Journal of Electroanalytical Chemistry最新文献_第2页

Copper-triggered adjacent S sites activating for enhancing the hydrogen evolution reaction in acid media 铜触发邻近S位点激活，促进酸性介质中析氢反应

IF 4.1 3区化学

Journal of Electroanalytical Chemistry Pub Date : 2025-06-21 DOI: 10.1016/j.jelechem.2025.119276

Guidong Xu, Shuo Geng

引用次数: 0

Rational design of Co4S3/Ni9S8 heterostructure on nickel foam for efficient bifunctional oxygen and urea oxidation reactions Co4S3/Ni9S8异质结构在泡沫镍上的合理设计，用于高效的双功能氧和尿素氧化反应

IF 4.1 3区化学

Journal of Electroanalytical Chemistry Pub Date : 2025-06-20 DOI: 10.1016/j.jelechem.2025.119280

Chenmeng Jiang , Jincheng Liu , Lang Gan , Wei Chen , Guowei Bo , Jincheng Huang , Jing Zhao , Kang Chen , Wei Qiu , Yanjie Ren

{"title":"Rational design of Co4S3/Ni9S8 heterostructure on nickel foam for efficient bifunctional oxygen and urea oxidation reactions","authors":"Chenmeng Jiang , Jincheng Liu , Lang Gan , Wei Chen , Guowei Bo , Jincheng Huang , Jing Zhao , Kang Chen , Wei Qiu , Yanjie Ren","doi":"10.1016/j.jelechem.2025.119280","DOIUrl":"10.1016/j.jelechem.2025.119280","url":null,"abstract":"<div><div>The development of bifunctional catalysts capable of adapting to complex reaction environments in real time for OER and UOR poses a major challenge during the electrolysis of industrial wastewater, where the concentration of urea is constantly changing. In this work, a series of heterostructured electrocatalysts are synthesized on nickel foam through controlled hydrothermal sulfidation, achieving synergistic enhancement in both oxygen evolution reaction (OER) and UOR. The optimized catalyst, Co4S3/Ni9S8/NF, delivers a current density of 100 mA cm−2 at an ultralow potential of 1.571 V for OER and 1.328 V for UOR, with corresponding Tafel slope of 53.74 mV dec−1 and 3.91 mV dec−1, respectively. Furthermore, the Co4S3/Ni9S8/NF exhibits robust durability across 36 h of continuous operation in a 0.2 M Urea-containing alkaline electrolyte. The excellent activity of Co4S3/Ni9S8/NF can be attributed to its heterostructure, which features vertically growing nanoparticle clusters that enhance electrolyte permeability and active site exposure, as well as interfacial charge redistribution at the heterojunction, thereby optimizing the *OOH adsorption for OER and the urea dehydrogenation kinetics for UOR.</div></div>","PeriodicalId":355,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"992 ","pages":"Article 119280"},"PeriodicalIF":4.1,"publicationDate":"2025-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144471249","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 performance of Fe2O3/MXene based supercapacitors with redox-electrolyte strategy 氧化还原-电解质策略增强Fe2O3/MXene基超级电容器性能

IF 4.1 3区化学

Journal of Electroanalytical Chemistry Pub Date : 2025-06-18 DOI: 10.1016/j.jelechem.2025.119278

Jing Xu , Xinye Xu , Xiaoqing Bin, Yingyi Liao, Xuedong He, Wenxiu Que

{"title":"Enhanced performance of Fe2O3/MXene based supercapacitors with redox-electrolyte strategy","authors":"Jing Xu , Xinye Xu , Xiaoqing Bin, Yingyi Liao, Xuedong He, Wenxiu Que","doi":"10.1016/j.jelechem.2025.119278","DOIUrl":"10.1016/j.jelechem.2025.119278","url":null,"abstract":"<div><div>MXene-based supercapacitors are regarded as advanced energy storage devices owing to their high power density and extended cycle life. However, re-stacking of MXene significantly restricts its electrochemical performance while limited capacitance degrades the energy density. To address these limitations, we propose a dual-optimization strategy which integrates Fe2O3/MXene composite electrode design with redox-active electrolyte engineering, and thus achieves a high-performance Fe2O3/MXene-based asymmetric supercapacitor. Fe2O3 nanoparticles anchored on MXene nanosheets via filtration and annealing mitigate re-stacking and provide redox-active sites, while their interfacial charge synergy with a Cu2+-rich electrolyte accelerates Cu2+/Cu+ redox kinetics. The optimized composite electrode achieves a specific capacitance of 643.8 F g−1 at 2 A g−1 in 3 M H₂SO₄ + 30 mM CuSO₄ redox electrolyte. Moreover, the assembled asymmetric supercapacitor exhibits a high energy density of 20.1 Wh kg−1 at a power density of 1292.5 W kg−1, outperforming most reported MXene-based devices. This work demonstrates a feasible strategy for designing high-performance supercapacitors with hybrid redox electrolytes.</div></div>","PeriodicalId":355,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"994 ","pages":"Article 119278"},"PeriodicalIF":4.1,"publicationDate":"2025-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144338698","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

Investigating sulfur precursor effects on wet-chemically synthesized CuCo bimetallic sulfides for supercapacitor applications via electrochemical measurement and thermodynamic and DFT calculations 通过电化学测量、热力学和DFT计算，研究了硫前驱体对湿法合成CuCo双金属硫化物的影响

IF 4.1 3区化学

Journal of Electroanalytical Chemistry Pub Date : 2025-06-18 DOI: 10.1016/j.jelechem.2025.119277

S.A. Sanei , S.M. Masoudpanah , M. Nasrollahpour , M. Vafaee

{"title":"Investigating sulfur precursor effects on wet-chemically synthesized CuCo bimetallic sulfides for supercapacitor applications via electrochemical measurement and thermodynamic and DFT calculations","authors":"S.A. Sanei , S.M. Masoudpanah , M. Nasrollahpour , M. Vafaee","doi":"10.1016/j.jelechem.2025.119277","DOIUrl":"10.1016/j.jelechem.2025.119277","url":null,"abstract":"<div><div>In this research, an in-situ two-step solvothermal technique was used for the direct growth of thiospinel CuCo2S4 material and CoS2/CuS composite material on Ni foam substrate. The type of electroactive materials was adjusted using two distinct sulfur sources: sodium thiosulfate pentahydrate (Na2S2O3.5H2O) and sodium sulfide nonahydrate (Na2S.9H2O) at an equal concentration of sulfur. The phase and microstructure were characterized by X-ray diffractometry, X-ray photoelectron spectroscopy, and scanning electron microscopy techniques. The electrochemical behavior was studied using cyclic voltammetry, galvanostatic charge-discharge, and electrochemical impedance spectroscopy techniques in a 3 M KOH aqueous electrolyte. The Na2S.9H2O source resulted in the synthesis of single-phase CuCo2S4 material, while the composite CoS2/CuS material was obtained by the sulfur precursor of Na2S2O3.5H2O. In comparison with CuCo2S4 material, the CoS2/CuS electrode showed a higher electrochemical performance with a specific capacitance of 2195 F g−1 at 1 Ag−1 due to its finer morphology. The assembled asymmetric supercapacitor with CoS2/CuS as positive electrode and active carbon as negative electrode harvested an energy density of 46.6 Wh kg−1 at a power density of 750 W kg−1 in a voltage window of 1.5 V. Computational simulations based on density functional theory (DFT) validated the experimental findings, revealing that the CuS/CoS2 material exhibited significant potential for electrochemical applications in the renewable energy field.</div></div>","PeriodicalId":355,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"992 ","pages":"Article 119277"},"PeriodicalIF":4.1,"publicationDate":"2025-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144490463","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

Needle-like nanostructured Mn3O4@MnO2/C composites with boosted electrochemical performance as high-performance supercapacitor electrodes 具有提高电化学性能的针状纳米结构Mn3O4@MnO2/C复合材料作为高性能超级电容器电极

IF 4.1 3区化学

Journal of Electroanalytical Chemistry Pub Date : 2025-06-18 DOI: 10.1016/j.jelechem.2025.119279

Hao Wang , Yongqi Wang , Jia Sun , Guoyong Xiao , Zhizhi Hu , Yunhua Lu

{"title":"Needle-like nanostructured Mn3O4@MnO2/C composites with boosted electrochemical performance as high-performance supercapacitor electrodes","authors":"Hao Wang , Yongqi Wang , Jia Sun , Guoyong Xiao , Zhizhi Hu , Yunhua Lu","doi":"10.1016/j.jelechem.2025.119279","DOIUrl":"10.1016/j.jelechem.2025.119279","url":null,"abstract":"<div><div>In recent years, manganese oxide/carbon composites with excellent electrochemical properties have attracted widespread interest as a result of synergistic effect. In this work, a kind of needle-like Mn3O4@MnO2/C composite electrode is successfully developed. First, the MnO2/C composites are prepared by using the preferred polyimide/20 %KMnO4 composites as precursors, followed by carbonization at 800 °C. Then, the needle-like Mn3O4@MnO2/C composites are obtained after hydrothermal reaction of the ground MnO2/C particles and KMnO4. The influence of weight ratio of KMnO4 to MnO2/C on the microstructures and electrochemical properties of the final composites is investigated. The three-electrode test results reveal that the Mn3O4@MnO2/C-(3:1) shows a capacitance value of 717.9 F g−1 (199.4 mAh g−1), superior to the specific capacitance of MnO2/C about 460.9 F g−1 (128.0 mAh g−1) at 0.5 A g−1. After the Mn3O4@MnO2/C-(3:1) is assembled into symmetric supercapacitors (SC), the SC exhibits an energy density of about 21.0 Wh kg−1, higher than the MnO2/C with 11.4 Wh kg−1 at 250 W kg−1. Over 10,000 charging-discharging cycles, the final specific capacitance can maintain 94 % of the original capacitance, suggesting excellent long-term cycling stability. Thus, the present study reports a feasible method to prepare Mn3O4@MnO2/C composites with superior electrochemical performance as SC electrodes.</div></div>","PeriodicalId":355,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"992 ","pages":"Article 119279"},"PeriodicalIF":4.1,"publicationDate":"2025-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144490461","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

Synergistic enhancement of sodium-ion storage performance in Na3V2(PO4)3/C cathode materials via Eu3+ doping and carbon coating Eu3+掺杂与碳包覆协同增强Na3V2(PO4)3/C正极材料的钠离子存储性能

IF 4.1 3区化学

Journal of Electroanalytical Chemistry Pub Date : 2025-06-18 DOI: 10.1016/j.jelechem.2025.119275

Jun Yi , Zuming He , Kai Lin , Long Shen , Yongmei Xia , Bin Tang , Guihua Chen

{"title":"Synergistic enhancement of sodium-ion storage performance in Na3V2(PO4)3/C cathode materials via Eu3+ doping and carbon coating","authors":"Jun Yi , Zuming He , Kai Lin , Long Shen , Yongmei Xia , Bin Tang , Guihua Chen","doi":"10.1016/j.jelechem.2025.119275","DOIUrl":"10.1016/j.jelechem.2025.119275","url":null,"abstract":"<div><div>In recent years, Na3V2(PO4)3(NVP) has emerged as a promising cathode material for sodium-ion batteries (SIBs) due to its stable NASICON-type framework, high theoretical capacity (∼117.6 mAhg−1), and suitable operating voltage (∼3.4 V vs. Na+/Na). However, the practical application of NVP is hindered by its intrinsically low electronic conductivity, which significantly limits its electrochemical performance. This study systematically investigates the effects of Eu3+ doping on the crystal structure, electronic conductivity, and electrochemical properties of NVP. The results findings demonstrate that optimal Eu3+ doping effectively expands sodium-ion diffusion pathways while stabilizing the NASICON framework. Structural analyses (XRD, XPS) confirmed successful Eu3+ incorporation without altering the host framework. Electrochemically, the optimized 0.03Eu-NVP/C composite delivered a reversible capacity of 109.94 mAhg−1 at 0.1C, outstanding cycling stability (93.69 % retention after 600 cycles at 1C), and remarkable long-term performance (92.15 % retention after 3000 cycles at 20C). Kinetic studies revealed enhanced Na+ diffusion coefficients and pseudocapacitive contributions, underscoring the efficacy of this dual-modification approach for high-performance sodium-ion batteries. Furthermore, the introduction of a carbon-coating layer substantially enhances the overall electronic conductivity of the material. The results conclusively demonstrate that Eu3+-doped Na3V2(PO4)3/C represents a highly promising cathode material for high-performance sodium-ion batteries.</div></div>","PeriodicalId":355,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"994 ","pages":"Article 119275"},"PeriodicalIF":4.1,"publicationDate":"2025-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144329746","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

Constructing Co9S8/MoS2 heterostructures by one-step pyrolysis deep eutectic solvents enhancing lithium-ion storage 一步热解深共晶溶剂构建Co9S8/MoS2异质结构增强锂离子存储

IF 4.1 3区化学

Journal of Electroanalytical Chemistry Pub Date : 2025-06-18 DOI: 10.1016/j.jelechem.2025.119271

Pengfei Zhang , Henghao You , Chao Wang , Zhiqiang Liu , Yehong Zhang , Jixue Shen , Hui Li

{"title":"Constructing Co9S8/MoS2 heterostructures by one-step pyrolysis deep eutectic solvents enhancing lithium-ion storage","authors":"Pengfei Zhang , Henghao You , Chao Wang , Zhiqiang Liu , Yehong Zhang , Jixue Shen , Hui Li","doi":"10.1016/j.jelechem.2025.119271","DOIUrl":"10.1016/j.jelechem.2025.119271","url":null,"abstract":"<div><div>Co9S8 emerges as a promising anode material for lithium-ion batteries (LIBs) due to its high theoretical capacity and eco-friendliness. However, its practical application is hindered by poor electrical conductivity, severe volume expansion, and rapid capacity decay. This study hypothesizes that constructing Co9S8/MoS2 heterostructures within a carbon matrix via a simplified synthesis route can synergistically enhance charge transfer kinetics and structural stability. Herein, a one-step pyrolysis strategy utilizing a deep eutectic solvent (DES) is introduced to fabricate Co9S8/MoS2@C heterostructures, effectively streamlining the complex heterojunction preparation process. The optimized anode delivers exceptional cycling stability, retaining a high reversible capacity of 1022 mA h g−1 after 550 cycles at 0.5 A g−1, alongside improved rate capability. The integrated heterostructure design and carbon confinement mitigate volume changes and facilitate rapid ion/electron transport, as validated by electrochemical and structural analyses. This work demonstrates a scalable synthesis approach for advanced heterostructured anodes, providing insights into overcoming the limitations of conversion-type materials for high-performance LIBs.</div></div>","PeriodicalId":355,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"994 ","pages":"Article 119271"},"PeriodicalIF":4.1,"publicationDate":"2025-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144321395","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

Computing the inverse Butler–Volmer relationship 计算逆巴特勒-沃尔默关系

IF 4.1 3区化学

Journal of Electroanalytical Chemistry Pub Date : 2025-06-16 DOI: 10.1016/j.jelechem.2025.119206

L.K. Bieniasz

{"title":"Computing the inverse Butler–Volmer relationship","authors":"L.K. Bieniasz","doi":"10.1016/j.jelechem.2025.119206","DOIUrl":"10.1016/j.jelechem.2025.119206","url":null,"abstract":"<div><div>A detailed discussion is presented, of the problem of computing the inverse Butler-Volmer (electrode potential vs. current) relationship efficiently and with a high accuracy. A number of limiting cases of this problem is identified, and approximations valid for these cases are deduced. A hybrid algorithm is constructed, that combines the various approximations and improves them by Newton iterations. The algorithm is implemented in C++, employing extended precision variables. It is found that the modulus of the relative error of the calculated electrode potential is predominantly close to ca. <math><mrow><mn>1</mn><msup><mrow><mn>0</mn></mrow><mrow><mo>−</mo><mn>18</mn></mrow></msup></mrow></math> and locally increases to ca. <math><mrow><mn>1</mn><msup><mrow><mn>0</mn></mrow><mrow><mo>−</mo><mn>15</mn></mrow></msup></mrow></math>. However, there are also well defined and unavoidable (albeit rather unlikely from the physical point of view) special situations in which the relative error may approach 100%, independently of the numerical algorithm used. The C++ code elaborated is made available. The code can be used for simulations of controlled current experiments, and for the analysis of diverse experimental data in electroanalytical and electrochemical engineering studies. An example application of the code, to the calculation of chronopotentiograms for a quasi-reversible charge transfer at a planar electrode, is also presented.</div></div>","PeriodicalId":355,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"994 ","pages":"Article 119206"},"PeriodicalIF":4.1,"publicationDate":"2025-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144321388","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

Nanoconfinement-enchanced electrochemiluminescence based on a Ru(bpy)32+-loaded mesoporous silica nanoparticles for ribavirin detection 基于负载Ru(bpy)32+介孔二氧化硅纳米颗粒的纳米约束增强电化学发光检测利巴韦林

IF 4.1 3区化学

Journal of Electroanalytical Chemistry Pub Date : 2025-06-14 DOI: 10.1016/j.jelechem.2025.119274

Ziqi Wang, Yahui Ji, Nana You, Xiaoping Hu, Fangxin Du, Gen Liu

{"title":"Nanoconfinement-enchanced electrochemiluminescence based on a Ru(bpy)32+-loaded mesoporous silica nanoparticles for ribavirin detection","authors":"Ziqi Wang, Yahui Ji, Nana You, Xiaoping Hu, Fangxin Du, Gen Liu","doi":"10.1016/j.jelechem.2025.119274","DOIUrl":"10.1016/j.jelechem.2025.119274","url":null,"abstract":"<div><div>Testing ribavirin (RBV) is essential to promote its appropriate clinical use, mitigate resistance development, reduce adverse effects, and safeguard public health. Electrochemiluminescence (ECL) outperforms conventional methods in RBV detection, offering superior sensitivity and reduced background noise. In this work, ECL micro-reactors were prepared by incorporating Ru(bpy)32+ into a mesoporous silica matrix with two-dimensional hexagonal structure (SBA-15). In this configuration, tripropylamine (TPA) was employed as a co-reactant, which interacted with Ru(bpy)32+ to enhance the ECL signal. The quenching effect of ribavirin (RBV) on the Ru(bpy)32+-TPA system was confirmed through its significant suppression of ECL emission. A glassy carbon electrode (GCE) modified with SBA-15 loaded with Ru(bpy)32+ (SBA-15@Ru) was fabricated as a novel ECL sensor. This sensor enabled the detection of RBV over a wide concentration range 1.0 × 10−9 mol·L−1 to 1.0 × 10−5 mol·L−1, achieving a detection limit (LOD) of 3.33 × 10−10 mol·L−1. Additionally, the sensor exhibited outstanding stability and selectivity and was successfully applied for accurate quantification of RBV in pharmaceutical samples.</div></div>","PeriodicalId":355,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"994 ","pages":"Article 119274"},"PeriodicalIF":4.1,"publicationDate":"2025-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144298495","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

Fabrication of Pt nanoparticles encapsulated by N, P co-doped carbon via solution plasma for the oxygen reduction reaction 用溶液等离子体法制备N， P共掺杂碳包覆的Pt纳米颗粒用于氧还原反应

IF 4.1 3区化学

Journal of Electroanalytical Chemistry Pub Date : 2025-06-14 DOI: 10.1016/j.jelechem.2025.119273

Junzo Ukai , Pengfei Wang , Sangwoo Chae , Garbis Atam Akceoglu , Nutthira Pakkang , Yasuyuki Sawada , Nagahiro Saito

{"title":"Fabrication of Pt nanoparticles encapsulated by N, P co-doped carbon via solution plasma for the oxygen reduction reaction","authors":"Junzo Ukai , Pengfei Wang , Sangwoo Chae , Garbis Atam Akceoglu , Nutthira Pakkang , Yasuyuki Sawada , Nagahiro Saito","doi":"10.1016/j.jelechem.2025.119273","DOIUrl":"10.1016/j.jelechem.2025.119273","url":null,"abstract":"<div><div>The oxygen reduction reaction (ORR) remains a performance-limiting step in fuel cells due to sluggish kinetics and the high cost of platinum-based catalysts. In this study, we report the synthesis of nitrogen and phosphorus co-doped carbon (NPC) encapsulating Pt nanoparticles via a solution plasma process, aiming to reduce Pt usage while enhancing catalyst activity and durability. Structural characterization confirmed a core–shell morphology, with Pt cores uniformly embedded in a conductive, heteroatom-doped carbon shell. X-ray photoelectron spectroscopy revealed active nitrogen species (pyridinic and graphitic N) and P-doping contributing to electron redistribution and active site formation. Electrochemical tests in alkaline media demonstrated that the resulting NPC@Pt catalyst exhibits superior ORR activity, with a four-electron transfer pathway, higher limiting current density, and significantly improved long-term stability compared to commercial Pt/C. These findings highlight the synergy of heteroatom doping and core–shell structuring in advancing cost-effective, durable ORR electrocatalysts for alkaline fuel cells.</div></div>","PeriodicalId":355,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"994 ","pages":"Article 119273"},"PeriodicalIF":4.1,"publicationDate":"2025-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144329745","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