Electrochemical science advances最新文献_第7页

Assessment of Dry Cathode Configuration in Anion Exchange Membrane Water Electrolysis: A Mini Review 阴离子交换膜电解中干阴极结构的评价：综述

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Electrochemical science advances Pub Date : 2025-08-22 DOI: 10.1002/elsa.70012

Kiran Kiran, Edwin Bumenn, Hans Kungl, Eva Jodat, André Karl, Rüdiger-A. Eichel

{"title":"Assessment of Dry Cathode Configuration in Anion Exchange Membrane Water Electrolysis: A Mini Review","authors":"Kiran Kiran, Edwin Bumenn, Hans Kungl, Eva Jodat, André Karl, Rüdiger-A. Eichel","doi":"10.1002/elsa.70012","DOIUrl":"https://doi.org/10.1002/elsa.70012","url":null,"abstract":"Anion exchange membrane (AEM) electrolysis is one of the most promising water electrolysis technologies, combining the advantages of proton exchange membrane (PEM) electrolysis, such as high gas purity, high current densities and dynamic operation, while using cheap transition metal electrocatalysts known from alkaline water electrolysis (AWE). AEM water electrolysis (AEMWE), when operated liquid (electrolyte or water) free (dry) at the cathode side, offers simplified water management, reducing the balance-of-plant. Numerous factors, such as cell design, membrane properties, flow rate of electrolyte and operation parameters, directly or indirectly, impact the performance of AEMWE, which becomes even more vital when the cathode compartment is operated liquid free. Herein, this work presents a comprehensive overview of several factors involved in the performance of a dry cathode AEMWE. Advancements and challenges in membrane materials, asymmetric electrolyte feeds and operating parameters were analysed. Finally, to have a durable and efficient AEMWE, this article discusses current development on the dry cathode AEMWE technology and outlines prospective avenues for further improving the system.","PeriodicalId":93746,"journal":{"name":"Electrochemical science advances","volume":"6 1","pages":""},"PeriodicalIF":4.1,"publicationDate":"2025-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://chemistry-europe.onlinelibrary.wiley.com/doi/epdf/10.1002/elsa.70012","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145983955","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Electrochemical science advances Pub Date : 2025-08-22

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Highly Sensitive Dopamine Electrochemical Sensor Using Pt Nanoparticles on CNTs/Polypyrrole Nanocomposites 基于纳米Pt纳米材料的高灵敏度多巴胺电化学传感器

IF 4.1

Electrochemical science advances Pub Date : 2025-08-10 DOI: 10.1002/elsa.70011

N. I. Nayem, S. Ahmed, Md. A. Rashed, Jahir Ahmed, M. Faisal, Jari S. Algethami, Ahmed Mohamed El-Toni, Farid A. Harraz

{"title":"Highly Sensitive Dopamine Electrochemical Sensor Using Pt Nanoparticles on CNTs/Polypyrrole Nanocomposites","authors":"N. I. Nayem, S. Ahmed, Md. A. Rashed, Jahir Ahmed, M. Faisal, Jari S. Algethami, Ahmed Mohamed El-Toni, Farid A. Harraz","doi":"10.1002/elsa.70011","DOIUrl":"https://doi.org/10.1002/elsa.70011","url":null,"abstract":"Dopamine (DA) plays a vital role as a neurotransmitter in the central nervous system (CNS), and its accurate quantification is essential for diagnosing neurological disorders. However, selective and sensitive detection of DA in complex biological matrices remains a challenge due to interference from coexisting biomolecules. In this study, a platinum nanoparticle-decorated carbon nanotubes/polypyrrole-carbon (Pt@CNTs/PPy-C) nanocomposite was synthesized via a facile two-step process involving ultrasonication and photo-reduction, eliminating the need for stabilizers or dispersants. Structural and morphological analysis confirmed the uniform distribution of Pt nanoparticles within the CNTs/PPy-C matrix, enhancing electrocatalytic activity. Electrochemical kinetic studies revealed that DA electro-oxidation on the nanocomposite-modified glassy carbon electrode (GCE) follows adsorption-controlled kinetics, with a transfer coefficient (α) of 0.51 and a heterogeneous rate constant of 8.37 s−1. Differential pulse voltammetry (DPV) demonstrated a high sensitivity of 3.45 µA µM−1 cm−2 over a linear range of 2.0–24.0 µM with a detection limit of 0.034 µM. The sensor exhibited outstanding selectivity for DA in the presence of various interfering species, along with excellent reproducibility, repeatability and stability. Additionally, the sensor demonstrated high accuracy and reliability in detecting DA in a commercial pharmaceutical formulation, with recovery rates ranging from 96.72% to 101.40%. These findings highlight the potential of the Pt@CNTs/PPy-C nanocomposite as a promising electrocatalyst for DA detection, contributing to the development of highly efficient electrochemical sensors for biomedical and pharmaceutical applications.","PeriodicalId":93746,"journal":{"name":"Electrochemical science advances","volume":"6 1","pages":""},"PeriodicalIF":4.1,"publicationDate":"2025-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://chemistry-europe.onlinelibrary.wiley.com/doi/epdf/10.1002/elsa.70011","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145987000","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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IF 4.1

Electrochemical science advances Pub Date : 2025-08-10

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IF 4.1

Electrochemical science advances Pub Date : 2025-08-10

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IF 4.1

Electrochemical science advances Pub Date : 2025-07-21

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Effect of Concentration of Lithium Bis(fluorosulfonyl)imide on the Performance of Silicon Anodes for Li-Ion Batteries 双（氟磺酰）亚胺锂浓度对锂离子电池硅负极性能的影响

IF 4.1

Electrochemical science advances Pub Date : 2025-07-21 DOI: 10.1002/elsa.70009

K. Asheim, N. P. Wagner, P. E. Vullum, C. E. L. Foss, J. P. Mæhlen, A. M. Svensson

{"title":"Effect of Concentration of Lithium Bis(fluorosulfonyl)imide on the Performance of Silicon Anodes for Li-Ion Batteries","authors":"K. Asheim, N. P. Wagner, P. E. Vullum, C. E. L. Foss, J. P. Mæhlen, A. M. Svensson","doi":"10.1002/elsa.70009","DOIUrl":"https://doi.org/10.1002/elsa.70009","url":null,"abstract":"The conventional electrolytes for Li-ion batteries are based on the <math>\u0000 <semantics>\u0000 <msub>\u0000 <mi>LiPF</mi>\u0000 <mn>6</mn>\u0000 </msub>\u0000 <annotation>${rm LiPF}_6$</annotation>\u0000 </semantics></math> salt and carbonate solvents. Due to challenges with the stability, alternative salts are sought, and lithium bis(fluorosulfonyl)imide (LiFSI) is an interesting candidate. In this work, we investigate the performance of concentrated electrolytes based on LiFSI (range 1–10 M) and carbonate solvents, in combination with low-cost, micron-sized silicon anodes. LiFSI has an excellent solubility, and by use of concentrated electrolytes, corrosion of the aluminium current collector on the cathode side can be avoided, which is otherwise a challenge. The 5 M LiFSI electrolyte (molar salt to solvent ratio of 1:2.5) shows a similar ohmic resistance and rate performance as the 1 M LiFSI electrolyte. The solid electrolyte interphase formed in 5 M LiFSI is thin and dominated by inorganic compounds, in particular LiF. For long-term galvanostatic cycling with a lower cut-off potential of 50 mV, the 1 M LiFSI electrolyte shows the best stability. However, by limiting the lithiation, and thus the expansion of the silicon by increasing the cut-off voltage to 120 mV, the cycling performance is similar for all electrolytes and electrodes deliver <math>\u0000 <semantics>\u0000 <mo>></mo>\u0000 <annotation>$>$</annotation>\u0000 </semantics></math> 1000 mAh/g for more than 300 cycles.","PeriodicalId":93746,"journal":{"name":"Electrochemical science advances","volume":"6 1","pages":""},"PeriodicalIF":4.1,"publicationDate":"2025-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://chemistry-europe.onlinelibrary.wiley.com/doi/epdf/10.1002/elsa.70009","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145993993","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Electrochemical science advances Pub Date : 2025-07-21

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IF 4.1

Electrochemical science advances Pub Date : 2025-07-13

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IF 4.1

Electrochemical science advances Pub Date : 2025-07-13

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