Electrochimica Acta最新文献_第10页

Enhanced electrokinetic remediation of cadmium contaminated soil by calcium phosphate-modified zeolite as permeable reactive barriers

IF 5.5 3区材料科学

Electrochimica Acta Pub Date : 2025-03-18 DOI: 10.1016/j.electacta.2025.146057

Xi Liu , Chenrui Lan , Zhenhao Yang , Xiaojie Zhuang , Haopeng Feng , Hongbin Wang , Wei Chen , Yangfeng Wu , Jing Tang

{"title":"Enhanced electrokinetic remediation of cadmium contaminated soil by calcium phosphate-modified zeolite as permeable reactive barriers","authors":"Xi Liu , Chenrui Lan , Zhenhao Yang , Xiaojie Zhuang , Haopeng Feng , Hongbin Wang , Wei Chen , Yangfeng Wu , Jing Tang","doi":"10.1016/j.electacta.2025.146057","DOIUrl":"10.1016/j.electacta.2025.146057","url":null,"abstract":"<div><div>Electrokinetic permeable reactive barrier (EK-PRB) is recognized as a prospective technology for the in-situ treatment of heavy metal-contaminated agricultural soils. However, the remediation efficiency is mostly limited by the PRB material. In this study, a calcium phosphate-modified zeolite(Z) adsorption material named Ca<sub>x</sub>(PO<sub>4</sub>)<sub>y</sub>/Z was successfully developed. The morphology and adsorption performance of Cd have been thoroughly explored. The adsorption capacity of Ca<sub>x</sub>(PO<sub>4</sub>)<sub>y</sub>/Z for Cd amounted to 209.97 mg g<sup>−1</sup>, and the fitted adsorption was in agreement with the mechanistic model, suggesting that the adsorption of Ca<sub>x</sub>(PO<sub>4</sub>)<sub>y</sub>/Z on Cd was mainly chemisorption. The fitted adsorption isothermal model showed that the adsorption of Z on cadmium was monolayer adsorption. The synthesized Ca<sub>x</sub>(PO<sub>4</sub>)<sub>y</sub>/Z was used as the adsorption material in EK-PRB to remove cadmium from contaminated agricultural soil. The removal efficiency of Cd is doubled compared to EK, and the energy consumption is reduced by about 147.2 kW·h for 1 g kg<sup>−1</sup> Cd removed. Moreover, the experimental results further confirm its potential for long-term stable application. This work demonstrates the practical feasibility of Ca<sub>x</sub>(PO<sub>4</sub>)<sub>y</sub>/Z as an efficient PRB material in EK-PRB for in-situ remediation of Cd-contaminated soil.</div></div>","PeriodicalId":305,"journal":{"name":"Electrochimica Acta","volume":"524 ","pages":"Article 146057"},"PeriodicalIF":5.5,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143640824","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Silicon-graphite composite anode materials with assembly structure by boron oxide auxiliary for high-performance lithium-ion batteries

IF 5.5 3区材料科学

Electrochimica Acta Pub Date : 2025-03-18 DOI: 10.1016/j.electacta.2025.146075

Yingxiang Fang , Donghao Lu , Jihuan Xie , Hui Guo , Junhang Tian , Xueyi Sun , Deping Wang

{"title":"Silicon-graphite composite anode materials with assembly structure by boron oxide auxiliary for high-performance lithium-ion batteries","authors":"Yingxiang Fang , Donghao Lu , Jihuan Xie , Hui Guo , Junhang Tian , Xueyi Sun , Deping Wang","doi":"10.1016/j.electacta.2025.146075","DOIUrl":"10.1016/j.electacta.2025.146075","url":null,"abstract":"<div><div>The assembly strategy for silicon-graphite composites is usually achieved by constructing weak interactions between silicon and graphite particles through various driving forces, which does not lead to the preparation of silicon-graphite composites with good interfacial compatibility. Inspired by the current application of boron oxide in the interface engineering of anode materials, this study proposes a novel assembly strategy with high efficiency and scalability. Substantial connections were formed at the interface between silicon and graphite by introducing boron oxide auxiliary in combination with high-speed fusion and low-temperature heating. The stability of the silicon-graphite assemblies was further enhanced by coating it with an additional layer of amorphous carbon. The resulting composite anode material exhibited a stable integrated structure. SiG@B<sub>2</sub>O<sub>3</sub>-C anode exhibits good long-term cycling stability with a high reversible capacity of 608 mAh·g<sup>−1</sup> at 0.1 A·g<sup>−1</sup> and a capacity retention of 87.10 % after 200 cycles. The results suggest that the novel assembly strategy using a boron oxide auxiliary is an efficient and promising approach for developing silicon-graphite anode material with stable structures at the silicon-graphite interface.</div></div>","PeriodicalId":305,"journal":{"name":"Electrochimica Acta","volume":"525 ","pages":"Article 146075"},"PeriodicalIF":5.5,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143640715","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Advances in the understanding of the electron-donating properties of carbon-based nanomaterials electrogenerated from graphite

IF 5.5 3区材料科学

Electrochimica Acta Pub Date : 2025-03-17 DOI: 10.1016/j.electacta.2025.146071

A.D. Veloso , A.M. Ferraria , R.A. Videira , M.C. Oliveira

{"title":"Advances in the understanding of the electron-donating properties of carbon-based nanomaterials electrogenerated from graphite","authors":"A.D. Veloso , A.M. Ferraria , R.A. Videira , M.C. Oliveira","doi":"10.1016/j.electacta.2025.146071","DOIUrl":"10.1016/j.electacta.2025.146071","url":null,"abstract":"<div><div>In a seminal paper, we demonstrated voltammetrically that carbon nanomaterials electrogenerated from graphite in specific carboxylic acid buffers show electron-donating properties, exhibiting a semiquinone-like state. Unexpectedly, after the terminus of the electrogeneration process, its concentration was found to increase when citrate was used as the synthesis buffer electrolyte. In this paper, we revisit and provide a mechanistic interpretation of this phenomenon.</div><div>Beyond the formation of semiquinone-like species during the galvanostatic synthesis, we present voltammetric and spectroscopic (XPS) evidence for the formation of a non-electroactive superoxide-quinone adduct. It was found that the two entities, semiquinone and superoxide-quinone adduct, can convert into each other in a redox cycle mediated by molecular oxygen, which allowed rationalising the temporal evolution of the voltammetric response.</div><div>It was concluded that the carboxylic acid buffer used in the electrochemical synthesis determines the quinonoid form of the carbon nanomaterial. In tartaric buffer solution, the semiquinone form predominates, whereas, in citrate and malic buffers, the quinone-superoxide adduct and an oxidised quinoid form are the dominant species, respectively. Upon the electrolyte removal, the electro-donating capacity of the nanomaterials is lost, and the nanomaterial is converted into a form with electron-accepting activity.</div><div>Overall, this study highlights the crucial role of the electrolyte in shaping and sustaining the electro-donating properties of hydrophilic carbon nanomaterials in aqueous media.</div></div>","PeriodicalId":305,"journal":{"name":"Electrochimica Acta","volume":"525 ","pages":"Article 146071"},"PeriodicalIF":5.5,"publicationDate":"2025-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143640825","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Optimization of grain size and interface structure of Li-rich cathodes based on various lithium contents 基于不同锂含量的富锂阴极晶粒尺寸和界面结构优化

IF 5.5 3区材料科学

Electrochimica Acta Pub Date : 2025-03-17 DOI: 10.1016/j.electacta.2025.146065

Kailin Liu , Shijie Xu , Qiangfeng Zhang , Haipeng Zhu , Libao Chen , Chunxiao Zhang , Gang Zhou , Weifeng Wei

{"title":"Optimization of grain size and interface structure of Li-rich cathodes based on various lithium contents","authors":"Kailin Liu , Shijie Xu , Qiangfeng Zhang , Haipeng Zhu , Libao Chen , Chunxiao Zhang , Gang Zhou , Weifeng Wei","doi":"10.1016/j.electacta.2025.146065","DOIUrl":"10.1016/j.electacta.2025.146065","url":null,"abstract":"<div><div>Li-rich Mn-based layered oxides (LMLOs) have been considered as the potential cathode materials to develop high-energy density lithium-ion batteries (LIBs) due to the lower cost and higher capacity. Whereas, LMLOs still face challenges of multiphase interfacial side reaction, structure transformation and microcrack growth, especially the polycrystalline particles. Herein, a high-performance submicron single-crystal-like Li-rich Mn-based layered material was obtained by optimizing lithium content to regulate crystal structure and interface chemistry. Detailed characterization indicates that the regulation of lithium content has a profound effect on the grain size, crystal structure and crystallinity. And the submicron LMLOs with appropriate lithium content exhibit a composite crystal structure composed of long-range ordered layered bulk phase and spinel heterogeneous surface layer, which combines the advantages of structural stability in single-crystal particles and rapid kinetic behavior in polycrystalline particles. Hence, the optimized submicron single-crystal-like LMLOs possess remarkable reversible capacity of 257.7 mAh/g and 143.2 mAh/g at 0.1 C and 10 C, respectively, corresponding to the capacity retention of 85.72% and voltage decay of 1.77 mV/cycle after 200 cycles at 1 C, which provides a new insight for the optimization and development of cathodes for rechargeable secondary battery.</div></div>","PeriodicalId":305,"journal":{"name":"Electrochimica Acta","volume":"525 ","pages":"Article 146065"},"PeriodicalIF":5.5,"publicationDate":"2025-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143640829","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Chloride sensing using optical probe

IF 5.5 3区材料科学

Electrochimica Acta Pub Date : 2025-03-17 DOI: 10.1016/j.electacta.2025.146064

Summer Dalgamouni, Driss Benhaddou, Stanko R. Brankovic

引用次数: 0

Explaining the mechanism of formic acid oxidation on single crystal Pd sites by platinum-palladium alloy single-crystal surfaces

IF 5.5 3区材料科学

Electrochimica Acta Pub Date : 2025-03-17 DOI: 10.1016/j.electacta.2025.146068

Gabriel Melle, Juan M. Feliu, Rosa M. Arán-Ais, Enrique Herrero

{"title":"Explaining the mechanism of formic acid oxidation on single crystal Pd sites by platinum-palladium alloy single-crystal surfaces","authors":"Gabriel Melle, Juan M. Feliu, Rosa M. Arán-Ais, Enrique Herrero","doi":"10.1016/j.electacta.2025.146068","DOIUrl":"10.1016/j.electacta.2025.146068","url":null,"abstract":"<div><div>The oxidation of formic acid (FAOR) is a critical reaction for direct formic acid fuel cells (DFAFCs), offering high theoretical efficiency and potential for sustainable energy conversion. This study investigates the FAOR mechanism on well-defined Pt-Pd alloy single-crystal surfaces, focusing on the role of Pd incorporation in modifying the electrocatalytic behavior of Pt(111) and Pt(100) electrodes. Through cyclic voltammetry, high-scan-rate voltammetry, and chronoamperometric analysis, the effect of Pd in the reaction mechanism is explored. Results reveal that Pd incorporation significantly alters the adsorption behavior, reaction kinetics, and poisoning rates by shifting onset potentials, increasing current densities, and reducing CO formation rates at low potentials. On (111) surfaces, the presence of Pd enhances the direct oxidation pathway, while on (100) surfaces, it significantly reduces the indirect CO-mediated pathway, while accelerating the reaction through the active path, leading to improved catalytic performance. Furthermore, formate adsorption and its role in the oxidation mechanism are discussed, with implications for the reaction efficiency at various Pd compositions.</div></div>","PeriodicalId":305,"journal":{"name":"Electrochimica Acta","volume":"524 ","pages":"Article 146068"},"PeriodicalIF":5.5,"publicationDate":"2025-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143640828","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Electrochemical synthesis of methane on (110) facets of carbides via MvK mechanism

IF 5.5 3区材料科学

Electrochimica Acta Pub Date : 2025-03-17 DOI: 10.1016/j.electacta.2025.146069

Naveed Ashraf, Younes Abghoui

{"title":"Electrochemical synthesis of methane on (110) facets of carbides via MvK mechanism","authors":"Naveed Ashraf, Younes Abghoui","doi":"10.1016/j.electacta.2025.146069","DOIUrl":"10.1016/j.electacta.2025.146069","url":null,"abstract":"<div><div>The transformation of CO<sub>2</sub> into energy-efficient fuels is facilitated through electrochemical reduction reactions. In this study, using density functional theory calculations, 8 transition metal carbides (CrC, HfC, MoC, NbC, TiC, VC, WC, and ZrC) with (110) facets have been investigated with consideration of the Mars van Krevelen (MvK). The results conclude that MvK is selectively applicable to methane formation, and TiC is an ideal choice for methane formation with an onset potential of -0.44 V. The onset potentials determined for MoC, NbC, VC, WC, ZrC, and HfC are -0.61, -0.61, -0.93, -0.87, -0.61, and -0.81 V, respectively. Furthermore, we calculated diffusion barriers for carbon atom migration from the sublayer to the first layer, and our promising candidate TiC, shows a migration energy barrier of 2.94 eV, indicating that this carbide should be stable against decomposition at ambient conditions. Spontaneous adsorption of H on the carbon site, less onset potential values, and high diffusion barriers of carbon migration conclude that TMCs with (110) facets are an excellent choice for CO<sub>2</sub>RR via the MvK mechanism.</div></div>","PeriodicalId":305,"journal":{"name":"Electrochimica Acta","volume":"525 ","pages":"Article 146069"},"PeriodicalIF":5.5,"publicationDate":"2025-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143640826","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Co doped-CuS as cathode for high-voltage aqueous Cu-Al hybrid-ion batteries 作为高压水性铜铝混合离子电池阴极的掺钴铜氧化物

IF 5.5 3区材料科学

Electrochimica Acta Pub Date : 2025-03-17 DOI: 10.1016/j.electacta.2025.146066

Meina Tan , Yang Qin , Jiaxin Luo , Yiping Wang , Fazhi Zhang , Xuhui Zhao , Xiaodong Lei

{"title":"Co doped-CuS as cathode for high-voltage aqueous Cu-Al hybrid-ion batteries","authors":"Meina Tan , Yang Qin , Jiaxin Luo , Yiping Wang , Fazhi Zhang , Xuhui Zhao , Xiaodong Lei","doi":"10.1016/j.electacta.2025.146066","DOIUrl":"10.1016/j.electacta.2025.146066","url":null,"abstract":"<div><div>Aqueous hybrid-ion batteries (AHBs) offered various advantages, including low cost, high energy density, high operation voltage, safety, and durability. These characteristics made them an attractive choice for energy storage devices. CuS was a high-capacity cathode material for Al storage. However, the rate performance of CuS under high-voltages conditions was not satisfying. Here, we prepared Co-doped CuS (Co-CuS) nanosheet material with the small band gap by using the ball milling method as the cathode material of aqueous Cu-Al hybrid-ion battery. Co doping can improve the electron transport capacity and provide more active sites. At high current density, Co doping enhances the electrochemical kinetics, operating voltage and electrochemical performance of the materials. The battery exhibits a capacity of 175 mAh g<sup>-1</sup> at 2000 mA g<sup>-1</sup> and 108 mAh g<sup>-1</sup> at 4000 mA g<sup>-1</sup>. After 200 cycles of charge and discharge tests, a capacity of 93 mAh g<sup>-1</sup> remains. This offers a valuable approach to the development of aqueous Cu-Al hybrid-ion battery electrode materials with good electrochemical performance under high operating voltage and high current conditions.</div></div>","PeriodicalId":305,"journal":{"name":"Electrochimica Acta","volume":"524 ","pages":"Article 146066"},"PeriodicalIF":5.5,"publicationDate":"2025-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143640827","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Ultrasonic deionization of liquid

IF 5.5 3区材料科学

Electrochimica Acta Pub Date : 2025-03-17 DOI: 10.1016/j.electacta.2025.146059

D.А. Biryukov , V.I. Volkov , D.N. Gerasimov , N.A. Solovyev

引用次数: 0

Insights into electron tunneling and confinement effects in electrochemical double layers using the jellium model

IF 5.5 3区材料科学

Electrochimica Acta Pub Date : 2025-03-16 DOI: 10.1016/j.electacta.2025.145998

Patiman Abudu , Yitao He

引用次数: 0