Electrochemistry Communications最新文献

{"title":"A review article on: Voltammetric detection of lead, mercury, chromium, and arsenic metal ions from environmental samples","authors":"Andualem Ejigu ,&nbsp;Molla Tefera ,&nbsp;Atnafu Guadie","doi":"10.1016/j.elecom.2025.107996","DOIUrl":"10.1016/j.elecom.2025.107996","url":null,"abstract":"<div><div>Detecting hazardous heavy metals like lead, cadmium, mercury, and arsenic is a significant global issue because of their high toxicity and environmental durability. While traditional laboratory methods provide accurate results, their high cost, complexity, and slow processing times restrict their practicality for widespread, on-site monitoring. In this regard, electrochemical techniques, especially voltammetry, have become a strong alternative, delivering a great mix of high sensitivity, portability, and affordability.</div><div>This review highlights recent advancements in innovative electrode materials, such as graphene-modified electrodes and sensors enhanced with metal nanoparticles, along with advanced stripping techniques like anodic stripping voltammetry (ASV) and square wave voltammetry (SWV). Thanks to these advancements, detection limits have improved significantly, often reaching the parts per billion (ppb) range, while the selectivity for specific metal ions has also been enhanced.</div><div>Additionally, the review critically examines methods for analyzing water, soil, and sediment samples, showcasing the promising capabilities of nanocomposite materials that greatly increase sensitivity and stability. It also emphasizes the importance of standardized protocols for reliable comparisons and discusses future research directions, including the development of new nanocomposite materials and the integration of these advanced ‘nanosensors’ into portable devices for real-time environmental monitoring.</div></div>","PeriodicalId":304,"journal":{"name":"Electrochemistry Communications","volume":"178 ","pages":"Article 107996"},"PeriodicalIF":4.7,"publicationDate":"2025-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144653704","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"MOF-clad FeTiO3: Synergistic suppression of material decomposition and capacity fading in lithium-ion battery anodes","authors":"Zhipeng Yuan,&nbsp;Xiaohuan Wang,&nbsp;Congjie Yang,&nbsp;Xinba Yaer","doi":"10.1016/j.elecom.2025.107998","DOIUrl":"10.1016/j.elecom.2025.107998","url":null,"abstract":"<div><div>Titanium iron oxide (FeTiO₃) has emerged as a promising anode material for lithium-ion batteries due to its distinctive octahedral structure, natural abundance, and high theoretical specific capacity. However, practical implementation has been hindered by significant capacity fading during cycling and structural instability under high current densities. In this study, we developed an innovative solution impregnation strategy to construct a metal-organic framework (MIL-100) protective layer on FeTiO₃ particles (denoted as FeTiO₃-MOF). This engineered architecture effectively addresses two critical challenges: (1) suppressing active material dissolution and electrode pulverization through physical confinement, and (2) enhancing charge transfer kinetics via the formation of continuous conductive pathways. The optimized FeTiO₃-MOF composite demonstrates remarkable electrochemical performance, delivering a high reversible capacity of 1077.5 mAh g⁻¹ after 150 cycles at 0.1 A g⁻¹ and maintaining 222 mAh g⁻¹ after 1000 cycles at 1 A g⁻¹ - quadruple the capacity of pristine FeTiO₃ (59 mAh g⁻¹) under identical conditions. Systematic electrochemical analysis reveals significantly improved charge transfer characteristics and lithium-ion diffusion coefficients, effectively mitigating the rapid capacity decay typically observed at elevated current densities. More importantly, this work establishes a novel self-replenishment mechanism through the rational utilization of metal ions within the MOF matrix, which dynamically compensates for active material loss during prolonged cycling. The proposed surface engineering strategy provides an effective method for developing next-generation energy storage materials that combine high capacity with exceptional cycling stability.</div></div>","PeriodicalId":304,"journal":{"name":"Electrochemistry Communications","volume":"178 ","pages":"Article 107998"},"PeriodicalIF":4.7,"publicationDate":"2025-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144653706","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Process compatibility analysis for hybrid electrochemical removal and accretion towards a multifunctional machine-tool: An application-oriented approach","authors":"Muhammad Hazak Arshad ,&nbsp;Anton Peeters ,&nbsp;Xiaolei Chen ,&nbsp;Dominiek Reynaerts ,&nbsp;Krishna Kumar Saxena","doi":"10.1016/j.elecom.2025.107997","DOIUrl":"10.1016/j.elecom.2025.107997","url":null,"abstract":"<div><div>The demand for multifunctional and multi-material parts has driven the development of hybrid manufacturing technologies. Laser-based additive and subtractive techniques offer design flexibility but are unsuitable for smart components, high-end aerospace and biomedical applications due to thermal defects. In contrast, electrochemical additive manufacturing (ECAM) and electrochemical machining (ECM) are non-contact in nature with minimal thermal load, which can preserve material properties while enabling material accretion and removal, respectively as governed by the Faraday's laws of electrolysis. However, sequential processing with ECM and ECAM is challenging to achieve on the same platform due to different compatible process windows, electrolytes, and localisation issues.</div><div>Therefore, this study presents successful hybridisation of maskless ECM and ECAM processes on a multifunctional machine-tool, enabling bi-directional feature fabrication (via ECAM) and shaping (via ECM) in one clamp, where the process localisation is achieved by an electrolyte confining air-column. The experiments examined the influence of process parameters and investigated process compatibility to demonstrate the potential of this hybrid technique. The air column at 1.1 bar improved process localisation by reducing the ECAM feature width by 60 % in comparison to no air-confinement (0 bar). Additionally, the best surface quality of ∼0.33 μm Sa with ECAM at 5 V was achieved at 50 % duty cycle with 20 μs pulse period as voltage pulsing allowed flushing of by-products from the interelectrode gap and shorter pulses reduced gas bubbles generation. Furthermore, it was possible to demonstrate layered manufacturing and mould repair applications using appropriate process parameters to avoid stray removal and accretion during bi-directional ECM and ECAM. These results represent a significant step in hybrid electrochemical manufacturing towards realising advanced multi-material and multi-functional component applications.</div></div>","PeriodicalId":304,"journal":{"name":"Electrochemistry Communications","volume":"178 ","pages":"Article 107997"},"PeriodicalIF":4.7,"publicationDate":"2025-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144633795","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Oxalate-assisted synthesis of MnCo2O4 nanoparticles on layered MXene (Ti3C2Tx) for supercapacitor application","authors":"S. Emami,&nbsp;M. Hasheminiasari,&nbsp;S.M. Masoudpanah,&nbsp;R. Omrani,&nbsp;S.P. Ghaemi","doi":"10.1016/j.elecom.2025.107995","DOIUrl":"10.1016/j.elecom.2025.107995","url":null,"abstract":"<div><div>The synthesis of MnCo₂O₄/Ti₃C₂Tx composite powders was achieved through a hydrothermal method facilitated by oxalate assistance. To assess the influence of MXene levels (0, 25, and 50 wt%) on microstructure, structure, and electrochemical performance, modern characterization methods were applied in this study. The mixed manganese‑cobalt oxalates were precipitated on the layered MXene by adding a proper amount of oxalic acid to the Nitride solution. The MnCo₂O₄ nanoparticles were then crystallized by heat treatment at 450 °C for one hour in a nitrogen gas atmosphere. The pristine MnCo₂O₄ had a columnar-like morphology, which was transformed into a fine particulate microstructure by combining with MXene. These pristine MnCo₂O₄ powders indicated a higher specific capacitance of 1116 F g⁻¹, significantly exceeding the 640.5 Fg⁻¹ recorded for the pristine layered MXene. The Incorporation of 25 wt% layered MXene enhanced the specific capacitance to a remarkable 1500 Fg⁻¹, attributed to its finer microstructure. Under a current rate of 1 Ag⁻¹, the capacitor composed of MnCo₂O₄-25 wt% MXene//activated carbon achieved an energy density of 43.5 Wh kg⁻¹ at a power density of 1411 W kg⁻¹.</div></div>","PeriodicalId":304,"journal":{"name":"Electrochemistry Communications","volume":"178 ","pages":"Article 107995"},"PeriodicalIF":4.7,"publicationDate":"2025-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144588275","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Developing PI@PANI composites for aqueous zinc-ion batteries","authors":"Ya Zhao ,&nbsp;Lintao Wu ,&nbsp;Hexiang Zhong ,&nbsp;Lin Li ,&nbsp;Jiaxin Fan","doi":"10.1016/j.elecom.2025.107994","DOIUrl":"10.1016/j.elecom.2025.107994","url":null,"abstract":"<div><div>Polyimide electrode materials exhibit good electrochemical performance; however, their low conductivity limits their application. To address this issue, this study synthesized polyaniline-polyimide (PI@PANI) composites through chemical oxidative polymerization and solvothermal methods. The effects of the polyaniline ratio on the morphology, specific surface area, molecular weight, and electrochemical performance of the composites were investigated. The PI@PANI maintained its characteristic morphology, and when the polyaniline ratio was higher, the specific surface area of the composites increased along with the increase of high molecular weight polymers, while thermal stability slightly decreased. As an electrode material in zinc half-cells, Zn//PI@PANI (PI@PANI-2, NTCDA: ANI = 1:1) showed good cycling performance and rate capability. At a current density of 250 mA/g, after 400 cycles, the capacity retention reached as high as 90 %. Additionally, during full cell tests, the PI@PANI// MnO₂ full cell maintained a high capacity retention of 86 % after 500 cycles at a current density of 200 mA/g. These results indicate that the PI@PANI composites have significant application potential in the field of electrochemical energy storage, providing theoretical guidance and experimental evidence for further optimizing the composition and structure of the composites to enhance their electrochemical performance.</div></div>","PeriodicalId":304,"journal":{"name":"Electrochemistry Communications","volume":"178 ","pages":"Article 107994"},"PeriodicalIF":4.7,"publicationDate":"2025-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144595510","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of solvent type on solution synthesis of Na3V2(PO4)3/C cathode material for Na storage","authors":"R. Talei,&nbsp;S.M. Masoudpanah,&nbsp;M. Hasheminiasari,&nbsp;H. Nasrinpour","doi":"10.1016/j.elecom.2025.107992","DOIUrl":"10.1016/j.elecom.2025.107992","url":null,"abstract":"<div><div>Na₃V₂(PO₄)₃/C powders were prepared using a solution technique with cetyltrimethylammonium bromide (CTAB) in various solvents, including ethanol, methanol, and glycerol. The impact of the solvent choice on the structural, microstructural, and electrochemical properties was elucidated by X-ray diffractometry, Raman spectroscopy, electron microscopy, galvanostatic charge-discharge, and electrochemical impedance spectroscopy methods. Single-phase Na₃V₂(PO₄)₃ (NVP) powders were achieved by calcining at 850 °C for 6 h, irrespective of the solvent type. Decomposition of the CTAB agent resulted in a carbon layer over the nearly spherical NVP particles. The methanol solvent revealed a finer particle size, leading to superior electrochemical performance, such as a capacity retention of 82 % after 50 cycles at a 1C current rate and a rate capability of 71.63 % when increasing the current rate from 0.1C to 1C. The superior quality carbon layer on the NVP particles, achieved by the methanol solvent, played a key role in the enhanced electrochemical performance.</div></div>","PeriodicalId":304,"journal":{"name":"Electrochemistry Communications","volume":"178 ","pages":"Article 107992"},"PeriodicalIF":4.7,"publicationDate":"2025-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144534282","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Unsupported and carbon-supported silver catalysts for oxygen reduction reaction in alkaline media","authors":"Jonas Mart Linge ,&nbsp;Xiang Lyu ,&nbsp;Heiki Erikson ,&nbsp;Lynda Amichi ,&nbsp;David A. Cullen ,&nbsp;Kaido Tammeveski ,&nbsp;Alexey Serov","doi":"10.1016/j.elecom.2025.107991","DOIUrl":"10.1016/j.elecom.2025.107991","url":null,"abstract":"<div><div>Quick and easy Ag catalysts preparation via wet chemical synthesis method using only reducing agent (pure-Ag); reducing agent and citric acid as the capping agent (Ag-CA); and carbon support (KetjenBlack 600J), capping agent, and the reducing agent (Ag/C) is demonstrated. The Ag-based electrocatalysts are characterized by high-angle annular dark-field scanning transmission electron microscopy (HAADF-STEM) with energy-dispersive X-ray spectroscopy (EDS), scanning electron microscopy (SEM), X-ray diffraction (XRD) analysis, and X-ray photoelectron spectroscopy (XPS). The electrocatalytic activity of Ag catalysts for O₂ reduction reaction (ORR) in 1 M KOH is evaluated using the rotating (ring)-disc electrode method. SEM and HAADF-STEM results show that the unsupported pure-Ag and Ag-CA catalysts consist mainly of big agglomerates, and Ag/C has the smallest agglomerates and some sub-3 nm Ag nanoparticles. The XPS results reveal that Ag in all the catalysts is in the metallic form (Ag⁰). Despite consisting of big agglomerates, the Ag-CA catalyst exhibits similar ORR electrocatalytic activity to that of Ag/C. Ag-CA (unsupported) shows the lowest hydrogen peroxide yield. These results are of great importance for the development of Ag-based catalysts that can be prepared in a fast, simple and easily up scalable fashion, for anion exchange membrane fuel cells.</div></div>","PeriodicalId":304,"journal":{"name":"Electrochemistry Communications","volume":"178 ","pages":"Article 107991"},"PeriodicalIF":4.7,"publicationDate":"2025-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144549800","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Nanoporous ZnGa2O4-modified separator as a multifunctional polysulphide barrier for advanced lithium-sulfur batteries","authors":"Zifan Wang,&nbsp;Wensi Li,&nbsp;Tianzhen Wang,&nbsp;Mingyuan Pang,&nbsp;Zhen Kong,&nbsp;Juan An,&nbsp;Zhen Li,&nbsp;Jiajia Ye,&nbsp;Guang Xia","doi":"10.1016/j.elecom.2025.107990","DOIUrl":"10.1016/j.elecom.2025.107990","url":null,"abstract":"<div><div>Nanoporous ZnGa₂O₄ was synthesised as a separator modifier for lithium‑sulfur batteries via a one-step sol-gel process followed by high-temperature calcination. The modified separator could effectively adsorb and catalyse lithium polysulphides, thus inhibiting the shuttle effect and improving their redox kinetics. The three-dimensional porous structure of ZnGa₂O₄ with high surface area that can effectively relieve the volume expansion of S₈ during cycling process and provide transport channels for both electrons and Li⁺ ion. Consequently, the battery with the ZnGa₂O₄ interlayer exhibited excellent reversibility and stability, with a reversible capacity of 723.4 mAh·g⁻¹ after 300 cycles at 1C. Furthermore, Li<img>S cells with modified separators demonstrated enhanced rate capability (704.3 mAh g⁻¹ at 5C) compared with commercial separators.</div></div>","PeriodicalId":304,"journal":{"name":"Electrochemistry Communications","volume":"178 ","pages":"Article 107990"},"PeriodicalIF":4.7,"publicationDate":"2025-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144518908","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Porous carbon nanotube electrodes in 3D printed symmetric supercapacitors with stable electrochemical response","authors":"Siobhán Breen ,&nbsp;Vijaykumar Jadhav ,&nbsp;Colm Glynn ,&nbsp;Colm O'Dwyer","doi":"10.1016/j.elecom.2025.107988","DOIUrl":"10.1016/j.elecom.2025.107988","url":null,"abstract":"<div><div>Multi-walled carbon nanotube porous networks offer excellent capacitance and stable electrochemical response in 3D printed symmetric supercapacitors made by fused deposition modelling of conductive thermoset polylactic acid (PLA) current collectors. These electrodes show a stable voltammetric and galvanostatic response with an aqueous KOH electrolyte, without any pretreatment of the graphite-impregnated printed PLA. The printed supercapacitors showed capacitance values of ∼80 F g⁻¹ with a retention of &gt;96 %.</div></div>","PeriodicalId":304,"journal":{"name":"Electrochemistry Communications","volume":"177 ","pages":"Article 107988"},"PeriodicalIF":4.7,"publicationDate":"2025-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144517125","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Co9S8@CNFs cathode enables stable aluminum storage with 3D synergy and co-dominated mechanism","authors":"Ruiyuan Zhuang ,&nbsp;Jianhong Yang ,&nbsp;Jian-chun Wu","doi":"10.1016/j.elecom.2025.107989","DOIUrl":"10.1016/j.elecom.2025.107989","url":null,"abstract":"<div><div>Rechargeable aluminum ion batteries (AIBs) hold promises as the next generation of electrochemical energy storage systems, characterized by low cost, high specific energy, and enhanced safety. One of the primary obstacles hindering the development of AIBs is the scarcity of suitable cathode materials. Here, a novel cobalt sulfide@carbon nanofibers (Co₉S₈@CNFs) composite material was synthesized through electrostatic spinning, heat treatment, and sulfurization processes. The composite material consists of Co₉S₈ nanoparticles uniformly anchored on interconnected CNFs to form a three-dimensional (3D) porous network structure, which is conducive to the penetration of electrolyte. Structural and morphological analysis confirmed the high crystallinity of Co₉S₈ and its uniform distribution on CNFs. The in-situ growth of Co₉S₈ nanoparticles on the surface of CNFs helps shorten the migration path of electrons and effectively solves the problem of peeling off from the CNFs substrate during charging and discharging process. As a self-supporting cathode for AIBs, the electrode exhibits good cycle life. Electrochemical evaluation demonstrated a reversible discharge capacity of ∼60 mAh g⁻¹ at 100 mA g⁻¹ with stable cycling performance over 400 cycles. The composite cathode exhibited small charge transfer resistance and improved ion diffusion kinetics, attributed to the conductive CNFs network and 3D porous structure. First-principles calculations further elucidate the energy storage mechanism, revealing that Al³⁺ preferentially replaces Co atoms in the Co₉S₈ lattice during cycling, with a formation energy of 0.92 eV. This work emphasizes the synergistic effect of Co₉S₈@CNFs integration in alleviating rapid capacity degradation and enhancing structural stability, providing a promising strategy for designing high-performance AIB cathodes.</div></div>","PeriodicalId":304,"journal":{"name":"Electrochemistry Communications","volume":"177 ","pages":"Article 107989"},"PeriodicalIF":4.7,"publicationDate":"2025-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144502605","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}