Electrochemistry Communications最新文献

{"title":"Solution combustion synthesis of disordered spinel LiMn1.5Ni0.5O4 cathode material using PVP fuel","authors":"M. Azari,&nbsp;S.M. Masoudpanah,&nbsp;S. Alamolhoda","doi":"10.1016/j.elecom.2025.107945","DOIUrl":"10.1016/j.elecom.2025.107945","url":null,"abstract":"<div><div>In this research, the LiMn_1.5Ni_0.5O₄ powders were prepared by solution combustion method using metal nitrates as an oxidant and various amounts of polyvinylpyrrolidone (PVP) as fuel. The effects of PVP contents and calcination treatment on the Mn³⁺proportion, morphology, and electrochemical properties were explored. The calcination treatment included the two-step process (pretreatment at 450 °C and then calcination at 800 °C) and one-step treatment at 600 °C. Single-phase LiMn_1.5Ni_0.5O₄ powders with disordered spinel crystal structure (space group of Fd3m) were crystallized by calcination at 600 °C at the lowest fuel contents. The LiMn_1.5Ni_0.5O₄ particles had octahedral morphology even at the calcination temperature of 600 °C. The LiMn_1.5Ni_0.5O₄ powders calcined using the two-step process exhibited comparable lithium-ion storage performance, including a capacity retention of 99 % following 200 charge/discharge cycles at 1C and a specific capacity of 110 mAh g⁻¹.</div></div>","PeriodicalId":304,"journal":{"name":"Electrochemistry Communications","volume":"177 ","pages":"Article 107945"},"PeriodicalIF":4.7,"publicationDate":"2025-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143904221","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Sustainability and scalability of photoelectrochemical and photocatalytic water splitting by using perovskite materials for hydrogen production","authors":"Tingwei Ao ,&nbsp;Ali Turab Jafry ,&nbsp;Naseem Abbas","doi":"10.1016/j.elecom.2025.107948","DOIUrl":"10.1016/j.elecom.2025.107948","url":null,"abstract":"<div><div>Hydrogen production through solar-driven water splitting is a promising pathway toward sustainable energy, with perovskite materials emerging as key components in enhancing the efficiency and scalability of photocatalytic (PC) and photoelectrochemical (PEC) systems. This review provides a comprehensive analysis of the role of perovskites in these processes, emphasizing their unique structural and electronic properties, such as tunable bandgaps and superior charge transport capabilities. We explore the latest advancements in the synthesis and optimization of perovskite materials, focusing on the critical challenges of stability, scalability, and cost-effectiveness. The review also highlights future directions for the development of next-generation perovskites, including innovations in bandgap engineering, material durability, and commercial viability. This work aims to guide the ongoing research efforts in leveraging perovskite materials for large-scale, sustainable hydrogen catalysis production, contributing to the global transition toward clean energy solutions.</div></div>","PeriodicalId":304,"journal":{"name":"Electrochemistry Communications","volume":"177 ","pages":"Article 107948"},"PeriodicalIF":4.7,"publicationDate":"2025-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143908141","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Improving the electrochemical performance of LiNi0.5Co0.2Mn0.3O2 via surface modification with Li1.3Al0.3Ti1.7(PO4)3 coating","authors":"Nianchun Yao ,&nbsp;Min Zhang ,&nbsp;Yulin He ,&nbsp;Keyin Cao ,&nbsp;Ying Li ,&nbsp;Ziqiang Wang","doi":"10.1016/j.elecom.2025.107946","DOIUrl":"10.1016/j.elecom.2025.107946","url":null,"abstract":"<div><div>This paper presents a simplified process for synthesizing LiNi_0.5Co_0.2Mn_0.3O₂ (NCM523) coated with Li_1.3Al_0.3Ti_1.7(PO₄)₃ (LATP) to optimize electrochemical characteristics by adjusting LATP content adjustment. LATP, as a superior Li-ion conductive layer, reduces polarization and enhances cycling performance at 50 °C. X-ray diffraction (XRD) confirms that all samples maintain a stable alpha-NaFeO₂ layered structure. Performance tests of half and full batteries at room temperature and 50 °C show that the 2 wt% LATP-coated sample exhibits the best electrochemical performance. Cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS) show that the LATP-coated sample has higher lithium ion diffusion coefficients and lower charge transfer resistance, which improves rate capability.</div></div>","PeriodicalId":304,"journal":{"name":"Electrochemistry Communications","volume":"176 ","pages":"Article 107946"},"PeriodicalIF":4.7,"publicationDate":"2025-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144070856","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"K3NbF7's electrochemical characteristics in the NaCl-KCl molten salt system at the Mo electrode","authors":"Zhuan Zhao ,&nbsp;Dongsheng Jiang ,&nbsp;Yi Chen ,&nbsp;Huan Zhang ,&nbsp;Ruifang Wang ,&nbsp;Shaolong Li ,&nbsp;Jianxun Song ,&nbsp;Yusi Che ,&nbsp;Jilin He","doi":"10.1016/j.elecom.2025.107943","DOIUrl":"10.1016/j.elecom.2025.107943","url":null,"abstract":"<div><div>To explore the electrochemical behavior of Nb (IV) for form Nb metal, molten salt electrolysis was carried out in an NaCl-KCl melt containing K₃NbF₇ at 750 °C. It was discovered that Nb (IV) reduces in three stages: Nb(IV)➔Nb(III)➔Nb(II)➔Nb，and reduction process of Nb(IV)➔Nb(III) was irreversible process controlled by diffusion mechanism. The instantaneous nucleation of niobium on the molybdenum electrode is observed in the KCl-NaCl-K₃NbF₇ melt, which occurs at a potential of −3.06 V vs. Cl₂/Cl⁻ and a temperature of 750 °C, the niobium metal was deposited on Mo wire cathode by constant potential electrolysis, resulting in a high purity of 98.63 %.</div></div>","PeriodicalId":304,"journal":{"name":"Electrochemistry Communications","volume":"176 ","pages":"Article 107943"},"PeriodicalIF":4.7,"publicationDate":"2025-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143882239","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Solidwood-derived carbon modified by a S-doping process of self-gasification toward an anode in sodium-ion batteries","authors":"Xinwen Jiang ,&nbsp;Bing Feng ,&nbsp;Shanshan Chang ,&nbsp;Xiaolin Liu ,&nbsp;Gonggang Liu ,&nbsp;Yuanyuan Liao ,&nbsp;Yuanjuan Bai ,&nbsp;Ting Li ,&nbsp;Jinbo Hu","doi":"10.1016/j.elecom.2025.107931","DOIUrl":"10.1016/j.elecom.2025.107931","url":null,"abstract":"<div><div>Hard carbons play a pivotal role in a commercial proceed of Na-ion battery as it must be continually modified by some strategy, e. g. the self-support effect, optimal interlayer spacing, active site. Herein, it is reported that 3D basswood-derived carbon for the negative electrode in sodium ion batteries has been doped by a sulfur selfgasification. It is discovered that different high-temperature basswood-derived carbon can been dilated the interlayer distance of carbon, furthermore, most effectual expansion of inter-layer spacing has applied the carbonization of the highest-temperature process. S-doped procedure in S-SHCs has modified the disorderness of carbon, at same time, the structural defects and pore tuning in S-SHC-1300 has been most developed. S-SHC-1300 had been detected the best rate performance, with a specific capacity of 394.1 mAh g⁻¹ under a current density of 25 mA g⁻¹. And then, 72.55 % of the original reversible specific capacity was still held by the proposed electrode after 4500 long-term cycles at a current of 1 A g⁻¹. These discoveries can innovate a potential avenue for studying the interaction between the Na-ion storage performance and S-doped procedure, of course, helping to comprehend the anode performance underlying the micro-structure and chemistry composition.</div></div>","PeriodicalId":304,"journal":{"name":"Electrochemistry Communications","volume":"176 ","pages":"Article 107931"},"PeriodicalIF":4.7,"publicationDate":"2025-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143874930","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"NiFe co-doped TiO2 as a high-performance bifunctional photocatalyst for enhanced oxygen evolution and reduction reactions in efficient zinc-air battery systems","authors":"Md Iftekher Hossain,&nbsp;Foysal Kabir Tareq,&nbsp;Souman Rudra","doi":"10.1016/j.elecom.2025.107942","DOIUrl":"10.1016/j.elecom.2025.107942","url":null,"abstract":"<div><div>This study underscores the significant influence of Ni and Fe transition metal doping, as well as NiFe co-doping, on enhancing the properties of TiO₂ to address the critical challenges in developing high-performance photo-assisted Zn-air batteries, particularly the need for improved light absorption, charge carrier separation, and catalytic efficiency. The doping process notably enhances light absorption and charge carrier separation, while the reduction in TiO₂ crystallite size increases the surface area and shortens charge carrier diffusion paths, thereby minimizing recombination rates and improving photocatalytic efficiency. Moreover, the higher redox potentials of Ni and Fe oxidation states relative to TiO₂'s conduction band enable them to function as efficient electron acceptors, stabilizing charge carriers and accelerating reduction reactions. Electrochemical analysis reveals that NiFe-doped TiO₂ exhibits superior conductivity and reduced charge transfer resistance compared to its single-element-doped counterparts, facilitating faster reaction kinetics. For OER, the overpotential decreases from 307 mV to 221 mV, while for ORR, illumination improves the half-wave potential to 0.65 V and increases the diffusion-plateau current density from 3.96 mA/cm² to 4.6 mA/cm². Battery performance testing demonstrates that under light irradiation, the charging potential is reduced to 1.63–1.66 V, and the discharge voltage is stabilized at 1.56–1.60 V, resulting in a round-trip efficiency of 96.34 %, compared to 77.59 % under dark conditions. These performance metrics approach the theoretical redox potential of 1.64 V, outperforming the capabilities of the state-of-the-art catalysts for photo-assisted Zn-air systems. Overall, this work establishes NiFe-doped TiO₂ as a highly effective bifunctional photocatalyst, highlighting its potential to optimize oxygen evolution reaction (OER) and oxygen reduction reaction (ORR) processes, thereby contributing to advancements in sustainable energy storage technologies.</div></div>","PeriodicalId":304,"journal":{"name":"Electrochemistry Communications","volume":"176 ","pages":"Article 107942"},"PeriodicalIF":4.7,"publicationDate":"2025-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143870145","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Application of graphitic carbon nitride (g-C3N4) in solid polymer electrolytes: A mini review","authors":"Minghao Ye ,&nbsp;Binbin Li ,&nbsp;Keyu Zhang ,&nbsp;Rui Yan ,&nbsp;Longbin Dai ,&nbsp;Shaoze Zhang ,&nbsp;Yin Li ,&nbsp;Junxian Hu ,&nbsp;Bin Yang ,&nbsp;Yaochun Yao","doi":"10.1016/j.elecom.2025.107939","DOIUrl":"10.1016/j.elecom.2025.107939","url":null,"abstract":"<div><div>Commercial lithium-ion batteries (LIBs) predominantly rely on liquid electrolytes, which are prone to various safety risks, such as leakage and combustion. Solid-state batteries (SSBs), represented by solid polymer electrolytes (SPEs), offer a dual advantage of enhancing safety and increasing energy density for electrochemical energy storage devices. However, the inherent characteristics of SPEs, such as high crystallinity and restricted molecular chain mobility, result in low ionic conductivity at room temperature, further limiting their commercial applications. Introducing inorganic fillers has proven to be an effective strategy to improve the ionic conductivity of SPEs. Graphitic carbon nitride (g-C₃N₄) stands out with its graphene-like two-dimensional planar structure, exhibiting exceptional physical properties (tunable electronic structure and excellent mechanical performance) and chemical stability (resistance to acid, alkali, and organic solvents). These attributes make it a widely researched for enhancing the comprehensive performance of SPEs. This paper provides a detailed overview of the synthesis techniques for g-C₃N₄, focusing on its action mechanisms for improving ion transport within SPEs. It comprehensively summarizes the applications and performance optimization strategies of g-C₃N₄ in SPEs, while also discussing future perspectives and directions for advancing the role of g-C₃N₄ in enhancing the performance of SPEs.</div></div>","PeriodicalId":304,"journal":{"name":"Electrochemistry Communications","volume":"176 ","pages":"Article 107939"},"PeriodicalIF":4.7,"publicationDate":"2025-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143876747","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Ternary zinc oxide-tungsten oxide-MXenes nanocomposite as a high performance material for photocatalytic and photo-electrocatalytic desulfurization of dibenzothiophene","authors":"Zohreh Tahmasebi,&nbsp;Ensieh Ghasemian Lemraski","doi":"10.1016/j.elecom.2025.107933","DOIUrl":"10.1016/j.elecom.2025.107933","url":null,"abstract":"<div><div>It is of prime importance to develop the high-performance photocatalytic materials for desulfurization of organosulfur compounds, which is essential for producing clean diesel fuel and still remains a grand challenge. Tuning the electronic structure through composites of different metal oxides and improving the photocatalytic active sites through morphology regulation in the form of nanostructures are the most popular ways to enhance the photocatalytic performance. Herein, mesoporous ternary composite materials based on WO₃/ZnO/MXene were prepared using a simple physical mixing method. The results showed that the WO₃/ZnO/MXene exhibits a higher photocurrent density (1300 μA/cm²) than ZnO/MXenes (90 μA/cm²). The photocatalytic activity performance of the composite was investigated toward photocatalytic oxidation of dibenzothiophene (DBT) in n-Hexane solution. The effect of key parameters such as temperature, reaction time, DBT concentration, solvent, and voltage in desulfurization of DBT were investigated using the as-prepared composite materials. Under optimum condition, the WO₃/ZnO/MXene revealed up to 82.25 % desulfurization efficiency, which is greater than with ZnO/MXenes materials. Moreover, in comparison with photocatalysis and electrocatalysis approaches, the photo-electrocatalytic method offered better performance and degradation efficiency using WO₃/ZnO/MXenes photoanode with 92.62 % DBT removal during the reaction time. This enhanced activity toward photocatalytic oxidation of DBT can be due to the synergistic effect of multiple metal oxides, increased surface area, presence of mesoporous structure, and uniform distribution of metal oxides in the layered-MXenes structure.</div></div>","PeriodicalId":304,"journal":{"name":"Electrochemistry Communications","volume":"177 ","pages":"Article 107933"},"PeriodicalIF":4.7,"publicationDate":"2025-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143904220","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Enhancing the performance of supercapacitor electrodes from corncob-derived 3D hierarchical porous carbon: Effects of N concentration","authors":"J.C. Martínez-Loyola ,&nbsp;M.A. Carrasco-Cordero ,&nbsp;I.L. Alonso-Lemus ,&nbsp;F.J. Rodríguez-Varela ,&nbsp;S. Ravichandran ,&nbsp;B. Escobar-Morales ,&nbsp;Y.I. Vega-Cantú ,&nbsp;F.J. Rodríguez-Macías","doi":"10.1016/j.elecom.2025.107940","DOIUrl":"10.1016/j.elecom.2025.107940","url":null,"abstract":"<div><div>We report supercapacitors from hierarchical porous carbon nanostructures (HPCNs) by simple pyrolysis of corncob (CC), with urea doping providing performance comparable to the more common metal-doped electrodes. Via a systematic study of N doping, we establish for the first time that the types of nitrogen‑carbon species, which vary with the urea‑carbon ratio, affect electrode performance. The 1:3 ratio (CC₃) gave a higher specific capacitance of 335 F g⁻¹ at 1 mV s⁻¹ in a three-electrode system, and 287 F g⁻¹ at 0.2 A g⁻¹ in a symmetric device. We achieved solution and transfer resistances lower than reported for other materials: R_s = 0.20 Ω and R_ct = 0.78 Ω respectively. We attribute the better performance of CC₃ to its specific N-doping, dominated by graphitic-N plus oxidized nitrogen and C–OH groups; showing also a larger carbon (002) interplanar distance (<em>d</em>₍₀₀₂₎ = 0.392) and high specific surface area (1149 m² g⁻¹). The assembled prototype delivers a good energy density of 9.96 Wh kg⁻¹ at 403.22 W kg⁻¹ and retains ca. 76 % capacity after 10,000 cycles. This work shows that studying doping concentrations is essential to design and produce highly efficient biomass-based electrodes for energy storage applications, using simple synthesis methods and readily available reagents.</div></div>","PeriodicalId":304,"journal":{"name":"Electrochemistry Communications","volume":"177 ","pages":"Article 107940"},"PeriodicalIF":4.7,"publicationDate":"2025-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143908142","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Electrochemical performance and behavior of nickel pig Iron anodic electrolysis for enhanced sulfuric acid leaching","authors":"Namhun Kwon ,&nbsp;Myungsuk Kim ,&nbsp;Soongju Oh ,&nbsp;Jae Hong Shin ,&nbsp;Kyoung-Tae Park","doi":"10.1016/j.elecom.2025.107937","DOIUrl":"10.1016/j.elecom.2025.107937","url":null,"abstract":"<div><div>This study presents an innovative electrochemical method for producing ultra-fine Nickel Pig Iron (NPI) powders through anodically induced overpotential electrolysis, achieving a significantly high surface area and exceptional sulfuric acid leaching efficiency. Nickel, a critical material for energy applications, faces increasing supply constraints, leading to greater reliance on intermediates like nickel sulfate. Conventional high-pressure acid leaching (HPAL) processes, while effective, suffer from high operational costs and excessive acid waste generation. To address these challenges, this study employs anodic oxidation of NPI under high-voltage conditions (≥10 V), facilitating particle refinement and enhanced electrochemical reactivity. Electrochemical characterizations, including cyclic voltammetry, chronoamperometry, and Pourbaix diagram analysis, confirm the formation of oxidized Ni-rich phases at optimal voltage ranges with peak current exceeding 10 A. The resulting fine NPI powders exhibit a leaching efficiency surpassing 95 % in 2 mol/L sulfuric acid at ambient temperature and pressure, demonstrating their potential as a cost-effective alternative to HPAL. Further post-process evaluations reveal critical electrolysis parameters influencing oxidation behavior and leaching performance, providing key insights for optimizing nickel extraction via anodic electrolysis.</div></div>","PeriodicalId":304,"journal":{"name":"Electrochemistry Communications","volume":"177 ","pages":"Article 107937"},"PeriodicalIF":4.7,"publicationDate":"2025-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143912534","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}