Journal of The Electrochemical Society最新文献

An Electrochemical Biosensor Based on Nanomaterials, MOF, and Laccase for Ultra-Sensitive Quantitative Detection of Luteolin 基于纳米材料、MOF和漆酶的电化学生物传感器用于木犀草素的超灵敏定量检测

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Journal of The Electrochemical Society Pub Date : 2026-01-26 DOI: 10.1149/1945-7111/ae3d89

Fei-Yu Zhang, Guang-Hua Tong, Chao-ying Xu, Hui-Xin Zheng, Wei Nie, Sanad Abdalbagemohammedabdalsadeg Abdalbage Mohammed Abdalsadeg, Jun Hong, Bao-Lin Xiao

{"title":"An Electrochemical Biosensor Based on Nanomaterials, MOF, and Laccase for Ultra-Sensitive Quantitative Detection of Luteolin","authors":"Fei-Yu Zhang, Guang-Hua Tong, Chao-ying Xu, Hui-Xin Zheng, Wei Nie, Sanad Abdalbagemohammedabdalsadeg Abdalbage Mohammed Abdalsadeg, Jun Hong, Bao-Lin Xiao","doi":"10.1149/1945-7111/ae3d89","DOIUrl":"https://doi.org/10.1149/1945-7111/ae3d89","url":null,"abstract":"Luteolin (Lut) is a natural flavonoid with anti-inflammatory, antioxidant, and anti-tumor potential. Its dietary intake is associated with health risks, and developing highly selective detection methods is of great significance. In order to address the issue of poor selectivity of existing Lut sensors, this study constructed an electrochemical biosensor. The sensor was fabricated by modifying a glassy carbon electrode (GCE) with MWCNTs, UiO-66-NH₂ (MOF), AuNPs and laccase (Lac). By taking advantage of the high conductivity of multi-walled carbon nanotubes, the large specific surface area and enrichment effect of UiO-66-NH₂, the biocompatibility and electron transfer ability of AuNPs, as well as the biological catalytic specificity of Lac, significant performance synergy was achieved. The catalytic activity of Lac on Lut was studied by UV–vis, and the materials were characterized by electron microscopy, Fourier-transform infrared, and X-ray methods, respectively. The square wave voltammetry study demonstrated that this electrochemical sensor exhibited an excellent detection performance for Lut, with a linear detection range of 0.02–10 μM and a detection limit as low as 7.59 nM. In the actual samples (thyme, parsley, oregano) tests, the results were highly consistent with HPLC. The recovery rates after adding standards were ideal, fully demonstrating the excellent practical application potential.","PeriodicalId":17364,"journal":{"name":"Journal of The Electrochemical Society","volume":"173 3","pages":"035502-035502"},"PeriodicalIF":0.0,"publicationDate":"2026-01-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147381659","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

An Electrochemical Immunosensor Chip for Sensing C-Reactive Protein and Fibrinogen in Early Atherosclerosis 用于检测早期动脉粥样硬化中c反应蛋白和纤维蛋白原的电化学免疫传感器芯片

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Journal of The Electrochemical Society Pub Date : 2026-01-20 DOI: 10.1149/1945-7111/ae3b16

Jiaying Sun, Zhengdi Shi, Joseph Benjamin Holman, Junbo Wang, Bensheng Qiu, Chengpan Li, Weiping Ding, Anqing Zhang

{"title":"An Electrochemical Immunosensor Chip for Sensing C-Reactive Protein and Fibrinogen in Early Atherosclerosis","authors":"Jiaying Sun, Zhengdi Shi, Joseph Benjamin Holman, Junbo Wang, Bensheng Qiu, Chengpan Li, Weiping Ding, Anqing Zhang","doi":"10.1149/1945-7111/ae3b16","DOIUrl":"https://doi.org/10.1149/1945-7111/ae3b16","url":null,"abstract":"Atherosclerosis is a major global health issue, and its early screening can be facilitated by inflammatory biomarkers such as C-reactive protein (CRP) and fibrinogen (FIB). However, conventional detection typically requires specialized instruments, which limits point-of-care testing and decentralized healthcare. Herein, we developed an electrochemical immunosensor chip for the simultaneous screening of CRP and FIB. The chip integrates plasma separation driven by microfluidic capillary forces, enabling passive plasma extraction from whole blood and its delivery to the dual-analyte detection site, where quantitative and electrochemical sensing is performed using a self-designed constant potentiostat. The chip demonstrates favorable anti-interference capability, stability, and sensitivity with limits of detection of 2.45 × 10 –6 mg l −1 for the CRP immunosensor and 0.0112 mg l −1 for the FIB immunosensor. Its performance was validated using rabbit plasma and human whole blood. This study provides a portable platform for simultaneous biomarker screening, promoting the development of personalized point-of-care testing.","PeriodicalId":17364,"journal":{"name":"Journal of The Electrochemical Society","volume":"173 3","pages":"037502-037502"},"PeriodicalIF":0.0,"publicationDate":"2026-01-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147381611","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Electrodeposition of Tungsten Coatings from Scheelite by Molten Salt Electrolysis 白钨矿熔盐电解电沉积钨涂层的研究

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Journal of The Electrochemical Society Pub Date : 2025-12-30 DOI: 10.1149/1945-7111/ae320c

Fuzheng Tian, Liwen Zhang, Xiaoli Xi, Zuoren Nie

{"title":"Electrodeposition of Tungsten Coatings from Scheelite by Molten Salt Electrolysis","authors":"Fuzheng Tian, Liwen Zhang, Xiaoli Xi, Zuoren Nie","doi":"10.1149/1945-7111/ae320c","DOIUrl":"https://doi.org/10.1149/1945-7111/ae320c","url":null,"abstract":"A molten-salt electrodeposition method based on the CaCl 2 –scheelite system was developed to prepare dense and phase-pure tungsten coatings on nickel substrates. Cyclic voltammetry (CV) and square-wave voltammetry (SWV) revealed the reducibility sequence of metal ions in molten CaCl 2 as Fe(III) → Mo(VI) → W(VI) → Ti(IV) → Al(III). The optimal cell-voltage range of −0.86 to −1.17 V enabled selective removal of Fe while preventing co-reduction of tungsten. After impurity removal at −1.00 V for 1.25 h, WO 4 2− in the CaCl 2 –scheelite melt underwent a two-step, six-electron reduction under diffusion control, promoting compact nucleation. Electrolysis at 1123 K and 10 mA cm −2 for 5 h produced a uniform, defect-free tungsten coating with strong adhesion to the Ni substrate. The coating thickness followed a diffusion-controlled growth model. This study demonstrates a simple, green, and low-cost electrochemical approach for producing high-quality tungsten coatings from natural scheelite resources. This study demonstrates a simple, green, and low-cost electrochemical approach for producing high-quality tungsten coatings from natural scheelite resources, offering significantly enhanced hardness and corrosion resistance for Ni-based components.","PeriodicalId":17364,"journal":{"name":"Journal of The Electrochemical Society","volume":"173 2","pages":"023503-023503"},"PeriodicalIF":0.0,"publicationDate":"2025-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147918684","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Balancing Electrochromic and Pseudocapacitive Properties in WO ₃ -Based Electrochromic Supercapacitors via Elemental Doping 通过元素掺杂平衡wo3基电致变色超级电容器的电致变色和假电容性能

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Journal of The Electrochemical Society Pub Date : 2025-12-18 DOI: 10.1149/1945-7111/ae2f30

Jun-Hu Liu, Wei‐Bin Zhang

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Morphological and Microstructural Control of Copper Foil via Additive-Driven Electrodeposition 添加剂驱动电沉积技术对铜箔形貌和微观结构的控制

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Journal of The Electrochemical Society Pub Date : 2025-12-01 DOI: 10.1149/1945-7111/ae2a76

Jinbiao Yang, Bairui Qi, Zejun Wang, Xiao Zhu

{"title":"Morphological and Microstructural Control of Copper Foil via Additive-Driven Electrodeposition","authors":"Jinbiao Yang, Bairui Qi, Zejun Wang, Xiao Zhu","doi":"10.1149/1945-7111/ae2a76","DOIUrl":"https://doi.org/10.1149/1945-7111/ae2a76","url":null,"abstract":"Copper foil, with its unique properties and versatile applications, is a promising candidate for catalytic conversion and energy utilization, with electrodeposition offering a strategic means to enhance its performance. Additives are crucial for optimizing copper foil properties but face challenges due to complex interfacial reactions and varying diffusion activation energies. Here, we focus on systematically investigating the individual effects of selected typical additives, including chloride ions (Cl − ), polyethylene glycol (PEG) and gelatin, to optimize the performance of copper foil. Compared to Cl − and PEG, gelatin more effectively improved the tensile strength and surface quality, and reduced the surface roughness of the copper foil at specific concentrations. Specifically, the samples prepared with the addition of gelatin (10 mg l −1 ) exhibit the best mechanical properties, achieving a tensile strength of 298 MPa and an elongation of 5.0% for the copper foils. The enhanced properties of the copper foil are attributed to the refinement of the grain structure, increased twin density, and reduced thickness of twin lamellae. The results are expected to provide guidelines to optimize copper foil properties through additive selection and concentration tuning, laying a foundation for enhancing nanomaterial performance in catalysis and energy utilization.","PeriodicalId":17364,"journal":{"name":"Journal of The Electrochemical Society","volume":"172 12","pages":"122506-122506"},"PeriodicalIF":0.0,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147894987","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Synergistic Enhancement of Waste Tire-Derived Carbon Co-Doped with Heteroatoms via Ionic Liquid Modification for Sodium-Ion Battery Anodes 离子液体改性对废轮胎衍生碳与杂原子共掺杂钠离子电池阳极的增效增强作用

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Journal of The Electrochemical Society Pub Date : 2025-12-01 DOI: 10.1149/1945-7111/ae2f31

Haiyang Yu, Ishioma Laurene Egun, Rong Wang, C. Zou, Yiwu Zheng, Yanhui Zhang, Zhengfei Chen

{"title":"Synergistic Enhancement of Waste Tire-Derived Carbon Co-Doped with Heteroatoms via Ionic Liquid Modification for Sodium-Ion Battery Anodes","authors":"Haiyang Yu, Ishioma Laurene Egun, Rong Wang, C. Zou, Yiwu Zheng, Yanhui Zhang, Zhengfei Chen","doi":"10.1149/1945-7111/ae2f31","DOIUrl":"https://doi.org/10.1149/1945-7111/ae2f31","url":null,"abstract":"Sodium-ion batteries (SIBs) have emerged as promising alternatives to lithium-ion batteries owing to their low cost and similar electrochemical operating principles. However, the larger ionic radius of sodium ions restricts their transport kinetics within conventional anode materials. Carbon materials with expanded interlayer spacing, disordered structures, and heteroatom doping are considered strong anode candidates, yet scalable and sustainable routes for producing such carbons remain challenging. Here, waste tire particles were combined with various anionic imidazolium-based ionic liquids ([BMIM]Br, [BMIM]PF 6 , [BMIM]BF 4 ) and converted into carbon materials via a one-step carbonization process. This approach enabled synthesis of multi-heteroatom-doped (N, Br, B, P, and F) waste-tire-derived carbons (TCs), which were characterized and evaluated as SIB anodes. Ionic liquid incorporation effectively induced in situ heteroatom doping and expanded interlayer spacing, thereby enhancing Na + storage behavior. Among the samples, TC-[BMIM]Br exhibited the highest nitrogen content (4.08%), delivered the highest initial coulombic efficiency (52.34%), and demonstrated excellent cycling stability, retaining 151.2 mAh g −1 after 200 cycles at 50 mA g −1 . In contrast, TC-[BMIM]BF 4 showed superior rate capability, achieving 103.0 mAh g −1 at 1000 mA g −1 . This presents a sustainable strategy for high-value reuse of waste tires and highlights the potential of ionic liquids as structural and chemical modulators for developing high-performance carbon anodes for SIBs.","PeriodicalId":17364,"journal":{"name":"Journal of The Electrochemical Society","volume":"172 12","pages":"120529-120529"},"PeriodicalIF":0.0,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147891888","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Research on the Performance of Wide Temperature Range Fast Charging and Long Life Lithium-Ion Batteries 宽温度范围快速充电长寿命锂离子电池性能研究

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Journal of The Electrochemical Society Pub Date : 2025-12-01 DOI: 10.1149/1945-7111/ae2f04

Y.X. Chen, Xu Liang, Cuijun Tian, Congjie Wang, Jun Tian, Kai Li, Facheng Wang

{"title":"Research on the Performance of Wide Temperature Range Fast Charging and Long Life Lithium-Ion Batteries","authors":"Y.X. Chen, Xu Liang, Cuijun Tian, Congjie Wang, Jun Tian, Kai Li, Facheng Wang","doi":"10.1149/1945-7111/ae2f04","DOIUrl":"https://doi.org/10.1149/1945-7111/ae2f04","url":null,"abstract":"To address the challenges found in the use of lithium-ion batteries at both high and low temperatures, and in response to the demand for wide-temperature range lithium-ion batteries in certain applications, a ternary lithium-ion battery was developed. The research was carried out through the modification of graphite anodes and electrolytes to break through the performance barriers of lithium-ion batteries under wide temperature range conditions. In this study, using 200 Wh kg −1 ternary lithium-ion cells and 3S6P modules as prototypes, we modified graphite anodes and electrolytes to enhance performance. Innovations include graphite anode coating and high-conductivity electrolytes. Rate, cycle, vibration, and thermal shock tests were conducted. Results show that at 25 °C and 20 C, the single cell retains 95.24% of its discharge capacity. The module exhibits strong wide-temperature-range performance: at −5 °C and 0.2 C, discharge capacity retention is 84.8%, and at 55 °C and 1 C, it reaches 99.4%. These batteries have been verified in high/low-temperature and vibration environments, achieving leading performance.","PeriodicalId":17364,"journal":{"name":"Journal of The Electrochemical Society","volume":"172 12","pages":"120532-120532"},"PeriodicalIF":0.0,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147920506","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Optimization of Self-Healing Components in the UPY-PETEA-LAGP Composite Electrolyte for Solid-State Lithium Batteries 固态锂电池用UPY-PETEA-LAGP复合电解质自修复组分的优化

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Journal of The Electrochemical Society Pub Date : 2025-11-25 DOI: 10.1149/1945-7111/ae2401

Zetong Liu, L.J. Song, Huan Li, Kongying Zhu, X.J. Liu, Qiang Xu

{"title":"Optimization of Self-Healing Components in the UPY-PETEA-LAGP Composite Electrolyte for Solid-State Lithium Batteries","authors":"Zetong Liu, L.J. Song, Huan Li, Kongying Zhu, X.J. Liu, Qiang Xu","doi":"10.1149/1945-7111/ae2401","DOIUrl":"https://doi.org/10.1149/1945-7111/ae2401","url":null,"abstract":"Solid-state electrolytes with self-healing capability to prevent mechanical damage can enhance the safety and prolong service life for solid-state lithium metal batteries (SSLMBs). However, the self-healing components inside polymer electrolyte remain largely unexplored. In this work, a novel self-healing composite electrolyte of UPY-PETEA-LAGP was obtained by way of a simple thermal polymerization method. This self-healing composite electrolyte is composed of the self-healing component with quadrupole hydrogen bonds, lithium salt complex, and lithium-conductor particles. The optimized electrolyte exhibits a room temperature ionic conductivity of 7.01 × 10 –4 S cm −1 , an electrochemical window of 4.75 V and a thermal decomposing temperature of 324 °C. Coupling this electrolyte with LiFePO 4 cathode, the full battery retains a high discharge capacity of 119.8 mAh g −1 at 0.2 C after 100 cycles, with a high capacity retention rate of 75.1%. The electrolyte can achieve self-healing process after cutting in 4 h at 60 °C. The batteries assembled with the healed UPY-PETEA-LAGP electrolyte reveals a similar cyclic performance after 50 cycles at 0.2 C. This work offers new tactics to explore high-performance self-healing composite electrolytes for solid-state lithium batteries.","PeriodicalId":17364,"journal":{"name":"Journal of The Electrochemical Society","volume":"172 12","pages":"120506-120506"},"PeriodicalIF":0.0,"publicationDate":"2025-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147894780","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Boosting the Electrocatalytic Activity of Cobaltite Nanostructures by Zn Substitution in Tetrahedral Positions for Ultrahigh-Sensitive Electrochemical Detection of Small Dopamine Molecule in Biofluid Samples: Insights from Both Experimental and Density Functional Theory Approaches 通过四面体位置的锌取代提高钴酸盐纳米结构的电催化活性，用于生物流体样品中小多巴胺分子的超高灵敏度电化学检测：来自实验和密度泛函理论方法的见解

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Journal of The Electrochemical Society Pub Date : 2025-11-01 DOI: 10.1149/1945-7111/ae1cf2

Vu Thi Huong, Thi Lan Huong Phung, Nguyễn Ngọc Huyền, Ngo Xuan Dinh, Anh‐Tuan Le

{"title":"Boosting the Electrocatalytic Activity of Cobaltite Nanostructures by Zn Substitution in Tetrahedral Positions for Ultrahigh-Sensitive Electrochemical Detection of Small Dopamine Molecule in Biofluid Samples: Insights from Both Experimental and Density Functional Theory Approaches","authors":"Vu Thi Huong, Thi Lan Huong Phung, Nguyễn Ngọc Huyền, Ngo Xuan Dinh, Anh‐Tuan Le","doi":"10.1149/1945-7111/ae1cf2","DOIUrl":"https://doi.org/10.1149/1945-7111/ae1cf2","url":null,"abstract":"The adjustment of active metal ion centers and electronic structures for boosting the electrocatalytic activity of spinel oxide nanostructures is considered an efficient strategy for developing the advanced high-performance electrochemical sensors. Here, ZnCo 2 O 4 (ZCO-NPs) and Co 3 O 4 nanoparticles with a tendency to self-assembly into 1D nanostructure were prepared by a one-pot microwave-assisted hydrothermal method, and evaluated the electrochemical sensing performance towards small dopamine (DA) molecule in biofluid samples. The physicochemical properties were systematically studied by combining experiments and density functional theory (DFT) calculation. The DFT calculation results indicate the ZnCo 2 O 4 possesses the strongest affinity for dopamine amongst all three tested biomolecules (ascorbic acid, dopamine, uric acid), while Co 3 O 4 shows a higher affinity for ascorbic acid. Benefiting from the adjustment of surface catalyst centers and electronic structures induced by Zn substitution, the ZCO-NPs/SPE exhibited an approximate 36.6-fold increased electrochemical sensitivity towards DA than that of Co 3 O 4 -NPs. The ZCO-NPs-based electrochemical sensors also displayed outstanding performance in detection of DA with a detection limit as low as 56 nM, and reaching an electrochemical sensitivity of 5.2 μAμM −1 cm −2 . This work provides an innovative strategy based on reliable theoretical and experimental basis for the electronic structural regulation of spinel oxide nanostructures for ultrasensitive electrochemical sensing of small molecules.","PeriodicalId":17364,"journal":{"name":"Journal of The Electrochemical Society","volume":"172 11","pages":"117503-117503"},"PeriodicalIF":0.0,"publicationDate":"2025-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147907469","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Impact of the Cyclic-to-Linear Carbonate Ratio in EC-DEC-DMC Electrolytes on the Low-Temperature Performance of Sodium-Ion Batteries Comprising Metallic Sodium and Intercalation-Type Electrodes EC-DEC-DMC电解液中循环-线性碳酸盐比对含金属钠和插层型电极的钠离子电池低温性能的影响

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Journal of The Electrochemical Society Pub Date : 2025-11-01 DOI: 10.1149/1945-7111/ae1e36

Д. С. Луценко, Ekaterina V. Belova, Maxim V. Zakharkin, Oleg A. Drozhzhin, Evgeny V. Antipov

{"title":"Impact of the Cyclic-to-Linear Carbonate Ratio in EC-DEC-DMC Electrolytes on the Low-Temperature Performance of Sodium-Ion Batteries Comprising Metallic Sodium and Intercalation-Type Electrodes","authors":"Д. С. Луценко, Ekaterina V. Belova, Maxim V. Zakharkin, Oleg A. Drozhzhin, Evgeny V. Antipov","doi":"10.1149/1945-7111/ae1e36","DOIUrl":"https://doi.org/10.1149/1945-7111/ae1e36","url":null,"abstract":"The low-temperature properties of sodium-ion electrolytes based on 1 M NaPF 6 solutions in EC-DEC-DMC (2:1:1 and 1:1:1 by volume) were studied. The data on phase transitions obtained from visual experiments and DSC studies were compared with the results of electrochemical experiments using steel (St), metallic sodium (Na), and NASICON-type active materials (NVP, NTP) electrodes. The specific conductivity of the “2:1:1” electrolyte, although initially slightly higher than that of the “1:1:1,” decreases sharply upon cooling and at −40 °C is ≈0.5 mS cm −1 vs ≈1.5 mS cm −1 for the “1:1:1.” However, the capacities of NVP-Na half-cells in both electrolytes are almost identical down to −40 °C. Studies of symmetrical cells showed that the main contributor to polarization loss is the sodium-electrolyte interface. Both electrolytes behave similarly with respect to metallic sodium. However, in the case of NVP-NVP cells, the charge transfer resistance in case of “1:1:1” electrolyte was lower on cooling than for the “2:1:1.” NVP-NTP full cells additionally demonstrated an advantage of the “1:1:1” system compared to “2:1:1” at low temperatures. At −40 °С, the cell with “1:1:1” electrolyte demonstrated retention of 75% of the room-temperature capacity, while in the case of “2:1:1” this value was slightly more than 50%.","PeriodicalId":17364,"journal":{"name":"Journal of The Electrochemical Society","volume":"172 11","pages":"110543-110543"},"PeriodicalIF":0.0,"publicationDate":"2025-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147921429","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0