Electrocatalysis最新文献_第3页

Correction to: Tailored Pt–rGO Catalyst with Dual Heteroatom Doping: A Synergistic Leap in HER and ORR Electrocatalysis 修正：定制的Pt-rGO催化剂与双杂原子掺杂：在HER和ORR电催化的协同飞跃

IF 2.8 4区化学

Electrocatalysis Pub Date : 2026-01-02 DOI: 10.1007/s12678-025-01002-z

C Renugadevi, Abhay Pratap Singh, L Cindrella

引用次数: 0

Fe-doped (MoFeNi)3S2 Bifunctional Electrocatalyst with Halide Ion Corrosion Resistance for Efficient Brackish Water Electrolysis 含铁（MoFeNi）3S2抗卤化物离子腐蚀双功能电催化剂用于高效半咸淡水电解

IF 2.8 4区化学

Electrocatalysis Pub Date : 2026-01-02 DOI: 10.1007/s12678-025-01004-x

Hanwen Zhang, Pengjie Xiao, Yuhan Zhang, Peinan Guo, Yao Luo, Rui Liu

{"title":"Fe-doped (MoFeNi)3S2 Bifunctional Electrocatalyst with Halide Ion Corrosion Resistance for Efficient Brackish Water Electrolysis","authors":"Hanwen Zhang, Pengjie Xiao, Yuhan Zhang, Peinan Guo, Yao Luo, Rui Liu","doi":"10.1007/s12678-025-01004-x","DOIUrl":"10.1007/s12678-025-01004-x","url":null,"abstract":"<div><p>Brackish water is an attractive feedstock for large-scale hydrogen production, but the high concentration of Cl<sup>−</sup> ions causes severe electrode corrosion and efficiency loss. Here, Fe-doped molybdenum sulfide was grown on nickel foam by a hydrothermal route to address this issue ((MoFeNi)<sub>3</sub>S<sub>2</sub>). The introduction of Fe strengthens the bonding within the sulfide framework, which helps to stabilize the structure and reduce the damage caused by halogen ions. In parallel, Fe also tunes the electronic state of the active sites, leading to higher catalytic activity. In 1.0 mol L<sup>− 1</sup> KOH + 0.5 mol L<sup>− 1</sup> NaCl electrolyte, the catalyst delivers bifunctional activity for both the hydrogen evolution reaction (HER) and the oxygen evolution reaction (OER), achieving 10 mA cm<sup>− 2</sup> at an overpotential of 225 mV (OER)/53 mV (HER), and retaining OER stability for 384 h at 1000 mA cm<sup>− 2</sup>. A full alkaline electrolyzer with (MoFeNi)<sub>3</sub>S<sub>2</sub> electrodes operates continuously for over 264 h, highlighting its promise for overall water splitting in saline environments. This research provides a promising theoretical approach for the development of corrosion-resistant catalysts that can efficiently and stably produce hydrogen through alkaline saline water electrolysis.</p></div>","PeriodicalId":535,"journal":{"name":"Electrocatalysis","volume":"17 2","pages":"282 - 290"},"PeriodicalIF":2.8,"publicationDate":"2026-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147371870","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Surface Modification of Carbon Cloth Anodes To Boost Microbial Fuel Cell Performance in Distillery Wastewater Processing 碳布阳极表面改性提高微生物燃料电池在蒸馏废水处理中的性能

IF 2.8 4区化学

Electrocatalysis Pub Date : 2025-12-22 DOI: 10.1007/s12678-025-00998-8

Bhavi Pandya, Latesh Chaudhari

{"title":"Surface Modification of Carbon Cloth Anodes To Boost Microbial Fuel Cell Performance in Distillery Wastewater Processing","authors":"Bhavi Pandya, Latesh Chaudhari","doi":"10.1007/s12678-025-00998-8","DOIUrl":"10.1007/s12678-025-00998-8","url":null,"abstract":"<div><p>The study aimed to enhance the performance of microbial fuel cells (MFCs) by employing carbon cloth anodes modified with ferric oxide (Fe<sub>2</sub>O<sub>3</sub>) and hydrogen peroxide (H<sub>2</sub>O<sub>2</sub>) for the treatment of distillery wastewater. Two double-chambered MFCs were developed: MFC-1 utilized standard carbon cloth, whereas MFC-2 featured carbon cloth anodes treated with Fe<sub>2</sub>O<sub>3</sub>/H<sub>2</sub>O<sub>2</sub>. Fourier transform infrared spectroscopy (FTIR) analysis revealed the presence of oxygen-rich functional groups on the modified carbon cloth, which facilitated the attachment of exoelectrogenic bacteria. Scanning electron microscopy (SEM) images showed a rougher surface on the modified carbon cloth, thereby increasing the area available for microbial colonization. MFC-2 achieved a higher maximum open-circuit voltage of 0.811 V, compared to 0.454 V for MFC-1. Polarization curves demonstrated peak power densities of 44.42 mW/m<sup>2</sup> for MFC-1 and 64.40 mW/m<sup>2</sup> for MFC-2. Electrochemical impedance spectroscopy (EIS) indicated a smaller Nyquist semicircle for MFC-2, suggesting reduced charge transfer resistance. SEM analysis of the biofilm on the anodes confirmed improved microbial adhesion on the modified carbon cloth. The research highlights the effectiveness of Fe<sub>2</sub>O<sub>3</sub>/H<sub>2</sub>O<sub>2</sub>-modified carbon cloth anodes in boosting the performance of microbial fuel cells (MFCs) for distillery wastewater treatment. This finding underscores the critical role of electrode surface modifications in enhancing microbial attachment and facilitating efficient electron transfer.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":535,"journal":{"name":"Electrocatalysis","volume":"17 2","pages":"273 - 281"},"PeriodicalIF":2.8,"publicationDate":"2025-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147371865","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Development of a PVDF-CoFe2O4 Electrocatalyst Modified Pencil Graphite Electrode for Nanomolar-level Detection of 4-Aminophenol in Tablets Contaminated Pharmaceutical Waste-water Samples PVDF-CoFe2O4电催化剂修饰铅笔石墨电极纳米级检测制药废水中4-氨基酚污染的研究

IF 2.8 4区化学

Electrocatalysis Pub Date : 2025-12-19 DOI: 10.1007/s12678-025-00999-7

Varshini Shivakumar, Kumara Swamy Ningappa, Bhuvan Lokesh Marenahalli, Vedhavathi Hattna Shivarudraiah, Mahesh Basavaraju, Chamaraja Nelligere Arkeswaraiah, Sanjay Ballur Prasanna, Yu-Jui Fan

{"title":"Development of a PVDF-CoFe2O4 Electrocatalyst Modified Pencil Graphite Electrode for Nanomolar-level Detection of 4-Aminophenol in Tablets Contaminated Pharmaceutical Waste-water Samples","authors":"Varshini Shivakumar, Kumara Swamy Ningappa, Bhuvan Lokesh Marenahalli, Vedhavathi Hattna Shivarudraiah, Mahesh Basavaraju, Chamaraja Nelligere Arkeswaraiah, Sanjay Ballur Prasanna, Yu-Jui Fan","doi":"10.1007/s12678-025-00999-7","DOIUrl":"10.1007/s12678-025-00999-7","url":null,"abstract":"<div><p>4-Aminophenol (4-AP), widely used in pharmaceuticals, dyes, and photographic chemicals, poses serious environmental and health risks due to its toxicity and persistence. Conventional detection methods such as chromatography and spectrophotometry are reliable but costly, time-consuming, and require complex preparation. Electrochemical sensing provides a faster and more sensitive alternative. Nanocomposite-modified electrodes can further enhance sensitivity, with polyvinylidene fluoride (PVDF) offering excellent conductivity and cobalt ferrite (CoFe<sub>2</sub>O<sub>4</sub>) contributing redox activity and stability. CoFe<sub>2</sub>O<sub>4</sub> nanoparticles with a cubic spinel structure were synthesized by a sol–gel method and blended with PVDF (1:10 w/w) to form a nanocomposite. This was drop-cast onto a pencil graphite electrode (PGE) to prepare PGE/PVDF-CoFe<sub>2</sub>O<sub>4</sub>. The material was characterized by XRD, FTIR, and FESEM, while electrochemical performance was assessed using cyclic voltammetry (CV) and differential pulse voltammetry (DPV). The PGE/PVDF-CoFe<sub>2</sub>O<sub>4</sub> electrode showed strong electrocatalytic activity for 4-AP reduction, achieving a linear detection range of 5–200 nM, a detection limit of 0.33 nM, and high sensitivity (23.03 μA·nM<sup>−1</sup>·cm<sup>−2</sup>). Real wastewater analysis confirmed excellent recovery and reliability. The synergistic effects of PVDF conductivity and CoFe<sub>2</sub>O<sub>4</sub> electrocatalysis enabled efficient electron transfer, establishing the nanocomposite as a promising transducer for environmental and pharmaceutical monitoring.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":535,"journal":{"name":"Electrocatalysis","volume":"17 2","pages":"260 - 272"},"PeriodicalIF":2.8,"publicationDate":"2025-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147371869","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

High-Efficiency Aqueous Zinc-ion Capacitors Based On Mofs/cofs-derived Nanomaterials: Challenges and Future Prospects 基于Mofs/cofs衍生纳米材料的高效水性锌离子电容器：挑战与未来展望

IF 2.8 4区化学

Electrocatalysis Pub Date : 2025-12-19 DOI: 10.1007/s12678-025-00997-9

Xuexue Pan, Yi Zhao, Huiling Zhou, Jianhui Zhang

{"title":"High-Efficiency Aqueous Zinc-ion Capacitors Based On Mofs/cofs-derived Nanomaterials: Challenges and Future Prospects","authors":"Xuexue Pan, Yi Zhao, Huiling Zhou, Jianhui Zhang","doi":"10.1007/s12678-025-00997-9","DOIUrl":"10.1007/s12678-025-00997-9","url":null,"abstract":"<div><p>Aqueous zinc-ion capacitors have garnered significant attention recently due to their safety, environmental benefits, and high capacity. However, its practical application still faces many challenges. Metal–organic frameworks (MOFs) and Covalent organic frameworks (COFs)-derived nanomaterials have demonstrated outstanding potential as electrode materials due to their unique structure and adjustable properties. Here, the current application status of MOFs/COFs-derived nanomaterials in high-efficiency aqueous ZICs is reviewed and the structure and properties of these materials, as well as their synthesis methods and advantages in capacitors are explored. The key factors influencing the properties of aqueous ZICs, including material structure, morphology, electrochemical characteristics, stability, and cycle life, are further examined. Although there are current challenges in the controllability of material preparation, large-scale production, electrolyte and electrode interface, the future development of aqueous ZICs is promising through new material design and synthesis strategies, performance optimization, and interdisciplinary research. This paper examines the future research directions and application potential of MOFs/COFs-derived nanomaterials in waterborne ZICs.</p></div>","PeriodicalId":535,"journal":{"name":"Electrocatalysis","volume":"17 2","pages":"223 - 259"},"PeriodicalIF":2.8,"publicationDate":"2025-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s12678-025-00997-9.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147371863","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Investigation of Corrosion Resistance of 316 Austenitic Stainless Steel in HCl Solution via Nontoxic Organic Compounds: Surface Analysis and Electrochemical, Thermodynamic and Theoretical Studies 316奥氏体不锈钢在HCl溶液中的耐腐蚀性能研究：表面分析及电化学、热力学和理论研究

IF 2.8 4区化学

Electrocatalysis Pub Date : 2025-12-05 DOI: 10.1007/s12678-025-00987-x

Mustapha Alahiane, Youssef Ait Albrimi, Elmahjoub Laouini, Rachid Idouhli, Khalid Abbiche, Yassine Riadi, Talal A. Aljohani, Mohammed H. Geesi, Mohamed Hamdani

{"title":"Investigation of Corrosion Resistance of 316 Austenitic Stainless Steel in HCl Solution via Nontoxic Organic Compounds: Surface Analysis and Electrochemical, Thermodynamic and Theoretical Studies","authors":"Mustapha Alahiane, Youssef Ait Albrimi, Elmahjoub Laouini, Rachid Idouhli, Khalid Abbiche, Yassine Riadi, Talal A. Aljohani, Mohammed H. Geesi, Mohamed Hamdani","doi":"10.1007/s12678-025-00987-x","DOIUrl":"10.1007/s12678-025-00987-x","url":null,"abstract":"<div><p>The efficiency of the anticorrosive ability of benzoic acid (M1), salicylic acid (M2), gallic acid (M3), and phthalic acid (M4) was evaluated using AISI 316 stainless steel (SS) and 0.5 M HCl via the potentiodynamic polarisation method, electrochemical impedance spectroscopy, contact angle, and scanning electron microscopy analysis. It was found that while inhibition efficiency increased with increasing concentrations, M4 was a better inhibitor than M1, M2, and M3 under the same concentrations when temperature was increased. The results from different analytic techniques were consistent. The tested inhibitors were adsorbed on the SS surface following the Langmuir isotherm. The difference in anticorrosive effectiveness may be due to the inhibitors’ number of –COOH and –OH groups. Quantum chemical parameters were calculated by the density functional theory at the level of the B3LYP theory with bases 6-31G(d,p) and 6–31 + + G(2d,p). Various parameters were calculated, including the highest occupied (<i>E</i><sub>HOMO</sub>) and lowest unoccupied (E<sub>LUMO</sub>) molecular orbital energies, electronegativity (<i>χ</i>), energy gap (∆<i>E</i>), chemical hardness (<i>η</i>), softness (<i>σ</i>), electronegativity (<i>χ</i>), electrophilicity (<i>ω</i>), and nucleophilicity (<i>ε</i>), to show the anticorrosive properties of M1, M2, M3, and M4.\u0000</p><h3>Graphical Abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":535,"journal":{"name":"Electrocatalysis","volume":"17 1","pages":"198 - 221"},"PeriodicalIF":2.8,"publicationDate":"2025-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146016123","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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 Combined Numerical and Experimental Study of Mn2O3-Mn3O4/CND Supercapacitor Electrodes Synthesized via a Green Chemistry Approach 绿色化学合成Mn2O3-Mn3O4/CND超级电容器电极的数值与实验相结合研究

IF 2.8 4区化学

Electrocatalysis Pub Date : 2025-12-02 DOI: 10.1007/s12678-025-00996-w

Nadjah Sobti, Samiha Chaguetmi, Khouloud Jlassi, Assia Azizi, Hana Bourahla, Lynda Saci, Sophie Nowak, Souad Ammar

{"title":"A Combined Numerical and Experimental Study of Mn2O3-Mn3O4/CND Supercapacitor Electrodes Synthesized via a Green Chemistry Approach","authors":"Nadjah Sobti, Samiha Chaguetmi, Khouloud Jlassi, Assia Azizi, Hana Bourahla, Lynda Saci, Sophie Nowak, Souad Ammar","doi":"10.1007/s12678-025-00996-w","DOIUrl":"10.1007/s12678-025-00996-w","url":null,"abstract":"<div><p>In this study, a simple and low-cost green chemistry process was employed to synthesize mixed Bixbyite (Mn<sub>2</sub>O<sub>3</sub>) and Hausmannite (Mn<sub>3</sub>O<sub>4</sub>) nanopowder. It consists of a wet chemistry method using Olive Leaf Extract (OLE), whom bioactive constituting compounds, including polyphenols, act as complexing and reducing agents, promoting oxide nucleation, and followed by moderate annealing at 500 °C, allowing co-crystal growth. The nanopowder was then deposited on a Conradty Nürnberg Noris D-type carbon (CND) substrate, forming a homogeneous well-adhered layer, and the electrochemical performance of the resulting electrode was evaluated toward supercapacitor application. Galvanostatic charge/discharge (GCD) and cyclic voltammetry (CV) analyses revealed outstanding capacitive performance. Specifically, high specific capacitance values of 552.4 F g<sup>− 1</sup> (from CV at a scan rate of 5 mV s<sup>− 1</sup>) and 512.8 F g<sup>− 1</sup> (from GCD at a current density of 4 A g<sup>− 1</sup>) were measured. A good rate capability and stable cycling behavior with 91.84% retention were also observed. These results establish a clear correlation between the enhanced supercapacitive properties of the engineered electrode and its superior interfacial characteristics. Python-based multiphysics numerical modeling validated these issues, providing deeper insights onto their hybrid charge storage mechanism.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div><div><p>A combined numerical simulation and experimental study of Mn2O3-Mn3O4/CND supercapacitor electrodes </p></div></div></figure></div></div>","PeriodicalId":535,"journal":{"name":"Electrocatalysis","volume":"17 1","pages":"173 - 184"},"PeriodicalIF":2.8,"publicationDate":"2025-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146016127","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Electrochemical Sensing of Trinitrotoluene Explosive Using a Porphyrin-Based Nanocomposite 卟啉基纳米复合材料对三硝基甲苯炸药的电化学传感

IF 2.8 4区化学

Electrocatalysis Pub Date : 2025-12-02 DOI: 10.1007/s12678-025-00992-0

Hung Manh Khong, Thu Hong Nguyen Thi, Hai Thi Nguyen, Hoai Phuong Nguyen Thi, Trung-Dung Dang, Duong Duc La

{"title":"Electrochemical Sensing of Trinitrotoluene Explosive Using a Porphyrin-Based Nanocomposite","authors":"Hung Manh Khong, Thu Hong Nguyen Thi, Hai Thi Nguyen, Hoai Phuong Nguyen Thi, Trung-Dung Dang, Duong Duc La","doi":"10.1007/s12678-025-00992-0","DOIUrl":"10.1007/s12678-025-00992-0","url":null,"abstract":"<div><p>The rapid and selective detection of 2,4,6-trinitrotoluene (TNT) is critical for environmental monitoring and national security. In this study, a novel electrochemical sensor based on a self-assembled nanocomposite comprising zero-valent iron (Fe), graphene nanoplatelets (GNPs), and tetra(4-carboxyphenyl) porphyrin (TCPP) was developed for TNT detection. The Fe/GNPs@TCPP nanocomposite exhibited a porous, fibrous structure with enhanced conductivity, high surface area, and strong affinity for nitroaromatic compounds. Structural and chemical characterizations confirmed the successful integration of the components. Electrochemical analysis demonstrated excellent sensitivity and selectivity for TNT, with a clear and reproducible response in both cyclic voltammetry (CV) and differential pulse voltammetry (DPV). The optimized composite displayed a low detection limit of 0.104 µM and a wide linear range, outperforming conventional materials. Its performance remained stable under various pH conditions and scan rates, demonstrating proton-coupled electron transfer behavior. The synergistic interaction of Fe, GNPs, and TCPP enhances both electron transfer and analyte recognition, making this nanocomposite a promising candidate for field-deployable TNT sensors.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":535,"journal":{"name":"Electrocatalysis","volume":"17 1","pages":"185 - 197"},"PeriodicalIF":2.8,"publicationDate":"2025-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146016128","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Tailored Pt–rGO Catalyst with Dual Heteroatom Doping: A Synergistic Leap in HER and ORR Electrocatalysis 双杂原子掺杂的定制Pt-rGO催化剂：HER和ORR电催化的协同飞跃

IF 2.8 4区化学

Electrocatalysis Pub Date : 2025-11-28 DOI: 10.1007/s12678-025-00995-x

C Renugadevi, Abhay Pratap Singh, L Cindrella

引用次数: 0

Samarium-Doped La₂NiO₄ Perovskite as a High-Performance Electrocatalyst for Oxygen Evolution Reaction in Alkaline Media 掺钐La₂NiO₄钙钛矿作为碱性介质中析氧反应的高性能电催化剂

IF 2.8 4区化学

Electrocatalysis Pub Date : 2025-11-27 DOI: 10.1007/s12678-025-00993-z

Islam Saad, Rafat M. Amin, S.I. El-Dek, Horng-Yi Chang

{"title":"Samarium-Doped La₂NiO₄ Perovskite as a High-Performance Electrocatalyst for Oxygen Evolution Reaction in Alkaline Media","authors":"Islam Saad, Rafat M. Amin, S.I. El-Dek, Horng-Yi Chang","doi":"10.1007/s12678-025-00993-z","DOIUrl":"10.1007/s12678-025-00993-z","url":null,"abstract":"<div><p>The design and development of highly efficient and affordable oxygen evolution reaction (OER) electrocatalysts are crucial for linking water splitting to clean, renewable energy storage. In this study, nanostructured samarium-doped lanthanum nickelate (La₂NiO₄) perovskite oxides were synthesized via the citric acid-based combustion method and evaluated for their OER performance in alkaline media. Among the prepared samples, La₁.₈Sm₀.₂NiO₄ (LS<sub>0.2</sub>NO) exhibited distinct structural features and intrinsic catalytic properties that led to remarkable OER activity. More importantly, LS<sub>0.2</sub>NO demonstrated exceptional stability and achieved a current density of 10 mA·cm⁻² at a low overpotential of 350 mV in alkaline water electrolysis. The optimized catalyst showed a high electrochemical surface area (86.2 cm²), a Tafel slope of 75 mV/dec, and a turnover frequency (TOF) of 0.05 s⁻¹ at 10 mA·cm⁻². This performance highlights the potential of Sm-doped La₂NiO₄ as a cost-effective alternative to noble metal-based OER electrocatalysts.</p></div>","PeriodicalId":535,"journal":{"name":"Electrocatalysis","volume":"17 1","pages":"143 - 154"},"PeriodicalIF":2.8,"publicationDate":"2025-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146016122","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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