Current Opinion in Electrochemistry最新文献_第3页

Measuring the flatband potential in 2D semiconductors: Pitfalls and a possible SECCM solution 测量二维半导体中的平带电位：陷阱和可能的SECCM解决方案

IF 7.9 2区化学

Current Opinion in Electrochemistry Pub Date : 2025-04-28 DOI: 10.1016/j.coelec.2025.101703

Ava R. Chard, Justin B. Sambur

{"title":"Measuring the flatband potential in 2D semiconductors: Pitfalls and a possible SECCM solution","authors":"Ava R. Chard, Justin B. Sambur","doi":"10.1016/j.coelec.2025.101703","DOIUrl":"10.1016/j.coelec.2025.101703","url":null,"abstract":"<div><div>The flatband potential (<em>V</em><sub>fb</sub>) is a critical parameter in semiconductor electrochemistry, defining the potential at which no excess charge exists at the semiconductor/electrolyte interface. It serves as a key reference for interpreting charge transfer kinetics and current–voltage behavior. However, conventional methods like Mott–Schottky analysis fail for atomically thin 2D materials due to the breakdown of the depletion approximation. This perspective examines the limitations of traditional <em>V</em><sub>fb</sub> measurements for 2D semiconductors and the experimental challenges that arise. To address these issues, we propose using scanning electrochemical cell microscopy (SECCM) to spatially resolve the potential of zero charge (<em>V</em><sub>pzc</sub>), equivalent to <em>V</em><sub>fb</sub>. This approach mitigates sample heterogeneity issues, such as pinholes or multilayer defects, and offers a pathway to more accurate electrochemical characterization. Ultimately, this method will enhance understanding of current–potential behavior in 2D materials, supporting the design of advanced systems for photoelectrocatalysis, energy conversion, and sensing.</div></div>","PeriodicalId":11028,"journal":{"name":"Current Opinion in Electrochemistry","volume":"52 ","pages":"Article 101703"},"PeriodicalIF":7.9,"publicationDate":"2025-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144083872","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

Operando methods for the elucidation of electrolyte effects in electrocatalysis 阐明电催化中电解质效应的操作方法

IF 7.9 2区化学

Current Opinion in Electrochemistry Pub Date : 2025-04-17 DOI: 10.1016/j.coelec.2025.101700

Kees E. Kolmeijer, Rik V. Mom

引用次数: 0

Effects of electrolyte cations on the oxygen evolution reaction 电解质阳离子对析氧反应的影响

IF 7.9 2区化学

Current Opinion in Electrochemistry Pub Date : 2025-04-16 DOI: 10.1016/j.coelec.2025.101697

Boqiang Chen, Dunwei Wang, Matthias M. Waegele

引用次数: 0

3D-printed thermoplastic sensors for electrochemical biosensing 用于电化学生物传感的3d打印热塑性传感器

IF 7.9 2区化学

Current Opinion in Electrochemistry Pub Date : 2025-04-15 DOI: 10.1016/j.coelec.2025.101699

Christos Kokkinos

引用次数: 0

Cation effects in electrochemical CO2 reduction 电化学CO2还原中的阳离子效应

IF 7.9 2区化学

Current Opinion in Electrochemistry Pub Date : 2025-04-14 DOI: 10.1016/j.coelec.2025.101698

Adnan Ozden , Yanwei Lum

{"title":"Cation effects in electrochemical CO2 reduction","authors":"Adnan Ozden , Yanwei Lum","doi":"10.1016/j.coelec.2025.101698","DOIUrl":"10.1016/j.coelec.2025.101698","url":null,"abstract":"<div><div>Electrochemical CO<sub>2</sub> reduction (CO<sub>2</sub>R) provides a pathway toward the sustainable production of chemicals. Recent catalyst- and system-level innovations have enabled electrosynthesis of multi-carbon products at practical productivities (>200 mA cm<sup>−2</sup>) and single-pass CO<sub>2</sub> conversion efficiencies (>80 %). However, practical CO<sub>2</sub>R requires high single product selectivity (>85 %) without compromising readily-achieved metrics. Coupling these metrics in a single system warrants clear understanding of the electrical double layer at the catalyst–electrolyte interface. Combining selective catalysts with cation effects can effectively tune CO<sub>2</sub>R kinetics at the catalyst–electrolyte interface. Here we overview recent progress and current understanding on the sophisticated nature of the cation effects and underscore critical parameters that influence cation distributions in the electrical double layer. We highlight the emerging characterization and computational approaches to elucidate cation effects on CO<sub>2</sub>R. Finally, we emphasize research directions through which cation effects could be coupled with other micro-reaction environment tuning strategies for further selectivity and efficiency improvements.</div></div>","PeriodicalId":11028,"journal":{"name":"Current Opinion in Electrochemistry","volume":"51 ","pages":"Article 101698"},"PeriodicalIF":7.9,"publicationDate":"2025-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143886949","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

Nanoconfined constructs for electrochemical aptamer-based in vivo biosensing 基于电化学适体体的体内生物传感纳米结构

IF 7.9 2区化学

Current Opinion in Electrochemistry Pub Date : 2025-04-11 DOI: 10.1016/j.coelec.2025.101695

Grayson F. Huldin , Junming Huang , Kaiyu X. Fu

{"title":"Nanoconfined constructs for electrochemical aptamer-based in vivo biosensing","authors":"Grayson F. Huldin , Junming Huang , Kaiyu X. Fu","doi":"10.1016/j.coelec.2025.101695","DOIUrl":"10.1016/j.coelec.2025.101695","url":null,"abstract":"<div><div>In the last two decades, electrochemical aptamer-based (EAB) sensors have grown rapidly due to their high sensitivity, good selectivity, excellent biocompatibility, and flexible architectures among the wide range of biosensing platforms. Yet, achieving continuous, long-term, and <em>in vivo</em> monitoring remains challenging due to obstacles like device miniaturization, signal amplification, and sensor stability. To tackle these hurdles, researchers are leveraging nanostructured electrodes, leading to new EAB designs with improved <em>in vivo</em> biosensing performance. This opinion provides a brief overview of the development and latest progress in nanoconfined constructs for EAB <em>in vivo</em> biosensing. We illustrate fundamental sensing principles, the various nanostructures being explored, and their respective advantages. These nanostructured EABs hold promise for applications spanning disease diagnostics, environmental surveillance, and food safety management. Finally, we address the persistent challenges EABs face and discuss potential future directions, offering insights into how these sensors can continue to evolve and foster more effective healthcare technologies.</div></div>","PeriodicalId":11028,"journal":{"name":"Current Opinion in Electrochemistry","volume":"51 ","pages":"Article 101695"},"PeriodicalIF":7.9,"publicationDate":"2025-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143895850","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

Expanding our view on active sites in electrocatalysis 拓展了我们对电催化活性位点的认识

IF 7.9 2区化学

Current Opinion in Electrochemistry Pub Date : 2025-04-11 DOI: 10.1016/j.coelec.2025.101692

Ana M. Gómez–Marín , Katrin F. Domke

{"title":"Expanding our view on active sites in electrocatalysis","authors":"Ana M. Gómez–Marín , Katrin F. Domke","doi":"10.1016/j.coelec.2025.101692","DOIUrl":"10.1016/j.coelec.2025.101692","url":null,"abstract":"<div><div>At the heart of electrocatalyst design and development lies the concept of active sites that are usually identified as those sites for adsorption where the conversion of interest occurs. However, electrochemical interfaces are complex systems where the exact structure and dynamics of interfacial species during a reaction greatly depend on the local reactive microenvironment, including co-adsorbates and solvent molecules, that may include structural transformations upon adsorption, the charge-transfer dynamics, and/or the <em>x,y</em> charge-induced electric field distribution. We review the concept of active sites in electrocatalysis within these lines in light of recent studies that point out the necessity to expand the still widely spread idea of quasi-static atomic-scale sites toward the picture of a dynamically reactive microenvironment: the active site can extend over several tens on nanometers due to surface structural transformations during the reaction, includes interdependent components such as electrode and electrolyte as well as target reactant geometric and electronic structures, and often spontaneously rearranges <em>during</em> the electrocatalytic reaction. Thus, to define optimal reactions conditions, the reactive microenvironment as a whole needs to be considered.</div></div>","PeriodicalId":11028,"journal":{"name":"Current Opinion in Electrochemistry","volume":"51 ","pages":"Article 101692"},"PeriodicalIF":7.9,"publicationDate":"2025-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143906726","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

Recent advancements related to silver-based electrocatalysts for carbon dioxide reduction reaction to carbon monoxide 银基电催化剂在二氧化碳还原成一氧化碳反应中的最新进展

IF 7.9 2区化学

Current Opinion in Electrochemistry Pub Date : 2025-04-11 DOI: 10.1016/j.coelec.2025.101696

Cristina Tricella, Mohsin Muhyuddin, Roberto Nisticò, Sergio Tosoni, Carlo Santoro

{"title":"Recent advancements related to silver-based electrocatalysts for carbon dioxide reduction reaction to carbon monoxide","authors":"Cristina Tricella, Mohsin Muhyuddin, Roberto Nisticò, Sergio Tosoni, Carlo Santoro","doi":"10.1016/j.coelec.2025.101696","DOIUrl":"10.1016/j.coelec.2025.101696","url":null,"abstract":"<div><div>Electrochemical CO<sub>2</sub> reduction reaction (CO<sub>2</sub>RR) is a progressive step toward the reduction of planetary carbon footprint. In this way, CO<sub>2</sub> can be valorized into valuable products, and particularly, CO<sub>2</sub> can be reduced to gaseous products (e.g. CO or methane) or into liquid products (i.e. C<sub>1</sub>, C<sub>2</sub>, C<sub>3</sub>, etc.). Interestingly, CO<sub>2</sub>RR and hydrogen reduction reaction (HER) are competitive reactions; therefore, syngas (CO + H<sub>2</sub>) can also be produced at different H<sub>2</sub>:CO ratios. Depending on the transition metal used as an electrocatalyst for the CO<sub>2</sub>RR, the selectivity toward a specific product can be properly tuned. In this opinion, the attention is focused on the reduction of CO<sub>2</sub> to CO using Ag-based electrocatalysts. Reaction mechanisms to produce H<sub>2</sub>, CO, and formate are described and highlighted. The effect of the morphology is described, and the performance of Ag-based electrocatalysts toward CO<sub>2</sub>-to-CO and syngas production is presented, focusing on the recent available literature.</div></div>","PeriodicalId":11028,"journal":{"name":"Current Opinion in Electrochemistry","volume":"51 ","pages":"Article 101696"},"PeriodicalIF":7.9,"publicationDate":"2025-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143922936","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

Unlocking emerging catalytic applications of single-entity collision electrochemistry 解锁单一实体碰撞电化学的新兴催化应用

IF 7.9 2区化学

Current Opinion in Electrochemistry Pub Date : 2025-04-08 DOI: 10.1016/j.coelec.2025.101694

Yixiao Wang, Wei Ma

引用次数: 0

Overcoming dichotomy between surface and bulk of electrode: Conducting polymers 克服电极表面和体积之间的二分法：导电聚合物

IF 7.9 2区化学

Current Opinion in Electrochemistry Pub Date : 2025-04-04 DOI: 10.1016/j.coelec.2025.101691

Viktor Gueskine , Penghui Ding , Reverant Crispin , Mikhail Vagin

引用次数: 0