Current Opinion in Electrochemistry最新文献

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Electrochemical valorization of cellulose, hemicellulose, and lignin derivates into functional products: A mini-review 纤维素、半纤维素和木质素衍生物转化为功能性产品的电化学增值：综述

IF 6.9 2区化学 Q1 CHEMISTRY, PHYSICAL

Current Opinion in Electrochemistry

Pub Date : 2025-12-13 DOI: 10.1016/j.coelec.2025.101806

Byan Baihaqi, Yusrin Ramli, Francesco Thadeo, Abuliti Abudula, Guoqing Guan

The growing global energy demand underscores the urgent need for sustainable alternatives to fossil fuels. Biomass, as an abundant and renewable resource, offers significant potential for producing value-added chemicals and energy carriers. Among various conversion routes, electrochemical process emerges as a promising green technology, operating under mild conditions, minimizing reagent consumption, and reducing wastes. This mini-review provides an overview of recent advances in the electrochemical valorization of cellulose, hemicellulose, and lignin derivatives (particularly, glucose, xylose, and phenolic compounds) into high-value functional products. Recent progress, innovative strategies, and existing challenges are discussed, along with perspectives for future research aiming to develop more efficient electrocatalysts and integrated reaction systems for sustainable biomass valorization.

日益增长的全球能源需求凸显了寻找化石燃料的可持续替代品的迫切需要。生物质作为一种丰富的可再生资源，在生产增值化学品和能源载体方面具有巨大潜力。在各种转化途径中，电化学过程以其在温和的条件下运行、减少试剂消耗、减少浪费等优点成为一种很有前途的绿色技术。这篇综述概述了纤维素、半纤维素和木质素衍生物（特别是葡萄糖、木糖和酚类化合物）电化学增值成高价值功能产品的最新进展。讨论了最近的进展、创新策略和存在的挑战，以及未来研究的前景，旨在开发更有效的电催化剂和可持续生物质增值的综合反应系统。

引用次数: 0

Electrochemical advances for cultural heritage science 文化遗产学的电化学进展

IF 6.9 2区化学 Q1 CHEMISTRY, PHYSICAL

Current Opinion in Electrochemistry

Pub Date : 2025-12-13 DOI: 10.1016/j.coelec.2025.101804

Francesca Di Turo

Electrochemistry has become an increasingly powerful tool in cultural heritage science, offering minimally invasive strategies for both conservation and archaeometric research. Recent advances in Electrochemical Impedance Spectroscopy (EIS) have focused on the development of gelled electrolytes, miniaturised probes, and portable configurations, enabling reliable analyses on fragile or irregular metallic artefacts while minimising risks to their surfaces. In parallel, Voltammetry of Immobilised Microparticles (VIMP) has expanded far beyond its original application to metals, demonstrating remarkable versatility across ceramics, paper, pigments, and complex polychrome artworks. These approaches not only allow for the characterisation and discrimination of materials but also provide insights into provenance, production technologies, and long-term stability. By bridging conservation practice with archaeometric questions, electrochemical methods are emerging as cornerstone techniques in heritage science, complementing conventional analytical approaches and opening new perspectives for the study and preservation of cultural materials.

电化学已成为文化遗产科学中日益强大的工具，为保护和考古研究提供了微创策略。电化学阻抗谱（EIS）的最新进展集中在凝胶电解质、小型化探针和便携式配置的开发上，能够对易碎或不规则的金属工件进行可靠的分析，同时最大限度地降低其表面的风险。与此同时，固定微粒伏安法（VIMP）已经远远超出了其最初在金属上的应用，在陶瓷、纸张、颜料和复杂的彩色艺术品上展示了非凡的多功能性。这些方法不仅可以对材料进行表征和区分，还可以对来源、生产技术和长期稳定性提供见解。通过将保护实践与考古问题联系起来，电化学方法正在成为遗产科学的基石技术，补充了传统的分析方法，并为文化材料的研究和保护开辟了新的视角。

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Cathode chemistry innovations in anode-free aqueous zinc metal batteries 无阳极水性锌金属电池的阴极化学创新

IF 6.9 2区化学 Q1 CHEMISTRY, PHYSICAL

Current Opinion in Electrochemistry

Pub Date : 2025-12-13 DOI: 10.1016/j.coelec.2025.101805

Huang Zhang , Yang Wang , Zhihao Zhao , Xu Liu , Stefano Passerini

The emergence of anode-free aqueous zinc metal batteries (AF-ZMBs) represents a transformative approach that combines intrinsic safety and low cost with maximized energy density. While significant research has focused on electrolyte optimization and interface engineering to enhance zinc reversibility, comprehensive analysis of cathode chemistry specifically tailored for anode-free configurations remains limited. This review systematically examines recent advancements in innovative cathode design strategies, spanning intercalation, hybrid-ion, dual-ion, and conversion mechanisms, and analyzes their respective capabilities in maintaining zinc inventory and structural stability. By critically assessing the current landscape and future potential of these cathode systems, this work aims to establish fundamental design principles for developing practical anode-free zinc battery technologies.

无阳极水锌金属电池（af - zmb）的出现代表了一种变革性的方法，它结合了固有的安全性、低成本和最大的能量密度。虽然大量的研究集中在电解质优化和界面工程上，以提高锌的可逆性，但专门针对无阳极结构的阴极化学综合分析仍然有限。本文系统地回顾了近年来在创新阴极设计策略方面的进展，包括插层、杂化离子、双离子和转化机制，并分析了各自在保持锌库存和结构稳定性方面的能力。通过批判性地评估这些阴极系统的现状和未来潜力，本工作旨在为开发实用的无阳极锌电池技术建立基本的设计原则。

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Advances in fuel cells EIS data analysis using the distribution function of relaxation times methods 利用松弛时间分布函数法分析燃料电池EIS数据的研究进展

IF 6.9 2区化学 Q1 CHEMISTRY, PHYSICAL

Current Opinion in Electrochemistry

Pub Date : 2025-12-11 DOI: 10.1016/j.coelec.2025.101803

Shweta Pal, Yoed Tsur

Analyzing Electrochemical Impedance Spectroscopy (EIS) data measured on fuel cells is increasingly done by finding the Distribution Function of Relaxation Times (DFRT, also known as DRT). This has clear advantages in cases where the important loss mechanisms occur in series and at separable time constants. Then each peak may be attributed to a process, and its integral yields the effective loss associated with it. Recent advances in this field are briefly reviewed.

分析燃料电池的电化学阻抗谱（EIS）数据越来越多地通过寻找松弛时间分布函数（DFRT，也称为DRT）来完成。这在重要的损耗机制串联发生且时间常数可分离的情况下具有明显的优势。然后，每个峰值可归因于一个过程，其积分产生与之相关的有效损失。本文简要回顾了这一领域的最新进展。

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Electrochemical impedance spectroscopy to characterise plain and fibre-reinforced cementitious mixes 电化学阻抗谱表征普通和纤维增强胶凝混合料

IF 6.9 2区化学 Q1 CHEMISTRY, PHYSICAL

Current Opinion in Electrochemistry

Pub Date : 2025-12-11 DOI: 10.1016/j.coelec.2025.101802

X.R. Nóvoa

EIS is an analytical technique in constant development because it can extract information from many physical, chemical, and electrochemical phenomena occurring in nature, capturing the specific relaxation time constants.

This review focuses on a particular system, a porous ceramic material with an alkaline electrolyte and embedded electronic conductors (fibres or rebars). EIS allows assessing ionic conductivity through porosity, which is relevant for the transport of chlorides in the case of rebar corrosion, the corrosion rate (via the polarisation resistance), and various self-sensing functionalities (via capacitance and ionic or electronic conductivities). Relevant examples of all those aspects are summarised in the present review.

EIS是一种不断发展的分析技术，因为它可以从自然界中发生的许多物理、化学和电化学现象中提取信息，捕获特定的弛豫时间常数。本文综述了一种特殊的系统，一种具有碱性电解质和嵌入电子导体（纤维或钢筋）的多孔陶瓷材料。EIS允许通过孔隙度评估离子电导率，这与钢筋腐蚀情况下氯化物的传输有关，腐蚀速率（通过极化电阻），以及各种自传感功能（通过电容和离子或电子电导率）。本审查总结了所有这些方面的有关例子。

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Recent advances in electrochemical capillary flow microfluidic devices 电化学毛细管流动微流控装置的研究进展

IF 6.9 2区化学 Q1 CHEMISTRY, PHYSICAL

Current Opinion in Electrochemistry

Pub Date : 2025-12-09 DOI: 10.1016/j.coelec.2025.101801

Maxwell D. Bridges , Charles S. Henry

Electroanalytical chemistry has found incredible importance in diagnostics, healthcare, environmental monitoring and many other applications. One challenge for electroanalytical chemistry, however, is the ability to handle complex samples and/or differentiate between analytes with similar redox potentials. Historically, electrochemistry has been coupled with separation methods like liquid chromatography and capillary electrophoresis to address this problem, but this resulted in complex equipment that could not be used at the point-of-care (POC) or point-of-need (PON). With the advent of microfluidics in the 1990s, hope arose again for small, fast, accurate POC/PON devices that could address critical diagnostic needs. The first reports of electrochemistry coupled with paper-based devices followed thereafter and now the field has exploded with contributions from around the globe. This review focuses on recent advances in the field, covering roughly two years of developments with both fabrication and applications before concluding with a summary, remaining challenges, and future directions.

电分析化学在诊断、医疗保健、环境监测和许多其他应用中具有不可思议的重要性。然而，电分析化学面临的一个挑战是处理复杂样品和/或区分具有相似氧化还原电位的分析物的能力。从历史上看，电化学一直与液相色谱和毛细管电泳等分离方法相结合来解决这个问题，但这导致复杂的设备无法在护理点（POC）或需求点（PON）使用。随着20世纪90年代微流体技术的出现，小型、快速、准确的POC/PON设备再次出现了希望，这些设备可以满足关键的诊断需求。电化学与纸质设备结合的第一份报告紧随其后，现在这个领域已经爆发了来自全球各地的贡献。这篇综述的重点是该领域的最新进展，涵盖了大约两年的制造和应用的发展，然后总结了总结，仍然存在的挑战和未来的方向。

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Impedance analysis of high-entropy alloy for ammonia synthesis 合成氨用高熵合金的阻抗分析

IF 6.9 2区化学 Q1 CHEMISTRY, PHYSICAL

Current Opinion in Electrochemistry

Pub Date : 2025-12-03 DOI: 10.1016/j.coelec.2025.101791

Daniela Silva , Paulo Molina , Luis Herrán , Diego Véliz , Magdalena Walczak , Mamié Sancy

Ammonia is gaining significant importance as a renewable energy carrier, driving global interest in sustainable production methods, such as electrochemical nitrogen or nitrate reduction. Due to the low yield in electrochemical ammonia synthesis, research on new catalyst materials, such as high-entropy alloys, has become increasingly significant, necessitating a deeper analysis of their catalytic behavior. In this context, electrochemical impedance spectroscopy is a valuable and versatile technique. This review presents a comprehensive impedance analysis of high-entropy alloys as catalysts for the electrochemical nitrogen reduction reaction and nitrogen oxoanions reduction reaction for ammonia generation at room temperature, highlighting the complexity of the system and the need for a multidisciplinary approach to understand the microstructural and electrochemical mechanisms.

氨作为一种可再生能源载体正变得越来越重要，推动了全球对可持续生产方法的兴趣，如电化学氮或硝酸盐还原。由于电化学合成氨的收率较低，对高熵合金等新型催化剂材料的研究日益重要，需要对其催化行为进行更深入的分析。在这种情况下，电化学阻抗谱是一种有价值的、通用的技术。本文综述了高熵合金作为室温下电化学氮还原反应和氮氧阴离子还原反应催化剂的阻抗分析，强调了系统的复杂性，以及需要多学科方法来理解微观结构和电化学机制。

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Enhanced reversibility of zinc anode for rechargeable zinc-air batteries: A joint computational and experimental investigation 可充电锌空气电池锌阳极可逆性的增强：计算与实验联合研究

IF 6.9 2区化学 Q1 CHEMISTRY, PHYSICAL

Current Opinion in Electrochemistry

Pub Date : 2025-12-02 DOI: 10.1016/j.coelec.2025.101793

Kai Wu , Jiaqi Mao , Fanghua Ning , Xiaoyu Liu , Jin Yi

Rechargeable zinc-air batteries are promising for energy storage owing to their high theoretical energy density, reliable safety performance, and the abundance of raw materials. Nevertheless, the practical application is significantly restrained by the poor reversibility of the zinc anode, which originates from the dissolution of the Zn anode, dendrite growth with shape change, hydrogen evolution, corrosion and passivation. The electrochemical processes at the Zn anode|electrolyte interface play a vital role on the performance of the Zn anode. In this review, the mechanisms of the anode associated with its challenges are summarized individually. Moreover, the recent advances in enhancing zinc anode reversibility through computational and experimental investigations are discussed. Finally, it provides insights into the challenges and perspectives for further research, which is expected to promote the development of rechargeable ZABs.

可充电锌空气电池具有理论能量密度高、安全性能可靠、原料丰富等优点，在储能领域具有广阔的应用前景。然而，锌阳极的可逆性较差，这主要源于锌阳极的溶解、枝晶随形状变化生长、析氢、腐蚀和钝化。锌阳极|电解质界面的电化学过程对锌阳极的性能起着至关重要的作用。在这篇综述中，分别总结了阳极的机制及其挑战。此外，还讨论了通过计算和实验研究提高锌阳极可逆性的最新进展。最后，提出了进一步研究的挑战和前景，以期促进可充电ZABs的发展。

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Electrochemical impedance spectroscopy for corrosion diagnosis of reinforced concrete 电化学阻抗谱在钢筋混凝土腐蚀诊断中的应用

IF 6.9 2区化学 Q1 CHEMISTRY, PHYSICAL

Current Opinion in Electrochemistry

Pub Date : 2025-12-01 DOI: 10.1016/j.coelec.2025.101790

Christopher L. Alexander

The application of electrochemical impedance spectroscopy (EIS) to reinforced concrete with the purpose of probing the characteristic of the steel and concrete interface was first introduced in the late 1970s. The impedance response is known to be sensitive to the corrosion state of the reinforcement; however, challenges persist in accurate relation of the impedance response to physical characteristics of the system. Since the initial studies, the use of EIS has expanded beyond the lab to field structures with the desire to nondestructively assess the rate of corrosion. A review is presented on the significant advancements and contributions to the application and analysis of the impedance response of steel in concrete with a description of the remaining challenges and outlook for expanded use.

20世纪70年代末，人们首次将电化学阻抗谱（EIS）应用于钢筋混凝土中，以探测钢与混凝土界面的特性。已知阻抗响应对钢筋的腐蚀状态敏感；然而，阻抗响应与系统物理特性的精确关系仍然存在挑战。自最初的研究以来，EIS的使用已经从实验室扩展到现场结构，希望能够无损地评估腐蚀速率。回顾了混凝土中钢筋阻抗响应的应用和分析的重大进展和贡献，描述了仍然存在的挑战和扩大使用的前景。

引用次数: 0

Electrochemical impedance spectroscopy of battery systems, including sodium materials 电池系统的电化学阻抗谱，包括钠材料

IF 6.9 2区化学 Q1 CHEMISTRY, PHYSICAL

Current Opinion in Electrochemistry

Pub Date : 2025-11-30 DOI: 10.1016/j.coelec.2025.101800

Renjie Liu, Derek C. Sinclair, Anthony R. West

An overview is given of the literature on current approaches to the measurement, analysis and interpretation of broadband impedance data and examples of its application to Na materials, cells and batteries. Standard 2-terminal measurements on full cells are often complemented by both 2- and 3-terminal measurements on a range of materials and cell configurations; this should enable identification of the different impedance contributions that control full cell operation. Data analysis usually revolves around equivalent circuit modelling; strategies to identify the most appropriate circuits are reviewed, including the increasing use of the distribution of relaxation times methodology. Interfacial phenomena are fundamental components of solid electrolyte interfaces and composite electrodes in operational batteries; these are reviewed for Na-based materials and systems.

概述了目前宽带阻抗数据的测量、分析和解释方法的文献，并举例说明了其在钠材料、电池和电池中的应用。对全电池的标准2端测量通常由对一系列材料和电池配置的2端和3端测量补充；这应该能够识别控制整个电池运行的不同阻抗贡献。数据分析通常围绕等效电路建模；回顾了确定最合适电路的策略，包括越来越多地使用松弛时间分布方法。界面现象是可操作电池中固体电解质界面和复合电极的基本组成部分；对na基材料和系统进行了综述。

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