International Journal of Electrochemical Science最新文献

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Bioelectrical oscillations and scaling behaviour of sea mud
IF 1.3 4区 化学
International Journal of Electrochemical Science Pub Date : 2025-02-28 DOI: 10.1016/j.ijoes.2025.100972
Panagiotis Mougkogiannis, Andrew Adamatzky
{"title":"Bioelectrical oscillations and scaling behaviour of sea mud","authors":"Panagiotis Mougkogiannis,&nbsp;Andrew Adamatzky","doi":"10.1016/j.ijoes.2025.100972","DOIUrl":"10.1016/j.ijoes.2025.100972","url":null,"abstract":"<div><div>This study uses a systematic approach to examine the bioelectric dynamics of marine sediments. We used an eight-channel recording system to measure bioelectric potentials. It had Pt/Ir electrodes and high-precision data acquisition (1 Hz sampling, 24-bit resolution). The setup was temperature-controlled (<span><math><mrow><mn>23</mn><mo>±</mo><mn>1</mn></mrow></math></span> °C). It had optimized electrode placement to capture spatial variations. Our analysis revealed: (1) Channel-specific amplitude variations of <span><math><mrow><mn>8</mn><mo>.</mo><mn>82</mn><mo>±</mo><mn>8</mn><mo>.</mo><mn>24</mn></mrow></math></span> mV to <span><math><mrow><mn>85</mn><mo>.</mo><mn>11</mn><mo>±</mo><mn>21</mn><mo>.</mo><mn>22</mn></mrow></math></span> mV, indicating varied bioelectric activity; (2) A consistent periodic behaviour with mean intervals of <span><math><mrow><mo>∼</mo><mn>640</mn></mrow></math></span> seconds across channels; (3) Power-law frequency scaling with exponents <span><math><mrow><mi>α</mi><mo>∈</mo><mrow><mo>[</mo><mo>−</mo><mn>1</mn><mo>.</mo><mn>49</mn><mo>,</mo><mo>−</mo><mn>0</mn><mo>.</mo><mn>84</mn><mo>]</mo></mrow></mrow></math></span>, suggesting critical dynamics; (4) Strong spatial correlations (<span><math><mrow><msub><mrow><mi>ρ</mi></mrow><mrow><mi>i</mi><mi>j</mi></mrow></msub><mo>=</mo><mn>0</mn><mo>.</mo><mn>51</mn><mo>−</mo><mn>0</mn><mo>.</mo><mn>85</mn></mrow></math></span>) indicating coordinated network behaviour. The scaling exponents from detrended fluctuation analysis (<span><math><mrow><msub><mrow><mi>α</mi></mrow><mrow><mi>D</mi><mi>F</mi><mi>A</mi></mrow></msub><mo>=</mo><mn>1</mn><mo>.</mo><mn>17</mn><mo>−</mo><mn>1</mn><mo>.</mo><mn>54</mn></mrow></math></span>) strongly support self-organized criticality. These findings suggest marine sediment is a natural info-processing network. It may have uses in unconventional computing and environmental sensing. The observed dynamics and coordination patterns show new, complex capacities. They could inspire bio-inspired computing architectures.</div></div>","PeriodicalId":13872,"journal":{"name":"International Journal of Electrochemical Science","volume":"20 5","pages":"Article 100972"},"PeriodicalIF":1.3,"publicationDate":"2025-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143519053","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
State of health and remaining useful life estimation of lithium-ion battery based on parallel deep learning methods
IF 1.3 4区 化学
International Journal of Electrochemical Science Pub Date : 2025-02-28 DOI: 10.1016/j.ijoes.2025.100988
Sichen Zhu , Chaoran Li , Peng Ruan , Shoubin Zhou , Jianke Li , Shan Luo , Menghan Li , Qiang Zhang
{"title":"State of health and remaining useful life estimation of lithium-ion battery based on parallel deep learning methods","authors":"Sichen Zhu ,&nbsp;Chaoran Li ,&nbsp;Peng Ruan ,&nbsp;Shoubin Zhou ,&nbsp;Jianke Li ,&nbsp;Shan Luo ,&nbsp;Menghan Li ,&nbsp;Qiang Zhang","doi":"10.1016/j.ijoes.2025.100988","DOIUrl":"10.1016/j.ijoes.2025.100988","url":null,"abstract":"<div><div>Accurate estimation of state of health (SOH) and remaining useful life (RUL) is the key to efficient and safe utilization of lithium-ion batteries. Neural networks are widely used to estimate SOH and RUL of lithium-ion batteries due to their strong nonlinear fitting, adaptive and self-learning abilities. Convolutional neural networks (CNN) could effectively extract the key features and recurrent neural networks (RNN) have excellent ability to capture time information in series data, but the traditional series models combining CNN and RNN may cause information leakage in time series data due to the lack of time association learning ability in CNN. In this paper, we propose a novel parallel architecture integrating temporal convolutional networks (TCN) with long short-term memory (LSTM) to address the temporal information leakage limitation in conventional series models. This synergistic design enables simultaneous extraction of spatial degradation features through TCN and dynamic temporal dependencies via LSTM, significantly enhancing SOH and RUL estimation accuracy for lithium-ion batteries compared to sequential CNN-RNN approaches. The comparison of SOH and RUL estimation performances between series and parallel models is conducted using public battery datasets sourced from the National Aeronautics and Space Administration (NASA) and Oxford university. The improvement of SOH estimation accuracy across the entire dataset is more than 29 % in dataset 1 and 37 % in dataset 2. For RUL estimation, the parallel models could achieve comparable performance to series models, with an acceptable increase in time consumption.</div></div>","PeriodicalId":13872,"journal":{"name":"International Journal of Electrochemical Science","volume":"20 5","pages":"Article 100988"},"PeriodicalIF":1.3,"publicationDate":"2025-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143550072","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
Assessment of the inhibition of carbon steel corrosion by an imidazole derivative in 1 M HCl: Experimental and theoretical approaches
IF 1.3 4区 化学
International Journal of Electrochemical Science Pub Date : 2025-02-25 DOI: 10.1016/j.ijoes.2025.100978
D. Karra , N. Timoudan , W. Daoudi , Daniil R. Bazanov , Natalia A. Lozinskaya , H. Zarrok , H. Oudda , D. Benmessaoud Left , M. Zertoubi , F. Benhiba , J. Saranya , Hatem A. Abuelizz , A. Zarrouk
{"title":"Assessment of the inhibition of carbon steel corrosion by an imidazole derivative in 1 M HCl: Experimental and theoretical approaches","authors":"D. Karra ,&nbsp;N. Timoudan ,&nbsp;W. Daoudi ,&nbsp;Daniil R. Bazanov ,&nbsp;Natalia A. Lozinskaya ,&nbsp;H. Zarrok ,&nbsp;H. Oudda ,&nbsp;D. Benmessaoud Left ,&nbsp;M. Zertoubi ,&nbsp;F. Benhiba ,&nbsp;J. Saranya ,&nbsp;Hatem A. Abuelizz ,&nbsp;A. Zarrouk","doi":"10.1016/j.ijoes.2025.100978","DOIUrl":"10.1016/j.ijoes.2025.100978","url":null,"abstract":"<div><div>This investigation examines the application of 2, 4,5-tris(2-methoxyphenyl)-4,5-dihydro-1H-imidazole (2M-C), a recently synthesized, ecologically benign imidazole derivative in terms of corrosion inhibitor for carbon-steel (C-Stl) in a 1 M HCl acid solution. The findings of this study could lead to significant advancements in the field of corrosion inhibition. The chemical and electrochemical methods used to evaluate the effectiveness of the 2M-C molecule were weight loss (WL), potentiodynamic polarization (PDP) and electrochemical impedance spectroscopy (EIS). Quantum chemical analyses were also conducted. The results revealed excellent anticorrosion properties, with maximum inhibition efficiency (IE%) reaching 98.6 % at a concentration of 10<sup>−3</sup> M. PDP analyses indicate that 2M-C acts as a mixed/inhibitor. The effects of temperature on the inhibition process suggested chemical adsorption of 2M-C onto the carbon-steel/surface, apparently following the Langmuir-adsorption model. Analyses by Scanning Electron Microscopy (SEM) coupled to Energy Dispersive X-ray (EDX) &amp; UV–visible spectroscopy confirmed the formation of a protective film that restricts the access of corrosive ions to the metal surface. Moreover, alongside the experimental findings, theoretical investigations employing Density Functional Theory (DFT) and Molecular Dynamics (MD) can elucidate the reactive sites of the molecule and enhance comprehension of the adsorption process.</div></div>","PeriodicalId":13872,"journal":{"name":"International Journal of Electrochemical Science","volume":"20 5","pages":"Article 100978"},"PeriodicalIF":1.3,"publicationDate":"2025-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143529677","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
Theoretical insights into the structural characteristics and inhibition mechanisms of quaternary ammonium salt and imidazolium-based ionic liquid: DFT and MD simulations
IF 1.3 4区 化学
International Journal of Electrochemical Science Pub Date : 2025-02-25 DOI: 10.1016/j.ijoes.2025.100979
Shuyun Cao , Yubao Cao , Yang Zhao , Hong Wang
{"title":"Theoretical insights into the structural characteristics and inhibition mechanisms of quaternary ammonium salt and imidazolium-based ionic liquid: DFT and MD simulations","authors":"Shuyun Cao ,&nbsp;Yubao Cao ,&nbsp;Yang Zhao ,&nbsp;Hong Wang","doi":"10.1016/j.ijoes.2025.100979","DOIUrl":"10.1016/j.ijoes.2025.100979","url":null,"abstract":"<div><div>Quaternary ammonium and imidazolium-based corrosion inhibitors have attracted extensive research interest due to their effectiveness. However, despite extensive investigations into the correlation between functional groups and inhibitor adsorption modes, the microscopic mechanisms underlying the corrosion inhibition on metal surfaces remain inadequately understood. This study investigates the inhibition performance of an acidic imidazolium ionic liquid (IBIL) and a quaternary ammonium derivative (QAS), each containing a ten-carbon alkyl tail, using quantum chemical calculations and molecular dynamics (MD) simulations to predict their inhibition efficiency and adsorption behavior, based on DFT and MD simulations. The results indicate that the inhibition efficiency follows the order: IBIL &gt; QAS for the Fe(100) surface in CO<sub>2</sub>-saturated 1 wt% NaCl solutions, consistent with previous experimental data. Different molecular structures of inhibitors lead to distinct adsorption behaviors on the steel surface. QAS adheres via a direct electron adsorption model, while IBIL adopts a cyclic electron adsorption model, involving electron donation and acceptance from different functional groups. This study not only enhances the understanding of inhibition mechanism but also provides valuable insights for the rational design and industrial application of high-performance inhibitors.</div></div>","PeriodicalId":13872,"journal":{"name":"International Journal of Electrochemical Science","volume":"20 5","pages":"Article 100979"},"PeriodicalIF":1.3,"publicationDate":"2025-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143534863","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
Non-linear statistical modeling and optimization of the electro-Fenton process for tramadol removal from aqueous media
IF 1.3 4区 化学
International Journal of Electrochemical Science Pub Date : 2025-02-24 DOI: 10.1016/j.ijoes.2025.100977
Wafaa Benkayba , Mohamed El Bakkali , Miloud El karbane , Aicha Guessous
{"title":"Non-linear statistical modeling and optimization of the electro-Fenton process for tramadol removal from aqueous media","authors":"Wafaa Benkayba ,&nbsp;Mohamed El Bakkali ,&nbsp;Miloud El karbane ,&nbsp;Aicha Guessous","doi":"10.1016/j.ijoes.2025.100977","DOIUrl":"10.1016/j.ijoes.2025.100977","url":null,"abstract":"<div><div>Advanced statistical models incorporating quadratic, cubic, and interaction terms were developed to predict and optimize the electro-Fenton (EF) process for tramadol (TRA) degradation and mineralization in aqueous media. The influence of key operational parameters, including Fe²⁺ concentration, current density, reaction time, and initial contaminant concentration, was systematically analyzed to capture complex, non-linear interactions governing the EF process. The models were calibrated and validated using experimental data, and they demonstrate 100 % TRA degradation within 12 min. and a 94.3 % reduction in chemical oxygen demand (COD) after 6 h. under optimal conditions. These data provided a robust foundation for predictively modeling the degradation kinetics and mineralization efficiency. The degradation model (R<sup>2</sup>=0.8825) effectively described TRA removal kinetics, accounting for saturation effects and parameter interactions to enhance predictive accuracy under varying conditions. The mineralization model (R<sup>2</sup>=0.9266) accurately represented COD reduction over time, demonstrating the critical role of current density and Fe²⁺ concentration. Additionally, the Instantaneous Current Efficiency (ICE) model (R<sup>2</sup>=0.9815) optimized operational conditions by enhancing pollutant removal efficiency while reducing energy losses associated with parasitic reactions. This study highlights the potential of advanced statistical modeling to enhance the efficiency, scalability, and industrial applicability of the EF process for pharmaceutical contaminant removal. The proposed modeling framework could be extended to optimize the treatment of other emerging contaminants, supporting the large-scale deployment of EF technology in wastewater treatment.</div></div>","PeriodicalId":13872,"journal":{"name":"International Journal of Electrochemical Science","volume":"20 5","pages":"Article 100977"},"PeriodicalIF":1.3,"publicationDate":"2025-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143550018","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
Investigating a quartz crystal microbalance sensor functionalized with MXene-Cu/Cu2O/C nanocomposites for glucose detection
IF 1.3 4区 化学
International Journal of Electrochemical Science Pub Date : 2025-02-24 DOI: 10.1016/j.ijoes.2025.100980
Asma Alshraim , Shofiur Rahman , Mahmoud Al-Gawati , Andrews Nirmala Grace , Abdullah N. Alodhayb
{"title":"Investigating a quartz crystal microbalance sensor functionalized with MXene-Cu/Cu2O/C nanocomposites for glucose detection","authors":"Asma Alshraim ,&nbsp;Shofiur Rahman ,&nbsp;Mahmoud Al-Gawati ,&nbsp;Andrews Nirmala Grace ,&nbsp;Abdullah N. Alodhayb","doi":"10.1016/j.ijoes.2025.100980","DOIUrl":"10.1016/j.ijoes.2025.100980","url":null,"abstract":"<div><div>In this study, we investigated the morphology of the MOF/MXene-coated quartz crystal microbalance (QCM) sensor surface and evaluated its hydrophilicity at different glucose concentrations (3–10 mM). The surface of the QCM sensor was coated with MXene-Cu/Cu<sub>2</sub>O/C nanocomposites to design an inexpensive sensing system for real-time monitoring of glucose. The designed QCM sensor has a good linearity in the glucose concentration range of 3–10 mM and a low detection limit of 1.70 mM. Moreover, Cu MOF/MXene exhibits high sensitivity at blood glucose concentration levels, excellent stability, rapid response, and recovery. The QCM sensor has the potential to function as a sensitive glucose probe for continuous glucose monitoring, fulfilling the requirements for glucose detection in clinical analysis, where the typical glucose level in human blood is 4–7.8 mM. Additionally, the morphology, nanostructure, and elemental composition of MXene-Cu/CuO/C nanocomposite materials were analyzed using scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDX), atomic force microscopy (AFM), and contact angle measurements.</div></div>","PeriodicalId":13872,"journal":{"name":"International Journal of Electrochemical Science","volume":"20 5","pages":"Article 100980"},"PeriodicalIF":1.3,"publicationDate":"2025-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143610385","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
Prediction of lithium-ion battery’s remaining useful life using an improved approach combining variational mode decomposition, gaussian process regression, and gated recurrent unit
IF 1.3 4区 化学
International Journal of Electrochemical Science Pub Date : 2025-02-21 DOI: 10.1016/j.ijoes.2025.100973
Ning Hongyang, Feng Nana, Yang Ming, Hui Zhouli, Wang Ruijie, Su Xiaoling
{"title":"Prediction of lithium-ion battery’s remaining useful life using an improved approach combining variational mode decomposition, gaussian process regression, and gated recurrent unit","authors":"Ning Hongyang,&nbsp;Feng Nana,&nbsp;Yang Ming,&nbsp;Hui Zhouli,&nbsp;Wang Ruijie,&nbsp;Su Xiaoling","doi":"10.1016/j.ijoes.2025.100973","DOIUrl":"10.1016/j.ijoes.2025.100973","url":null,"abstract":"<div><div>Accurately predicting the Remaining Useful Life (RUL) of batteries is of paramount importance. This paper proposes a novel hybrid approach for predicting battery RUL by integrating the improved Variational Mode Decomposition (VMD), Gaussian Process Regression (GPR), and Gated Recurrent Unit (GRU). Firstly, the Grey Wolf Optimizer (GWO) is employed to optimize the number of decomposition layers and penalty factor of VMD. The battery capacity data is then decomposed using the optimized VMD, and the correlation between the resulting Intrinsic Mode Functions (IMFs) and battery capacity is quantitatively analyzed using correlation coefficients. For the trend component IMF<sub>1</sub> and the remaining components IMF<sub>2-k</sub>, optimized GPR and GRU algorithms are utilized respectively to establish prediction models that output the respective components of battery capacity. The final prediction of the battery's RUL is obtained by superimposing these components. Finally, the NASA battery dataset is used to validate the performance of the proposed model, which is compared with other models such as standalone GRU, VMD-GRU, and VMD-GPR-GRU with a single kernel function. The results demonstrate that the proposed model can efficiently capture battery degradation trends with higher prediction accuracy and generalization capabilities compared to single models. Specifically, the model’s prediction results show that the average MAE was 0.21 %, the average RMSE was 0.36 %, and the average MAPE was 0.29 %, validating the effectiveness of the proposed research method.</div></div>","PeriodicalId":13872,"journal":{"name":"International Journal of Electrochemical Science","volume":"20 5","pages":"Article 100973"},"PeriodicalIF":1.3,"publicationDate":"2025-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143534871","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
Superelasticity and corrosion resistance of NiTi shape memory alloy in 10 wt% H2SO4 solution: The role of heat treatment
IF 1.3 4区 化学
International Journal of Electrochemical Science Pub Date : 2025-02-21 DOI: 10.1016/j.ijoes.2025.100976
Xinmei Li , Bo Jiang , Luning Zhang , Tianxiang Xue , Shuai Suo , Dongting Wu
{"title":"Superelasticity and corrosion resistance of NiTi shape memory alloy in 10 wt% H2SO4 solution: The role of heat treatment","authors":"Xinmei Li ,&nbsp;Bo Jiang ,&nbsp;Luning Zhang ,&nbsp;Tianxiang Xue ,&nbsp;Shuai Suo ,&nbsp;Dongting Wu","doi":"10.1016/j.ijoes.2025.100976","DOIUrl":"10.1016/j.ijoes.2025.100976","url":null,"abstract":"<div><div>This study examines the comprehensive effects of heat treatment processes on the microstructure, mechanical attributes, and corrosion resistance of NiTi shape memory alloys in acidic solutions. Through meticulous experimentation and analysis, several key findings were uncovered: Heat treatment enhances the volume fraction of the B19' martensite phase and refines the distribution morphology of Ti-C carbides. Such microstructural alterations yield a moderate enhancement in alloy strength, though there is a slight decline in superelasticity performance. Heat treatment profoundly elevates the corrosion resistance of NiTi shape memory alloys in dilute sulfuric acid solutions. This is evidenced by a notable rise in corrosion potential, a marked reduction in corrosion current density, an increase in charge transfer resistance, and an elevation in the flat band potential of the passivation film on the alloy surface, accompanied by a decrease in carrier concentration. These improvements in corrosion resistance largely stem from the fact that heat treatment markedly optimizes the alloy's microstructure and compositional uniformity. Consequently, this enhances the consistency and stability of the passivation film on the alloy's surface, ensuring more reliable performance of NiTi shape memory alloys in acidic conditions.</div></div>","PeriodicalId":13872,"journal":{"name":"International Journal of Electrochemical Science","volume":"20 5","pages":"Article 100976"},"PeriodicalIF":1.3,"publicationDate":"2025-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143529676","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
Microstructure and corrosion behavior of Ti–10Mo–6Zr–4Sn–3 Nb (Ti-B12) alloys as biomedical material in lactic acid-containing Hank's solution
IF 1.3 4区 化学
International Journal of Electrochemical Science Pub Date : 2025-02-18 DOI: 10.1016/j.ijoes.2025.100974
Xiangmei Wen , Shuai Hao , Suwan Liu , Jun Cheng , Yixuan He , Liang-Yu Chen
{"title":"Microstructure and corrosion behavior of Ti–10Mo–6Zr–4Sn–3 Nb (Ti-B12) alloys as biomedical material in lactic acid-containing Hank's solution","authors":"Xiangmei Wen ,&nbsp;Shuai Hao ,&nbsp;Suwan Liu ,&nbsp;Jun Cheng ,&nbsp;Yixuan He ,&nbsp;Liang-Yu Chen","doi":"10.1016/j.ijoes.2025.100974","DOIUrl":"10.1016/j.ijoes.2025.100974","url":null,"abstract":"<div><div>Due to the growing interest in Ti and its alloys in the biomedical field, Ti–10Mo–6Zr–4Sn–3 Nb (Ti-B12) alloys have promising potential for orthopedic applications. However, although much work is related to the microstructures and mechanical properties of Ti-B12 alloys, their corrosion behavior, especially in the solution containing lactic acid, is still unclear. This work investigated the microstructures and electrochemical corrosion behavior of Ti-B12 alloys in Hank's solution with varying lactic acid concentrations. As-cast, deformed, and annealed Ti-B12 alloys were used as the samples. The results show that lactic acid plays a detrimental role in the corrosion resistance of the alloys. When the lactic acid concentration of Hank's solution is 0.075 wt% (pH = 3), the Ti-B12 alloys exhibit the highest corrosion current densities of 0.055 μA·cm<sup>−2</sup>, 0.078 μA·cm<sup>−2</sup>, and 0.098 μA·cm<sup>−2</sup>, for the annealed, as-cast and deformed samples, respectively. Correspondingly, in such a situation, the impedances of the passive films formed after open circuit potential are 1.46 MΩ·cm<sup>2</sup>, 1.28 MΩ·cm<sup>2,</sup> and 0.95 MΩ·cm<sup>2</sup>, which is about two-thirds of those in the Hank's solution with pH of 7. The lactic acid dissolves the outer layer of the passive film, resulting in an increased density of oxygen vacancies. The annealed sample exhibits refined grains in the microstructure, crucial for enhancing corrosion resistance. The as-cast samples display coarser grains. The grains are broken and elongated in the rolling direction in the deformed sample, leading to inferior performance in corrosive environments. This research provides critical insights into the potential applications of Ti-B12 alloys in biomedical environments.</div></div>","PeriodicalId":13872,"journal":{"name":"International Journal of Electrochemical Science","volume":"20 4","pages":"Article 100974"},"PeriodicalIF":1.3,"publicationDate":"2025-02-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143454728","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
Effect of SnO2 doped Pt/C catalyst on the electrocatalytic oxidation of dimethyl ether
IF 1.3 4区 化学
International Journal of Electrochemical Science Pub Date : 2025-02-18 DOI: 10.1016/j.ijoes.2025.100975
Lehong Xing, Yungui Hao, Fanxu Meng, Yutong Zhao, Yue Zuo, Chenyang Sun, Xinting Shi, Yixin Wang
{"title":"Effect of SnO2 doped Pt/C catalyst on the electrocatalytic oxidation of dimethyl ether","authors":"Lehong Xing,&nbsp;Yungui Hao,&nbsp;Fanxu Meng,&nbsp;Yutong Zhao,&nbsp;Yue Zuo,&nbsp;Chenyang Sun,&nbsp;Xinting Shi,&nbsp;Yixin Wang","doi":"10.1016/j.ijoes.2025.100975","DOIUrl":"10.1016/j.ijoes.2025.100975","url":null,"abstract":"<div><div>The influence of the SnO<sub>2</sub> proportions on the activity of Pt/C+SnO<sub>2</sub> catalysts was examined. The results verified that Pt particles were evenly spread on the carriers. The Pt/C+SnO<sub>2</sub> catalysts demonstrated better electrooxidation activity than the Pt/C. The SnO<sub>2</sub> could carrier OH<sub>ads</sub> groups. The OH<sub>ads</sub> promoted the oxidation of CO<sub>ads</sub> and released the Pt active sites. The Pt/C+SnO<sub>2</sub> catalyst with 20 % (mass) SnO<sub>2</sub> demonstrated the excellent activity and stability for Di-Methyl Ether (DME) oxidation. Excessive SnO<sub>2</sub> might hide the active sites of Pt, which would lead to the decrease of catalyst performance.</div></div>","PeriodicalId":13872,"journal":{"name":"International Journal of Electrochemical Science","volume":"20 5","pages":"Article 100975"},"PeriodicalIF":1.3,"publicationDate":"2025-02-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143488268","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
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