International Journal of Electrochemical Science最新文献

{"title":"Recycling of photovoltaic silicon and graphite waste to prepare three-dimensional silicon/artificial graphite/carbon anodes for lithium-ion battery","authors":"Siyuan Du ,&nbsp;Lu Ding ,&nbsp;Shuangyu Liu ,&nbsp;Feng Qian ,&nbsp;Honglie Shen ,&nbsp;Hui Cui ,&nbsp;Chuandong Zhou ,&nbsp;Honggang Zhang ,&nbsp;Baoju Yang ,&nbsp;Dongwen Shan ,&nbsp;Juan Hong","doi":"10.1016/j.ijoes.2025.101062","DOIUrl":"10.1016/j.ijoes.2025.101062","url":null,"abstract":"<div><div>The production of silicon (Si) wafers generates substantial amounts of micron-sized, high-purity Si waste, resulting in environmental pollution and resource loss. Similarly, the manufacturing of artificial graphite (AG) components results in the generation of significant amounts of unused AG waste. This research focuses on the development of a carbon (C) coated Si/AG composite material with long cycle stability by recycling Si and AG waste. Initially, purified Si waste is combined with anhydrous ethanol and processed in a sand mill to create a Si-containing nanoslurry. Next, carbon nanotubes, polyvinylpyrrolidone, and AG waste are incorporated into the SM-nano Si, mixed, and then spray-dried. The final step involves high-temperature annealing in a hydrogen-argon atmosphere to develop a three-dimensional interpenetrating Si/AG/C structure. When used as the anode material in lithium-ion batteries, the coin cell maintains a capacity of 639 mAh g⁻¹ after 500 cycles at a current density of 500 mA g⁻¹ , achieving a capacity retention rate of 88 %. Following additional electrostatic modification, the capacity rises to 691.7 mAh g⁻¹ . This study highlights the potential of recycling Si and AG waste to produce high-performance Si/C anode materials, significantly contributing to the sustainable reuse of discarded resources.</div></div>","PeriodicalId":13872,"journal":{"name":"International Journal of Electrochemical Science","volume":"20 8","pages":"Article 101062"},"PeriodicalIF":1.3,"publicationDate":"2025-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144069760","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of pH on corrosion mechanism of two austenitic stainless steels in artificial sweat","authors":"Tingting Liu,&nbsp;Binbin Wang","doi":"10.1016/j.ijoes.2025.101065","DOIUrl":"10.1016/j.ijoes.2025.101065","url":null,"abstract":"<div><div>The sweat is highly corrosive, and its pH fluctuates in the range of 4–7.5 with different physiological conditions. In order to study the effect of sweat pH change on the corrosion behavior of two austenitic stainless steels (304 and 316 L), the failure mechanism was studied by electrochemical experiments and immersion corrosion. Metallographic study results show that the grain size of the two austenitic stainless steels is similar (∼ 16 μm), but the inclusion content (carbides and sulfides) in 304 stainless steel is higher than that in 316 L stainless steel. The results showed that the corrosion current (<em>I</em>_{<em>corr</em>}) of 304 and 316 L increased significantly with the decrease of sweat pH from 7.5 to 4.5, and <em>I</em>_{<em>corr</em>} increased by 10.2 times and 8.9 times, respectively. The results of electrochemical impedance spectroscopy show that the decrease of pH will lead to the decrease of the thickness of the passivation film on the surface of the sample, and the roughness of the passivation film increases and the uniformity decreases. Further, the results of 30-day immersion test showed that the corrosion mechanism of the samples in sweat was mainly pitting corrosion. With the decrease of pH, the loss of Cr, Ni, and Mo on the surface of the samples increased, indicating that low pH could promote the migration and loss of Cr, Ni and Mo, resulting in an increase in the degree of corrosion of the samples. The above research results can provide guidance for the design of anti-sweat corrosion materials.</div></div>","PeriodicalId":13872,"journal":{"name":"International Journal of Electrochemical Science","volume":"20 8","pages":"Article 101065"},"PeriodicalIF":1.3,"publicationDate":"2025-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144069758","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Controlled formation of GaN nanostructures through contactless photoelectrochemical etching for supercapacitor electrode applications","authors":"Yaya Ge ,&nbsp;Yihang Fan ,&nbsp;Yibiao Yang ,&nbsp;Mingda Zhang ,&nbsp;Xin Liu ,&nbsp;Binzhao Cao ,&nbsp;Yuan Tian ,&nbsp;Hongming Fei","doi":"10.1016/j.ijoes.2025.101064","DOIUrl":"10.1016/j.ijoes.2025.101064","url":null,"abstract":"<div><div>Nanostructured n-type GaN layers were fabricated using the Contactless photoelectrochemical (PEC) etching method in KOH-based solutions under ultraviolet illumination. By adjusting the KOH concentration, distinct surface morphologies were obtained. Low-concentration KOH solutions led to the formation of nanorods at dislocation sites, whereas high-concentration solutions induced interconnected etch pits. Cathodoluminescence (CL) analysis confirmed a strong correlation between the resulting nanostructures and dislocation sites. The formation mechanisms of different nanostructures were discussed. Electrochemical characterization revealed significantly enhanced performance in etched GaN samples. In particular, the GaN layer treated with 0.02 M KOH and 0.02 M K₂S₂O₈ exhibited a 16-fold increase in specific capacitance compared to the pristine GaN layer.</div></div>","PeriodicalId":13872,"journal":{"name":"International Journal of Electrochemical Science","volume":"20 8","pages":"Article 101064"},"PeriodicalIF":1.3,"publicationDate":"2025-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144124196","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Facile synthesis of spinel LiMn2O4 cathode material from nanoscale Mn3O4 for lithium-ion batteries","authors":"Bizhi Cao,&nbsp;Wei Chen,&nbsp;Haisheng Fang","doi":"10.1016/j.ijoes.2025.101071","DOIUrl":"10.1016/j.ijoes.2025.101071","url":null,"abstract":"<div><div>Mn₃O₄ nanoparticles synthesized form the room-temperature solid-state reactions between hydrated manganese salts and alkalis were explored as the starting material for preparing spinel LiMn₂O₄. Sintering temperature and lithium excess were tuned to obtain LiMn₂O₄ with optimal electrochemical performance and their effects were investigated. The results show that pure and highly crystalline LiMn₂O₄ was obtained, and the electrochemical performance is strongly affected by Mn valence, point defect and order of crystal structure as well as the particle size, which are highly dependent on sintering temperature and lithium excess. The LiMn₂O₄ with well crystalline order and competitive electrochemical performance can be readily synthesized at a moderate sintering temperature of 750 °C without excess lithium, which delivered an initial discharge capacity of 129.3 mAh/g at 0.2 C with the initial coulombic efficiency of 93.43 % and kept a capacity retention of 90.9 % after 100 cycles. Thus, nanoscale Mn₃O₄ is proved to be a promising starting material for the preparation of high quality LiMn₂O₄.</div></div>","PeriodicalId":13872,"journal":{"name":"International Journal of Electrochemical Science","volume":"20 8","pages":"Article 101071"},"PeriodicalIF":1.3,"publicationDate":"2025-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143947445","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Comparison of battery internal temperature using electrochemical impedance spectroscopy","authors":"Liang-Rui Chen ,&nbsp;Shih-Hsiung Wei ,&nbsp;Hsien-Yu Hsieh ,&nbsp;Hui-Yu Shen ,&nbsp;Chia-Hsuan Wu","doi":"10.1016/j.ijoes.2025.101070","DOIUrl":"10.1016/j.ijoes.2025.101070","url":null,"abstract":"<div><div>In a battery storage system, a reliable temperature monitoring mechanism to completely eliminate the occurrence of thermal runaway accidents is a primary concern. At present, temperature sensors are used to measure the battery surface temperature. However, since battery heat is generated by internal electrochemical reactions, measuring the battery surface temperature can result in significant difference and heat transfer delay. This discrepancy can result in delayed detection of over-temperature conditions, potentially leading to safety hazards or even fire. To address these issues, electrochemical impedance spectroscopy (EIS) has been used to estimate the battery internal temperature (BIT). In this paper, EIS-based BIT estimation methods are reviewed and classified into four methods based on the EIS parameters used: the magnitude of impedance (|Z|), the phase shift of impedance (θ), the real part of impedance (Re(Z)), and the imaginary part of impedance (Im(Z)). Guidelines for selecting the appropriate frequency for more accurate BIT estimation are provided. Furthermore, a deep neural network (DNN) was adapted to construct an EIS-based DNN (EIS-DNN) to improve BIT estimation accuracy. EIS measurements were conducted on 28 brand-new batteries at different BITs and states of charge (SoC). The experimental results indicate that the conventional |Z|-based, θ-based, Re(<em>Z</em>)-based, and Im(<em>Z</em>)-based BIT estimation methods are feasible, with average temperature estimation errors (TETavg) ranging from 1.04°C to 3.24°C. However, significant differences were observed in the maximum temperature estimation errors (TETmax). The Im(<em>Z</em>)-based method performed the best, with a TETmax of 3.42°C, whereas the Re(<em>Z</em>)-based method exhibited the worst performance, with a TETmax of 18.59°C. In contrast, the proposed EIS-DNN method achieved significantly improved accuracy, with a TETavg of approximately 0.112 °C and a TETmax of 0.98 °C. Compared to traditional methods, the TETmax is improved by 71.3 %, and the TETavg is improved by 89.2 %.</div></div>","PeriodicalId":13872,"journal":{"name":"International Journal of Electrochemical Science","volume":"20 8","pages":"Article 101070"},"PeriodicalIF":1.3,"publicationDate":"2025-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144154375","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Corrosion performance of SiC ceramic/epoxy composite coatings on carbonsteel in simulated deep-sea and atmospheric conditions","authors":"Xiaoping Guo ,&nbsp;Yungen He ,&nbsp;Chao Yao ,&nbsp;Shuan Liu","doi":"10.1016/j.ijoes.2025.101067","DOIUrl":"10.1016/j.ijoes.2025.101067","url":null,"abstract":"<div><div>A SiC ceramic/epoxy composite coating was prepared and comparatively studied in 3.5 wt% NaCl solution under atmospheric pressure and 60 MPa high hydrostatic pressure using electrochemical measurement technologies and morphology characterization. Results showed that low frequency impedance modulus (|Z|_0.01 Hz) of the coating decreased from 10¹¹ Ω·cm² to10⁸ Ω·cm² after 60-day immersion under high hydrostatic pressure, while that decreased to 10¹⁰ Ω·cm² under atmospheric pressure. The saturated water adsorption of SiC/CC under atmospheric pressure (0.182 %) was lower than that under 60 MPa (0.212 %) after 60-day immersion. SEM revealed that high hydrostatic pressure could significantly exacerbate microstructural degradation on the SiC/CC surface. The prepared SiC/CC exhibited good protective effects on mining vehicles in deep-sea environment.</div></div>","PeriodicalId":13872,"journal":{"name":"International Journal of Electrochemical Science","volume":"20 8","pages":"Article 101067"},"PeriodicalIF":1.3,"publicationDate":"2025-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144069759","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Front Matter1:Full Title Page","authors":"","doi":"10.1016/S1452-3981(25)00132-4","DOIUrl":"10.1016/S1452-3981(25)00132-4","url":null,"abstract":"","PeriodicalId":13872,"journal":{"name":"International Journal of Electrochemical Science","volume":"20 6","pages":"Article 101057"},"PeriodicalIF":1.3,"publicationDate":"2025-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143934779","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Electrocatalytic conversion of aromatic esters to ortho-aromatic ester amides using hydrophobic Cu-PTFE electrodes","authors":"Min Liu ,&nbsp;Wenjun Chen ,&nbsp;Zhizhong Su ,&nbsp;Ziyang Huang","doi":"10.1016/j.ijoes.2025.101069","DOIUrl":"10.1016/j.ijoes.2025.101069","url":null,"abstract":"<div><div>The hydrophobic Cu-PTFE electrodes were prepared using a composite plating method, with Cu as the substrate and PTFE nanoparticles suspended in the plating solution. The electrode properties, including phase composition, functional group changes, surface morphology, wettability, redox behavior, and electrochemical corrosion resistance, were characterized by different analytical ways, including XRD, FT-IR spectroscopy, scanning electron microscopy, contact angle measurements, and electrochemical tests. The results showed that based on the hydrophobicity of the Cu-PTFE electrode, the electrocatalytic reduction of 2-acetamidoaromatic esters with aromatic esters as substrates was carried out in up to 70 % yield using CH₃CN as solvent and reactant. In electrocatalytic reduction, CH₃CN can coordinate with oxygen, thereby stabilizing the ionic state of the reactants and lowering the reaction energy barrier. The high polarity solvent environment of CH₃CN can stabilize charged intermediates and promote nucleophilic attacks, and similar to Beckmann rearrangement reaction was realized to the coupling of adjacent C-N bonds and reduces the occurrence of side reactions. In addition, the use of hydrophobic electrodes as catalysts not only improves reaction efficiency but also conforms to the principles of green chemistry in its electron transfer process.</div></div>","PeriodicalId":13872,"journal":{"name":"International Journal of Electrochemical Science","volume":"20 8","pages":"Article 101069"},"PeriodicalIF":1.3,"publicationDate":"2025-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143947444","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Electrochemical sensor for niclosamide detection based on β-cyclodextrin/acetylene black nanocomposite modified electrode","authors":"Yuanhang Cao ,&nbsp;Chonggao Liang ,&nbsp;Jiale Han ,&nbsp;Aodi Luo ,&nbsp;Hongyuan Zhao ,&nbsp;Runqiang Liu","doi":"10.1016/j.ijoes.2025.101068","DOIUrl":"10.1016/j.ijoes.2025.101068","url":null,"abstract":"<div><div>An ultrasound-assisted synthesis method was employed to prepare β-cyclodextrin (β-CD) and acetylene black (AB) nanocomposites, referred to as β-CD@AB. These nanocomposites were subsequently modified onto glassy carbon electrodes (GCE) to develop electrochemical sensors for the detection of niclosamide (NA). The bead chain-like carbon network structure of AB exhibits outstanding electrical conductivity, significantly improving electrocatalytic performance. Additionally, β-CD not only enhances the dispersibility of AB but also provides superior adsorption and molecular recognition capabilities, thereby increasing the capacity of AB to capture and enrich NA molecules. The integration of β-CD and AB enabled highly sensitive NA detection, achieving a detection limit of 0.019 μM within the concentration range of 0.09–15 μM. The β-CD@AB/GCE-based analytical platform exhibited remarkable precision and accuracy in NA quantification in complex matrices, with relative normal deviations ranging from 1.26 % to 4.31 % and quantitative recovery rates between 96.87 % and 101.02 %. This electrochemical detection system demonstrated excellent operational stability when applied to actual environmental samples. The findings indicate that the sensor, developed through the modification of GCE with β-CD@AB, provides reliable performance for NA detection.</div></div>","PeriodicalId":13872,"journal":{"name":"International Journal of Electrochemical Science","volume":"20 8","pages":"Article 101068"},"PeriodicalIF":1.3,"publicationDate":"2025-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144185438","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Influence of chromium content on the hydrogen storage and corrosion behavior of Mg-Ca-Si-V-Cr amorphous alloys","authors":"Xiaohang Zhu ,&nbsp;Zhiru Zhao ,&nbsp;Xinyue Liu ,&nbsp;Wei Zheng ,&nbsp;Lianwang Zhang ,&nbsp;Quanqing Zhang","doi":"10.1016/j.ijoes.2025.101066","DOIUrl":"10.1016/j.ijoes.2025.101066","url":null,"abstract":"<div><div>To enhance the overall efficiency of Mg-based alloys, Mg-Ca-Si-V-Cr amorphous alloys with various Cr contents were prepared using the mechanical alloying method. The alloys were then characterized using X-ray diffractometer, energy dispersive X-ray fluorescence, scanning electron microscope, energy dispersive spectrometer, and electrochemical workstation to measure the mechanical property, hydrogen storage property, charge/discharge cycle stability, and corrosion resistance of the alloys. The results indicated that the Mg-Ca-Si-V-Cr magnesium-based alloys with varying Cr contents were amorphous in structure, featuring a uniform distribution of alloy particles on their surfaces. These alloys demonstrated outstanding overall performance. At a Cr content of 6 wt%, the synthesized Mg-Ca-Si-V-Cr alloy powder possessed the maximum peak load of 10.12 kN, indicating higher load-carrying capacity. The alloy achieved optimal hydrogen absorption performance, with a maximum H₂ absorption equal to 4.23 wt%. Its value dropped to 3.96 wt% after 10 min of hydrogen absorption, accounting for 94 % of the maximum absorption capacity. Moreover, the alloy displayed a distinct H₂ desorption plateau, providing a desorption pressure of approximately 0.5 MPa. The discharge capacity of the fabricated Mg-Ca-Si-V-Cr alloy initially increased from 475.67 to 495.88 mAh/g before gradually declining to 412.28 mAh/g during testing, achieving a maximum capacity retention rate of 86.78 %. At this time, magnesium-based alloy demonstrated a minimum corrosion current of 1.84 × 10⁻⁶ A/cm² and a maximum corrosion potential of −0.373 V. These results indicate that the Mg-Ca-Si-V-Cr alloy powder achieved its best overall performance at a Cr content of 6 wt%.</div></div>","PeriodicalId":13872,"journal":{"name":"International Journal of Electrochemical Science","volume":"20 8","pages":"Article 101066"},"PeriodicalIF":1.3,"publicationDate":"2025-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144138336","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}