Pub Date : 2024-12-18DOI: 10.1016/j.coelec.2024.101634
Robert Jungnickel, Kannan Balasubramanian
The integration of surface plasmon resonance (SPR) with electrochemistry constitutes a new analytical approach for the investigation of 2D materials (2DMs), such as the study of their electrochemical behavior or electrocatalytic properties. On the other hand, the use of a 2DM as an electrode combined with a plasmonic readout provides new opportunities for the fundamental study of electrochemical processes at the solid–liquid interface. In addition, 2D materials integrated in hyphenated electrochemical plasmonic devices enable the realization of biosensors utilizing novel transduction principles, based on their specialized physical properties. In this review, we collect recent progress in the use of combined electrochemistry-SPR approaches for the study of 2DM interfaces as well as devices with integrated 2DMs, which deliver additional analytical information or enable the realization of new kinds of sensors.
{"title":"Electrochemistry-coupled surface plasmon resonance on 2D materials for analysis at solid–liquid interfaces","authors":"Robert Jungnickel, Kannan Balasubramanian","doi":"10.1016/j.coelec.2024.101634","DOIUrl":"10.1016/j.coelec.2024.101634","url":null,"abstract":"<div><div>The integration of surface plasmon resonance (SPR) with electrochemistry constitutes a new analytical approach for the investigation of 2D materials (2DMs), such as the study of their electrochemical behavior or electrocatalytic properties. On the other hand, the use of a 2DM as an electrode combined with a plasmonic readout provides new opportunities for the fundamental study of electrochemical processes at the solid–liquid interface. In addition, 2D materials integrated in hyphenated electrochemical plasmonic devices enable the realization of biosensors utilizing novel transduction principles, based on their specialized physical properties. In this review, we collect recent progress in the use of combined electrochemistry-SPR approaches for the study of 2DM interfaces as well as devices with integrated 2DMs, which deliver additional analytical information or enable the realization of new kinds of sensors.</div></div>","PeriodicalId":11028,"journal":{"name":"Current Opinion in Electrochemistry","volume":"50 ","pages":"Article 101634"},"PeriodicalIF":7.9,"publicationDate":"2024-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143158168","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-11-13DOI: 10.1016/j.coelec.2024.101606
Jean Rouger, Sara Cavaliere, Frédéric Jaouen
The use of single-atom catalysts (SACs) for acidic oxygen evolution reaction (OER) is an emerging field of research with prospects to maximize the dispersion of active sites and the metal utilization. Therefore, it is promising for reducing the amount of noble metal needed to efficiently electrocatalyze the OER. The objective is to achieve comparable activity for conventionally unsupported and supported iridium and ruthenium oxide catalysts but with significantly lower loading of precious metal. The present review summarizes the recent progress in this field, discussing the preparation of such materials, the structural characterization techniques suited to probe single metal atoms as well as the hitherto achieved activity and stability in acidic OER conditions. We conclude the short review with a summary of the main observations and perspectives for this class of materials.
{"title":"Single-atom catalysts for oxygen evolution reaction in acidic media","authors":"Jean Rouger, Sara Cavaliere, Frédéric Jaouen","doi":"10.1016/j.coelec.2024.101606","DOIUrl":"10.1016/j.coelec.2024.101606","url":null,"abstract":"<div><div>The use of single-atom catalysts (SACs) for acidic oxygen evolution reaction (OER) is an emerging field of research with prospects to maximize the dispersion of active sites and the metal utilization. Therefore, it is promising for reducing the amount of noble metal needed to efficiently electrocatalyze the OER. The objective is to achieve comparable activity for conventionally unsupported and supported iridium and ruthenium oxide catalysts but with significantly lower loading of precious metal. The present review summarizes the recent progress in this field, discussing the preparation of such materials, the structural characterization techniques suited to probe single metal atoms as well as the hitherto achieved activity and stability in acidic OER conditions. We conclude the short review with a summary of the main observations and perspectives for this class of materials.</div></div>","PeriodicalId":11028,"journal":{"name":"Current Opinion in Electrochemistry","volume":"49 ","pages":"Article 101606"},"PeriodicalIF":7.9,"publicationDate":"2024-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142745609","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}
Pub Date : 2024-11-09DOI: 10.1016/j.coelec.2024.101603
Xingyi Shi , Qixing Wu
The performance of flow batteries is critically influenced by mass, ion, and electron transport processes and electrochemical reactions within the heterogenous porous electrodes. Understanding these processes at the pore scale is essential because it is at this level that the fundamental mechanisms governing transport and reaction dynamics occur. However, investigating pore scale mass transfer phenomena presents significant challenges, including the complexity of resolving intricate pore geometries of electrodes and the opaque nature of the flow cells, which hinders in-operando visualization. This mini review aims to summarize recent advances in numerical modeling and experimental visualization of pore scale mass transfer phenomena in flow batteries. By highlighting the importance of pore scale insights, we provide key findings and propose future research directions that focus on advancing pore scale modeling and developing innovative experimental methods to achieve a deeper understanding of pore scale transport phenomena, which are vital for next-generation electrode designs.
{"title":"Recent understanding on pore scale mass transfer phenomena of flow batteries: Theoretical simulation and experimental visualization","authors":"Xingyi Shi , Qixing Wu","doi":"10.1016/j.coelec.2024.101603","DOIUrl":"10.1016/j.coelec.2024.101603","url":null,"abstract":"<div><div>The performance of flow batteries is critically influenced by mass, ion, and electron transport processes and electrochemical reactions within the heterogenous porous electrodes. Understanding these processes at the pore scale is essential because it is at this level that the fundamental mechanisms governing transport and reaction dynamics occur. However, investigating pore scale mass transfer phenomena presents significant challenges, including the complexity of resolving intricate pore geometries of electrodes and the opaque nature of the flow cells, which hinders in-operando visualization. This mini review aims to summarize recent advances in numerical modeling and experimental visualization of pore scale mass transfer phenomena in flow batteries. By highlighting the importance of pore scale insights, we provide key findings and propose future research directions that focus on advancing pore scale modeling and developing innovative experimental methods to achieve a deeper understanding of pore scale transport phenomena, which are vital for next-generation electrode designs.</div></div>","PeriodicalId":11028,"journal":{"name":"Current Opinion in Electrochemistry","volume":"49 ","pages":"Article 101603"},"PeriodicalIF":7.9,"publicationDate":"2024-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142719661","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}
Pub Date : 2024-11-08DOI: 10.1016/j.coelec.2024.101605
Fei-Teng Wang , Jun Cheng
Metal-water interfaces are central to a wide range of crucial processes, including energy storage, energy conversion, and corrosion. Understanding the detailed structure and dynamics of water molecules at these interfaces is essential for unraveling the fundamental mechanisms driving these processes at the molecular level. Experimentally, a detection of interfacial structure and dynamics with high temporal and spatial resolution is lacking. The advances in machine learning molecular dynamics are offering an opportunity to address this issue with high accuracy and efficiency. To offer insights into the structure and dynamics, this review summarizes the progress made in determining the structure and dynamics of interfacial water molecules using molecular dynamics simulations. The possible application of machine learning molecular dynamics to address the fundamental challenges of simulating metal/water interfaces are also discussed.
{"title":"Investigating water structure and dynamics at metal/water interfaces from classical, ab initio to machine learning molecular dynamics","authors":"Fei-Teng Wang , Jun Cheng","doi":"10.1016/j.coelec.2024.101605","DOIUrl":"10.1016/j.coelec.2024.101605","url":null,"abstract":"<div><div>Metal-water interfaces are central to a wide range of crucial processes, including energy storage, energy conversion, and corrosion. Understanding the detailed structure and dynamics of water molecules at these interfaces is essential for unraveling the fundamental mechanisms driving these processes at the molecular level. Experimentally, a detection of interfacial structure and dynamics with high temporal and spatial resolution is lacking. The advances in machine learning molecular dynamics are offering an opportunity to address this issue with high accuracy and efficiency. To offer insights into the structure and dynamics, this review summarizes the progress made in determining the structure and dynamics of interfacial water molecules using molecular dynamics simulations. The possible application of machine learning molecular dynamics to address the fundamental challenges of simulating metal/water interfaces are also discussed.</div></div>","PeriodicalId":11028,"journal":{"name":"Current Opinion in Electrochemistry","volume":"49 ","pages":"Article 101605"},"PeriodicalIF":7.9,"publicationDate":"2024-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142701745","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}
Pub Date : 2024-11-07DOI: 10.1016/j.coelec.2024.101600
Kun Zhang , Menglian Zheng
Aqueous zinc-ion batteries (AZIBs) have attracted widespread attention for large-scale energy storage. However, most of the practical phenomena assocaited with AZIBs can only be explained by using infinitely modified model theories; thus, the underlying mechanisms of reactions in the AZIBs remains challenging to characterize. The dynamic evolution in AZIBs' response to applied bias potentials makes it difficult to accurately observe the behavior with current techniques in a non-vacuum environment. In response, theoretical simulations have been widely conducted to investigate the mechanisms of reactions occurring in the AZIBs. These theoretical simulations can considerably improve the understanding of the fundamental mechanisms, and further guide the AZIBs development. Density functional theory (DFT) calculations, molecular dynamics (MD) simulations and COMSOL simulations are three common approaches in the literature, which correspond to atomic-scale, molecular-scale and mesoscale analyses, respectively. Here, we summarize the key insights gained from these simulations to date and present our perspective on future research directions within this field.
{"title":"How simulations help better understand mechanism and design materials? Learning from aqueous zinc-ion batteries","authors":"Kun Zhang , Menglian Zheng","doi":"10.1016/j.coelec.2024.101600","DOIUrl":"10.1016/j.coelec.2024.101600","url":null,"abstract":"<div><div>Aqueous zinc-ion batteries (AZIBs) have attracted widespread attention for large-scale energy storage. However, most of the practical phenomena assocaited with AZIBs can only be explained by using infinitely modified model theories; thus, the underlying mechanisms of reactions in the AZIBs remains challenging to characterize. The dynamic evolution in AZIBs' response to applied bias potentials makes it difficult to accurately observe the behavior with current techniques in a non-vacuum environment. In response, theoretical simulations have been widely conducted to investigate the mechanisms of reactions occurring in the AZIBs. These theoretical simulations can considerably improve the understanding of the fundamental mechanisms, and further guide the AZIBs development. Density functional theory (DFT) calculations, molecular dynamics (MD) simulations and COMSOL simulations are three common approaches in the literature, which correspond to atomic-scale, molecular-scale and mesoscale analyses, respectively. Here, we summarize the key insights gained from these simulations to date and present our perspective on future research directions within this field.</div></div>","PeriodicalId":11028,"journal":{"name":"Current Opinion in Electrochemistry","volume":"49 ","pages":"Article 101600"},"PeriodicalIF":7.9,"publicationDate":"2024-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142745608","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}
Pub Date : 2024-11-07DOI: 10.1016/j.coelec.2024.101604
Lyuming Pan , Manrong Song , Nimra Muzaffar , Liuping Chen , Chao Ji , Shengxin Yao , Junhui Xu , Weixiong Wu , Yubai Li , Jie Chen , Jiayou Ren , Bin Liu , Lei Wei
Large-scale, long-duration energy storage systems are crucial to achieving the goal of carbon neutrality. Among the various existing energy storage technologies, redox flow batteries have the potential to store a significant amount of energy. In the redox flow battery system, the above-ground electrolyte storage tanks are usually bulky and expensive. Underground salt caverns, which have a space of hundred-thousand cubic meters, are being explored as potential alternatives to conventional electrolyte tanks for storing electrolytes. The salt caverns possess high safety, large storage capacity, constant temperature, and low cost, making salt cavern redox flow batteries promising next-generation energy storage systems in the era of carbon neutrality. This study reviews the fundamental concepts and research progress of salt cavern redox flow batteries and explores recently proposed organic active substances under near-neutral pH conditions. Prospects of salt cavern redox flow batteries are summarized and analyzed.
{"title":"Salt cavern redox flow battery: The next-generation long-duration, large-scale energy storage system","authors":"Lyuming Pan , Manrong Song , Nimra Muzaffar , Liuping Chen , Chao Ji , Shengxin Yao , Junhui Xu , Weixiong Wu , Yubai Li , Jie Chen , Jiayou Ren , Bin Liu , Lei Wei","doi":"10.1016/j.coelec.2024.101604","DOIUrl":"10.1016/j.coelec.2024.101604","url":null,"abstract":"<div><div>Large-scale, long-duration energy storage systems are crucial to achieving the goal of carbon neutrality. Among the various existing energy storage technologies, redox flow batteries have the potential to store a significant amount of energy. In the redox flow battery system, the above-ground electrolyte storage tanks are usually bulky and expensive. Underground salt caverns, which have a space of hundred-thousand cubic meters, are being explored as potential alternatives to conventional electrolyte tanks for storing electrolytes. The salt caverns possess high safety, large storage capacity, constant temperature, and low cost, making salt cavern redox flow batteries promising next-generation energy storage systems in the era of carbon neutrality. This study reviews the fundamental concepts and research progress of salt cavern redox flow batteries and explores recently proposed organic active substances under near-neutral pH conditions. Prospects of salt cavern redox flow batteries are summarized and analyzed.</div></div>","PeriodicalId":11028,"journal":{"name":"Current Opinion in Electrochemistry","volume":"49 ","pages":"Article 101604"},"PeriodicalIF":7.9,"publicationDate":"2024-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142701744","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}
Pub Date : 2024-11-06DOI: 10.1016/j.coelec.2024.101602
K. Sravan Kumar , S. Mateo , A.R. de la Osa , P. Sánchez , A. de Lucas-Consuegra
Ionic conductive membranes have provided significant advantages in low-temperature water electrolysis configurations, but their poor stability and high cost have prompted researchers to develop various types of membrane-less electrolysis configurations of reduced design complexity and lower costs. This paper reviews recent studies in the field, comparing the results obtained with different approaches and critically advising about the main advantages and challenges to be overcome. Notable among these is the electrolyte flow-by strategy, which uses closely spaced planar electrodes and laminar flow to keep hydrogen and oxygen bubbles separated without a membrane. Various other approaches have also been investigated such as: flow-through electrodes, bubbles free gas diffusion electrodes, organic-assisted electrolysis process and microbial electrolysis cells. The different approaches discussed on the manuscript generates significant interest within the scientific community, offering an opportunity to simplify innovative electrolysis configurations addressing new scientific challenges associated with traditional electrolysis methods.
{"title":"Advancements in membrane-less electrolysis configurations: Innovations and challenges","authors":"K. Sravan Kumar , S. Mateo , A.R. de la Osa , P. Sánchez , A. de Lucas-Consuegra","doi":"10.1016/j.coelec.2024.101602","DOIUrl":"10.1016/j.coelec.2024.101602","url":null,"abstract":"<div><div>Ionic conductive membranes have provided significant advantages in low-temperature water electrolysis configurations, but their poor stability and high cost have prompted researchers to develop various types of membrane-less electrolysis configurations of reduced design complexity and lower costs. This paper reviews recent studies in the field, comparing the results obtained with different approaches and critically advising about the main advantages and challenges to be overcome. Notable among these is the electrolyte flow-by strategy, which uses closely spaced planar electrodes and laminar flow to keep hydrogen and oxygen bubbles separated without a membrane. Various other approaches have also been investigated such as: flow-through electrodes, bubbles free gas diffusion electrodes, organic-assisted electrolysis process and microbial electrolysis cells. The different approaches discussed on the manuscript generates significant interest within the scientific community, offering an opportunity to simplify innovative electrolysis configurations addressing new scientific challenges associated with traditional electrolysis methods.</div></div>","PeriodicalId":11028,"journal":{"name":"Current Opinion in Electrochemistry","volume":"49 ","pages":"Article 101602"},"PeriodicalIF":7.9,"publicationDate":"2024-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142701788","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}
Pub Date : 2024-11-02DOI: 10.1016/j.coelec.2024.101599
Xu Xiao , Zhuojun Zhang , Aijing Yan , Yasen Hao , Kai Sun , Peng Tan
Developing rechargeable lithium-carbon dioxide batteries is regarded as a promising direction for next-generation energy storage systems. Stabilizing lithium oxalate as the final product for lithium-carbon dioxide batteries significantly decreases the overpotential and improves energy efficiency, accelerating the reaction kinetics. This work provides a timely report of the latest progress and the remaining challenges of lithium oxalate-based lithium-carbon dioxide batteries. The reaction products and mechanism based on two-electron oxalate products are introduced. The advances in electrocatalyst design are summarized. Moreover, electrolyte modulation, including the use of lithium salts and redox mediators, for improving energy efficiency is discussed. Future research should focus on solid/soluble catalyst stability and operating management. This work aims to support the continuous and robust advancement of rechargeable lithium-carbon dioxide batteries.
{"title":"Lithium oxalate-based lithium-carbon dioxide batteries with high energy efficiency","authors":"Xu Xiao , Zhuojun Zhang , Aijing Yan , Yasen Hao , Kai Sun , Peng Tan","doi":"10.1016/j.coelec.2024.101599","DOIUrl":"10.1016/j.coelec.2024.101599","url":null,"abstract":"<div><div>Developing rechargeable lithium-carbon dioxide batteries is regarded as a promising direction for next-generation energy storage systems. Stabilizing lithium oxalate as the final product for lithium-carbon dioxide batteries significantly decreases the overpotential and improves energy efficiency, accelerating the reaction kinetics. This work provides a timely report of the latest progress and the remaining challenges of lithium oxalate-based lithium-carbon dioxide batteries. The reaction products and mechanism based on two-electron oxalate products are introduced. The advances in electrocatalyst design are summarized. Moreover, electrolyte modulation, including the use of lithium salts and redox mediators, for improving energy efficiency is discussed. Future research should focus on solid/soluble catalyst stability and operating management. This work aims to support the continuous and robust advancement of rechargeable lithium-carbon dioxide batteries.</div></div>","PeriodicalId":11028,"journal":{"name":"Current Opinion in Electrochemistry","volume":"49 ","pages":"Article 101599"},"PeriodicalIF":7.9,"publicationDate":"2024-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142701787","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}
Pub Date : 2024-10-31DOI: 10.1016/j.coelec.2024.101601
Congfan Zhao , Shu Yuan , Xiaojing Cheng , Fengdi Tu , Jingwei Zhou , Shuiyun Shen , Jiewei Yin , Xiaohui Yan , Junliang Zhang
Limited by the poor understanding of reaction and transport related issues in the porous transport layers and catalyst layers from the conventional electrode-based characterizations, the electrode engineering method targeting to improve the proton exchange membrane water electrolysis performance is lacking in efficiency. Model electrodes, which refer to electrochemical devices for mimicking the reaction and transport processes in practical electrolyzers, have emerged recently to provide both temporal and spatial high-precision measurement for these issues. In this review, recently proposed different model electrode configurations to investigate the transport and reaction related issues in porous transport layers and catalyst layers are summarized, followed by a perspective of future efficient electrode engineering methods based on findings with the assistance of model electrodes.
{"title":"Applications of model electrode for investigations of reaction and transport issues in proton exchange membrane water electrolyzer","authors":"Congfan Zhao , Shu Yuan , Xiaojing Cheng , Fengdi Tu , Jingwei Zhou , Shuiyun Shen , Jiewei Yin , Xiaohui Yan , Junliang Zhang","doi":"10.1016/j.coelec.2024.101601","DOIUrl":"10.1016/j.coelec.2024.101601","url":null,"abstract":"<div><div>Limited by the poor understanding of reaction and transport related issues in the porous transport layers and catalyst layers from the conventional electrode-based characterizations, the electrode engineering method targeting to improve the proton exchange membrane water electrolysis performance is lacking in efficiency. Model electrodes, which refer to electrochemical devices for mimicking the reaction and transport processes in practical electrolyzers, have emerged recently to provide both temporal and spatial high-precision measurement for these issues. In this review, recently proposed different model electrode configurations to investigate the transport and reaction related issues in porous transport layers and catalyst layers are summarized, followed by a perspective of future efficient electrode engineering methods based on findings with the assistance of model electrodes.</div></div>","PeriodicalId":11028,"journal":{"name":"Current Opinion in Electrochemistry","volume":"49 ","pages":"Article 101601"},"PeriodicalIF":7.9,"publicationDate":"2024-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142701786","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}
Pub Date : 2024-10-23DOI: 10.1016/j.coelec.2024.101598
Na Liu, Wen Ju, Robert Francke
The electrochemical CO2 reduction reaction (eCO2RR) to multi-carbon products holds the potential to generate valuable building blocks for production of chemicals using renewable electricity, thereby diminishing the dependence on fossil feedstocks. The crucial mechanistic step in this process involves the electrochemical C–C coupling, primarily taking place on metallic Cu surfaces. However, these metallic surfaces pose mechanistic unclarities due to their structural complexity, leading to intricate mechanistic paths and difficulties in identifying the genuine catalytically active sites. In contrast, molecular catalysts with well-defined structures may offer distinctive active sites for the reaction, although their utilization remains relatively unexplored. Recent advancements in Cu-based organometallic structures have demonstrated significant potential for eCO2RR, particularly in C–C coupling toward C2 products such as C2H4 and C2H5OH. These developments are summarized and discussed herein, both in terms of catalyst development and mechanistic understanding.
{"title":"Molecular copper catalysts for electro-reductive homocoupling of CO2 towards C2 compounds","authors":"Na Liu, Wen Ju, Robert Francke","doi":"10.1016/j.coelec.2024.101598","DOIUrl":"10.1016/j.coelec.2024.101598","url":null,"abstract":"<div><div>The electrochemical CO<sub>2</sub> reduction reaction (eCO<sub>2</sub>RR) to multi-carbon products holds the potential to generate valuable building blocks for production of chemicals using renewable electricity, thereby diminishing the dependence on fossil feedstocks. The crucial mechanistic step in this process involves the electrochemical C–C coupling, primarily taking place on metallic Cu surfaces. However, these metallic surfaces pose mechanistic unclarities due to their structural complexity, leading to intricate mechanistic paths and difficulties in identifying the genuine catalytically active sites. In contrast, molecular catalysts with well-defined structures may offer distinctive active sites for the reaction, although their utilization remains relatively unexplored. Recent advancements in Cu-based organometallic structures have demonstrated significant potential for eCO<sub>2</sub>RR, particularly in C–C coupling toward C<sub>2</sub> products such as C<sub>2</sub>H<sub>4</sub> and C<sub>2</sub>H<sub>5</sub>OH. These developments are summarized and discussed herein, both in terms of catalyst development and mechanistic understanding.</div></div>","PeriodicalId":11028,"journal":{"name":"Current Opinion in Electrochemistry","volume":"49 ","pages":"Article 101598"},"PeriodicalIF":7.9,"publicationDate":"2024-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142701785","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}
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