Electrocatalysis最新文献_第6页

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

Electrochemical Study of Binder-Free Electrodeposited NiCo2O4 Thin Film: Influence of Annealing Temperature 无粘结剂电沉积NiCo2O4薄膜的电化学研究：退火温度的影响

IF 2.8 4区化学

Electrocatalysis Pub Date : 2025-11-22 DOI: 10.1007/s12678-025-00994-y

Roupya Gopal Ghosh, Shradha Roy, Partha Mitra, Ayan Mukherjee

{"title":"Electrochemical Study of Binder-Free Electrodeposited NiCo2O4 Thin Film: Influence of Annealing Temperature","authors":"Roupya Gopal Ghosh, Shradha Roy, Partha Mitra, Ayan Mukherjee","doi":"10.1007/s12678-025-00994-y","DOIUrl":"10.1007/s12678-025-00994-y","url":null,"abstract":"<div><p>In the field of energy storage, transition metal oxide thin films have become an exceptional candidate for electrode fabrication in recent times. In this study, we attempt to figure out the influence of annealing temperature on the structure and surface morphology, and also the impact on electrolyte ion transfer kinetics through porous NiCo<sub>2</sub>O<sub>4</sub> (NCO) electrodes. NCO thin films have been efficaciously synthesized on conductive stainless steel (SS-304) substrate by using the potentiostatic electrodeposition technique followed by annealing at different temperatures (350℃, 400℃, and 450℃). The galvanostatic charge-discharge (GCD) plateaus reveal NCO-350 electrode exhibits a maximum specific capacitance of 896 F/g at 1 A/g. Electrochemical impedance spectroscopy (EIS) results suggest minimal diffusion resistance of the electrolyte ions confirming good conductive nature of the samples. After 3000 cyclic voltammetry (CV) cycles, the NCO-450 electrode possesses the highest capacitance retention value of 94.9% among all three electrodes. The overall electrochemical performance highlights the potential of NiCo<sub>2</sub>O<sub>4</sub> thin films as efficient electrode materials for high-performance supercapacitors.</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":"128 - 142"},"PeriodicalIF":2.8,"publicationDate":"2025-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146016121","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

The Mineralization and Detoxification of PFOA Using a Sn/ZnO2@Ti4O7Anode Sn/ZnO2@Ti4O7Anode对PFOA的矿化和解毒作用

IF 2.8 4区化学

Electrocatalysis Pub Date : 2025-11-06 DOI: 10.1007/s12678-025-00990-2

Zehong Yang, Zihao Wang, Qiuhong Qiu, Yuzhan Luo, Chenglong Wang, Yaobin Huang, Tao Zhuang, Weijin Zheng, Liang Chen, Liying Lan, Guangli Liu, Jiasheng Fang, Yanliang Li, Sihao Lv, Wenlong Wang, Yongfu Qiu, Qiongfang Zhuo

{"title":"The Mineralization and Detoxification of PFOA Using a Sn/ZnO2@Ti4O7Anode","authors":"Zehong Yang, Zihao Wang, Qiuhong Qiu, Yuzhan Luo, Chenglong Wang, Yaobin Huang, Tao Zhuang, Weijin Zheng, Liang Chen, Liying Lan, Guangli Liu, Jiasheng Fang, Yanliang Li, Sihao Lv, Wenlong Wang, Yongfu Qiu, Qiongfang Zhuo","doi":"10.1007/s12678-025-00990-2","DOIUrl":"10.1007/s12678-025-00990-2","url":null,"abstract":"<div><p>A Sn/ZnO<sub>2</sub>@Ti<sub>4</sub>O<sub>7</sub> anode was prepared using a combination of hydrothermal synthesis and discharge plasma sintering methods for the electrochemical degradation of perfluorooctanoic acid (PFOA). The introduction of Sn/ZnO<sub>2</sub> significantly increased the electrochemical active surface area (ECSA) and the oxygen evolution potential (OEP) of Ti<sub>4</sub>O<sub>7</sub>. A 97.6% degradation rate of PFOA can be achieved using a Sn/ZnO<sub>2</sub>@Ti<sub>4</sub>O<sub>7</sub> anode, at a current density of 40 mA/cm<sup>2</sup>, with the initial PFOA concentration of 10 mg/L, at a pH value of 5.69, and within 120 min. Radical quenching experiments indicated that direct oxidation was the main mechanism for PFOA degradation, contributing 82.5%. The degradation efficiencies of PFOA remained above 88% in Dongjiang and Zhujiang rivers (DJR and ZJR) matrixes, confirming the system’s resistance to complex matrix. The total organic carbon (TOC) removal ratio was 56.8%, and the defluorination ratio was 48% after electrolysis of 6 h. After 36 cycles of degradation, the degradation rate was 95.6%. The toxicity assessments indicated that the degradation intermediates were significantly less toxic than the parent PFOA.</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":"99 - 115"},"PeriodicalIF":2.8,"publicationDate":"2025-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146016120","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

Improvement in perovskite Performance by Using Doping Method Under Alkaline Medium 在碱性介质下用掺杂法改善钙钛矿性能

IF 2.8 4区化学

Electrocatalysis Pub Date : 2025-11-06 DOI: 10.1007/s12678-025-00983-1

Soumaya Gouadria, F. F. Alharbi, Muhammad Abdullah, Hafiz Muhammad Tahir Farid, Salma Aman

{"title":"Improvement in perovskite Performance by Using Doping Method Under Alkaline Medium","authors":"Soumaya Gouadria, F. F. Alharbi, Muhammad Abdullah, Hafiz Muhammad Tahir Farid, Salma Aman","doi":"10.1007/s12678-025-00983-1","DOIUrl":"10.1007/s12678-025-00983-1","url":null,"abstract":"<div><p>The quick decline of fossil fuels caused by high consumption levels has boosted the creation of sustainable energy conversion systems, resulting in a growing energy crisis. The ongoing energy requirement drives the exploration of innovative options for water splitting. It is critical to develop an exceptionally efficient electrocatalyst that can enhance the sluggish oxygen evolution reaction (OER). BiFeO<sub>3</sub> and Sm-doped BiFeO<sub>3</sub> were manufactured via sol–gel technique and investigated as a catalyst for OER in a 1.00 M KOH. The morphology and crystalline phases were resolved by utilizing a different analytical technique. The Sm-doped BiFeO<sub>3</sub> displayed efficient OER performance having overpotential (η = 186 mV) at 10 mA /cm<sup>2</sup> and Tafel value (32 mV/dec) and solution resistance (R<sub>s</sub>) of 0.83 Ω. In addition, the electrocatalytic efficiency of Sm-doped BiFeO<sub>3</sub> catalyst for OER exhibits exceptional sustainability for 40 h and an increased electrochemically active surface area (ECSA) of 897.5 cm<sup>2</sup>. The better performance of the Sm-doped BiFeO<sub>3</sub> catalyst may be linked to several factors, including its distinctive interrelated morphology, strong synergistic interactions between Sm, Bi and Fe and effective OH<sup>−</sup> ions adsorption. The results indicate that Sm-doped BiFeO<sub>3</sub> has potential as an electrocatalyst in practical applications.</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":"116 - 127"},"PeriodicalIF":2.8,"publicationDate":"2025-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146016147","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 CO2-Reduction to Formate over Activated-Carbon-Supported Transition Metals (M = Cu, Fe, Zn, Ni, Co)-Based High-Entropy Oxide 活性炭负载过渡金属（M = Cu, Fe, Zn, Ni, Co）基高熵氧化物上的电化学co2还原生成甲酸盐

IF 2.8 4区化学

Electrocatalysis Pub Date : 2025-10-18 DOI: 10.1007/s12678-025-00989-9

Naveen Kumar Verma, Basker Sundararaju, Nishith Verma

{"title":"Electrochemical CO2-Reduction to Formate over Activated-Carbon-Supported Transition Metals (M = Cu, Fe, Zn, Ni, Co)-Based High-Entropy Oxide","authors":"Naveen Kumar Verma, Basker Sundararaju, Nishith Verma","doi":"10.1007/s12678-025-00989-9","DOIUrl":"10.1007/s12678-025-00989-9","url":null,"abstract":"<div><p>The electrochemical CO<sub>2</sub> reduction to produce valuable chemicals is a viable approach for mitigating carbon emissions. In this study, a high-entropy oxides (HEOs)-based electrocatalyst comprising the oxide of transition metals (M = Co, Fe, Zn, Ni, and Cu; termed CFZNC) anchored on activated-carbon powder (ACP) is synthesized by the polymerization of phenol and formaldehyde in situ dispersed with the respective metal salts, followed by ball milling and thermal treatment (carbonization and steam activation) of the synthesized polymeric beads. The electrochemical characterization tests of the prepared CFZNC-HEO/ACP electrocatalyst confirm a high current density of 10 mA.cm<sup>−2</sup> at a low applied potential of − 0.37 V vs. RHE. The electrochemical CO<sub>2</sub> reduction tests reveal a formate (HCOO<sup>−</sup>) Faradaic efficiency of 98 ± 4.9% and a cathodic energy efficiency of 86 ± 4.3% at − 0.4 V, thus highlighting an efficient energy utilization of the material and selectivity toward formate production. Notably, the comparative tests reveal CFZNC-HEO/ACP outperforming its high-entropy alloy (HEA) counterpart, viz. CFZNC-HEA/ACP-based electrocatalyst, thus obviating the need for the high-temperature hydrogen-reduction step required to transform metal oxides to metal alloy. The enhanced performance is attributed to the synergistic effect of the multiple metal oxides in the high-entropy formation and the highly porous and conductive carbon substrate. These findings demonstrate the promise of high-entropy metal-oxide-based electrocatalyst in advancing efficient and sustainable CO<sub>2</sub> reduction technologies.</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":"84 - 98"},"PeriodicalIF":2.8,"publicationDate":"2025-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146016057","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