coelec.2025.101765

Alejandro Chamorro-Garcia , Myriam Alfonsini , Daniele Caprioli , Claudio Parolo , Andrea Idili

Real-time, continuous in vivo molecular monitoring is crucial for advancing biomedical research and clinical healthcare, yet traditional methods face significant limitations. Electrochemical DNA-based (eDNA) biosensors are emerging as a powerful and highly versatile platform to address these needs. This review highlights key advancements within the last three years in eDNA biosensors tailored for in vivo continuous monitoring, emphasizing strategies to overcome challenges in stability, selectivity, and reversibility. Specifically, we delve into core eDNA biosensor designs and their in vivo applications, such as therapeutic drug monitoring, pharmacokinetic studies, real-time tracking of disease and neurochemical biomarkers, and feedback-controlled drug delivery. Furthermore, we critically examine significant progress in developing calibration-free operational strategies and ongoing efforts to tackle challenges related to long-term stability, receptor responsiveness, and target selectivity. The continued evolution of these platforms and their integration with artificial intelligence, positions eDNA biosensors as transformative tools for future biomedical breakthroughs and precision healthcare.

实时、连续的体内分子监测对于推进生物医学研究和临床医疗保健至关重要，但传统方法面临着显著的局限性。基于电化学dna （eDNA）的生物传感器正在成为解决这些需求的强大且高度通用的平台。这篇综述强调了过去三年来eDNA生物传感器在体内连续监测方面的关键进展，强调了克服稳定性、选择性和可逆性挑战的策略。具体而言，我们深入研究核心eDNA生物传感器设计及其在体内的应用，如治疗药物监测，药代动力学研究，疾病和神经化学生物标志物的实时跟踪，以及反馈控制的药物递送。此外，我们严格审查了在开发无校准操作策略和持续努力方面取得的重大进展，以解决与长期稳定性、受体反应性和目标选择性相关的挑战。这些平台的不断发展及其与人工智能的集成，使eDNA生物传感器成为未来生物医学突破和精准医疗的变革性工具。

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引用次数: 0

Review—Electrochemical impedance spectroscopy for lithium-ion batteries: Measurement and analysis (for automotive applications) 锂离子电池的电化学阻抗谱：测量和分析（汽车应用）

IF 6.9 2区化学 Q1 CHEMISTRY, PHYSICAL

Current Opinion in Electrochemistry

Pub Date : 2025-10-10 DOI: 10.1016/j.coelec.2025.101768

Rico Klink , René H.E. van Doorn , André Weber

Electrochemical impedance spectroscopy is a reliable tool for the electrochemical analysis of various types of electrochemical cells. It is commonly applied in research and development to deconvolute and quantify different electrochemical processes limiting the cell performance and to understand ageing phenomena in the cell. Due to its performance, electrochemical impedance spectroscopy is increasingly considered to be used on the system level in commercial applications of electrochemical cells.

In this contribution, recent approaches to apply electrochemical impedance spectroscopy in automotive lithium-ion battery systems are reviewed. We will discuss advanced measurement, data analysis and modelling approaches that provide access to essential information of the battery’s state and show a potential to meet the requirements of automotive battery systems.

电化学阻抗谱是分析各类电化学电池的可靠工具。它通常应用于研究和开发中，以反卷积和量化限制电池性能的不同电化学过程，并了解电池中的老化现象。由于其优异的性能，电化学阻抗谱在电化学电池的商业应用中越来越被认为是在系统层面上的应用。本文综述了电化学阻抗谱在汽车锂离子电池系统中的应用。我们将讨论先进的测量、数据分析和建模方法，这些方法提供了获取电池状态基本信息的途径，并展示了满足汽车电池系统要求的潜力。

引用次数: 0

Positively charged second coordination sphere in molecular CO2 electroreduction 分子CO2电还原中带正电的第二配位球

IF 6.9 2区化学 Q1 CHEMISTRY, PHYSICAL

Current Opinion in Electrochemistry

Pub Date : 2025-10-10 DOI: 10.1016/j.coelec.2025.101766

Sergio Gonell

Molecular electrocatalysts for CO₂ reduction typically suffer from scaling relationships, in which a fast catalyst needs large overpotentials, limiting the development of efficient catalytic systems, which work at high rates and low energy inputs. Introduction of pendent positively charged groups in the ligand framework has proven to be an efficient strategy to break such relationships. This revision presents the different molecular electrocatalysts for CO₂ reduction, whose second coordination sphere has been decorated with positively charged groups, enabling improved catalytic performances.

用于二氧化碳还原的分子电催化剂通常受到结垢关系的影响，在这种关系中，快速催化剂需要大的过电位，这限制了高效催化系统的发展，这些系统可以在高速率和低能量输入下工作。在配体框架中引入悬垂的正电荷基团已被证明是打破这种关系的有效策略。本文提出了不同的CO2还原分子电催化剂，其第二配位球被修饰为带正电荷的基团，从而提高了催化性能。

引用次数: 0

Nanoscale corrosion analysis via in-situ surface potential mapping: Enhancing electrochemical insight with OL-EPM and AC-KPFM 基于原位表面电位映射的纳米级腐蚀分析：利用OL-EPM和AC-KPFM增强电化学洞察力

IF 6.9 2区化学 Q1 CHEMISTRY, PHYSICAL

Current Opinion in Electrochemistry

Pub Date : 2025-10-01 DOI: 10.1016/j.coelec.2025.101763

Ehsan Rahimi

Local nanoscale mapping of electrostatic surface potential (ESP) is advancing rapidly to meet the needs of electrochemistry and corrosion science. Conventional Kelvin probe force microscopy (KPFM), while valuable, is limited in liquid and dynamic redox environments due to restricted electrochemical control and spatial resolution. Recent advances in alternating current KPFM (AC-KPFM) and open-loop electric potential microscopy (OL-EPM) provide high-resolution, in-situ ESP imaging while suppressing parasitic Faradaic reactions. AC-KPFM is powerful for probing ionization and counterion interactions at solid–liquid interfaces, whereas OL-EPM enables visualization of corrosion initiation, nanoscale defects in coatings, and gradients across grain boundaries. Together, these methods bridge the gap between surface electrostatics and electrochemistry. Key challenges remain in temporal resolution, minimizing probe perturbations, and linking nanoscale data to macroscopic corrosion behavior. Nonetheless, these techniques reveal hidden electrochemical heterogeneities, clarify pathways of localized corrosion, and offer insights for designing durable, corrosion-resistant materials.

为了满足电化学和腐蚀科学的需要，局部纳米尺度静电表面电位（ESP）测绘正在迅速发展。传统的开尔文探针力显微镜（KPFM）虽然有价值，但由于电化学控制和空间分辨率的限制，在液体和动态氧化还原环境中受到限制。交流KPFM （AC-KPFM）和开环电位显微镜（OL-EPM）的最新进展提供了高分辨率的原位ESP成像，同时抑制了寄生法拉第反应。AC-KPFM在探测固液界面的电离和反离子相互作用方面功能强大，而OL-EPM则可以可视化腐蚀起始、涂层中的纳米级缺陷和跨晶界的梯度。总之，这些方法弥合了表面静电学和电化学之间的差距。关键的挑战仍然是时间分辨率，最小化探针扰动，以及将纳米尺度数据与宏观腐蚀行为联系起来。尽管如此，这些技术揭示了隐藏的电化学非均质性，阐明了局部腐蚀的途径，并为设计耐用、耐腐蚀的材料提供了见解。

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Recent advances in probing the cation effects on electrocatalysis of HER and CO(2)RR by surface-sensitive spectroscopic and microscopic studies 表面敏感光谱和显微研究阳离子对HER和CO(2)RR电催化作用的研究进展

IF 6.9 2区化学 Q1 CHEMISTRY, PHYSICAL

Current Opinion in Electrochemistry

Pub Date : 2025-09-30 DOI: 10.1016/j.coelec.2025.101762

Xianxian Qin, Tian-Wen Jiang, Kun Jiang, Wen-Bin Cai

The cation effect plays a critical role in electrocatalytic reductions as cations tend to enrich in the electric double layer (EDL) at cathodic potentials. In this mini-review, we briefly overview the most recent advances since 2022 on applying surface spectroscopic and microscopic methods to investigate the cation effects on hydrogen evolution reaction (HER) and CO₍₂₎ reduction reaction (CO₍₂₎RR) from a technique-driven perspective, and present our viewpoints for future researches of relevance, in an effort to bridge in situ interface characterizations and physical insights of the cation effects.

阳离子效应在电催化还原中起着至关重要的作用，因为阳离子在阴极电位下倾向于在双电层（EDL）中富集。在这篇综述中，我们简要概述了自2022年以来应用表面光谱和微观方法从技术驱动的角度研究阳离子对析氢反应（HER）和CO(2)还原反应（CO(2)RR）的影响的最新进展，并提出了我们对未来相关研究的观点，以努力在原位界面表征和阳离子效应的物理见解之间建立桥梁。

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