Electrochimica Acta最新文献_第5页

Harvesting the challenges of plasmon-enhanced electrochemistry: Perspectives on an intricated research field 收获等离子体增强电化学的挑战：一个复杂研究领域的观点

IF 5.6 3区材料科学

Electrochimica Acta Pub Date : 2026-05-01 Epub Date: 2026-02-19 DOI: 10.1016/j.electacta.2026.148500

Jéssica Alves Nogueira, Susana Inés Córdoba de Torresi

引用次数: 0

Enhancement on pseudocapacitance of NiFe2O4 nanoparticles aligned by magnetic field 磁场对NiFe2O4纳米粒子赝电容的增强作用

IF 5.6 3区材料科学

Electrochimica Acta Pub Date : 2026-04-20 Epub Date: 2026-01-22 DOI: 10.1016/j.electacta.2026.148298

Yan Ma , Hugang Cui , Wenjiao Li , Wei Bai , Kai Feng , Lingfang Xu , Changping Yang

{"title":"Enhancement on pseudocapacitance of NiFe2O4 nanoparticles aligned by magnetic field","authors":"Yan Ma , Hugang Cui , Wenjiao Li , Wei Bai , Kai Feng , Lingfang Xu , Changping Yang","doi":"10.1016/j.electacta.2026.148298","DOIUrl":"10.1016/j.electacta.2026.148298","url":null,"abstract":"<div><div>The influence on the pseudocapacitance performance of nickel ferrate (NiFe₂O₄) using magnetic field orientation approach was investigated in this work. NiFe₂O₄ were synthesized by hydrothermal method, and the electrode materials with parallel (Para) and perpendicular (Perp) directions were obtained by aligning NiFe<sub>2</sub>O<sub>4</sub> particles in an external magnetic field of 3000 Gs. The results demonstrate that magnetic field treatment significantly optimizes the microstructure of NiFe₂O₄. The vertically oriented sample exhibited the best performance, showing a 21.2% increase in the CV peak current and a specific capacitance of 325.64 F/g at 1 A/g-a 25.7% improvement over the non-oriented sample. Structural characterization revealed that the vertically oriented sample exhibited preferential alignment along (400) and (440) crystal planes, leading to optimized microstructure and charge transport pathways. Electrochemical impedance analysis revealed that the vertically oriented sample possessed the lowest charge transfer resistance (R<sub>ct</sub>) of 0.033 Ω and the highest ion diffusion coefficient of 6.77 × 10⁻⁸ cm²/s, implying that the ordered arrangement of particles induced by the external magnetic field effectively promotes the carrier transport kinetics. Furthermore, the vertically oriented sample maintained 51.57% capacitance retention after 5000 cycles, representing a remarkable improvement of 14% compared to the non-oriented sample (37.5%). Our work demonstrates that the pseudocapacitive performance of NiFe₂O₄ can be considerably enhanced by magnetic field, and provide a new idea for making electrodes with a high performance.</div></div>","PeriodicalId":305,"journal":{"name":"Electrochimica Acta","volume":"556 ","pages":"Article 148298"},"PeriodicalIF":5.6,"publicationDate":"2026-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146033714","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Amino-functionalized MWCNTs Integrated with Cu-BDC MOF for enhanced electrochemical sensing of caffeic acid in food samples 氨基功能化MWCNTs与Cu-BDC MOF集成增强食品样品中咖啡酸的电化学传感

IF 5.6 3区材料科学

Electrochimica Acta Pub Date : 2026-04-20 Epub Date: 2026-02-05 DOI: 10.1016/j.electacta.2026.148382

Jeeva Prasath , Arunkumar Selvam , Chih Yu Kuo , Mani Govindasamy , Ramasamy Jayavel , Mohamed A. Habila , Mukannan Arivanandhan

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The research on the improvement of low-activity lithium residue base on the analysis and prediction under a theoretical mechanism of electrical double layer 在双电层理论机理分析与预测的基础上，对低活性锂渣进行了改进研究

IF 5.6 3区材料科学

Electrochimica Acta Pub Date : 2026-04-20 Epub Date: 2026-02-09 DOI: 10.1016/j.electacta.2026.148421

Jiaming Zou , Jianyu Yang , Weijun Yang

{"title":"The research on the improvement of low-activity lithium residue base on the analysis and prediction under a theoretical mechanism of electrical double layer","authors":"Jiaming Zou , Jianyu Yang , Weijun Yang","doi":"10.1016/j.electacta.2026.148421","DOIUrl":"10.1016/j.electacta.2026.148421","url":null,"abstract":"<div><div>In order to solve the practical problems about the solid waste treatment, the low-activity lithium residue from Jiangxi(China) were be selected and studied. Some theoretical mechanisms and experimental methods were adopted to explore an effective way to improve the utilization of solid waste. In detail, a electrical double layer characterization model adapted to low-activity lithium residue was studied by analyzing the hypothesis method based on the electrical double layer model mechanism. Meanwhile, methods to reduce the thickness of the electrical double layer and modes to improve the inter-molecular attractive coalescence were be discussed. Further, the activity index test was used to explore the validity of the excitation method, and the change of basic properties of modified materials after stabilization was studied by the unconfined compressive strength test and comparative analysis. The research results shows that: 1) The composite ion excitation method for low activity lithium residue could effectively change the potential activity of silicon-aluminum phase material, and diffusion electrical double layer thickness of the particles in the system. 2) The modified stable material has obvious coalescent promotion effect compared with the original lithium residue, and the activity index of the treated lithium residue has a clear increase compared with the original lithium residue. The activity of the treated lithium residue increased by 27.8%. 3) The compressive strength of the seven and twenty-eight days were significantly improved compared with the contrast sample, and the microscopic analysis pattern further showed that the stabilization effect of this excitation method was obvious.</div></div>","PeriodicalId":305,"journal":{"name":"Electrochimica Acta","volume":"556 ","pages":"Article 148421"},"PeriodicalIF":5.6,"publicationDate":"2026-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146146615","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A new video-rate scanning tunnelling microscope for measurements at electrochemical interfaces 一种用于电化学界面测量的新型视频速率扫描隧道显微镜

IF 5.6 3区材料科学

Electrochimica Acta Pub Date : 2026-04-20 Epub Date: 2026-02-11 DOI: 10.1016/j.electacta.2026.148413

Fabian Schröfel, Knud Schröter, Matthias Greve, Olaf M. Magnussen

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Spinel high-entropy oxides as powerful electrocatalysts for degradation of recalcitrant organic pollutant 尖晶石高熵氧化物作为降解难降解有机污染物的强力电催化剂

IF 5.6 3区材料科学

Electrochimica Acta Pub Date : 2026-04-20 Epub Date: 2026-02-09 DOI: 10.1016/j.electacta.2026.148425

Nuria Bernárdez-Rodas, Xan Barreiro-Xardon, Marta Pazos, Emilio Rosales, M. Ángeles Sanromán

{"title":"Spinel high-entropy oxides as powerful electrocatalysts for degradation of recalcitrant organic pollutant","authors":"Nuria Bernárdez-Rodas, Xan Barreiro-Xardon, Marta Pazos, Emilio Rosales, M. Ángeles Sanromán","doi":"10.1016/j.electacta.2026.148425","DOIUrl":"10.1016/j.electacta.2026.148425","url":null,"abstract":"<div><div>In this work a high entropy spinel oxide xerogel (X_HEO), (MnCoFeNi)₃O₄, was synthesized and proposed as a feasible heterogeneous catalyst for electrochemical degradation process. The physicochemical analysis allowed the identification of a structure belonging to the Fd-3 m group and crystalline phases of Fe, Co, Ni, and Mn were detected. A high catalytic activity based on its electrochemical properties was also observed, with an η<sub>10</sub> of 307 mV, a Tafel slope of 35.12 mV/dec, and enhanced charge transfer kinetics. The performance of X_HEO as a heterogeneous catalyst was evaluated in the electrooxidation of Rhodamine B and the treatment conditions optimized. The reaction kinetics in the presence of X_HEO increased 2.9 times compared to a process in its absence, attaining 96.67 % removal in 30 min at a current density of 1.6 mA/cm². The reaction mechanism was found to follow a non-radical pathway, dominated by the electrochemical activation of high-valence oxo-metal specie, as supported by XPS analysis and scavenger experiments. Likewise, TOC analysis revealed a mineralization of 91.51 % in 240 min, and the eco toxicity of the final sample was reduced by a factor of 26 times compared to the initial value. X_HEO also showed high electrocatalytic degradation capabilities for pesticides. In particular, total degradation of pymetrozine was reached in just 15 min, with a 45.73 % reduction in TOC by the end of the treatment and the detection of short-chain carboxylic acids confirmed the mineralization process. X_HEO proved to have great potential as a heterogeneous catalyst in electrooxidation treatment and also as sustainable and energy-efficient alternative for the removal of recalcitrant pollutants.</div></div>","PeriodicalId":305,"journal":{"name":"Electrochimica Acta","volume":"556 ","pages":"Article 148425"},"PeriodicalIF":5.6,"publicationDate":"2026-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146146612","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Homogeneous Co2MoS4 on carbon nanotube macrofilms as a bifunctional freestanding electrode for overall water splitting 碳纳米管宏观膜上均相Co2MoS4作为双功能独立电极的整体水分解

IF 5.6 3区材料科学

Electrochimica Acta Pub Date : 2026-04-20 Epub Date: 2026-02-10 DOI: 10.1016/j.electacta.2026.148442

Yi Liu , Qinqi Zhan , Peng Deng , Yanhong Yin

{"title":"Homogeneous Co2MoS4 on carbon nanotube macrofilms as a bifunctional freestanding electrode for overall water splitting","authors":"Yi Liu , Qinqi Zhan , Peng Deng , Yanhong Yin","doi":"10.1016/j.electacta.2026.148442","DOIUrl":"10.1016/j.electacta.2026.148442","url":null,"abstract":"<div><div>Ternary transition metal sulfides, particularly Co-Mo-S systems, are promising bifunctional electrocatalysts due to their tunable electronic structures and synergistic effects between metal atoms. Herein, we successfully fabricated a freestanding hybrid electrode through a facile hydrothermal method. The Co<sub>2</sub>MoS<sub>4</sub>/CMF electrode, constructed by decorating carbon nanotube networks with uniformly dispersed nanoparticles, exhibits bifunctional activity for water splitting. It requires low overpotentials of 87 mV and 200 mV to achieve 10 mA cm⁻<sup>2</sup> for the HER and OER, respectively, as its architecture integrates numerous active sites with efficient charge/mass transfer pathways. When assembled as a symmetric electrolyzer, the system requires only 1.46 V to achieve 10 mA cm⁻<sup>2</sup>, which is lower than that required by the noble-metal-based RuO<sub>2</sub>/CP||Pt/C/CP couple. The enhanced activity originates from the intrinsic metallic conductivity of Co<sub>2</sub>MoS<sub>4</sub> and the electronic synergy between Co and Mo atoms, which upshifts the <span>d</span>-band center, thereby optimizing the adsorption free energy of reaction intermediates and lowering the energy barriers for both HER and OER. This work not only provides an efficient noble-metal-free electrocatalyst but also offers fundamental insights into the rational design of advanced energy conversion materials.</div></div>","PeriodicalId":305,"journal":{"name":"Electrochimica Acta","volume":"556 ","pages":"Article 148442"},"PeriodicalIF":5.6,"publicationDate":"2026-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146153141","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Alleviating aluminum corrosion by intensifying lithium nitrate reserves in carbonate electrolytes for high-voltage lithium metal batteries 高压锂金属电池碳酸盐电解液中硝酸锂储量的研究

IF 5.6 3区材料科学

Electrochimica Acta Pub Date : 2026-04-20 Epub Date: 2026-02-07 DOI: 10.1016/j.electacta.2026.148412

Xiao-Zhong Fan , Xiao-He Zhou , Jin-Hao Zhang , Jin-Xiu Chen , Xiong Xiao , Xiao-Dong Chen , Lin Zhu , Ying-Ze Song , Yu-Zhen Zhao , Long Kong

{"title":"Alleviating aluminum corrosion by intensifying lithium nitrate reserves in carbonate electrolytes for high-voltage lithium metal batteries","authors":"Xiao-Zhong Fan , Xiao-He Zhou , Jin-Hao Zhang , Jin-Xiu Chen , Xiong Xiao , Xiao-Dong Chen , Lin Zhu , Ying-Ze Song , Yu-Zhen Zhao , Long Kong","doi":"10.1016/j.electacta.2026.148412","DOIUrl":"10.1016/j.electacta.2026.148412","url":null,"abstract":"<div><div>The pursuit of high energy density batteries necessitates operation at high upper voltages, but exacerbates aluminum (Al) current collector corrosion. Lithium (Li) salts with strong coordination anions in electrolytes could suppress Al corrosion by penetrating the solvation shell of Al<sup>3+</sup> and facilitate the Al–anion precipitates due to strong ion–ion interactions. However, such Li salts with strong anion coordination ability encounter starved solubility in carbonate electrolytes. Herein, a sustainable-release of nitrates (NO<sub>3</sub><sup>−</sup>) from a flexible film with an ultrahigh LiNO<sub>3</sub> reserves is introduced to circumvent the above dilemma. The fabricated films deliver an extraordinary LiNO<sub>3</sub> reserve with an approximately 3.5 folds compared to conventional methods. Therefore, the strong coordination ligands dominate the first solvation shell and prompts the formation of precipitates, which significantly suppress Al corrosion and remarkably demonstrate stable cell operation even at the upper voltage of 4.4 V. Consequently, cell with a high cathode areal capacity (5.0 mAh cm<sup>−2</sup>, corresponding to 25.0 mg cm<sup>−2</sup>) achieves over 60 cycles at room temperature and 80 cycles at −20 °C. This sustained-release methodology successfully overcomes the inherent solubility constraints of traditional undissolved electrolyte additives, offering a viable pathway for enabling high-voltage lithium-metal batteries with broader electrolyte selections.</div></div>","PeriodicalId":305,"journal":{"name":"Electrochimica Acta","volume":"556 ","pages":"Article 148412"},"PeriodicalIF":5.6,"publicationDate":"2026-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146135581","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Integrating AESEC with the Respirometric method: A New Approach to Unraveling OER and Dissolution Phenomena 将AESEC与呼吸法相结合：一种揭示OER和溶解现象的新方法

IF 5.6 3区材料科学

Electrochimica Acta Pub Date : 2026-04-20 Epub Date: 2026-01-26 DOI: 10.1016/j.electacta.2026.148319

Chenyang Xie , Jinyi Yuan , Karthikeyan Hariharan , Sannakaisa Virtanen , Junsoo Han , Kevin Ogle

引用次数: 0

Efficient and facile electrochemical synthesis of sodium perborate using boron-doped diamond anode 掺硼金刚石阳极高效、简便的电化学合成过硼酸钠

IF 5.6 3区材料科学

Electrochimica Acta Pub Date : 2026-04-20 Epub Date: 2026-02-09 DOI: 10.1016/j.electacta.2026.148424

Ziqi Teng , Finn Moeller , Siegfried R. Waldvogel

{"title":"Efficient and facile electrochemical synthesis of sodium perborate using boron-doped diamond anode","authors":"Ziqi Teng , Finn Moeller , Siegfried R. Waldvogel","doi":"10.1016/j.electacta.2026.148424","DOIUrl":"10.1016/j.electacta.2026.148424","url":null,"abstract":"<div><div>Electrochemical oxidation offers a sustainable alternative to conventional oxidant production. Yet, the electrosynthesis of sodium perborate (SPB) has remained difficult due to its narrow stability window in aqueous solution and competition of oxygen evolution reaction under high potential. Although boron-doped diamond (BDD) electrodes are well known for enabling high-potential anodic reactions, their applicability to perborate synthesis has previously been questioned. Here, we demonstrate a robust, reproducible, and practical one-step electrochemical route to sodium perborate monohydrate (SPB-1) that directly yields a stable crystalline product using a BDD anode in concentrated carbonate/bicarbonate electrolytes. Systematic variation of operating parameters reveals that low temperature (3.5 °C), moderate-to-high current density (0.825–0.875 A cm⁻²), controlled amount of the applied charge (24–26 <em>F</em>), and sufficient post-electrolysis mixing (>20 min) are essential for efficient perborate formation. Under optimized conditions, the process achieves an isolated yield of 79 ± 3%, an active oxygen content of 14.0 ± 0.6%, and a current efficiency of 26 ± 1% across five independent runs, demonstrating excellent reproducibility and product quality comparable to commercial SPB-1. Cyclic voltammetry and galvanostatic anode potential measurements reveal that carbonate oxidation on BDD occurs at highly positive potentials overlapping with the oxygen evolution region, rationalizing the narrow optimal current density window and the superior performance of BDD relative to platinum anodes. FTIR analysis confirms the formation of SPB-1, with all characteristic vibrational features matching those of authentic material. Overall, this work establishes a reliable electrochemical strategy for SPB-1 synthesis, supported by mechanistic insight and quantitative benchmarking, and highlights the potential of BDD-based electrolysis for sustainable and scalable oxidant production.</div></div>","PeriodicalId":305,"journal":{"name":"Electrochimica Acta","volume":"556 ","pages":"Article 148424"},"PeriodicalIF":5.6,"publicationDate":"2026-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146146613","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0