Current Opinion in Electrochemistry最新文献_第4页

Electrochemical hardness: A reactivity descriptor for the electrocatalytic activity of MN4 molecular catalysts for the reduction of O2 in aqueous media 电化学硬度：表征MN4分子催化剂在水介质中还原O2电催化活性的反应性描述符

IF 6.9 2区化学

Current Opinion in Electrochemistry Pub Date : 2026-02-01 Epub Date: 2025-11-04 DOI: 10.1016/j.coelec.2025.101779

Laura Scarpetta-Pizo , Luis Acuña-Saavedra , Ingrid Ponce , José H. Zagal

{"title":"Electrochemical hardness: A reactivity descriptor for the electrocatalytic activity of MN4 molecular catalysts for the reduction of O2 in aqueous media","authors":"Laura Scarpetta-Pizo , Luis Acuña-Saavedra , Ingrid Ponce , José H. Zagal","doi":"10.1016/j.coelec.2025.101779","DOIUrl":"10.1016/j.coelec.2025.101779","url":null,"abstract":"<div><div>Molecular catalysts, like metal complexes such as MN<sub>4</sub> or MN<sub>x</sub> molecular catalysts exhibit several reactivity descriptors: (i) the M−O<sub>2</sub> binding energy, (ii) the M(III)OH/(II) formal potential, (iii) the number of <em>d-</em>electrons in the MN4, (iv) the donor (M)-acceptor intermolecular hardness, and (v) π-electron graphene-MN4 delocalization factor. When oxygen reduction reaction (ORR) activity, expressed as (log <em>j</em>)<sub>E</sub> at constant potential, is plotted versus adsorption energy (<em>E</em><sub>ad</sub>) or versus the formal potential <em>E</em>°’M(III)/(II), the trends exhibit symmetrical volcano correlations. In this work, we consolidate and extend the concept of <em>electrochemical hardness (ΔE</em><sup><em>h</em></sup><em>)</em> as a reactivity descriptor for MN<sub>4</sub> molecular catalysts. This descriptor is defined as the potential separation between the two central formal potentials exhibited by surface-anchored MN4 molecular catalysts in the absence of O<sub>2</sub> in aqueous media. The catalytic activity for ORR increases as <em>ΔE</em><sup><em>h</em></sup> decreases, suggesting that for highly active catalysis, the two redox one-electron reversible processes tend to a minimum or even overlap. All these reactivity descriptors are not independent from each other and are closely related.</div></div>","PeriodicalId":11028,"journal":{"name":"Current Opinion in Electrochemistry","volume":"55 ","pages":"Article 101779"},"PeriodicalIF":6.9,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145594804","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

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

Current Opinion in Electrochemistry Pub Date : 2026-02-01 Epub Date: 2025-12-13 DOI: 10.1016/j.coelec.2025.101805

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

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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

Current Opinion in Electrochemistry Pub Date : 2026-02-01 Epub Date: 2025-12-09 DOI: 10.1016/j.coelec.2025.101801

Maxwell D. Bridges , Charles S. Henry

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Critical metrics for practical application-oriented rechargeable zinc-air batteries 面向实际应用的可充电锌空气电池的关键指标

IF 6.9 2区化学

Current Opinion in Electrochemistry Pub Date : 2026-02-01 Epub Date: 2025-11-15 DOI: 10.1016/j.coelec.2025.101784

Zhongxi Zhao , Yongfu Liu , Jianwen Yu , Jiangfeng Huang , Junshuo Lian , Yaoming Leng , Peng Tan

{"title":"Critical metrics for practical application-oriented rechargeable zinc-air batteries","authors":"Zhongxi Zhao , Yongfu Liu , Jianwen Yu , Jiangfeng Huang , Junshuo Lian , Yaoming Leng , Peng Tan","doi":"10.1016/j.coelec.2025.101784","DOIUrl":"10.1016/j.coelec.2025.101784","url":null,"abstract":"<div><div>The application of rechargeable zinc-air batteries (RZABs) is hindered by sluggish oxygen reaction kinetics at air electrodes and poor reversibility of zinc electrodes. This work analyzes the fundamental issues limiting the practical implementation of RZABs and proposes a practical application-oriented performance evaluation framework. For air electrodes, in-situ gas monitoring techniques are critically needed to accurately distinguish the electrochemical reaction pathways during the charging process of transition metal catalysts and the competitive mechanisms between carbon corrosion and oxygen evolution reactions. With respect to zinc electrodes, conventional low depth of discharge (DOD) testing conditions mask irreversible capacity loss under practical high-DOD (>20 %) operation, necessitating the establishment of a “limited zinc-high DOD” system to reliably assess electrode performance. Furthermore, full-cell design requires optimization of key parameters. The standardized evaluation framework proposed herein not only provides critical guidance for the industrialization of RZABs but also can be extended to other metal-air battery systems.</div></div>","PeriodicalId":11028,"journal":{"name":"Current Opinion in Electrochemistry","volume":"55 ","pages":"Article 101784"},"PeriodicalIF":6.9,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145691886","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Self-supported air cathode with enhanced mass transport for high-power zinc-air batteries 高功率锌-空气电池增强质量输运的自支撑空气阴极

IF 6.9 2区化学

Current Opinion in Electrochemistry Pub Date : 2026-02-01 Epub Date: 2025-11-30 DOI: 10.1016/j.coelec.2025.101792

Ran Ren, Haoyu Dong, Guanchao He, Gonglan Ye, Huilong Fei

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Electro-organic hydrodehalgenation of organic waste and their mechanistic understandings 有机废物电-有机加氢脱卤及其机理研究

IF 6.9 2区化学

Current Opinion in Electrochemistry Pub Date : 2025-12-01 Epub Date: 2025-10-25 DOI: 10.1016/j.coelec.2025.101774

Alexander C. Reidell, Christopher T. LeBarron, Seyyedamirhossein Hosseini

引用次数: 0

Electrochemical lateral flow assays: A new frontier for rapid and quantitative biosensing 电化学横向流动测定：快速定量生物传感的新前沿

IF 6.9 2区化学

Current Opinion in Electrochemistry Pub Date : 2025-12-01 Epub Date: 2025-08-28 DOI: 10.1016/j.coelec.2025.101750

Vernalyn Abarintos, Andrew Piper, Arben Merkoci

{"title":"Electrochemical lateral flow assays: A new frontier for rapid and quantitative biosensing","authors":"Vernalyn Abarintos, Andrew Piper, Arben Merkoci","doi":"10.1016/j.coelec.2025.101750","DOIUrl":"10.1016/j.coelec.2025.101750","url":null,"abstract":"<div><div>Electrochemical lateral flow assays (eLFAs) have emerged as a promising alternative to traditional colorimetric LFAs, particularly for applications requiring quantitative readouts and improved sensitivity. Over the past two years, significant advancements have been made in eLFA design, fabrication, and analytical performance, positioning them as promising candidates for decentralized diagnostics and point-of-care (POC) testing. This review highlights recent advances in electrode integration techniques, redox-based signal amplification strategies, and the incorporation of wireless and battery-free electrochemical readout platforms. Multiplexed detection and real-time wireless data transmission have also been demonstrated, further increasing the utility of eLFAs in clinical and field settings. Additionally, innovative strategies to control contact pressure, optimize sample flow, and maintain device stability are being explored to improve reproducibility and usability. Despite these advancements, challenges remain, including biofouling, variability in sample matrices, and the need for standardized protocols across platforms.</div></div>","PeriodicalId":11028,"journal":{"name":"Current Opinion in Electrochemistry","volume":"54 ","pages":"Article 101750"},"PeriodicalIF":6.9,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145096258","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Impedance of porous electrodes 多孔电极阻抗

IF 6.9 2区化学

Current Opinion in Electrochemistry Pub Date : 2025-12-01 Epub Date: 2025-10-10 DOI: 10.1016/j.coelec.2025.101764

Andrzej Lasia

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

Current Opinion in Electrochemistry Pub Date : 2025-12-01 Epub Date: 2025-10-10 DOI: 10.1016/j.coelec.2025.101767

Jenifer Rubio-Magnieto, Juan Bisquert

{"title":"Impedance spectroscopy of neurons, inductors and synapses: A path to understanding brain-like computation","authors":"Jenifer Rubio-Magnieto, Juan Bisquert","doi":"10.1016/j.coelec.2025.101767","DOIUrl":"10.1016/j.coelec.2025.101767","url":null,"abstract":"<div><div>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.</div></div>","PeriodicalId":11028,"journal":{"name":"Current Opinion in Electrochemistry","volume":"54 ","pages":"Article 101767"},"PeriodicalIF":6.9,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145412454","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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

Current Opinion in Electrochemistry Pub Date : 2025-12-01 Epub Date: 2025-10-01 DOI: 10.1016/j.coelec.2025.101763

Ehsan Rahimi

{"title":"Nanoscale corrosion analysis via in-situ surface potential mapping: Enhancing electrochemical insight with OL-EPM and AC-KPFM","authors":"Ehsan Rahimi","doi":"10.1016/j.coelec.2025.101763","DOIUrl":"10.1016/j.coelec.2025.101763","url":null,"abstract":"<div><div>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.</div></div>","PeriodicalId":11028,"journal":{"name":"Current Opinion in Electrochemistry","volume":"54 ","pages":"Article 101763"},"PeriodicalIF":6.9,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145358131","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0