Journal of The Electrochemical Society最新文献_第3页

Tannic Acid–Iron Assembly Films for Electrochemical Sensing of Dopamine 用于多巴胺电化学传感的单宁酸-铁组装膜

4区工程技术

Journal of The Electrochemical Society Pub Date : 2025-07-01 DOI: 10.1149/1945-7111/adfd8c

Jingyuan Li, Meng Lin, Xingcen Liu

{"title":"Tannic Acid–Iron Assembly Films for Electrochemical Sensing of Dopamine","authors":"Jingyuan Li, Meng Lin, Xingcen Liu","doi":"10.1149/1945-7111/adfd8c","DOIUrl":"https://doi.org/10.1149/1945-7111/adfd8c","url":null,"abstract":"Tannic acid contains a high density of catechol groups, which enable strong interactions with metal ions for the formation of adhesive assembly films. The metal-polyphenol structure formed by tannic acid with metal ions has the advantages of green environmental protection and strong adhesion. In this work, a tannic acid-iron film modified electrode was prepared by a one-step self-assembly method in which ferric chloride hexahydrate and tannic acid were used as reactants. Ultraviolet-visible absorption spectroscopy, scanning electron microscopy, X-ray photoelectron spectroscopy, and infrared spectroscopy were used to characterize the structure and morphology of the tannic acid-iron films. Differential pulse voltammetry was used to evaluate the electrochemical sensing performance of the tannic acid-iron film modified electrode towards dopamine. In the range of 450 μM-4 mM, the response current of the modified electrode has a good linear relationship with the dopamine concentration. An anti-interference test of the modified electrode was performed in an electrolyte containing ascorbic acid and uric acid. The electrode has good anti-interference performance. The successful construction of this sensor provides new insights into the research and design of dopamine electrochemical sensors.","PeriodicalId":17364,"journal":{"name":"Journal of The Electrochemical Society","volume":"172 8","pages":"087517-087517"},"PeriodicalIF":0.0,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147894963","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: 3

PCB-C⁴D Coupled with Activated Carbon-Barrier Paper-Based Microfluidic Sampling for Liquid Conductivity Detection with Improved Efficiency and Reduced Reagent Consumption PCB-C4D耦合活性炭屏障纸基微流控采样用于液体电导率检测，提高了效率，减少了试剂消耗

4区工程技术

Journal of The Electrochemical Society Pub Date : 2025-07-01 DOI: 10.1149/1945-7111/adeb2f

Mingpeng Yang, Chaofan Wang, Mingyi Cao

{"title":"PCB-C4D Coupled with Activated Carbon-Barrier Paper-Based Microfluidic Sampling for Liquid Conductivity Detection with Improved Efficiency and Reduced Reagent Consumption","authors":"Mingpeng Yang, Chaofan Wang, Mingyi Cao","doi":"10.1149/1945-7111/adeb2f","DOIUrl":"https://doi.org/10.1149/1945-7111/adeb2f","url":null,"abstract":"Liquid conductivity detection is a vital analytical technique for evaluating ionic composition in solutions, with broad applications in food safety, water quality monitoring, and agricultural analysis. This study introduces an innovative detection system that combines printed circuit board capacitively coupled contactless conductivity detection (PCB-C 4 D) with paper-based microfluidics modified by an activated carbon barrier. The barrier, integrated into the microfluidic channel through material engineering, effectively confines impurity particles while enabling capillary-driven flow through dual pathways: cellulose substrates and activated carbon. Leveraging activated carbon’s adsorption properties, the system achieves synergistic impurity removal, enhancing filtration efficiency and detection accuracy. Key optimizations included an activated carbon-to-cellulose ratio of 1.2:3 g and barrier dimensions (height: 0.4 mm; length: 3 mm), yielding a 60% reduction in sample consumption (8 μL), 4 s filtration speed, and high repeatability (RSD <0.86%, n = 6) with a detection limit of 4.98 μS cm⁻¹. A modular portable device was developed, integrating a detachable paper chip holder with PCB-C 4 D sensors for field applications. Practical robustness was validated through on-site analysis of complex matrices demonstrating rapid, reliable performance. This work advances paper-based conductivity detection by addressing filtration limitations in raw sample analysis, providing a cost-effective route to real-time in situ detection.","PeriodicalId":17364,"journal":{"name":"Journal of The Electrochemical Society","volume":"172 7","pages":"077510-077510"},"PeriodicalIF":0.0,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147909550","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

CO₂ Capture from Simulated Martian Atmosphere for Electrolytic Co-Production of Carbon and Oxygen Using Li₂CO₃-CaCO₃ Molten Salts 利用Li2CO3-CaCO3熔盐从模拟火星大气中捕获二氧化碳以实现碳和氧的电解联产

4区工程技术

Journal of The Electrochemical Society Pub Date : 2025-07-01 DOI: 10.1149/1945-7111/adfb33

Zihao Xu, Fanghao Zhang, Li Liu, Jiayu Dai, Ziran Zhao, Yongjun Wang, Aimin Liu, Zhongning Shi

{"title":"CO2 Capture from Simulated Martian Atmosphere for Electrolytic Co-Production of Carbon and Oxygen Using Li2CO3-CaCO3 Molten Salts","authors":"Zihao Xu, Fanghao Zhang, Li Liu, Jiayu Dai, Ziran Zhao, Yongjun Wang, Aimin Liu, Zhongning Shi","doi":"10.1149/1945-7111/adfb33","DOIUrl":"https://doi.org/10.1149/1945-7111/adfb33","url":null,"abstract":"This study employs Li 2 CO 3 -CaCO 3 molten salt for CO 2 capture from simulated Martian atmosphere (96% CO 2 , 2% N 2 , 2% Ar) with simultaneous electrochemical conversion to carbon, carbon monoxide, and oxygen. Using an Fe-Ni alloy inert anode, we systematically investigated the reduction mechanism of CO 3 2− at the cathode, corrosion behavior of the anode, oxygen evolution reactions, and temperature-dependent product distributions. Results from cyclic voltammetry demonstrate that cathodic reduction of CO 3 2− constitutes a diffusion-controlled irreversible process. Below 900 °C, CO 3 2− undergoes preferential reduction to solid carbon, where electrolysis at 880 °C yields maximally graphitized carbon with an I D /I G ratio of 0.35. Above 900 °C, CO formation dominates the reduction process, accounting for 36.5% of cathode gas at 930 °C. The Fe-Ni alloy anode exhibits exceptional stability in molten salt, forming a protective Fe 2 O 3 -NiFe 2 O 4 composite oxide layer during electrolysis that effectively safeguards the substrate. During anodic reactions, O 2− discharge precedes CO 3 2− oxidation, governed by O 2− concentration gradients and diffusion kinetics within the molten salt, causing O 2 concentration in the anode gas to increase with temperature until peaking at 83% at 880 °C before declining markedly above 900 °C.","PeriodicalId":17364,"journal":{"name":"Journal of The Electrochemical Society","volume":"172 8","pages":"082504-082504"},"PeriodicalIF":0.0,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://iopscience.iop.org/article/10.1149/1945-7111/adfb33/pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147332341","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Synergistic Regulation of Sn-Ag Bump Electrodeposition Using Ternary Additives for Enhanced Flatness and Coplanarity 用三元添加剂协同调节Sn-Ag凸点电沉积的平整度和共平面性

4区工程技术

Journal of The Electrochemical Society Pub Date : 2025-07-01 DOI: 10.1149/1945-7111/adf671

Lin Zheng, F.F. Huang, Jiaxuan Ren, Mingliang Huang

{"title":"Synergistic Regulation of Sn-Ag Bump Electrodeposition Using Ternary Additives for Enhanced Flatness and Coplanarity","authors":"Lin Zheng, F.F. Huang, Jiaxuan Ren, Mingliang Huang","doi":"10.1149/1945-7111/adf671","DOIUrl":"https://doi.org/10.1149/1945-7111/adf671","url":null,"abstract":"A ternary additive system (morin, cinnamaldehyde, and cuminaldehyde) was developed to fabricate Sn-Ag bumps with high flatness (<5%) and coplanarity (<5%) under high-current-density electrodeposition (8 ASD). Cyclic voltammetry revealed distinct potential-dependent adsorption behavior: morin preferentially adsorbed at relative positive potentials (−0.44 to −0.60 V), inducing −160 mV shift in onset electrodeposition potential (−0.60 V) compared to that without additives (−0.44 V), which enhanced nucleation site density and promoted grain refinement. In contrast, cinnamaldehyde and cuminaldehyde adsorbed predominantly at more negative potentials (−0.50 to −0.80 V and −0.55 to −0.80 V, respectively). This enabled their adsorption at the edge and tip of bumps, thereby achieving leveling effects by selectively suppressing deposition at protrusions. Convective diffusion amplified the cinnamaldehyde adsorption at the edge and tip while suppressing cuminaldehyde adsorption. Chronopotentiometric analyses further elucidated the synergistic regulation mechanism. At 8 ASD, the adsorption of morin shifted the electrodeposition potential negatively, enabling subsequent adsorption of cinnamaldehyde and cuminaldehyde. Consequently, electrodeposition at relative negative potentials and rapid diffusion regions was suppressed, yielding fine-grained structures alongside superior flatness and coplanarity.","PeriodicalId":17364,"journal":{"name":"Journal of The Electrochemical Society","volume":"172 8","pages":"082501-082501"},"PeriodicalIF":0.0,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147901667","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

p–n Junction Heterostructures Mesoporous Yeast Cr₂O₃-TiO₂ for Electrochemical Sensing miRNA p-n结异质结构介孔酵母Cr2O3-TiO2电化学传感miRNA

4区工程技术

Journal of The Electrochemical Society Pub Date : 2025-07-01 DOI: 10.1149/1945-7111/adf25b

Jingjie Cui, Zichen Peng

引用次数: 0

Electrochemical and Kinetic Analysis of Lu(III) Extraction by Liquid Ga Electrode in NaCl-CaCl₂ Melt 液态Ga电极在NaCl-CaCl2熔体中萃取Lu（III）的电化学及动力学分析

4区工程技术

Journal of The Electrochemical Society Pub Date : 2025-07-01 DOI: 10.1149/1945-7111/adeb2d

Bo Zhou, Yunlong Wei, Kai Zhang, Feng Jiang, Tiejian Zhu, Rongrong Cui, Hua Ai, Nan Ji, Wei Huang, Yu Gong

{"title":"Electrochemical and Kinetic Analysis of Lu(III) Extraction by Liquid Ga Electrode in NaCl-CaCl2 Melt","authors":"Bo Zhou, Yunlong Wei, Kai Zhang, Feng Jiang, Tiejian Zhu, Rongrong Cui, Hua Ai, Nan Ji, Wei Huang, Yu Gong","doi":"10.1149/1945-7111/adeb2d","DOIUrl":"https://doi.org/10.1149/1945-7111/adeb2d","url":null,"abstract":"This study systematically investigates the electrochemical behavior of Lu(III) on inert molybdenum (Mo) and liquid gallium (Ga) electrodes in NaCl-CaCl 2 molten salt at 923 K. A combination of cyclic voltammetry (CV), square wave voltammetry (SWV), and reverse chronopotentiometry (RCP) was employed to elucidate the underlying electrochemical mechanisms. The diffusion coefficients of Lu(III) ions were determined from chronopotentiometry (CP) measurements. Lu-Ga intermetallic compounds were formed via the co-deposition of Lu(III) and Ga(III) on an inert electrode. Thermodynamic properties, including equilibrium potential and Gibbs free energy change of formation, were evaluated using open-circuit potential (OCP) measurements. Additionally, linear polarization (LP) analysis was performed to investigate the kinetics of the Lu(III)/Lu reduction on Mo and liquid Ga electrodes, yielding exchange current densities and charge transfer resistance at various temperatures. Furthermore, constant potential electrolysis (CPE) at different potentials (−1.4 V, −1.6 V, −1.7 V on liquid Ga and −1.9 V on Mo) for 15 h enabled the recovery of Lu(III) from the molten salt. Metallic Lu and Ga 3 Lu formed on Mo and liquid Ga electrodes respectively. The formed metallic Lu and Ga 3 Lu were characterized by XRD. Lu extraction rates reached 95.59% on Mo and 98.99% on liquid Ga, showing the latter’s higher efficiency.","PeriodicalId":17364,"journal":{"name":"Journal of The Electrochemical Society","volume":"172 7","pages":"072506-072506"},"PeriodicalIF":0.0,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147333500","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: 1

Chiral Interface Fabricated via L-Glutamic Acid-Assisted Electrodeposition and Sodium Alginate Self-Assembly for Trp Discrimination l -谷氨酸辅助电沉积和海藻酸钠自组装制备手性界面用于色氨酸鉴别

4区工程技术

Journal of The Electrochemical Society Pub Date : 2025-07-01 DOI: 10.1149/1945-7111/adfab6

Yang Sheng, Sijie Wang, Peng Zhang, Rong Zhang, Mark Bradley, Yixin Sun

{"title":"Chiral Interface Fabricated via L-Glutamic Acid-Assisted Electrodeposition and Sodium Alginate Self-Assembly for Trp Discrimination","authors":"Yang Sheng, Sijie Wang, Peng Zhang, Rong Zhang, Mark Bradley, Yixin Sun","doi":"10.1149/1945-7111/adfab6","DOIUrl":"https://doi.org/10.1149/1945-7111/adfab6","url":null,"abstract":"The development of enantioselective sensing platforms combining operational simplicity with high efficiency remains a persistent challenge in interdisciplinary fields spanning biochemical analysis, pharmaceutical development, and clinical diagnostics. In this study, we report a novel approach to construct a P-L-Glu/SA/GCE chiral sensor based on L-glutamic acid (L-Glu) electrodeposition and sodium alginate (SA) self-assembly on glassy carbon electrodes (GCE) for the electrochemical recognition of tryptophan (Trp) enantiomers. Comprehensive characterization through Fourier-transform infrared spectroscopy(FT-IR), scanning electron microscopy(SEM), and electrochemical impedance spectroscopy confirmed the successful fabrication of an interfacial architecture featuring distinctive lamellar nanostructures with micrometer-scale curvature, reminiscent of bivalve shell morphologies. The maximum peak current ratio of D-Trp to L-Trp (I D /I L ) reached 3.27 at the P-L-Glu/SA/GCE interface, determined by differential pulse voltammetry (DPV) method. There was a good linear relationship between the peak current and Trp enantiomer concentration across the 5–150 μM concentration range, with detection limits of 0.13 μM for D-Trp and 0.33 μM for L-Trp. Intriguingly, the P-L-Glu/SA/GCE chiral interface also realized chiral recognition of D-Trp and L-Trp via contact angle measurements. Finally, we demonstrated the accurate detection of the ratio of L/D-Trp in non-racemic mixtures using our P-L-Glu/SA/GCE interface, showing its potential for practical applications.","PeriodicalId":17364,"journal":{"name":"Journal of The Electrochemical Society","volume":"172 8","pages":"086504-086504"},"PeriodicalIF":0.0,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147899540","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: 1

Photoelectrochemical Sensor Employing the Two-Dimensional Donor–Acceptor PPDA–NiPc COF for Sensitive Analysis of Curcumin 二维给受体PPDA-NiPc COF光电化学传感器对姜黄素的敏感分析

4区工程技术

Journal of The Electrochemical Society Pub Date : 2025-07-01 DOI: 10.1149/1945-7111/adfb32

Yuelan Fang, Suxiang Feng, Xiaokun Li

{"title":"Photoelectrochemical Sensor Employing the Two-Dimensional Donor–Acceptor PPDA–NiPc COF for Sensitive Analysis of Curcumin","authors":"Yuelan Fang, Suxiang Feng, Xiaokun Li","doi":"10.1149/1945-7111/adfb32","DOIUrl":"https://doi.org/10.1149/1945-7111/adfb32","url":null,"abstract":"Curcumin is extensively utilized across various domains including the food, pharmaceuticals, and chemical industries. However, excessive curcumin intake may induce tissue necrosis, thereby posing a substantial threat to human health, making rapid and precise detection of curcumin levels paramount. Here, tetranitro nickel phthalocyanine (NiPc) was synthesized via a solid-phase method. Subsequently, it underwent an azo condensation reaction with p-phenylenediamine (PPDA) under the assistance with potassium hydroxide. This process was used to fabricate a nickel phthalocyanine-based covalent organic framework material (PPDA-NiPc COF). Herein, NiPc serves as the acceptor unit (A) with high electron-accepting capability, while PPDA functions as the donor unit (D) to provide electrons. The D-A architecture established through imine bond formation, which significantly enhances photogenerated charge carrier separation and transfer. The photoelectrochemical sensor constructed based on two-dimensional COF exhibits remarkable sensitivity for curcumin detection. It demonstrates a favorable linear response within the concentration range of 0.05 to 50 μ M, with a detection limit as low as 1.46 nM. Moreover, this detector possesses superior stability and reproducibility and enables accurate quantification curcumin in real samples. This study not only expands COF material applications in photoelectrochemical sensing but also provides a novel strategy for detecting curcumin.","PeriodicalId":17364,"journal":{"name":"Journal of The Electrochemical Society","volume":"172 8","pages":"087515-087515"},"PeriodicalIF":0.0,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147884884","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

Electrochemical Aptamer Sensor Based on rGO-Pd-PB for Efficient Detection of Golgi Protein 73 基于rGO-Pd-PB的电化学适体传感器高效检测高尔基蛋白73

4区工程技术

Journal of The Electrochemical Society Pub Date : 2025-07-01 DOI: 10.1149/1945-7111/adf805

Bingbing Wan, Wei Chen, Xiaohong Tan, Zhongqun Zhou, Xuyang Chen, Yang Ding, Dang Wu, Yong Huang, Guiyin Li

{"title":"Electrochemical Aptamer Sensor Based on rGO-Pd-PB for Efficient Detection of Golgi Protein 73","authors":"Bingbing Wan, Wei Chen, Xiaohong Tan, Zhongqun Zhou, Xuyang Chen, Yang Ding, Dang Wu, Yong Huang, Guiyin Li","doi":"10.1149/1945-7111/adf805","DOIUrl":"https://doi.org/10.1149/1945-7111/adf805","url":null,"abstract":"Golgi protein 73 (GP73) is a novel serum marker for hepatocellular carcinoma (HCC) screening and diagnosis. In this study, we developed a sandwich electrochemical sensor for GP73 detection utilizing reduced graphene oxide-palladium nanoparticles-Prussian blue (RGO-Pd-PB) nanomaterial as the core detection element. RGO-Pd-PB nanomaterial exhibited peroxidase-like activity and were conjugated with a GP73-specific aptamer to form the signal recognition probe (RGO-Pd-PB-Apt). A GP73 aptamer was immobilized onto gold nanoparticles modified screen-printed electrode (Au NPs/SPE) to create the capture probe. Upon GP73 binding, a sandwich complex (RGO-Pd-PB-Apt/GP73/Apt/Au NPs/SPE) was formed. This complex catalyzed H 2 O 2 -mediated silver deposition, where the resulting silver ion signal intensity quantitatively correlated with GP73 concentration. The sensor demonstrated excellent performance, achieving a detection limit of 0.033 ng ml −1 and a linear detection range of 1.0 to 100.0 ng ml −1 . Validation in human serum samples showed strong agreement with enzyme-linked immunosorbent assay results, with relative errors between 1.02% and 7.27% and relative standard deviations ranging from 1.29% to 5.94%. This electrochemical aptamer biosensor demonstrated high specificity, sensitivity, reproducibility, and stability, providing a promising new platform for the early HCC detection.","PeriodicalId":17364,"journal":{"name":"Journal of The Electrochemical Society","volume":"172 8","pages":"087508-087508"},"PeriodicalIF":0.0,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147894441","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

Oxygen Vacancy-Rich Nb₂O₅ as Cathode for Mg-Li Hybrid Ion Batteries 富氧空位Nb2O5作为镁锂混合离子电池正极材料

4区工程技术

Journal of The Electrochemical Society Pub Date : 2025-07-01 DOI: 10.1149/1945-7111/adf25e

Ruyu Deng, Junliu Ye, Jiaxin Wen, Jingdong Yang, Jianbo Li, Di Zhao, Tao Chen, Fusheng Pan

{"title":"Oxygen Vacancy-Rich Nb2O5 as Cathode for Mg-Li Hybrid Ion Batteries","authors":"Ruyu Deng, Junliu Ye, Jiaxin Wen, Jingdong Yang, Jianbo Li, Di Zhao, Tao Chen, Fusheng Pan","doi":"10.1149/1945-7111/adf25e","DOIUrl":"https://doi.org/10.1149/1945-7111/adf25e","url":null,"abstract":"Due to the safe magnesium anode and fast Li + intercalation cathode, Mg-Li hybrid ion batteries (MLIBs) are considered to be one of the most promising candidates for electrical energy devices. However, developing cathode materials with good electrochemical properties is still a challenge for MLIBs. In this work, oxygen vacancy-rich Nb 2 O 5 cathode material was synthesized by a simple annealing treatment at high temperature. The results indicate that abundant oxygen vacancies are generated and a mass of original Nb 2 O 5 nanoparticles are formed on the surface of raw Nb 2 O 5 after annealing treatment. Density functional theory (DFT) analysis indicates that the oxygen vacancies could improve the conductivity of Nb 2 O 5 . The oxygen vacancy-rich Nb 2 O 5 delivers a high reversible capacity of 204.6 mA h g −1 at a current of 50 mA g −1 , and a cycling stability with capacity retention of 58.1% at 50 mA g −1 after 200 cycles, obviously higher than the oxygen vacancy-free Nb 2 O 5 with capacity retention of 23.3%. The improved reversible capacity and cycling stability are mainly attributed to oxygen vacancies, increased conductivity, and newly formed Nb 2 O 5 nanoparticles.","PeriodicalId":17364,"journal":{"name":"Journal of The Electrochemical Society","volume":"172 7","pages":"070541-070541"},"PeriodicalIF":0.0,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147920211","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: 2