Electrochemical science advances最新文献

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Dynamic Reconstruction of Metal–Organic Framework and Metal–Organic Framework-Derived Electrocatalysts for Bifunctional Oxygen Electrocatalysis in Alkaline Energy Devices 金属-有机骨架及金属-有机骨架衍生电催化剂在碱性能量装置中双功能氧电催化的动态重构
IF 4.7
Electrochemical science advances Pub Date : 2026-09-30 DOI: 10.1002/elsa.70043
Tebogo Abigail Mashola, Thabo Matthews, Charles Muzenda, Rhiyaad Mohamed, Rudzani Sigwadi
{"title":"Dynamic Reconstruction of Metal–Organic Framework and Metal–Organic Framework-Derived Electrocatalysts for Bifunctional Oxygen Electrocatalysis in Alkaline Energy Devices","authors":"Tebogo Abigail Mashola,&nbsp;Thabo Matthews,&nbsp;Charles Muzenda,&nbsp;Rhiyaad Mohamed,&nbsp;Rudzani Sigwadi","doi":"10.1002/elsa.70043","DOIUrl":"https://doi.org/10.1002/elsa.70043","url":null,"abstract":"<p>Alkaline oxygen reduction reaction (ORR)/OER bifunctionality is central to rechargeable Zn–air batteries, reversible fuel cells and regenerative electrolysis. These technologies are promising for mitigating carbon emissions resulting from fossil fuel energy dependency, driving the energy sector towards a carbon-neutral energy cycle. Due to their excellent intrinsic activity, metal–organic frameworks (MOFs) and their derivatives have emerged as promising materials for bifunctional oxygen electrocatalysis. Despite their great activity, MOFs often transform under operating potential. The key unresolved issue is identifying the true active phase and linking precursor structure to reconstructed active sites. This review highlights the use of MOF-based electrocatalysts, their reconstruction and stability during bifunctional electrocatalysis for ORR and OER in alkaline medium. Pristine MOFs, conductive MOFs, MOF composites and MOF-derived carbons/oxides/phosphides/sulphides are critically compared. It further proposes design rules based on conductivity, metal-node chemistry, ligand-derived heteroatom doping, porosity, active-site reconstruction and device-level validation. A comprehensive summary of the progress in MOF-based and MOF-derived electrocatalysts for ORR and OER, from design to future perspectives, is presented, with possible solution strategies for future design and preparation.</p>","PeriodicalId":93746,"journal":{"name":"Electrochemical science advances","volume":"6 5","pages":""},"PeriodicalIF":4.7,"publicationDate":"2026-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/elsa.70043","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149146957","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}
引用次数: 0
Correction to “Electrochemical generation of nitric oxide for medical applications” 更正“医用一氧化氮的电化学生成”
IF 4.7
Electrochemical science advances Pub Date : 2026-09-30 DOI: 10.1002/elsa.70042
{"title":"Correction to “Electrochemical generation of nitric oxide for medical applications”","authors":"","doi":"10.1002/elsa.70042","DOIUrl":"https://doi.org/10.1002/elsa.70042","url":null,"abstract":"<p>C. J. White, N. Lehnert, M. E. Meyerhoff, <i>Electrochem Sci Adv</i>. 2022, 2, e2100156. https://doi.org/10.1002/elsa.202100156</p><p>An acknowledgement for the 3-electrode catheter configuration depicted in Figure 2A was overlooked in the original publication. The authors would like to acknowledge Dr. Andrew P. Hunt for their ideation and evaluation of the 3-electrode catheter design.</p><p>We apologize for this error.</p>","PeriodicalId":93746,"journal":{"name":"Electrochemical science advances","volume":"6 5","pages":""},"PeriodicalIF":4.7,"publicationDate":"2026-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/elsa.70042","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149146949","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}
引用次数: 0
Painless Biosensing for Non-Invasive Health Monitoring: Advances, Platforms and Future Directions 无痛生物传感用于无创健康监测:进展、平台和未来方向
IF 4.7
Electrochemical science advances Pub Date : 2026-09-01 DOI: 10.1002/elsa.70041
Ayub Alam, Faiqa Gull, Muzammal Hameed, Iqra Iqbal, Saira Naz, Hadia Noor, Ammara Aslam, Sana Younis, Valentina Vit, Muhammad Aqib Mehmood, Nicola Coppedé
{"title":"Painless Biosensing for Non-Invasive Health Monitoring: Advances, Platforms and Future Directions","authors":"Ayub Alam,&nbsp;Faiqa Gull,&nbsp;Muzammal Hameed,&nbsp;Iqra Iqbal,&nbsp;Saira Naz,&nbsp;Hadia Noor,&nbsp;Ammara Aslam,&nbsp;Sana Younis,&nbsp;Valentina Vit,&nbsp;Muhammad Aqib Mehmood,&nbsp;Nicola Coppedé","doi":"10.1002/elsa.70041","DOIUrl":"https://doi.org/10.1002/elsa.70041","url":null,"abstract":"<p>Non-invasive biosensing has expanded blood-based diagnostics into a growing set of accessible peripheral biofluids, yet most existing reviews remain confined to sweat, tears, saliva and urine, and treat the underlying literature descriptively rather than critically. Here, we present a review that extends this scope to include interstitial fluid and breath/exhaled breath condensate, two increasingly important non-invasive matrices that have been largely absent from prior synthesis, and that explicitly distinguishes sensing strategies for small-molecule metabolites from those for proteins and hormones, clarifying why the field has historically favoured the former and what emerging affinity-based approaches (aptamers, molecularly imprinted polymers) are doing to close that gap. Beyond the electrochemical and optical platforms typically covered elsewhere, we introduce electrical, non-faradaic transduction, including field-effect transistor- and impedance-based sensors, as a third major modality underpinning much of the current wearable sensor landscape. Rather than cataloguing individual devices, we critically compare reported sensitivity, selectivity and validation standards across studies within each biofluid class, highlighting where evidence is inconsistent or incomplete. Finally, we extend the discussion beyond device-level advances to the translation barriers that determine real-world deployment: the gap between laboratory demonstration and commercial product, regulatory pathways across major markets, patch-to-patch and device-to-device reproducibility and unresolved sensitivity/selectivity hurdles under real interferent conditions. Together, these additions position this review as a broader and more critically grounded synthesis of the painless biosensing landscape than currently available in the literature.</p>","PeriodicalId":93746,"journal":{"name":"Electrochemical science advances","volume":"6 5","pages":""},"PeriodicalIF":4.7,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/elsa.70041","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148942171","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}
引用次数: 0
Polyaniline Derivatives Decorated With Atomic-Scale Gold Toward Electrochemical Non-Enzymatic Glucose Sensing 原子尺度金修饰聚苯胺衍生物在电化学非酶葡萄糖传感中的应用
IF 4.7
Electrochemical science advances Pub Date : 2026-08-13 DOI: 10.1002/elsa.70040
Keisuke Okamoto, Tomoyuki Kurioka, Chi-Hua Yu, Yung-Jung Hsu, Tso-Fu Mark Chang, Masato Sone
{"title":"Polyaniline Derivatives Decorated With Atomic-Scale Gold Toward Electrochemical Non-Enzymatic Glucose Sensing","authors":"Keisuke Okamoto,&nbsp;Tomoyuki Kurioka,&nbsp;Chi-Hua Yu,&nbsp;Yung-Jung Hsu,&nbsp;Tso-Fu Mark Chang,&nbsp;Masato Sone","doi":"10.1002/elsa.70040","DOIUrl":"https://doi.org/10.1002/elsa.70040","url":null,"abstract":"<p>This paper reports polyaniline derivatives, such as polyaniline, poly(<i>o</i>-toluidine) and poly(<i>o</i>-methoxyaniline), decorated with atomic-scale gold clusters for electrochemical non-enzymatic glucose sensing. Atomic-scale gold clusters are deposited onto the electrodeposited polyaniline derivatives via cyclic electrodeposition. Their catalytic activity for glucose oxidation is evaluated by cyclic voltammetry measurements. The introduced functional groups affect their catalytic performance. All fabricated atomic-scale gold cluster-decorated polyaniline derivatives demonstrate a wide detection range, low detection limit, high tolerance to chloride ion poisoning and good operational stability. Among the prepared electrodes, using poly(<i>o</i>-methoxyaniline) as a supporting material results in the highest catalytic activity toward glucose oxidation with better selectivity. Au<sub>2</sub>/POMA electrode shows a sensitivity of 200.9 µA mM<sup>−1</sup> cm<sup>−2</sup>, and a limit of detection of 0.30 mM, as well as the best selectivity and stability. These results demonstrate that the introduction of functional groups onto the polyaniline main chains enhances electrode properties using atomic-scale gold clusters toward non-enzymatic glucose sensing applications.</p>","PeriodicalId":93746,"journal":{"name":"Electrochemical science advances","volume":"6 5","pages":""},"PeriodicalIF":4.7,"publicationDate":"2026-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/elsa.70040","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148719253","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}
引用次数: 0
Nanomaterial-Based CRISPR/Cas-Powered Electrochemical Sensing Integrated With Microfluidics for Rapid and Sensitive Diagnostics 基于纳米材料的CRISPR/ cas驱动的电化学传感与微流体集成,用于快速灵敏的诊断
IF 4.7
Electrochemical science advances Pub Date : 2026-08-13 DOI: 10.1002/elsa.70037
Minju Ahn, Sang Baek Sim, Izzati Haizan, Jin-Ha Choi, Jeong-Woo Choi
{"title":"Nanomaterial-Based CRISPR/Cas-Powered Electrochemical Sensing Integrated With Microfluidics for Rapid and Sensitive Diagnostics","authors":"Minju Ahn,&nbsp;Sang Baek Sim,&nbsp;Izzati Haizan,&nbsp;Jin-Ha Choi,&nbsp;Jeong-Woo Choi","doi":"10.1002/elsa.70037","DOIUrl":"https://doi.org/10.1002/elsa.70037","url":null,"abstract":"<p>Rapid and sensitive detection of disease-related biomarkers is critical for early diagnosis and appropriate treatment. However, conventional analytical methods are often time-consuming and require complex procedures and skilled personnel. Electrochemical biosensors have therefore attracted considerable attention because they offer high sensitivity, rapid response, low cost and strong potential for point-of-care diagnostics. Recent efforts have focused on enhancing analytical performance through electrode interface engineering and signal amplification strategies. In particular, nanomaterials are widely employed to improve interfacial signal transduction and increase the loading density of biorecognition elements. In addition, CRISPR/Cas systems provide highly specific target recognition and inherent signal amplification, enabling the sensitive detection of diverse analytes. More recently, microfluidic technologies have emerged as key components in electrochemical biosensing platforms, enabling precise manipulation of small sample volumes, reduced reagent consumption, accelerated reaction kinetics and automated sample-to-answer analysis. They also facilitate multiplexed detection and support the development of compact, portable diagnostic devices. Furthermore, microfluidic platforms enable the integration of multiple analytical steps, including sample preparation, target recognition and signal readout, within a single miniaturised system, thereby improving analytical efficiency while minimising user intervention and operational errors. These advantages make microfluidic-integrated electrochemical biosensors promising candidates for next-generation portable diagnostic technologies. In this review, we summarise the fundamental principles of electrochemical biosensors and highlight recent advances in nanomaterial-based interface design, CRISPR-assisted electrochemical sensing and microfluidic-integrated platforms for practical diagnostic applications.</p>","PeriodicalId":93746,"journal":{"name":"Electrochemical science advances","volume":"6 4","pages":""},"PeriodicalIF":4.7,"publicationDate":"2026-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/elsa.70037","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148753417","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}
引用次数: 0
Electrical Vehicles Powered by Batteries and Fuel Cells – Brief Illustrated History 由电池和燃料电池驱动的电动汽车——简史图解
IF 4.7
Electrochemical science advances Pub Date : 2026-08-06 DOI: 10.1002/elsa.70039
Evgeny Katz
{"title":"Electrical Vehicles Powered by Batteries and Fuel Cells – Brief Illustrated History","authors":"Evgeny Katz","doi":"10.1002/elsa.70039","DOIUrl":"https://doi.org/10.1002/elsa.70039","url":null,"abstract":"&lt;p&gt;First electrical vehicles (cars, motorcycles, trains, and boats) powered by batteries and fuel cells were developed from the mid-19th to mid-20th centuries. While the first electrical vehicles were mostly experimental examples, some of them were efficient enough to allow their commercial application. The present short review, richly illustrated with old historic photos, shows the origin of modern electrical cars in the historic perspective. This review is mostly addressed to undergraduate students studying electrochemistry and electrical engineering and interested in the origin of electrical vehicles presently based on modern technology but grown from technology more than 100 years old. The present brief review addresses the contributions of scientists and engineers to the development of electric vehicles, then connecting the created devices to the specific names.&lt;/p&gt;&lt;p&gt;The batteries and fuel cells, the sources of electricity in the electrical vehicles exemplified below, are shown schematically in Figure 1. While there are many specific differences in the example vehicles, the major difference in the batteries and fuel cells is in the organisation of electrical processes. In a battery, the reducer and oxidiser are packed together and can be consumed irreversibly or recharged in a reversed electrochemical process. On the other hand, in a fuel cell, the reducer and oxidiser are pumped through the flow device, then react with the catalytic electrodes. In both cases, the electrochemical processes provide the voltage and current needed for the power to drive the electric vehicles. The present review is not aimed at the discussion of the electrochemical processes in batteries and fuel cells, but it concentrates on the historical examples of the electrically driven vehicles.&lt;/p&gt;&lt;p&gt;&lt;b&gt;Moritz Hermann von Jacobi&lt;/b&gt; (1801–1874) (Boris Semyonovich Jacobi according to the Russian style) (Figure 2) was a Prussian-born (with Jewish background) scientist who worked mostly in Russia. Jacobi is known for his invention of galvanoplasty (electrotyping) and for his work on electric motors and electrical vehicles [&lt;span&gt;1, 2&lt;/span&gt;].&lt;/p&gt;&lt;p&gt;The boat carried 14 passengers on the Neva River in Saint Petersburg, travelling at 3 miles/h (ca. 4.8 km/h) against the stream. The boat was successfully demonstrated to Russian Czar Nicholas I.&lt;/p&gt;&lt;p&gt;&lt;b&gt;Charles Grafton Page&lt;/b&gt; (1812–1868) (Figure 4) was an American electrical experimenter and inventor, particularly known for his research in electromagnetism and for making various electric devices and instruments [&lt;span&gt;4&lt;/span&gt;]. Self-acting circuit breakers (interrupters) and one of the earliest electric motors were among his many inventions. He prototyped an electric train much earlier than it could be practically used.&lt;/p&gt;&lt;p&gt;In 1850, the 21,000-pound (ca. 9,500 kilogram) railroad car with Page, an engineer, Ari Davis and several passengers on board performed a road test. The arch-roofed cab was 15 ft (4.6 m) long, sufficie","PeriodicalId":93746,"journal":{"name":"Electrochemical science advances","volume":"6 4","pages":""},"PeriodicalIF":4.7,"publicationDate":"2026-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/elsa.70039","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148752948","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}
引用次数: 0
Machine Learning-assisted Interpretation of Scan-Rate-dependent Glucose Sensing on Nickel Cobalt Oxide/Porous Carbon Modified Screen-printed Electrodes 镍钴氧化物/多孔碳修饰丝网印刷电极上扫描速率依赖的葡萄糖传感的机器学习辅助解释
IF 4.7
Electrochemical science advances Pub Date : 2026-08-04 DOI: 10.1002/elsa.70038
Shahin Faruk, Udhaya Ganesh Pitchai Kaveri, Manoj T., Krishnamoorthi Makkithaya, Harishkumar Madhyastha, Sundaram Gunasekaran, Mysore Sridhar Santosh, Aarti Sripathi Bhatt, Bistuvalli Chandrashekarappa Revanasidappa
{"title":"Machine Learning-assisted Interpretation of Scan-Rate-dependent Glucose Sensing on Nickel Cobalt Oxide/Porous Carbon Modified Screen-printed Electrodes","authors":"Shahin Faruk,&nbsp;Udhaya Ganesh Pitchai Kaveri,&nbsp;Manoj T.,&nbsp;Krishnamoorthi Makkithaya,&nbsp;Harishkumar Madhyastha,&nbsp;Sundaram Gunasekaran,&nbsp;Mysore Sridhar Santosh,&nbsp;Aarti Sripathi Bhatt,&nbsp;Bistuvalli Chandrashekarappa Revanasidappa","doi":"10.1002/elsa.70038","DOIUrl":"https://doi.org/10.1002/elsa.70038","url":null,"abstract":"<p>Artificial intelligence (AI) is being increasingly applied in diabetes care, particularly in glucose monitoring and management. However, the reliability of AI-driven glucose sensing is often limited by sensor inaccuracy due to the plethora of electrocatalytic materials available. In this regard, the present work explores the glucose-sensing capability of nickel cobalt oxide/porous carbon hybrid electrode by integrating experimentally acquired cyclic voltammetry (CV) data with machine learning (ML). Key electrochemical descriptors, such as oxidation current, oxidation potential and the area under the oxidation curve, served as inputs for the predictive models, which were evaluated through a blind concentration interpolation strategy. The results reveal that predictive accuracy is governed not by algorithmic complexity, but rather by the scan rate and its associated electrochemical behaviour. Simple models such as linear regression and ridge regression exhibited strong agreement with the underlying electrochemical dynamics, highlighting the feasibility of combining regression-based ML with electrochemical sensing. Rather than treating AI as a black box, this integrated approach offers a transparent and structured way to interpret CV data, uncover stable predictive relationships, and advance the reliability of glucose detection systems.</p>","PeriodicalId":93746,"journal":{"name":"Electrochemical science advances","volume":"6 4","pages":""},"PeriodicalIF":4.7,"publicationDate":"2026-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/elsa.70038","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148752418","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}
引用次数: 0
Electrochemical Chlorination of Levulinic Acid 乙酰丙酸的电化学氯化反应
IF 4.7
Electrochemical science advances Pub Date : 2026-07-31 DOI: 10.1002/elsa.70036
Ananda S. Amarasekara, M. A. G. K. Manchanayake
{"title":"Electrochemical Chlorination of Levulinic Acid","authors":"Ananda S. Amarasekara,&nbsp;M. A. G. K. Manchanayake","doi":"10.1002/elsa.70036","DOIUrl":"https://doi.org/10.1002/elsa.70036","url":null,"abstract":"<p>Levulinic acid is a cellulose-derived, sustainable feedstock with significant potential for use in renewable, carbon-based polymer and chemical synthesis. In this work, electrochemical chlorination has been investigated as a method for preparing chlorinated levulinic acid derivatives, which can serve as valuable intermediates for the synthesis of other compounds and polymers. Electrochemical chlorination was studied using carbon or platinum cathodes, carbon anodes in undivided and divided cells, under a variety of conditions including electrolysis of levulinic acid in HCl, NaCl with acidic, basic and neutral conditions. The experiment using a divided cell with platinum cathode, graphite anode, ceramic porous cup membrane and using levulinic acid in 11 M HCl in anode, 11 M HCl in cathode compartments, and 0.10 A cm<sup>−1</sup> current density produced the highest levulinic acid conversion of 94% producing a mixture of 3-chloro-, 5-chloro-, 3,3-dichloro 3,5-dichloro- and 5,5-dichloro-levulinic acid in 58:19:9:8:6 mole ratio in 70% coulombic efficiency. The more rapid formation of 3-chloro relative to 5-chloro-levulinic acid suggests that electrophilic chlorination proceeds via an ionic mechanism involving enol or enolate intermediates. Monitoring the reaction over six hours showed gradual dichlorination of the initially formed monochlorinated products.</p>","PeriodicalId":93746,"journal":{"name":"Electrochemical science advances","volume":"6 4","pages":""},"PeriodicalIF":4.7,"publicationDate":"2026-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/elsa.70036","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148647848","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}
引用次数: 0
Comparative Study of Oxygen Vacancy Engineering in NiMn Electrocatalysts via H2O2 and NaBH4 Treatments for Paired 5-Hydroxymethylfurfural Oxidation and Hydrogen Production H2O2和NaBH4处理下NiMn电催化剂氧空位工程对5-羟甲基糠醛氧化制氢的比较研究
IF 4.7
Electrochemical science advances Pub Date : 2026-07-19 DOI: 10.1002/elsa.70035
Nadia Mumtazah, Muhammad Fahmi Hakim, Nurfadlih Syahlani,  Slamet, Mohammad Nasikin, Haslinda Zabiri, Muhammad Ibadurrohman
{"title":"Comparative Study of Oxygen Vacancy Engineering in NiMn Electrocatalysts via H2O2 and NaBH4 Treatments for Paired 5-Hydroxymethylfurfural Oxidation and Hydrogen Production","authors":"Nadia Mumtazah,&nbsp;Muhammad Fahmi Hakim,&nbsp;Nurfadlih Syahlani,&nbsp; Slamet,&nbsp;Mohammad Nasikin,&nbsp;Haslinda Zabiri,&nbsp;Muhammad Ibadurrohman","doi":"10.1002/elsa.70035","DOIUrl":"https://doi.org/10.1002/elsa.70035","url":null,"abstract":"<p>Hydrogen is widely recognized as a carbon-free energy carrier, yet its large-scale production still faces sustainability challenges due to the high energy demand of conventional water electrolysis. The sluggish kinetics and high potential requirement of the oxygen evolution reaction significantly limit overall efficiency. Coupling hydrogen evolution with the electrooxidation of biomass-derived molecules, such as the conversion of 5-hydroxymethylfurfural to value-added 2,5-diformylfuran, offers a promising strategy to reduce energy consumption while generating useful chemicals. However, achieving high DFF yield and selectivity remains challenging due to slow reaction kinetics and limited active sites. In this work, a NiMn-based electrocatalyst was engineered via two treatments using H<sub>2</sub>O<sub>2</sub> (NiMn-H) and NaBH<sub>4</sub> (NiMn-N) to introduce oxygen vacancies and modulate the electronic structure. Although both reagents serve the same purpose of generating oxygen vacancies, the mechanisms through which they facilitate this are expected to be different. Quantitative analysis showed that the oxygen vacancy concentration increased from 49.97% in untreated NiMn to 56.11% and 63.39% in NiMn-H and NiMn-N, respectively. Consequently, the DFF yield increased to 17.4% and 21.2% after 6 h of reaction for NiMn-H and NiMn-N, respectively, compared to 7.2% for the untreated catalyst, while maintaining a selectivity of approximately 90%. The enhanced anodic HMF oxidation further promoted hydrogen evolution, leading to an increase in hydrogen production from 28.64 µmole cm<sup>−2</sup> h<sup>−1</sup> for NiMn to 67.81 µmole cm<sup>−2</sup> h<sup>−1</sup> for NiMn-H and 78.57 µmole cm<sup>−2</sup> h<sup>−1</sup> for NiMn-N. These results demonstrate that oxygen-vacancy engineering effectively enhances HMF oxidation and hydrogen evolution, offering a viable pathway toward energy-efficient hydrogen production.</p>","PeriodicalId":93746,"journal":{"name":"Electrochemical science advances","volume":"6 4","pages":""},"PeriodicalIF":4.7,"publicationDate":"2026-07-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/elsa.70035","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148615239","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}
引用次数: 0
Elastic Nickel Porous Transport Layers for Enhanced Catalyst Layer Utilization of Anion Exchange Membrane Water Electrolysis 弹性镍多孔输运层对阴离子交换膜电解中催化剂层的强化利用
IF 4.7
Electrochemical science advances Pub Date : 2026-07-06 DOI: 10.1002/elsa.70034
Jagoda J. Manss-Chmielarz, Lena O. Lahner, Tobias Morawietz, Aldo S. Gago, K. Andreas Friedrich
{"title":"Elastic Nickel Porous Transport Layers for Enhanced Catalyst Layer Utilization of Anion Exchange Membrane Water Electrolysis","authors":"Jagoda J. Manss-Chmielarz,&nbsp;Lena O. Lahner,&nbsp;Tobias Morawietz,&nbsp;Aldo S. Gago,&nbsp;K. Andreas Friedrich","doi":"10.1002/elsa.70034","DOIUrl":"https://doi.org/10.1002/elsa.70034","url":null,"abstract":"<p>The global transition to sustainable energy and rising hydrogen demand have intensified interest in anion exchange membrane water electrolysis. This technology offers a cost-effective route to green hydrogen; however, large-scale deployment remains limited by component costs and variable performance, often linked to suboptimal compression and flow field design. While much research targets catalysts and membranes, this study focuses on structural components, highlighting the role of simplified cell design and pressure distribution. This study introduces a novel, elastic, stacked porous transport layer concept based on low-cost nickel knitted wire mesh, designed to enhance electrochemical performance while simplifying cell assembly. Single-cell tests (4 cm<sup>2</sup>, 60°C, 1 M KOH) show that the elastic component (75% porosity, 1.65 mm relaxed thickness) achieves 3.25 A cm<sup>−2</sup> at 2 V, compared with 2.8 A cm<sup>−2</sup> for a rigid expanded mesh using identical dual-layer nickel felt substrate. Across the tested substrates, the elastic design delivered up to a 25% higher current density, attributed to homogeneous compression, enhanced catalyst–membrane contact and improved water/gas transport, while eliminating the need for machined flow fields. A 1000-h durability study further validates the concept. These results demonstrate the potential of elastic components to enhance AEMWE performance and reduce cost, advancing efficient electrolysis stack designs.</p>","PeriodicalId":93746,"journal":{"name":"Electrochemical science advances","volume":"6 4","pages":""},"PeriodicalIF":4.7,"publicationDate":"2026-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/elsa.70034","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148462762","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}
引用次数: 0
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