Journal of Electroanalytical Chemistry最新文献

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Research progress on doping modification of lithium-rich manganese-based layered oxide cathode materials 富锂锰基层状氧化物正极材料掺杂改性研究进展
IF 4.1 3区 化学
Journal of Electroanalytical Chemistry Pub Date : 2026-03-01 Epub Date: 2026-01-06 DOI: 10.1016/j.jelechem.2026.119795
Yiqi Zheng , Yingjie Ji , Zhen Zhang , Yi Yao , Yi Zhang , Zhoulu Wang , Xiang Liu
{"title":"Research progress on doping modification of lithium-rich manganese-based layered oxide cathode materials","authors":"Yiqi Zheng ,&nbsp;Yingjie Ji ,&nbsp;Zhen Zhang ,&nbsp;Yi Yao ,&nbsp;Yi Zhang ,&nbsp;Zhoulu Wang ,&nbsp;Xiang Liu","doi":"10.1016/j.jelechem.2026.119795","DOIUrl":"10.1016/j.jelechem.2026.119795","url":null,"abstract":"<div><div>With the development of society, lithium-ion batteries are facing higher demands for energy density from electric vehicles, consumer (3C) electronic products, energy storage devices, and other applications. Lithium-rich manganese-based cathode materials have advantages such as high specific capacity (≈ 250 mAh g<sup>−1</sup>), high operating voltage (≈ 3.6 V), and low cost, making them promising candidates for the next generation of commercial high-specific-energy batteries. However, this material has many problems, such as lattice oxygen evolution, transition metal ion migration, low initial Coulombic efficiency, voltage and capacity fade, and interfacial side reactions, which limit its commercial application. This paper reviews the latest research progress on the doping of lithium-rich manganese-based cathode materials, focusing on aspects such as synthesis methods, reaction mechanisms, and electrochemical properties. Research shows that ion doping can significantly improve the electrochemical performance of lithium-rich manganese-based cathode materials. Finally, the doping directions of lithium-rich manganese-based cathode materials are prospected.</div></div>","PeriodicalId":355,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"1004 ","pages":"Article 119795"},"PeriodicalIF":4.1,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145975385","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Ce3+ doping modulates low-spin Fe active sites and sodium-ion diffusion kinetics to enhance Prussian blue cathode performance Ce3+掺杂调节低自旋铁活性位点和钠离子扩散动力学,提高普鲁士蓝阴极性能
IF 4.1 3区 化学
Journal of Electroanalytical Chemistry Pub Date : 2026-02-15 Epub Date: 2026-01-05 DOI: 10.1016/j.jelechem.2026.119792
Binghong Li , Fuliang Zhu , Yanshuang Meng
{"title":"Ce3+ doping modulates low-spin Fe active sites and sodium-ion diffusion kinetics to enhance Prussian blue cathode performance","authors":"Binghong Li ,&nbsp;Fuliang Zhu ,&nbsp;Yanshuang Meng","doi":"10.1016/j.jelechem.2026.119792","DOIUrl":"10.1016/j.jelechem.2026.119792","url":null,"abstract":"<div><div>Iron-based Prussian blue (FeHCF) have garnered significant attention as cathode materials for sodium-ion batteries due to their high theoretical capacity and open 3D framework. However, their practical performance is severely limited by the shielding of low-spin Fe (Fe<sup>LS</sup>) active sites due to Fe(CN)<sub>6</sub> vacancies and crystalline water, as well as sluggish kinetics resulting from their semiconducting nature. This study proposes a cerium (Ce<sup>3+</sup>) doping strategy that significantly enhances the sodium storage performance of FeHCF through a dual mechanism of defect repair and electronic modulation. Experimental results demonstrate that Ce<sup>3+</sup> doping not only fills [Fe(CN) <sub>6</sub>] vacancies and repels crystalline water, thereby reactivating the shielded Fe<sup>LS</sup> active sites (increasing capacity contribution from 22.98 mAh g<sup>−1</sup> to 47.8 mAh g<sup>−1</sup>), but also elevates the Fermi-level density of states via 4f-3d orbital hybridization, endowing the material with quasi-metallic characteristics. The optimized FeHCF-5 material delivers a reversible capacity of 120.6 mAh g<sup>−1</sup>, maintains 88.5 mAh g<sup>−1</sup> at a high current density of 500 mA g<sup>−1</sup>, and achieves a capacity retention of 80.4 % after 200 cycles. Combined with theoretical calculations, this work reveals that Ce<sup>3+</sup> doping synergistically optimizes electron conduction and ion diffusion kinetics by reducing the sodium-ion diffusion energy barrier (from 0.356 eV to 0.19 eV) and widening ion transport channels (the Na<sup>+</sup> diffusion coefficient increases by 14.14-fold to 5.373 × 10<sup>−9</sup> cm<sup>2</sup> s<sup>−1</sup>). This study provides new insights for designing high-performance sodium storage materials.</div></div>","PeriodicalId":355,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"1003 ","pages":"Article 119792"},"PeriodicalIF":4.1,"publicationDate":"2026-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145922278","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Melanin-driven heteroatom incorporation in bird feather-derived activated carbon for high-performance supercapacitors 用于高性能超级电容器的鸟羽毛衍生活性炭中黑色素驱动的杂原子掺入
IF 4.1 3区 化学
Journal of Electroanalytical Chemistry Pub Date : 2026-02-15 Epub Date: 2025-12-30 DOI: 10.1016/j.jelechem.2025.119777
Kapil Dev Verma , Kamal K. Kar
{"title":"Melanin-driven heteroatom incorporation in bird feather-derived activated carbon for high-performance supercapacitors","authors":"Kapil Dev Verma ,&nbsp;Kamal K. Kar","doi":"10.1016/j.jelechem.2025.119777","DOIUrl":"10.1016/j.jelechem.2025.119777","url":null,"abstract":"<div><div>In the rapidly advancing field of energy storage, the integration of sustainable materials with superior performance metrics has become essential. Bird feathers, an abundant byproduct of poultry and domestic waste, are largely underutilised and contribute to environmental concerns due to their resistance to degradation. Composed of β-keratin and melanin pigments, feathers offer a unique opportunity for sustainable conversion into value-added carbon materials. In this study, feathers of three distinct colours, black (crow), grey (peacock), and white (duck), were employed as precursors for activated carbon electrodes to evaluate the role of melanin concentration on heteroatom incorporation and electrochemical performance. The prepared activated carbons demonstrated a strong correlation between pigmentation and specific capacitance, attributed to melanin-induced nitrogen and oxygen functionalities. The symmetric supercapacitors delivered specific capacitances of 361 ± 10 F g<sup>−1</sup> for crow feather-derived carbon, 384 ± 2.5 F g<sup>−1</sup> for peacock feather-derived carbon, and 341 ± 9 F g<sup>−1</sup> for duck feather-derived carbon at 1 A g<sup>−1</sup> in 6 M KOH electrolyte. These findings establish bird feathers as a sustainable carbon precursor and highlight the critical role of melanin content in enhancing electrochemical charge storage, thereby offering a pathway for environmentally benign and high-performance supercapacitor electrode materials.</div></div>","PeriodicalId":355,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"1003 ","pages":"Article 119777"},"PeriodicalIF":4.1,"publicationDate":"2026-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145881864","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Construction of defect-engineered ZnS/BP to form S-vacancy heterojunction catalyst for the electrocatalytic reduction of N2 to NH3 构建缺陷工程ZnS/BP形成s -空位异质结催化剂用于电催化还原N2制NH3
IF 4.1 3区 化学
Journal of Electroanalytical Chemistry Pub Date : 2026-02-15 Epub Date: 2025-12-25 DOI: 10.1016/j.jelechem.2025.119758
Shaona Chen , Tianwei Liang , Demiao Fang , Jie Qin , Rengui Weng , Zhongxu Dai
{"title":"Construction of defect-engineered ZnS/BP to form S-vacancy heterojunction catalyst for the electrocatalytic reduction of N2 to NH3","authors":"Shaona Chen ,&nbsp;Tianwei Liang ,&nbsp;Demiao Fang ,&nbsp;Jie Qin ,&nbsp;Rengui Weng ,&nbsp;Zhongxu Dai","doi":"10.1016/j.jelechem.2025.119758","DOIUrl":"10.1016/j.jelechem.2025.119758","url":null,"abstract":"<div><div>This paper successfully synthesized a new type of heterojunction material (Vs-ZnS/BP), which is composed of black phosphorus nanosheets and S vacancy defective ZnS nanoparticles. The results show that this material directly possesses a heterojunction, which can effectively enhance the electrocatalytic activity. In 0.1 M Na<sub>2</sub>SO<sub>4</sub>, the ammonia production rate of the newly prepared catalyst reaches 48.2 μgh<sup>−1</sup>mgcat<sup>−1</sup> at −0.5 V (vs. RHE), and the Faraday efficiency reaches 33.39% at −0.2 V (vs. RHE). Through DFT calculations, it is proved that the introduction of S vacancies provides reaction sites for the N<sub>2</sub>-NH<sub>3</sub> conversion and can also activate the N<sub>2</sub> molecule. Compared with black phosphorus, the heterojunction composite material significantly improves the ammonia synthesis yield and Faraday efficiency.</div></div>","PeriodicalId":355,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"1003 ","pages":"Article 119758"},"PeriodicalIF":4.1,"publicationDate":"2026-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145881953","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Synthesis and electrochemical performance of phenylamine tin chloride nanocrystals/reduced graphene oxide (PhASn2Cl5 NCs/rGO) nanocomposite-based electrode materials for advanced supercapacitors 先进超级电容器用苯胺氯化锡纳米晶/还原氧化石墨烯纳米复合电极材料的合成及电化学性能
IF 4.1 3区 化学
Journal of Electroanalytical Chemistry Pub Date : 2026-02-15 Epub Date: 2025-12-28 DOI: 10.1016/j.jelechem.2025.119774
Nitin , Milan Kumar Bera , Gajal Singla , Soumen Basu , Kumar Venkatesan , Manickam Selvaraj , Nikhil Kumar , S. Chakrabarti
{"title":"Synthesis and electrochemical performance of phenylamine tin chloride nanocrystals/reduced graphene oxide (PhASn2Cl5 NCs/rGO) nanocomposite-based electrode materials for advanced supercapacitors","authors":"Nitin ,&nbsp;Milan Kumar Bera ,&nbsp;Gajal Singla ,&nbsp;Soumen Basu ,&nbsp;Kumar Venkatesan ,&nbsp;Manickam Selvaraj ,&nbsp;Nikhil Kumar ,&nbsp;S. Chakrabarti","doi":"10.1016/j.jelechem.2025.119774","DOIUrl":"10.1016/j.jelechem.2025.119774","url":null,"abstract":"<div><div>Large organic cation-based metal halide hybrid perovskites have emerged as promising next-generation materials for energy storage, offering a less toxic alternative to conventional inorganic halides. Herein, we report the synthesis and electrochemical evaluation of zero-dimensional phenylamine tin chloride (PhASn₂Cl₅) nanocrystals (NCs) and their reduced graphene oxide (rGO) nanocomposite (PhASn₂Cl₅/rGO) as supercapacitor electrodes. The NCs were prepared via a facile hydrothermal method, yielding an average particle size of ∼31 nm and crystallizing in a tetragonal AB₂X₅ (I4/cm) structure with high crystallinity and negligible lattice strain. HRTEM and SAED confirm phase purity, while TGA indicates thermal stability up to ∼325 °C. Dielectric and electrical modulus analyses reveal strong interfacial polarization, non-Debye relaxation, and bulk-dominated charge transport, with high ion diffusion (1.8 × 10<sup>−6</sup> m<sup>2</sup>·s<sup>−1</sup>) and mobility (∼7.13 × 10<sup>−5</sup> m<sup>2</sup>·V<sup>−1</sup>·s<sup>−1</sup>). Electrochemical studies demonstrate hybrid capacitive behavior, combining electric double-layer capacitance (EDLC) and pseudocapacitance, with low internal resistance, excellent cyclic stability (95% capacitance retention), and a specific capacitance of ∼3.9 F·g<sup>−1</sup> at 20 mV·s<sup>−1</sup>. The PhASn₂Cl₅/rGO nanocomposite exhibits enhanced performance, achieving an energy density of 3.28 Wh·kg<sup>−1</sup> and a power density of 342.86 W·kg<sup>−1</sup> at 3 mA·cm<sup>−2</sup>. Kinetic analysis indicates diffusion-controlled processes dominate at low scan rates (∼96% at 0.02 V·s<sup>−1</sup>), while capacitive contributions increase at higher rates (∼12% at 0.2 V·s<sup>−1</sup>), suggesting a synergistic mechanism where rGO provides EDLC and PhASn₂Cl₅ NCs contribute pseudocapacitance. A prototype solid-state supercapacitor successfully powered LEDs, demonstrating the practical applicability of these materials in next-generation energy storage devices.</div></div>","PeriodicalId":355,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"1003 ","pages":"Article 119774"},"PeriodicalIF":4.1,"publicationDate":"2026-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145881960","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Design of polypyrrole-modified NiCo-LDH electrocatalysts for high-performance seawater electrolysis 聚吡咯改性NiCo-LDH高性能海水电解电催化剂的设计
IF 4.1 3区 化学
Journal of Electroanalytical Chemistry Pub Date : 2026-02-15 Epub Date: 2025-12-30 DOI: 10.1016/j.jelechem.2025.119759
Ziqi Wang , Xiaomei Wang , Zhihao Xia , Tian Tian , Yucai Li , Shiwei Song , Jian Wang , Fang Hu , Lihua Miao
{"title":"Design of polypyrrole-modified NiCo-LDH electrocatalysts for high-performance seawater electrolysis","authors":"Ziqi Wang ,&nbsp;Xiaomei Wang ,&nbsp;Zhihao Xia ,&nbsp;Tian Tian ,&nbsp;Yucai Li ,&nbsp;Shiwei Song ,&nbsp;Jian Wang ,&nbsp;Fang Hu ,&nbsp;Lihua Miao","doi":"10.1016/j.jelechem.2025.119759","DOIUrl":"10.1016/j.jelechem.2025.119759","url":null,"abstract":"<div><div>Among numerous transition metal hydrogen evolution reaction catalysts, nickel-based catalysts have garnered significant attention for their relatively better electrocatalytic activity. The hydrothermal-electrodeposition method provides an effective route for preparing relatively better nickel-based catalysts. Building upon this, this study successfully synthesised NiCo-LDH@PPy. Under alkaline conditions, NiCo-LDH@PPy-100 exhibits a HER overpotential of 210.7 mV at 50 mA cm<sup>−2</sup> and a double-layer capacitance of 0.013 mF cm<sup>−2</sup>. Following 28 h of constant current testing, XPS experiments revealed minimal changes in elemental composition, suggesting good stability of the sample under electrochemical conditions. To more accurately evaluate the practical application potential of the catalyst, when the electrolyte was switched to alkaline seawater, NiCo-LDH@PPy-100 exhibits HER and OER overpotentials of 223.7 mV and 270 mV at 50 mA cm<sup>−2</sup>, respectively. The overall water splitting potential was 1.64 V at a current density of 10 mA cm<sup>−2</sup>, and the catalyst demonstrated excellent electrochemical stability during 50 h of continuous testing, offering a viable alternative to precious metal catalysts for seawater splitting.</div></div>","PeriodicalId":355,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"1003 ","pages":"Article 119759"},"PeriodicalIF":4.1,"publicationDate":"2026-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145881957","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Enhanced structural stability and electrochemical performance of niobium-doped Li-rich manganese-based cathode materials 增强了掺铌富锂锰基正极材料的结构稳定性和电化学性能
IF 4.1 3区 化学
Journal of Electroanalytical Chemistry Pub Date : 2026-02-15 Epub Date: 2026-01-09 DOI: 10.1016/j.jelechem.2026.119828
Yang Jiang, Jijiang Huang, Jing Li, Yang Yang, Hongyan Xie
{"title":"Enhanced structural stability and electrochemical performance of niobium-doped Li-rich manganese-based cathode materials","authors":"Yang Jiang,&nbsp;Jijiang Huang,&nbsp;Jing Li,&nbsp;Yang Yang,&nbsp;Hongyan Xie","doi":"10.1016/j.jelechem.2026.119828","DOIUrl":"10.1016/j.jelechem.2026.119828","url":null,"abstract":"<div><div>Lithium-rich Mn-based layered oxides are promising cathodes for next-generation high-energy-density lithium-ion batteries. However, their practical use is limited by rapid voltage fading and sluggish high-rate performance. Introducing high-valent dopants such as Nb<sup>5+</sup> is expected to induce charge compensation and strengthen the local TM–O framework, thereby mitigating high-voltage degradation. Here we introduce Nb into cobalt-free Li<sub>1.2</sub>Mn<sub>0.6−x</sub>Nb<sub>x</sub>Ni<sub>0.2</sub>O<sub>2</sub> (x = 0, 0.01, 0.02, 0.03) through a coprecipitation-compatible, water-assisted wet-grinding step followed by calcination, aiming to improve precursor-level mixing and enable controllable high-valent doping. Among the compositions, LLO-0.02Nb delivers the best overall performance, retaining 80% capacity after 200 cycles at 1C (vs. 78% for pristine LLO) and providing 163 and 142 mAh·g<sup>−1</sup> at 5C and 10C, respectively, together with a reduced voltage-decay tendency (1.87 mV per cycle). After-cycling electrode analyses (XRD/SEM) reveal better preserved layered-related features and less severe surface degradation for the Nb-doped electrode. Surface spectroscopy (XPS/EPR) further indicates that Nb incorporation regulates the near-surface oxygen environment and transition-metal valence states via charge compensation. These results suggest that a mild Nb addition, enabled by a simple wet-assisted introduction route, can simultaneously enhance voltage stability, cycling durability, and rate capability of Li-rich Mn-based cathodes.</div></div>","PeriodicalId":355,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"1003 ","pages":"Article 119828"},"PeriodicalIF":4.1,"publicationDate":"2026-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145973495","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Interfacial engineering of polymer-functionalized Ti3C2 MXene nanocomposites for enhanced enzyme immobilization and high-performance H2O2 biosensing 聚合物功能化Ti3C2 MXene纳米复合材料的界面工程及其酶固定化和高性能H2O2生物传感
IF 4.1 3区 化学
Journal of Electroanalytical Chemistry Pub Date : 2026-02-15 Epub Date: 2025-12-22 DOI: 10.1016/j.jelechem.2025.119757
Guixia Wang , Zhuo Yang , Min Wang , Huaxin Xu , Xianming Liu
{"title":"Interfacial engineering of polymer-functionalized Ti3C2 MXene nanocomposites for enhanced enzyme immobilization and high-performance H2O2 biosensing","authors":"Guixia Wang ,&nbsp;Zhuo Yang ,&nbsp;Min Wang ,&nbsp;Huaxin Xu ,&nbsp;Xianming Liu","doi":"10.1016/j.jelechem.2025.119757","DOIUrl":"10.1016/j.jelechem.2025.119757","url":null,"abstract":"<div><div>Polymer-functionalized Ti<sub>3</sub>C<sub>2</sub> MXene nanocomposites enable biocompatible immobilization of horseradish peroxidase (HRP). Using Ti<sub>3</sub>C<sub>2</sub> MXene- Polyacrylamide (PAM) as a model, the resulting Ti<sub>3</sub>C<sub>2</sub>-PAM/HRP hybrid electrode exhibits exceptional electrocatalytic activity toward H<sub>2</sub>O<sub>2</sub> reduction in neutral phosphate buffer (containing 1 mM hydroquinone). This electrode demonstrates superior performance with a wider linear range (0.3–0.9 mM) and lower detection limit (1.4 μM, S/N = 3) compared to pristine Ti<sub>3</sub>C<sub>2</sub>-PAM and Ti<sub>3</sub>C<sub>2</sub>/HRP controls. The enhancement originates from synergistic coupling between MXene conductivity and HRP biocatalysis, facilitated by the polymer-mediated formation of 3D conductive networks that minimize charge-transfer resistance. Structural and electrochemical analysis confirms optimized enzyme-electrode interactions and biocompatibility. This work establishes a versatile interfacial engineering strategy for creating high-performance enzyme-MXene hybrids, demonstrating significant potential for detecting redox biomarkers and adaptable to diverse enzymatic systems.</div></div>","PeriodicalId":355,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"1003 ","pages":"Article 119757"},"PeriodicalIF":4.1,"publicationDate":"2026-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145814243","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Label-free molecularly imprinted polymer–based impedimetric biosensor for rapid detection of Morganella morganii in real samples 基于分子印迹聚合物的无标记阻抗生物传感器,用于快速检测真实样品中的莫氏摩根菌
IF 4.1 3区 化学
Journal of Electroanalytical Chemistry Pub Date : 2026-02-15 Epub Date: 2026-01-06 DOI: 10.1016/j.jelechem.2026.119793
Hüseyin Oğuzhan Kaya , Yamaç Tekintaş , Fatma Kurul , Turku Acıkgoz , Seda Nur Topkaya
{"title":"Label-free molecularly imprinted polymer–based impedimetric biosensor for rapid detection of Morganella morganii in real samples","authors":"Hüseyin Oğuzhan Kaya ,&nbsp;Yamaç Tekintaş ,&nbsp;Fatma Kurul ,&nbsp;Turku Acıkgoz ,&nbsp;Seda Nur Topkaya","doi":"10.1016/j.jelechem.2026.119793","DOIUrl":"10.1016/j.jelechem.2026.119793","url":null,"abstract":"<div><div><strong><em>Morganella morganii</em></strong> is an emerging opportunistic pathogen associated with urinary tract infections, yet no selective biosensing platform has been reported for its rapid detection. In this study, we present the first molecularly imprinted polymer (MIP)-based electrochemical biosensor specifically tailored for <strong><em>M. morganii,</em></strong> enabling label-free, highly selective, and low-cost detection. The sensor was fabricated by electropolymerizing phenol in the presence of whole-cell bacteria on pencil graphite electrodes, followed by template removal to generate specific recognition cavities. Successful imprinting and selective rebinding were verified by electrochemical impedance spectroscopy and cyclic voltammetry<strong>.</strong></div><div>The biosensor demonstrated a low LOD of 3.0 CFU/mL in real urine<strong>,</strong> excellent linearity (R<sup>2</sup> &gt; 0.99), and high reproducibility (RSD &lt; 10 %), confirming robust analytical performance. Notably, the sensor maintained high sensitivity in complex urine matrices, indicating strong matrix tolerance<strong>.</strong> Selectivity studies showed imprinting factors of 4.5–10.1 against <em>E. coli, K. pneumoniae, S. aureus,</em> and <em>E. faecalis</em>, confirming excellent discrimination capability. The biosensor retained &gt;95 % of its initial response for 3 days and ∼ 56 % after 14 days<strong>,</strong> demonstrating satisfactory stability.</div><div>Compared to conventional microbiological and molecular assays, this MIP-based platform offers a rapid and label-free strategy for early detection of <em>M. morganii</em> in urinary tract infection diagnostics.</div></div>","PeriodicalId":355,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"1003 ","pages":"Article 119793"},"PeriodicalIF":4.1,"publicationDate":"2026-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145922199","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A corn stalks-derived porous carbon‑silicon composite as lithium-ion battery anode materials 一种玉米秸秆衍生多孔碳硅复合材料作为锂离子电池负极材料
IF 4.1 3区 化学
Journal of Electroanalytical Chemistry Pub Date : 2026-02-15 Epub Date: 2026-01-07 DOI: 10.1016/j.jelechem.2026.119805
Siyu Zhang , Mingtao Ding , Runfeng Song , Lili Yang , Dan Lv , Jingyi Luan , Wenbin Hu , Cheng Zhong
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