International Journal of Electrochemical Science最新文献

{"title":"Fine-tuned transfer learning and deep gated recurrent unit methods for state-of-health estimation of the whole life-cycle of lithium-ion batteries","authors":"Zhenglin Guo ,&nbsp;Jian Wang ,&nbsp;Qiang Fu ,&nbsp;Ran Xiong ,&nbsp;Sen Zhang ,&nbsp;Weihao Hu","doi":"10.1016/j.ijoes.2025.100931","DOIUrl":"10.1016/j.ijoes.2025.100931","url":null,"abstract":"<div><div>Effectively estimating the whole-life-cycle state-of-health (SOH) of lithium-ion batteries is crucial to ensure their safety and reliability. To address this need, this paper proposes a method based on fine-tuning transfer learning and deep gate recurrent unit (DGRU) to estimate the SOH of different types of lithium-ion batteries. Firstly, the DGRU model is pre-trained by extracting highly relevant health indicators (HIs) from random known lithium-ion battery dataset to capture the dynamic characteristics of SOH over aging. Then, the fine-tuning pre-trained model is applied to the dataset of other batteries through transfer learning technology, enhancing the generalization capability of the proposed model on different battery types. Experimental results show that compared with baseline methods such as single-layer gate recurrent unit (SGRU), Gaussian process regression (GPR) and convolutional neural network (CNN), the proposed method has better comprehensive performance on different datasets. Specifically, the mean square error (MSE), mean absolute percentage error (MAPE), and the maximum error (MAXE) of the fine-tuning transfer learning-based deep gate recurrent unit (FTDGRU) model on B0006 cell are only 5.52e⁻⁴%, 0.22 %, and 0.0086, respectively, and the MSE, MAPE, and MAXE on CS2_36 cell are only 2.36e⁻⁴%,1.93 % and 0.0918, respectively. This method not only improves the accuracy of SOH estimation, but also demonstrates strong adaptability and versatility, making it widely applicable to various lithium-ion battery application scenarios.</div></div>","PeriodicalId":13872,"journal":{"name":"International Journal of Electrochemical Science","volume":"20 2","pages":"Article 100931"},"PeriodicalIF":1.3,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143163353","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}

{"title":"Applications and perspectives of Ti3C2Tx MXene in electrochemical energy storage systems","authors":"Ying Jiang","doi":"10.1016/j.ijoes.2025.100948","DOIUrl":"10.1016/j.ijoes.2025.100948","url":null,"abstract":"<div><div>The rapid evolution of electrochemical energy storage systems demands advanced materials that combine high electrical conductivity, controlled surface chemistry, and structural stability. This review examines the recent developments in Ti₃C₂T_x MXene synthesis, structural properties, and applications in energy storage devices. We analyze various preparation methods, including traditional HF etching, safer fluoride-free alternatives, and emerging green synthesis routes, highlighting their impact on material quality and scalability. The review explores the critical role of surface termination groups and interlayer spacing in determining electrochemical performance, with particular emphasis on the material's exceptional electrical conductivity (up to 20,000 S/cm) and tunable work function (1.6–6.25 eV). Detailed examination of composite formation techniques and interface engineering reveals significant improvements in device performance across multiple applications, including lithium-ion batteries achieving specific capacities of 3500 mAh/g with Si composite, lithium-sulfur batteries demonstrating strong polysulfide binding energies (&gt;1.4 eV), and supercapacitors exhibiting volumetric capacitances exceeding 1000 F/cm³ . Recent breakthroughs in electrode design and material optimization have led to enhanced stability with some composite maintaining 90 % capacity retention over 2000 cycles and demonstrating rate capabilities up to 100 C in various energy storage applications. The integration of novel fabrication approaches and strategic material combinations continues to expand the potential applications of this versatile material in next-generation energy storage technologies.</div></div>","PeriodicalId":13872,"journal":{"name":"International Journal of Electrochemical Science","volume":"20 2","pages":"Article 100948"},"PeriodicalIF":1.3,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143163357","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}

{"title":"Effects of cathode enhanced cooling channels and microporous metal mesh on performance of open cathode air-cooled fuel cells","authors":"Qiao Yan,&nbsp;Guangxuan Lu,&nbsp;Shiling Li,&nbsp;Jun Xie,&nbsp;Yuchen Li","doi":"10.1016/j.ijoes.2025.100927","DOIUrl":"10.1016/j.ijoes.2025.100927","url":null,"abstract":"<div><div>Hydrothermal management balance is a key factor that restricts the output performance and commercialization process of air-cooled proton exchange membrane fuel cells (PEMFC). The optimal operating temperature range for low-temperature PEMFC is 40–50 ℃, and the appropriate amount of generated water helps optimize heat and mass transfer within the fuel cell stack, thereby improving its performance. In this study, we have designed a novel graphite bipolar plate for air-cooled fuel cells. This bipolar plate features an enhanced cooling channel between the anode and cathode, which works in conjunction with the cathode channel to significantly enhance temperature control accuracy and distribution uniformity. Compared to a bipolar plate design without an enhanced cooling channel, this design increases current density from 700 mA/cm² to 900 mA/cm² at an output voltage of 0.6 V. Additionally, by introducing a microporous metal mesh between the cathode side and membrane electrode, water retention is improved effectively while enhancing mass transfer efficiency. As a result, current density at 0.6 V can be further increased to 1200 mA/cm².</div></div>","PeriodicalId":13872,"journal":{"name":"International Journal of Electrochemical Science","volume":"20 2","pages":"Article 100927"},"PeriodicalIF":1.3,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143163348","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}

{"title":"Electrochemical behavior and electrolysis of VCl3 in molten LiCl-KCl eutectic salts on tungsten electrode","authors":"Yunlong Wei ,&nbsp;Bo Zhou ,&nbsp;Tiejian Zhu ,&nbsp;Hua Ai ,&nbsp;Feng Jiang ,&nbsp;Hao Peng ,&nbsp;Nan Ji ,&nbsp;Wei Huang ,&nbsp;Yu Gong","doi":"10.1016/j.ijoes.2025.100926","DOIUrl":"10.1016/j.ijoes.2025.100926","url":null,"abstract":"<div><div>This paper investigated the electrochemical behavior of V(III) on W electrode using cyclic voltammetry (CV), square wave voltammetry (SWV), and open circuit chronopotentiometry (OCP) at 773 K in LiCl–KCl molten melt. The results indicated that the reduction process of V ions in LiCl-KCl molten salt was a two-step reaction: V(III)→V(II)→V(0). The diffusion coefficient of V ions was determined through cyclic voltammetry, square wave voltammetry, and convolution voltammetry, with all values found to be on the order of 10⁻⁵ cm² s⁻¹. The standard rate constant <em>k</em>^<em>0</em> and the transfer coefficient <em>α</em> were also evaluated using convolutional voltammetry. Thermodynamic properties, including the Gibbs free energy of formation, standard enthalpy, and entropy of VCl₂, were calculated using open-circuit chronopotentiometry over the temperature range of 693–813 K. Electrodeposition was performed at − 2.30 V, − 2.70 V, − 2.90 V, and − 3.10 V vs. Cl₂/Cl^- on the W electrode by two- or three-electrode system and the resulting cathodic products were characterized using XRD and SEM-EDS. The main component of the deposition product was metallic vanadium. As the applied potential shifted negatively, the vanadium extraction efficiency increased. The highest extraction efficiency was more than 99.50 %, with a current efficiency of 86.37 % under the two-electrode system.</div></div>","PeriodicalId":13872,"journal":{"name":"International Journal of Electrochemical Science","volume":"20 2","pages":"Article 100926"},"PeriodicalIF":1.3,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143163356","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}

{"title":"The correlation between hydrogen permeation behavior and microstructure in L360QS pipeline steel welded joints","authors":"Jialei Ma ,&nbsp;Bingying Wang ,&nbsp;Xiao Xing ,&nbsp;Zhiwei Gao ,&nbsp;Tao Feng ,&nbsp;Enyang Liu ,&nbsp;Chen Zhang ,&nbsp;Haodong Guo ,&nbsp;Lu Yin ,&nbsp;Xinyuan Li ,&nbsp;Junze Yang","doi":"10.1016/j.ijoes.2024.100925","DOIUrl":"10.1016/j.ijoes.2024.100925","url":null,"abstract":"<div><div>In this research, the microstructure, electrochemical hydrogen permeation properties, thermal desorption spectroscopy (TDS) characteristics, hydrogen diffusion and trapping behavior in different micro-regions of L360QS pipeline welded joints were systematically investigated. The results prove that the heat-affected zone (HAZ) of the L360QS pipeline steel welded joints exhibits the highest effective hydrogen diffusion coefficient and the largest amount of diffusible hydrogen compared with those in the weld metal and base metal. The tendency of hydrogen diffusion and accumulation in the HAZ is closely related to the presence of more straight grain boundaries. The straight grain boundaries permit an increase in effective hydrogen diffusion and equilibrium hydrogen concentration. The high grain densities of base metal in fine grains would hinder hydrogen diffusion，resulting in a lower effective hydrogen diffusion coefficient. Due to the presence of polygonal ferrite, pearlite, and granular bainite with a significant number of irreversible hydrogen traps for the weld metal，it hinders hydrogen diffusion and lead to the decrease of diffusible hydrogen content. This research provides a fundamental understanding of hydrogen diffusion behavior which will support the optimization of welding processes for L360QS pipeline in hydrogen-rich environments.</div></div>","PeriodicalId":13872,"journal":{"name":"International Journal of Electrochemical Science","volume":"20 2","pages":"Article 100925"},"PeriodicalIF":1.3,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143163351","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}

{"title":"Electrochemical and theoretical studies of two amino acid ionic liquids as corrosion inhibitors for mild steel in 3.5 wt% NaCl solution","authors":"Jie Pan,&nbsp;Xian He,&nbsp;Kun Cao","doi":"10.1016/j.ijoes.2024.100916","DOIUrl":"10.1016/j.ijoes.2024.100916","url":null,"abstract":"<div><div>The inhibitory effects of two newly synthesized inhibitors, tetraethylammonium threonine amino acid ionic liquids ([N₂₂₂₂][Thr]) and choline threonine amino acid ionic liquids ([Cho][Thr]), on the corrosion of mild steel in 3.5 wt% NaCl solution were investigated. Electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization measurements were conducted for this purpose. Additionally, theoretical chemistry concepts were employed to calculate and analyze the quantum parameters of the molecules using density functional theory (DFT). The results showed that increasing the inhibitor concentration led to a significant reduction in the corrosion rate of mild steel in the 3.5 wt% NaCl solution. The inhibitive efficiency values reached 95.3 % and 96.3 % at an inhibitor concentration of 1 mmol·L⁻¹ for [N₂₂₂₂][Thr] and [Cho][Thr], respectively. The inhibition efficiency increased with higher inhibitor concentrations. Furthermore, the effect of temperature on the corrosion behavior of mild steel in the 3.5 wt% NaCl solution was studied within the temperature range of 298–328 K. Polarization plots showed that [N₂₂₂₂][Thr] and [Cho][Thr] acted as mixed type inhibitors. The adsorption mechanism of the studied inhibitors was consistent with the Langmuir isotherm model. The corroded surface has also been analyzed by SEM and XPS.</div></div>","PeriodicalId":13872,"journal":{"name":"International Journal of Electrochemical Science","volume":"20 2","pages":"Article 100916"},"PeriodicalIF":1.3,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143163349","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}

{"title":"Effect of laser cladding process parameters on the microstructure and corrosion resistance of Ni55A alloy coatings on Q235 steel","authors":"Qi Dong ,&nbsp;Tarelnik Vyatchislav Borisovich ,&nbsp;Bondarev Sergii Grigorievicth ,&nbsp;Hongfeng Wang ,&nbsp;Weiwei Song ,&nbsp;Jiafei Pu ,&nbsp;Yao Ju ,&nbsp;Shouzhen Cao","doi":"10.1016/j.ijoes.2025.100932","DOIUrl":"10.1016/j.ijoes.2025.100932","url":null,"abstract":"<div><div>This study investigated the effects of process parameters on the microstructure and corrosion resistance of laser cladding Ni55A alloy coatings on Q235 steel surfaces. X-ray diffraction, electrochemical analysis, salt spray corrosion experiments, and electron back scatter diffraction were used to study the effects of process parameters on organization and corrosion of coatings. The results show that the physical phase of the coating consists mainly of γ-(Fe,Ni) solid solution and M₂₃C₆. Compared to the base material, the corrosion resistance of coatings is improved to different degrees, with the best corrosion resistance of the coating obtained at a laser power of 1800 W and a scanning rate of 11 mm/s. This is mainly because lower laser power or higher scanning rate can reduce the heat input of the coatings, resulting in a decrease in the grain size, an increase in the percentage of recrystallized grains, and a weakening of the preferred orientation, thereby improving the corrosion resistance of the coatings.</div></div>","PeriodicalId":13872,"journal":{"name":"International Journal of Electrochemical Science","volume":"20 2","pages":"Article 100932"},"PeriodicalIF":1.3,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143163294","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}

{"title":"Advances in electrochemical sensors for paracetamol detection: Electrode materials, modifications, and analytical applications","authors":"Margarita Stoytcheva ,&nbsp;Zdravka Velkova ,&nbsp;Velizar Gochev ,&nbsp;Benjamin Valdez ,&nbsp;Mario Curiel","doi":"10.1016/j.ijoes.2024.100924","DOIUrl":"10.1016/j.ijoes.2024.100924","url":null,"abstract":"<div><div>Paracetamol, a widely used analgesic and antipyretic drug, requires precise and reliable detection methods due to its extensive use and potential for toxicity in cases of overdose. Electrochemical sensing offers an attractive approach, combining simplicity, rapid response, cost-effectiveness, and high sensitivity. This review provides a comprehensive overview of recent advancements in the electrochemical detection of paracetamol, focusing on various electrode types, including bare graphite, boron-doped diamond, pencil graphite, screen-printed, carbon paste, and glassy carbon electrodes. The modifications of these electrodes with emerging and critical materials such as nanostructured carbons, metal nanoparticles, and molecularly imprinted polymers are extensively discussed, emphasizing their impact on key analytical parameters such as sensitivity, selectivity, and detection limits. The analysis highlights the potential of these modified electrodes for applications ranging from pharmaceutical quality control to environmental and biological sample monitoring. By summarizing current progress and addressing the challenges in electrode design, this review aims to guide future developments in the field of electrochemical sensors for paracetamol detection.</div></div>","PeriodicalId":13872,"journal":{"name":"International Journal of Electrochemical Science","volume":"20 2","pages":"Article 100924"},"PeriodicalIF":1.3,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143163352","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}

{"title":"Electrophoretic techniques for rapid detection of bacterial pneumonia: Current status and future perspectives","authors":"Aiqin Zhong ,&nbsp;Zhijun Li ,&nbsp;Yiqun Song","doi":"10.1016/j.ijoes.2025.100928","DOIUrl":"10.1016/j.ijoes.2025.100928","url":null,"abstract":"<div><div>Bacterial pneumonia remains a significant global health challenge, necessitating rapid and accurate diagnostic methods for effective treatment. This review comprehensively examines the current status and future perspectives of electrophoretic techniques in bacterial pneumonia detection, highlighting their potential to address limitations of conventional diagnostic methods. Recent advances in electrophoretic platforms, including capillary electrophoresis, gel electrophoresis, and microchip-based systems, have demonstrated promising capabilities for rapid pathogen identification and characterization. These techniques offer unique advantages in terms of separation efficiency, multiplexing capability, and analytical speed. Integration with mass spectrometry, fluorescence detection, and immunological methods has further enhanced their diagnostic potential. Notable developments include automated systems capable of simultaneous detection of multiple pathogens, point-of-care devices for resource-limited settings, and sophisticated data analysis approaches incorporating machine learning algorithms. Current applications range from direct pathogen detection in clinical samples to antibiotic resistance profiling and strain typing. The review also addresses critical challenges, including sensitivity limitations, standardization requirements, and implementation costs. Emerging trends in miniaturization, microfluidic integration, and advanced materials development suggest promising directions for improving diagnostic capabilities. Recent studies have demonstrated successful applications in detecting common pneumonia-causing pathogens such as Streptococcus pneumoniae, Haemophilus influenzae, and Mycoplasma pneumoniae, with reduced analysis times and enhanced accuracy compared to traditional methods. The integration of artificial intelligence and automated analysis systems has further improved result interpretation and diagnostic reliability. While technical and economic challenges persist, ongoing developments in electrophoretic techniques show potential for transforming bacterial pneumonia diagnosis, ultimately contributing to improved patient outcomes through more rapid and precise pathogen identification.</div></div>","PeriodicalId":13872,"journal":{"name":"International Journal of Electrochemical Science","volume":"20 2","pages":"Article 100928"},"PeriodicalIF":1.3,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143163354","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}

{"title":"Designing novel 0D/1D/2D architectural CoOx/MWCNTs/rGO hierarchically porous nanocomposite for high-performance supercapacitors","authors":"Gaosheng Nie ,&nbsp;Xiongfei Sun ,&nbsp;Liyin Xu ,&nbsp;Ke Wu ,&nbsp;Zilong Wei ,&nbsp;Shuwu Liu","doi":"10.1016/j.ijoes.2025.100958","DOIUrl":"10.1016/j.ijoes.2025.100958","url":null,"abstract":"<div><div>MOF-derived cobalt oxides (CoO_x) have attracted extensive attentions due to their excellent theoretical specific capacitances, permanent porosity and controllable structures. However, the inherent poor conductivity of single-component cobalt oxide, and the structural collapse, pore loss and agglomeration during pyrolysis process are still the main factors to limit the performance of CoO_x. Structure design of 3D hierarchical porous heterostructure composites through 0D/1D/2D materials is an effective strategy for boosting the capacitive performance of CoO_x. Herein, the rationally designed 3D hierarchically porous CoO_x/MWCNTs/rGO ternary hybrid composite was constructed through high-temperature pyrolysis of a facile self-assembled 0D/1D/2D Co-MOF/MWCNTs/GO precursor. Indeed, The CoO_x/MWCNTs/rGO electrode exhibited an excellent specific capacitance of 520 F g⁻¹ at 0.5 A g⁻¹, outstanding rate capability of 80.77 % capacitance retention even at 20 A g⁻¹, and ideal durability with about 8.4 % capacitance decay after 10000 cycles. Moreover, the CoO_x/MWCNTs/rGO exhibited a maximum energy density of 14.6 Wh kg⁻¹ with a power density of 41.2 W kg⁻¹.</div></div>","PeriodicalId":13872,"journal":{"name":"International Journal of Electrochemical Science","volume":"20 4","pages":"Article 100958"},"PeriodicalIF":1.3,"publicationDate":"2025-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143454726","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}