Pub Date : 2025-01-04DOI: 10.1016/j.electacta.2025.145648
Hillary E. Rodríguez Lucas, Fernando Garay
Diverse systems of technologic and scientific relevance involve a surface-confined diffusional problem coupled to a charge transfer reaction and depend on similar boundary conditions. A general mathematical solution for describing electrochemical responses associated with the diffusion of electroactive species into a host thin-film (TF) material is presented. In this manuscript, the mathematical solutions correspond to chronoamperometric profiles of electrodes modified with a TF where the electroactive species have different permeability and reversibility of the charge transfer reaction.In chronoamperometric measurements, the film permeability (or the partition constant) affects the ratio between the values of current measured at long and short times of a Cottrell plot. Besides, the ratio between the film thickness and the diffusion coefficient of species inside the film affects the time when the TF behavior can be observed.The model is used to optimize the fit of chronoamperometric profiles corresponding to the oxidation of FcMeOH at a GCE modified with a hydrophobic TF. The charge transfer rate found is slower than expected, probably because the ionic exchange at the TF-aqueous solution interface would delay the electron transfer process.
{"title":"Mathematical model for evaluating permeability and electrode reversibility in thin-film voltammetry. Part 1: Chronoamperometric behavior.","authors":"Hillary E. Rodríguez Lucas, Fernando Garay","doi":"10.1016/j.electacta.2025.145648","DOIUrl":"https://doi.org/10.1016/j.electacta.2025.145648","url":null,"abstract":"Diverse systems of technologic and scientific relevance involve a surface-confined diffusional problem coupled to a charge transfer reaction and depend on similar boundary conditions. A general mathematical solution for describing electrochemical responses associated with the diffusion of electroactive species into a host thin-film (TF) material is presented. In this manuscript, the mathematical solutions correspond to chronoamperometric profiles of electrodes modified with a TF where the electroactive species have different permeability and reversibility of the charge transfer reaction.In chronoamperometric measurements, the film permeability (or the partition constant) affects the ratio between the values of current measured at long and short times of a Cottrell plot. Besides, the ratio between the film thickness and the diffusion coefficient of species inside the film affects the time when the TF behavior can be observed.The model is used to optimize the fit of chronoamperometric profiles corresponding to the oxidation of FcMeOH at a GCE modified with a hydrophobic TF. The charge transfer rate found is slower than expected, probably because the ionic exchange at the TF-aqueous solution interface would delay the electron transfer process.","PeriodicalId":305,"journal":{"name":"Electrochimica Acta","volume":"97 1","pages":""},"PeriodicalIF":6.6,"publicationDate":"2025-01-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142924525","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}
The electrodeposition of Al is essential for applications such as electroplating, electrorefining, and rechargeable Al batteries. However, the standard electrolyte currently used for Al electrodeposition, viz., 1-ethyl-3-methylimidazolium chloride–AlCl3 ionic liquid, is prohibitively expensive for widespread industrial application. This study explored alternative ionic liquid electrolytes composed of AlCl3 and primary or secondary alkylamine hydrochlorides (RNH3Cl and R2NH2Cl) with varying alkyl chain lengths (R = methyl (Me), ethyl (Et), n-propyl (n-Pr), n-butyl (n-Bu)) for Al electrodeposition. The phase states of a series of mixtures of alkylamine hydrochlorides and AlCl3 at different molar ratios were examined to identify the conditions required for forming a single liquid phase. Notably, a single liquid phase was obtained at room temperature (30°C) for n-PrNH3Cl–AlCl3, n-BuNH3Cl–AlCl3, and n-Bu2NH2Cl–AlCl3 ionic liquids. These ionic liquids exhibit conductivities of approximately 10 mS cm⁻¹ at 30°C. Galvanostatic electrodeposition studies using these electrolytes confirmed that Al electrodeposition occurs with current efficiencies exceeding 90% at current densities of 5–12 mA cm−2. This study demonstrates that alkylamine hydrochloride–AlCl3 ionic liquids with an appropriate alkyl chain length of the amine can serve as promising low-cost electrolytes for Al electrodeposition.
{"title":"Ionic liquid electrolytes composed of AlCl3 and primary/secondary alkylamine hydrochlorides with varying alkyl chain lengths for Al electrodeposition","authors":"Takashi Kubo, Akihiro Tanaka, Takumi Ikenoue, Tetsuji Hirato, Masao Miyake","doi":"10.1016/j.electacta.2025.145647","DOIUrl":"https://doi.org/10.1016/j.electacta.2025.145647","url":null,"abstract":"The electrodeposition of Al is essential for applications such as electroplating, electrorefining, and rechargeable Al batteries. However, the standard electrolyte currently used for Al electrodeposition, viz., 1-ethyl-3-methylimidazolium chloride–AlCl<sub>3</sub> ionic liquid, is prohibitively expensive for widespread industrial application. This study explored alternative ionic liquid electrolytes composed of AlCl<sub>3</sub> and primary or secondary alkylamine hydrochlorides (RNH<sub>3</sub>Cl and R<sub>2</sub>NH<sub>2</sub>Cl) with varying alkyl chain lengths (R = methyl (Me), ethyl (Et), <em>n</em>-propyl (<em>n</em>-Pr), <em>n</em>-butyl (<em>n</em>-Bu)) for Al electrodeposition. The phase states of a series of mixtures of alkylamine hydrochlorides and AlCl<sub>3</sub> at different molar ratios were examined to identify the conditions required for forming a single liquid phase. Notably, a single liquid phase was obtained at room temperature (30°C) for <em>n</em>-PrNH<sub>3</sub>Cl–AlCl<sub>3</sub>, <em>n</em>-BuNH<sub>3</sub>Cl–AlCl<sub>3</sub>, and <em>n</em>-Bu<sub>2</sub>NH<sub>2</sub>Cl–AlCl<sub>3</sub> ionic liquids. These ionic liquids exhibit conductivities of approximately 10 mS cm⁻¹ at 30°C. Galvanostatic electrodeposition studies using these electrolytes confirmed that Al electrodeposition occurs with current efficiencies exceeding 90% at current densities of 5–12 mA cm<sup>−2</sup>. This study demonstrates that alkylamine hydrochloride–AlCl<sub>3</sub> ionic liquids with an appropriate alkyl chain length of the amine can serve as promising low-cost electrolytes for Al electrodeposition.","PeriodicalId":305,"journal":{"name":"Electrochimica Acta","volume":"171 1","pages":""},"PeriodicalIF":6.6,"publicationDate":"2025-01-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142924522","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}
Pub Date : 2025-01-03DOI: 10.1016/j.electacta.2025.145643
Kristijan Vidović, Samo B. Hočevar, Kumar Sarang, Ivan Konjević, Nikola Tasić, Irena Ciglenečki
Despite numerous studies addressing the complex role of surface-active substances (SAS) in cloud condensation nuclei, a significant gap exists in understanding their intrinsic importance and involvement, particularly in gas uptake and atmospheric particle growth. In this study, we advance the application of electrochemistry in this field and provide new insights into the role and impact of hydrophilic/hydrophobic SAS on the growth of atmospheric aerosol particles. We employed an innovative approach based on non-faradaic electrochemistry. A change of the measured capacitive current (dIcapacity) is caused by the adsorption of SAS on the electrode surface, which is directly proportional to the change of surface tension (dγ). The application of this new methodology, combined initially with the mercury electrode, demonstrated significantly higher sensitivity and reliability compared to other conventional tensiometric methods for measuring surface tension. Moreover, the effectiveness of this strategy was tested and validated using the environmentally friendly bismuth electrode as an excellent alternative.
{"title":"New Electrochemical Approach for Assessing Surface Tension and its Role in Atmospheric Particle Growth","authors":"Kristijan Vidović, Samo B. Hočevar, Kumar Sarang, Ivan Konjević, Nikola Tasić, Irena Ciglenečki","doi":"10.1016/j.electacta.2025.145643","DOIUrl":"https://doi.org/10.1016/j.electacta.2025.145643","url":null,"abstract":"Despite numerous studies addressing the complex role of surface-active substances (SAS) in cloud condensation nuclei, a significant gap exists in understanding their intrinsic importance and involvement, particularly in gas uptake and atmospheric particle growth. In this study, we advance the application of electrochemistry in this field and provide new insights into the role and impact of hydrophilic/hydrophobic SAS on the growth of atmospheric aerosol particles. We employed an innovative approach based on non-faradaic electrochemistry. A change of the measured capacitive current (<em>dI<sub>capacity</sub></em>) is caused by the adsorption of SAS on the electrode surface, which is directly proportional to the change of surface tension (<em>dγ</em>). The application of this new methodology, combined initially with the mercury electrode, demonstrated significantly higher sensitivity and reliability compared to other conventional tensiometric methods for measuring surface tension. Moreover, the effectiveness of this strategy was tested and validated using the environmentally friendly bismuth electrode as an excellent alternative.","PeriodicalId":305,"journal":{"name":"Electrochimica Acta","volume":"30 1","pages":""},"PeriodicalIF":6.6,"publicationDate":"2025-01-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142917770","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}
Electrocatalytic hydrodechlorination (EHDC) represents a sustainable approach to detoxifying the chlorinated organic pollutants (COPs). However, electrodes often suffer from fouling due to the ubiquitous natural organic matters (NOM) in surface water bodies. Herein we demonstrated that pre-mixing humic acid (HA) with palladium nanoparticles (Pd NPs) is an ingenious approach to address this issue. The introduction of HA improved dispersion of Pd NPs, enhanced surface hydrophilicity to promote H* generation, and increased electrostatic repulsion and steric-hinerance against NOM in solution. As a result, the as-synthesized HA0.2-Pd electrode exhibits significantly improved EHDC performance and anti-NOM poisoning ability. In the batch experiment, the HA0.2-Pd NPs achieved removal efficiencies of 91.3 and 80.8% respectively, for treating 50.0 mg L−1 of 2,4-dichlorophenol (2,4-DCP, a probe COP) from contaminated water in the absence or presence of 20 mg L−1 HA (representative of NOM) at -0.85 V vs. Ag/AgCl. Compared to that, the pure Pd/C electrode experienced a marked efficacy decline from 82.9 to 56.5% in the presence of HA. Moreover, the HA0.2-Pd/C electrode maintained a steady efficiency above 92.0% over 12 h EHDC in a continuous-flow cell, while only 60.0% for the Pd/C electrode. When subjected to contaminated natural water, the HA0.2-Pd/C electrode afforded an EHDC efficiency of 75.4%, significantly surpassing the 39.4% efficiency of Pd/C electrode.
{"title":"Pre-embedded Strategy for Anti-NOM Poisoning Performance of Palladium Nanoparticles in Electrocatalytic Dechlorination","authors":"Linpiao Cheng, Shuyue Liu, Yinan Liu, Xiangyi Tang, Mue Tang, Xinhua Xu, Xiaoshu Lv","doi":"10.1016/j.electacta.2025.145642","DOIUrl":"https://doi.org/10.1016/j.electacta.2025.145642","url":null,"abstract":"Electrocatalytic hydrodechlorination (EHDC) represents a sustainable approach to detoxifying the chlorinated organic pollutants (COPs). However, electrodes often suffer from fouling due to the ubiquitous natural organic matters (NOM) in surface water bodies. Herein we demonstrated that pre-mixing humic acid (HA) with palladium nanoparticles (Pd NPs) is an ingenious approach to address this issue. The introduction of HA improved dispersion of Pd NPs, enhanced surface hydrophilicity to promote H* generation, and increased electrostatic repulsion and steric-hinerance against NOM in solution. As a result, the as-synthesized HA<sub>0.2</sub>-Pd electrode exhibits significantly improved EHDC performance and anti-NOM poisoning ability. In the batch experiment, the HA<sub>0.2</sub>-Pd NPs achieved removal efficiencies of 91.3 and 80.8% respectively, for treating 50.0 mg L<sup>−1</sup> of 2,4-dichlorophenol (2,4-DCP, a probe COP) from contaminated water in the absence or presence of 20 mg L<sup>−1</sup> HA (representative of NOM) at -0.85 V <em>vs.</em> Ag/AgCl. Compared to that, the pure Pd/C electrode experienced a marked efficacy decline from 82.9 to 56.5% in the presence of HA. Moreover, the HA<sub>0.2</sub>-Pd/C electrode maintained a steady efficiency above 92.0% over 12 h EHDC in a continuous-flow cell, while only 60.0% for the Pd/C electrode. When subjected to contaminated natural water, the HA<sub>0.2</sub>-Pd/C electrode afforded an EHDC efficiency of 75.4%, significantly surpassing the 39.4% efficiency of Pd/C electrode.","PeriodicalId":305,"journal":{"name":"Electrochimica Acta","volume":"34 1","pages":""},"PeriodicalIF":6.6,"publicationDate":"2025-01-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142917459","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}
Pub Date : 2025-01-03DOI: 10.1016/j.electacta.2024.145592
Meng Wu, Yi Ding, Kaifeng Mei, Xinxin Yu, Kun Tang, Junwei Chen, Hui Zhang, Mingzai Wu
Dendrite proliferation and parasitic side reaction seriously deteriorate the electrochemical reversibility of zinc metal anode (ZMAs), thus impeding the commercial application of rechargeable aqueous zinc-ion batteries. Herein, a novel strategy, which enables more stable interface chemistry of ZMAs, is proposed based on the construction of a dynamic electrostatic shielding layer. Specially, the trace amount of Al3+ cations added into the ZnSO4 base-line electrolyte will preferentially adsorb onto the surface of Zn electrode and further establish a dynamic electrostatic shielding layer, which can effectively homogenize the Zn2+ cations and electric field. Consequently, the Zn nucleation energy was reduced and the Zn2+ deposition kinetic process was boosted. As a result, a long cycle life exceeding 3500 hours was observed on the ZMA deployed in symmetric Zn||Zn cell (1 mA cm-2 and 0.5 mAh cm-2) with the ZnSO4/Al3+ hybrid electrolyte, along with an average Coulombic efficiency of 99.8% in Zn||Cu cell (2 mA cm-2 and 1 mAh cm-2). Furthermore, the assembled full Zn||MnO2/CNT pouch cell with the ZnSO4/Al3+ hybrid electrolyte acquires a maximal specific capacity of 274.5 mAh g-1 and a high retention of 75% after 2000 cycles. This work offers a novel pathway for stabilizing the interface chemistry of ZMAs, thus inhibiting Zn dendrite growth for enhanced electrochemical reversibility.
{"title":"Construction of dynamic electrostatic shielding layer toward stable interface chemistry of Zn anode","authors":"Meng Wu, Yi Ding, Kaifeng Mei, Xinxin Yu, Kun Tang, Junwei Chen, Hui Zhang, Mingzai Wu","doi":"10.1016/j.electacta.2024.145592","DOIUrl":"https://doi.org/10.1016/j.electacta.2024.145592","url":null,"abstract":"Dendrite proliferation and parasitic side reaction seriously deteriorate the electrochemical reversibility of zinc metal anode (ZMAs), thus impeding the commercial application of rechargeable aqueous zinc-ion batteries. Herein, a novel strategy, which enables more stable interface chemistry of ZMAs, is proposed based on the construction of a dynamic electrostatic shielding layer. Specially, the trace amount of Al<sup>3+</sup> cations added into the ZnSO<sub>4</sub> base-line electrolyte will preferentially adsorb onto the surface of Zn electrode and further establish a dynamic electrostatic shielding layer, which can effectively homogenize the Zn<sup>2+</sup> cations and electric field. Consequently, the Zn nucleation energy was reduced and the Zn<sup>2+</sup> deposition kinetic process was boosted. As a result, a long cycle life exceeding 3500 hours was observed on the ZMA deployed in symmetric Zn||Zn cell (1 mA cm<sup>-2</sup> and 0.5 mAh cm<sup>-2</sup>) with the ZnSO<sub>4</sub>/Al<sup>3+</sup> hybrid electrolyte, along with an average Coulombic efficiency of 99.8% in Zn||Cu cell (2 mA cm<sup>-2</sup> and 1 mAh cm<sup>-2</sup>). Furthermore, the assembled full Zn||MnO<sub>2</sub>/CNT pouch cell with the ZnSO<sub>4</sub>/Al<sup>3+</sup> hybrid electrolyte acquires a maximal specific capacity of 274.5 mAh g<sup>-1</sup> and a high retention of 75% after 2000 cycles. This work offers a novel pathway for stabilizing the interface chemistry of ZMAs, thus inhibiting Zn dendrite growth for enhanced electrochemical reversibility.","PeriodicalId":305,"journal":{"name":"Electrochimica Acta","volume":"127 1","pages":""},"PeriodicalIF":6.6,"publicationDate":"2025-01-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142924528","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}
Pub Date : 2025-01-02DOI: 10.1016/j.electacta.2025.145640
Jeong Wuk Kim, Huiju Seo, Myung Jun Kim, Jae Jeong Kim
The measurement of additive concentrations in Cu electrolyte is the first step in maintaining the performance of Cu electrodeposition. The cyclic voltammetric stripping (CVS) method has been continuously used for this purpose, despite its limitations, such as low accuracy and the inability to perform in-situ monitoring. Consequently, long-term usage of Cu electrolyte carries a risk of process errors due to fluctuations in additive concentration. To address these issues, this study introduces a machine learning (ML)-based technique to extract additive concentration information from a single voltammogram, without the need for any pretreatment or sampling steps. Specifically, this ML-based technique aims to predict the concentration of 3-N,N-dimethylaminodithiocarbamoyl-1-propanesulfonic acid (DPS), an accelerator that exhibits non-linear acceleration behavior depending on its concentration. Four different algorithms—linear regression, ridge regression, random forest, and neural network models—are examined for their ability to learn the complex interaction between polyether and DPS, allowing extraction of their concentrations from a single voltammogram. This study demonstrates that neural networks are the most effective for capturing non-linear patterns in voltammograms. Additionally, our results indicate that careful selection of the potential range for training can yield an efficient ML technique by minimizing model size while maintaining high analytical accuracy.
{"title":"Quantitative analyses of DPS and PEG-PPG in Cu electrolyte using machine learning with artificial neural network","authors":"Jeong Wuk Kim, Huiju Seo, Myung Jun Kim, Jae Jeong Kim","doi":"10.1016/j.electacta.2025.145640","DOIUrl":"https://doi.org/10.1016/j.electacta.2025.145640","url":null,"abstract":"The measurement of additive concentrations in Cu electrolyte is the first step in maintaining the performance of Cu electrodeposition. The cyclic voltammetric stripping (CVS) method has been continuously used for this purpose, despite its limitations, such as low accuracy and the inability to perform in-situ monitoring. Consequently, long-term usage of Cu electrolyte carries a risk of process errors due to fluctuations in additive concentration. To address these issues, this study introduces a machine learning (ML)-based technique to extract additive concentration information from a single voltammogram, without the need for any pretreatment or sampling steps. Specifically, this ML-based technique aims to predict the concentration of 3-N,N-dimethylaminodithiocarbamoyl-1-propanesulfonic acid (DPS), an accelerator that exhibits non-linear acceleration behavior depending on its concentration. Four different algorithms—linear regression, ridge regression, random forest, and neural network models—are examined for their ability to learn the complex interaction between polyether and DPS, allowing extraction of their concentrations from a single voltammogram. This study demonstrates that neural networks are the most effective for capturing non-linear patterns in voltammograms. Additionally, our results indicate that careful selection of the potential range for training can yield an efficient ML technique by minimizing model size while maintaining high analytical accuracy.","PeriodicalId":305,"journal":{"name":"Electrochimica Acta","volume":"115 1","pages":""},"PeriodicalIF":6.6,"publicationDate":"2025-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142912038","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}
Dissolved organic matter (DOM) in aqueous environments significantly hampers the electrochemical quantification of heavy metal ions. The mechanism of DOM-induced interference remains elusive, highlighting an urgent need for the development of robust strategies to mitigate such effects and enable precise, sensitive detection of heavy metals. In this study, the interference mechanism of DOM on electrochemical detection were investigated on bismuth-based electrodes, and sodium dodecyl sulfate (SDS) was proposed as a potent agent for countering DOM interference. It reveals that the primary DOM interference originated from the reduction of heavy metal ion diffusion coefficients and hampered electron transfer rates, due to the passivation of the electrode interface. The introduction of SDS leads to micelle formation, which reduce the passivation of the electrode by DOM and enhances the diffusion of heavy metal ions through homogenization of the solution. Furthermore, with the introduction of SDS to water samples spiked with 100 ppb of Pb2+, the relative peak currents significantly increased, recovering from 7.0% up to 96.3% for Yujia Lake water, from 6.2% to 72.7% for Tangxun Lake wastewater, and from 1.9% to 30.5% for leachate (10%). This study pioneers a promising strategy to surmount DOM interference using SDS during the electrochemical detection of heavy metals in natural aqueous samples.
{"title":"Suppression of interference from dissolved organic matter using anionic surfactant for electrochemical detection of heavy metals","authors":"Wenjie Qin, Huijie Hou, Shun Gao, Yanrun Mei, Longsheng Wu, Sha Liang, Jingping Hu, Jiakuan Yang","doi":"10.1016/j.electacta.2025.145641","DOIUrl":"https://doi.org/10.1016/j.electacta.2025.145641","url":null,"abstract":"Dissolved organic matter (DOM) in aqueous environments significantly hampers the electrochemical quantification of heavy metal ions. The mechanism of DOM-induced interference remains elusive, highlighting an urgent need for the development of robust strategies to mitigate such effects and enable precise, sensitive detection of heavy metals. In this study, the interference mechanism of DOM on electrochemical detection were investigated on bismuth-based electrodes, and sodium dodecyl sulfate (SDS) was proposed as a potent agent for countering DOM interference. It reveals that the primary DOM interference originated from the reduction of heavy metal ion diffusion coefficients and hampered electron transfer rates, due to the passivation of the electrode interface. The introduction of SDS leads to micelle formation, which reduce the passivation of the electrode by DOM and enhances the diffusion of heavy metal ions through homogenization of the solution. Furthermore, with the introduction of SDS to water samples spiked with 100 ppb of Pb<sup>2+</sup>, the relative peak currents significantly increased, recovering from 7.0% up to 96.3% for Yujia Lake water, from 6.2% to 72.7% for Tangxun Lake wastewater, and from 1.9% to 30.5% for leachate (10%). This study pioneers a promising strategy to surmount DOM interference using SDS during the electrochemical detection of heavy metals in natural aqueous samples.","PeriodicalId":305,"journal":{"name":"Electrochimica Acta","volume":"71 1","pages":""},"PeriodicalIF":6.6,"publicationDate":"2025-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142912036","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}
Pub Date : 2025-01-02DOI: 10.1016/j.electacta.2025.145639
Aqueous zinc-ion batteries (ZIBs) are promising for large-scale energy storage. However, practical exploitation of ZIBs is hampered by several challen…
{"title":"γ-Valerolactone/water hybrid electrolyte enabled long-duration zinc ion batteries","authors":"","doi":"10.1016/j.electacta.2025.145639","DOIUrl":"https://doi.org/10.1016/j.electacta.2025.145639","url":null,"abstract":"Aqueous zinc-ion batteries (ZIBs) are promising for large-scale energy storage. However, practical exploitation of ZIBs is hampered by several challen…","PeriodicalId":305,"journal":{"name":"Electrochimica Acta","volume":"66 1","pages":""},"PeriodicalIF":6.6,"publicationDate":"2025-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142917524","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}
Pub Date : 2025-01-02DOI: 10.1016/j.electacta.2024.145573
Vamsi Krishna Garapati, Frederik Huld, Hanho Lee, Jacob Joseph Lamb
Physics-based electrochemical battery models are highly valuable tools in understanding the internal state of batteries and simulating their behaviour. These models elucidate the fundamental electrochemical processes involved, such as ion diffusion, and provide information about the parameters affected by electrode kinetics and electrolyte dynamics. This information is crucial for improving battery efficiency and reliability, as well as for computing voltage and state of charge profiles without the need for experimentation. Furthermore, these models assist in optimising battery design and management, thereby accelerating the development of Sodium-ion batteries (SIBs). A range of models exists for different types of batteries, from lithium-ion batteries (LIBs) to SIBs. These models vary in terms of complexity, accuracy, and computational time. This study investigates various modelling methods, encompassing detailed Doyle–Fuller–Newman Model (DFN) models that offer extensive insights, as well as simplified reduced-order models such as the Single Particle Model (SPM). These reduced-order models strike a balance between computational efficiency and precision, which is essential for real-time control of SIB behaviour under various operating conditions. Furthermore, we examine the applicability of these models in practical applications, considering their advantages and limitations.
{"title":"Perspective and comparative analysis of physics-based models for sodium-ion batteries","authors":"Vamsi Krishna Garapati, Frederik Huld, Hanho Lee, Jacob Joseph Lamb","doi":"10.1016/j.electacta.2024.145573","DOIUrl":"https://doi.org/10.1016/j.electacta.2024.145573","url":null,"abstract":"Physics-based electrochemical battery models are highly valuable tools in understanding the internal state of batteries and simulating their behaviour. These models elucidate the fundamental electrochemical processes involved, such as ion diffusion, and provide information about the parameters affected by electrode kinetics and electrolyte dynamics. This information is crucial for improving battery efficiency and reliability, as well as for computing voltage and state of charge profiles without the need for experimentation. Furthermore, these models assist in optimising battery design and management, thereby accelerating the development of Sodium-ion batteries (SIBs). A range of models exists for different types of batteries, from lithium-ion batteries (LIBs) to SIBs. These models vary in terms of complexity, accuracy, and computational time. This study investigates various modelling methods, encompassing detailed Doyle–Fuller–Newman Model (DFN) models that offer extensive insights, as well as simplified reduced-order models such as the Single Particle Model (SPM). These reduced-order models strike a balance between computational efficiency and precision, which is essential for real-time control of SIB behaviour under various operating conditions. Furthermore, we examine the applicability of these models in practical applications, considering their advantages and limitations.","PeriodicalId":305,"journal":{"name":"Electrochimica Acta","volume":"4 1","pages":""},"PeriodicalIF":6.6,"publicationDate":"2025-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142917772","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}
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