Electrochemistry Communications最新文献

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A dual-aptamer biosensor based on NPG for one-step and rapid HER2 detection in breast cancer 基于NPG的双适体生物传感器一步快速检测乳腺癌HER2

IF 4.2 3区工程技术 Q2 ELECTROCHEMISTRY

Electrochemistry Communications

Pub Date : 2026-04-01 Epub Date: 2026-02-21 DOI: 10.1016/j.elecom.2026.108126

Caiyuan Yu , Cui Wu , Li Feng , Peng Huang , Zhuxia Zhang

The poor biological stability of antibodies and significant steric hindrance in HER2 immune biosensors limit their sensitivity and stability. To address this challenge, a dual-aptamer electrochemical biosensor was developed to enable one-step and highly sensitive detection of the breast cancer biomarker HER2. Two aptamers respectively recognize different epitopes of HER2, forming a sandwich structure. And by introducing the electrochemical reporter Mb onto the electrode surface, an electric current signal related to the concentration of HER2 is generated. To further enhance the current response and improve the sensitivity of HER2 detection, the nano-porous gold (NPG) was modified onto the electrode surface to increase the specific surface area and reduce the resistance. This dual-aptamer biosensor has a very wide linear range (1 pg/mL–100 μg/mL) in HER2 detection, with a limit of detection (LOD) as low as 0.212 pg/mL. The dual-aptamer biosensor shows a selectivity of over 10³ times for interfering substances such as CEA, Ki-67, IgG, and nucleic acids; the signal remains stable at 92.7% after being stored at 4 °C for 15 days, with RSDs of less than 5% for high, medium, and low concentrations. Based on the above results, this dual-aptamer biosensor meets the clinical requirements of high sensitivity, specificity, long-term storage and repeated detection. Moreover, it is simple to operate, fast, and low in cost, providing a potential tool for early screening of breast cancer, monitoring of treatment efficacy, and prognosis assessment.

抗体的生物稳定性差，HER2免疫生物传感器存在明显的位阻，限制了其灵敏度和稳定性。为了解决这一挑战，研究人员开发了一种双适体电化学生物传感器，可以一步检测乳腺癌生物标志物HER2，并且灵敏度很高。两个适体分别识别HER2的不同表位，形成三明治结构。通过在电极表面引入电化学报告分子Mb，产生与HER2浓度相关的电流信号。为了进一步增强电流响应，提高HER2检测的灵敏度，将纳米多孔金（NPG）修饰在电极表面，增加比表面积，降低电阻。该双适体生物传感器对HER2的检测具有很宽的线性范围（1 pg/mL ~ 100 μg/mL），检出限（LOD）低至0.212 pg/mL。双适体生物传感器对CEA、Ki-67、IgG、核酸等干扰物质的选择性超过103倍；4℃保存15 d后，信号稳定在92.7%，高、中、低浓度的rsd均小于5%。综上所述，该双适体生物传感器满足临床对高灵敏度、特异度、长期储存和重复检测的要求。此外，该方法操作简单、快速、成本低，为乳腺癌的早期筛查、治疗效果监测和预后评估提供了潜在的工具。

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引用次数: 0

Advancing CO2 electrolyzers from laboratory to industrial scale 推进二氧化碳电解槽从实验室走向工业规模

IF 4.2 3区工程技术 Q2 ELECTROCHEMISTRY

Electrochemistry Communications

Pub Date : 2026-04-01 Epub Date: 2026-02-23 DOI: 10.1016/j.elecom.2026.108129

Ya Liu , Yibin Chen , Yu Zhang

Electrochemical CO₂ reduction reaction (CO₂RR) driven by renewable energy represents a pivotal strategy for closing the anthropogenic carbon cycle. While catalyst development has advanced rapidly, the shift of intrinsic activities into industrial productivity is strictly governed by electrolyzer engineering. This review critically assesses the evolution of CO₂RR reactor configurations, moving from fundamental kinetic studies in H-cells to high-rate production in gas-fed systems including flow cells, membrane electrode assemblies, and emerging solid electrolyte/stacked systems. Particular attention is given to the physicochemical trade-offs and engineering bottlenecks hindering scale-up. Finally, we propose a strategic roadmap for future research, with the emphasis on dynamic operation, impurity tolerance, operando characterization techniques, and the integration of techno-economic analysis into future reactor design.

可再生能源驱动的电化学CO2还原反应（CO2RR）是关闭人为碳循环的关键策略。在催化剂发展迅速的同时，内在活动向工业生产力的转变受到电解槽工程的严格控制。这篇综述批判性地评估了CO2RR反应器配置的演变，从h电池的基本动力学研究到气供系统的高速生产，包括流动电池、膜电极组件和新兴的固体电解质/堆叠系统。特别注意的是物理化学权衡和工程瓶颈阻碍规模扩大。最后，我们提出了未来研究的战略路线图，重点是动态操作，杂质容限，operando表征技术，以及将技术经济分析整合到未来的反应堆设计中。

引用次数: 0

Hydrogen production via aqueous ammonia electrolysis: electrolyte optimization, product selectivity, and efficiency analysis 通过水氨电解制氢：电解质优化，产品选择性和效率分析

IF 4.2 3区工程技术 Q2 ELECTROCHEMISTRY

Electrochemistry Communications

Pub Date : 2026-04-01 Epub Date: 2026-02-20 DOI: 10.1016/j.elecom.2026.108124

Franciele Lamaison Fossaluza, Paulo Firmino Moreira, Claudio Augusto Oller do Nascimento, Maria Anita Mendes

This study presents a comprehensive investigation of aqueous ammonia electrolysis as an alternative method for hydrogen production. It explores various experimental conditions, energy, and Faradaic efficiencies, and the underlying electrochemical mechanisms. Cyclic voltammetry and electrolysis tests were conducted at different current densities (ranging from 50 to 700 mA) to determine the optimal conditions for hydrogen gas (H₂) generation. Gas chromatography with a thermal conductivity detector (GC-TCD) was used to confirm the production of hydrogen and verify the absence of gaseous nitrogen. Alongside the solution-phase analyses, these findings provide clear evidence for the formation of soluble by-products, primarily nitrite (NO₂⁻) and nitrate (NO₃⁻), as both species were detected and quantified in our measurements. The Faradaic efficiency reached 98%, while energy efficiency ranged from 59% to 75%. The results are compared with existing literature, emphasizing ammonia's potential as a sustainable hydrogen carrier and highlighting the current limitations of the process in aqueous media.

这项研究提出了一个全面的调查，水氨电解作为一种替代的方法生产氢。它探讨了各种实验条件、能量和法拉第效率，以及潜在的电化学机制。在不同电流密度（50 ~ 700 mA）下进行循环伏安法和电解试验，以确定氢气（H₂）生成的最佳条件。采用气相色谱-热导检测器（GC-TCD）确认氢的产生，并验证气态氮的不存在。除了溶液阶段的分析，这些发现为可溶性副产物的形成提供了明确的证据，主要是亚硝酸盐（NO₂−）和硝酸盐（NO₃−），因为这两种物质都在我们的测量中被检测和量化了。法拉第效率达到98%，而能源效率从59%到75%不等。结果与现有文献进行了比较，强调了氨作为可持续氢载体的潜力，并强调了该工艺在水介质中的当前局限性。

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引用次数: 0

High-entropy alloys for electrocatalysis: From fundamental properties to rational design and energy applications 电催化用高熵合金：从基本性质到合理设计和能源应用

IF 4.2 3区工程技术 Q2 ELECTROCHEMISTRY

Electrochemistry Communications

Pub Date : 2026-04-01 Epub Date: 2026-02-23 DOI: 10.1016/j.elecom.2026.108128

Yinggang Sun, Dechao Chen

Electrochemical energy conversion technologies are central to addressing global energy shortages and environmental pollution, yet their practical efficiency is often limited by sluggish reaction kinetics and the reliance on noble-metal-based catalysts. High-entropy alloys (HEAs), consisting of five or more elements in nearly equiatomic proportions, have garnered growing attention due to their distinctive properties, including exceptional strength, high hardness, excellent ductility, and corrosion resistance. In this review, we systematically examine the roles of HEAs in electrocatalytic energy conversion, with a particular focus on how their phase structures and core effects govern catalytic activity, selectivity, and durability. We further summarize recent advances in HEAs electrocatalyst synthesis and optimization, addressing challenges in scalable compositional control, stability under harsh conditions, and atomic-level regulation of defects and lattice strain. Finally, we outline future directions toward next-generation HEAs catalysts, highlighting opportunities in theory-experiment integration, advanced in situ characterization, large-scale synthesis with uniform composition, and quantitative structure-performance relationships. We anticipate that this review will stimulate further exploration and development of HEAs for electrochemical applications.

电化学能量转换技术是解决全球能源短缺和环境污染问题的核心，但其实际效率往往受到反应动力学缓慢和对贵金属催化剂的依赖的限制。高熵合金（high -entropy alloys, HEAs）是一种由五种或五种以上的元素以几乎相等的原子比例组成的合金，由于其独特的性能，包括超强的强度、高硬度、优异的延展性和耐腐蚀性，而受到越来越多的关注。在这篇综述中，我们系统地研究了HEAs在电催化能量转换中的作用，特别关注了它们的相结构和核心效应如何影响催化活性、选择性和耐久性。我们进一步总结了HEAs电催化剂的合成和优化的最新进展，解决了可扩展的成分控制、苛刻条件下的稳定性以及缺陷和晶格应变的原子水平调节方面的挑战。最后，我们概述了下一代HEAs催化剂的未来发展方向，强调了理论-实验集成、先进的原位表征、均匀组成的大规模合成和定量结构-性能关系的机会。我们期待这一综述将促进HEAs在电化学应用方面的进一步探索和发展。

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引用次数: 0

In-situ synthesis of zeolitic imidazolate framework-67 (ZIF-67) derived phosphorous-doped cobalt composites as bifunctional catalyst for photo-assisted water electrolysis 原位合成咪唑酸分子筛框架-67 （ZIF-67）衍生的磷掺杂钴复合材料作为光辅助水电解双功能催化剂

IF 4.2 3区工程技术 Q2 ELECTROCHEMISTRY

Electrochemistry Communications

Pub Date : 2026-04-01 Epub Date: 2026-02-05 DOI: 10.1016/j.elecom.2026.108122

Chun-I Lee , Jhao-Hua Zeng , Jia-He Peng , Yi-Yu Chen , Bing-Joe Hwang , Chun-Jern Pan

A phosphorus modified ZIF-67@TiO₂ photo assisted electrocatalytic heterostructure is developed to elucidate the structure performance relationship and the underlying reaction mechanism in alkaline water electrolysis. The in-situ growth of ZIF-67 on TiO₂ followed by controlled phosphorization induces partial framework reconstruction, generating CoP active sites and Ti³⁺ associated defect states while preserving the CoN coordination network of the MOF. This unique structural evolution enables efficient charge separation, accelerated interfacial electron transfer, and improved utilization of photogenerated carriers.

Electrochemical and optical characterizations reveal that TiO₂ primarily functions as a photogenerated charge supplier, while phosphorized ZIF-67 serves as the dominant electrocatalytic component. Suppressed photoluminescence intensity and enhanced transient photocurrent responses confirm efficient inhibition of charge recombination and rapid photoinduced charge extraction across the heterointerface. As a result, the P-ZIF-67@TiO₂ electrode exhibits markedly reduced overpotentials and charge-transfer resistance for both the hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) under illumination.

Mechanistic analysis indicates that CoP sites act as the primary HER active centers following a Volmer-Heyrovsky pathway, whereas in-situ surface reconstruction of CoP into high valence CoOOH species governs OER activity. Consequently, the optimized P-ZIF-67@TiO₂ catalyst delivers a low cell voltage of 1.75 V at 10 mA cm⁻² under illumination and maintains stable operation at 100 mA cm⁻² for over 5717 h. This work demonstrates that rational phosphorization induced structural modulation, providing mechanistic insights for designing noble-metal-free photo-assisted electrocatalysts for efficient alkaline water splitting.

建立了磷修饰的ZIF-67@TiO2光辅助电催化异质结构，以阐明其在碱性水电解中的结构性能关系及其潜在的反应机理。ZIF-67在TiO2上原位生长，然后进行控制磷酸化，诱导部分框架重构，生成CoP活性位点和Ti3+相关缺陷态，同时保留MOF的CoN配位网络。这种独特的结构演变可以实现有效的电荷分离，加速界面电子转移，并提高光生载流子的利用率。电化学和光学表征表明，TiO2主要作为光生电荷供体，而磷酸化的ZIF-67则是主要的电催化成分。抑制的光致发光强度和增强的瞬态光电流响应证实了有效抑制电荷重组和快速光诱导电荷在异质界面上的提取。结果表明，P-ZIF-67@TiO2电极在光照下的析氢反应（HER）和析氧反应（OER）均表现出明显降低的过电位和电荷转移电阻。机制分析表明，在Volmer-Heyrovsky途径下，CoP位点是主要的HER活性中心，而CoP的原位表面重构为高价CoOOH物质控制着OER活性。因此，优化后的P-ZIF-67@TiO2催化剂在照明条件下可在10 mA cm - 2下提供1.75 V的低电池电压，并在100 mA cm - 2下保持5717小时的稳定运行。这项工作表明，合理的磷酸化诱导了结构调制，为设计无贵金属的光辅助电催化剂提供了有效的碱性水分解机制。

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引用次数: 0

Electrospun MOF-based porous Zn-co@carbon composite nanofibers as an efficient catalyst for oxygen reduction reactions in MFC 电纺mof基多孔Zn-co@carbon复合纳米纤维作为MFC中氧还原反应的高效催化剂

IF 4.2 3区工程技术 Q2 ELECTROCHEMISTRY

Electrochemistry Communications

Pub Date : 2026-04-01 Epub Date: 2026-01-28 DOI: 10.1016/j.elecom.2026.108115

Xiaoyan Zhang , Mingzhen Lin , Simin Tang , Jing Yang , Zilei Chen , Qinzheng Yang

Microbial fuel cell (MFC) is a sustainable technology that uses the energy of exoelectrically generated bacteria to convert waste into energy. However, the existing cathode materials have poor electrical conductivity and low electrochemical activity, which makes it difficult to improve the electricity generation efficiency of MFC, which seriously hinders the development of MFC. Metal-organic framework (MOF) materials formed by Zn and Co transition metals were grown on the surface of electrospun PAN nanofibers by in-situ growth method, and C nanofibers supported with bimetallic MOF skeleton nanoparticles were prepared by high temperature heat treatment (Zn-Co@NC). The two transition metal MOF scaffolders provide abundant defect structure and pore structure, and have excellent electrocatalytic activity. The developed Zn-Co@NC MFC cathode material significantly improves the material's electricity generation efficiency, and the power density of MFC can reach 1.37 W·m⁻². In this study, the performance of MFC cells is greatly improved, and the application potential of Zn-Co@NC as a cathode material in high-performance MFC cells is demonstrated.

微生物燃料电池（MFC）是一种利用外电产生的细菌的能量将废物转化为能量的可持续技术。然而，现有的正极材料导电性差，电化学活性低，使得MFC发电效率难以提高，严重阻碍了MFC的发展。采用原位生长法在电纺丝PAN纳米纤维表面生长由Zn和Co过渡金属形成的金属有机骨架（MOF）材料，并通过高温热处理制备由双金属MOF骨架纳米颗粒支撑的C纳米纤维（Zn-Co@NC）。两种过渡金属MOF支架具有丰富的缺陷结构和孔隙结构，具有优异的电催化活性。研制的Zn-Co@NC MFC正极材料显著提高了材料的发电效率，MFC的功率密度可达1.37 W·m−2。在本研究中，大大提高了MFC电池的性能，并展示了Zn-Co@NC作为高性能MFC电池正极材料的应用潜力。

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引用次数: 0

Electrochemical monitoring of seed aging: Application to Raphanus sativus L. aging 种子老化的电化学监测：在莴苣老化中的应用

IF 4.2 3区工程技术 Q2 ELECTROCHEMISTRY

Electrochemistry Communications

Pub Date : 2026-04-01 Epub Date: 2026-02-20 DOI: 10.1016/j.elecom.2026.108127

Antonio Doménech-Carbó , Eva García-Martínez , Elena Estrelles , Pilar Soriano , Sara Mira

An electrochemical methodology for the quantification of the degree of viability of plant seeds is proposed for Raphanus sativus L. Voltammetric data recorded on extracts of seeds macerated with ethanol, transferred onto glassy carbon electrodes in contact with acetate buffer, can be correlated with long-time germination data. As a result, quantitative monitoring of seed viability upon aging is obtained.

提出了一种测定Raphanus sativus L.植物种子活力的电化学方法。用乙醇浸渍的种子提取物，将其转移到与醋酸缓冲液接触的玻璃碳电极上，记录伏安数据，可以与长时间的萌发数据相关联。从而实现了种子衰老后活力的定量监测。

引用次数: 0

Electrochemical cutting of microslits on metallic glass using cylindrical submicron tips 利用圆柱形亚微米尖端电化学切割金属玻璃上的微缝

IF 4.2 3区工程技术 Q2 ELECTROCHEMISTRY

Electrochemistry Communications

Pub Date : 2026-03-01 Epub Date: 2026-01-15 DOI: 10.1016/j.elecom.2026.108112

Lingchao Meng , Hao Li , Zhicheng Ai , Pengxiang Yi

Metallic glass is a promising material for fabricating micro-nanostructures, yet the minimum feature size in electrochemical cutting is typically limited by the diameter of the wire electrode. To overcome this, a novel electrochemical cutting process using cylindrical submicron tips as tool electrodes is proposed. Cylindrical tips with an average diameter of 160 nm over an apical length of 5 μm were fabricated via liquid membrane electrochemical etching. Electrochemical cutting experiments were then performed on Ni-based metallic glass using the fabricated submicron tips. By decreasing the pulse-on time to 25 ns, a microslit with an average width of 2.6 μm were achieved, which is the minimum observed under these operating conditions in this paper.

金属玻璃是制造微纳米结构的一种很有前途的材料，但在电化学切割中，最小特征尺寸通常受到线电极直径的限制。为了克服这一问题，提出了一种利用圆柱形亚微米尖端作为刀具电极的新型电化学切削工艺。采用液膜电化学刻蚀法制备了平均直径为160 nm、尖端长度为5 μm的圆柱形尖端。利用所制备的亚微米尖端对镍基金属玻璃进行了电化学切割实验。通过将脉冲导通时间降低到25 ns，获得了平均宽度为2.6 μm的微缝，这是在上述工作条件下观察到的最小微缝。

引用次数: 0

Resolving nanoparticle collision reactivity via simultaneous current and fluorescence detection 通过同步电流和荧光检测解决纳米粒子碰撞反应性

IF 4.2 3区工程技术 Q2 ELECTROCHEMISTRY

Electrochemistry Communications

Pub Date : 2026-03-01 Epub Date: 2026-02-20 DOI: 10.1016/j.elecom.2026.108125

Hyeong Seok Yu, Donghoon Han

Operando analysis enables real-time monitoring of chemical processes, with spectroelectrochemical methods offering direct mechanistic insight. Here, we present an electrochemical-fluorescence approach that couples time-resolved fluorescence detection with nanoparticle collision electrochemistry. Fluorescein-functionalized silver nanoparticles (AgNPs) serve as dual probes, providing simultaneous picoampere-level current and fluorescence readouts. At low electrode potentials, weak electrostatic attraction limits oxidation, yielding few correlated current-fluorescence events. Increasing the potential enhances both collision frequency and electron transfer, producing more coincident spikes. In contrast, fluorescence spikes without current signals were suggested to be associated with 11-Mercapto-1-undecanol (MUD) functionalization that may reduce electron transfer. By correlating electrochemical and optical outputs, this strategy distinguishes reactive from nonreactive collisions. More broadly, it establishes a versatile platform for resolving single-nanoparticle reactivity beyond electrochemistry alone, with implications for catalysis, biosensing, and nanoparticle tracking in complex media.

Operando分析能够实时监测化学过程，光谱电化学方法提供直接的机制洞察。在这里，我们提出了一种电化学-荧光方法，将时间分辨荧光检测与纳米粒子碰撞电化学结合起来。荧光素功能化的银纳米颗粒（AgNPs）作为双探针，同时提供皮安级电流和荧光读数。在低电极电位下，弱静电吸引限制氧化，产生很少的相关电流-荧光事件。增加电势可以提高碰撞频率和电子转移，产生更多的一致尖峰。相反，没有电流信号的荧光峰被认为与11-巯基-1-十一醇（MUD）功能化有关，这可能会减少电子转移。通过关联电化学和光学输出，该策略区分了反应性和非反应性碰撞。更广泛地说，它建立了一个多功能平台，用于解决单纳米颗粒的反应性，而不仅仅是电化学，这对催化、生物传感和复杂介质中的纳米颗粒跟踪具有重要意义。

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引用次数: 0

Aluminum metaphosphate-derived CEI suppresses interfacial degradation of NCM811 at 4.5 V and 60 °C 偏磷酸铝衍生的CEI抑制了NCM811在4.5 V和60℃下的界面降解

IF 4.2 3区工程技术 Q2 ELECTROCHEMISTRY

Electrochemistry Communications

Pub Date : 2026-03-01 Epub Date: 2026-01-19 DOI: 10.1016/j.elecom.2026.108114

Mingming Shi , Jianyu Yu , Wenqiang Xie , Mengjie Huang , Xing Wang , Zihao Li , Chao Shen , Gauhar Mussabek , Gulmira Yar-Mukhamedova , Keyu Xie

To enhance the energy density of lithium-ion batteries, increasing the operating voltage is crucial; however, this poses challenges to electrolyte stability, particularly with catalytic cathodes such as NCM811. We propose the incorporation of aluminum metaphosphate and fluoroethylene carbonate into the electrolyte to stabilize the NCM811 interface. This modified electrolyte formulation significantly enhances cycling stability, achieving 96.5% capacity retention after 100 cycles at 0.5C under 4.5 V, as well as improves rate capability and high-temperature endurance at 60 °C for NCM811. Analytical results indicate that Al(PO₃)₃ decomposes on the cathode surface, forming a stable cathode electrolyte interphase (CEI) composed of inorganic constituents such as AlF₃ and Al₂O₃. This CEI effectively neutralizes hydrofluoric acid (HF), physically isolates the cathode from the electrolyte, reduces transition metal dissolution, minimizes Li⁺/Ni²⁺ disorder, and preserves the structural integrity of NCM811 with a CEI thickness of approximately 3.91 nm. This study provides a viable solution to interfacial degradation in high-voltage batteries by regulating the cathode interface.

提高锂离子电池的能量密度，提高工作电压至关重要；然而，这对电解质稳定性提出了挑战，特别是对于NCM811等催化阴极。我们建议在电解质中加入偏磷酸铝和氟乙烯碳酸酯来稳定NCM811界面。这种改进的电解质配方显著提高了循环稳定性，在4.5 V下0.5C下循环100次后，NCM811的容量保持率达到96.5%，并提高了NCM811的倍率能力和60°C高温耐久性。分析结果表明，Al(PO3)3在阴极表面分解，形成由AlF3和Al2O3等无机组分组成的稳定的阴极电解质界面（CEI）。该CEI有效中和氢氟酸（HF），使阴极与电解质物理隔离，减少过渡金属溶解，最大限度地减少Li+/Ni2+无序，并保持NCM811的结构完整性，CEI厚度约为3.91 nm。本研究提供了一种通过调节阴极界面来解决高压电池界面退化的可行方案。

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引用次数: 0

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