Journal of The Electrochemical Society最新文献_第5页

Effect of the Ammonium Copper Fluoride Precursor on Formation of High-Performance Copper Fluoride Cathode Material for Thermal Battery 氟化铜铵前驱体对热电池高性能氟化铜正极材料形成的影响

4区工程技术

Journal of The Electrochemical Society Pub Date : 2025-05-01 DOI: 10.1149/1945-7111/addae9

Bo Tao, Bo Xu, Meng He, Jinxia Wang, Kai Yu, Yanhua Cui, Xintao Bai, Qiushi Song, Zhiqiang Ning, Hongwei Xie

{"title":"Effect of the Ammonium Copper Fluoride Precursor on Formation of High-Performance Copper Fluoride Cathode Material for Thermal Battery","authors":"Bo Tao, Bo Xu, Meng He, Jinxia Wang, Kai Yu, Yanhua Cui, Xintao Bai, Qiushi Song, Zhiqiang Ning, Hongwei Xie","doi":"10.1149/1945-7111/addae9","DOIUrl":"https://doi.org/10.1149/1945-7111/addae9","url":null,"abstract":"A high-performance copper fluoride cathode material with high operating voltage and discharge specific capacity is very attractive for lithium thermal batteries (LTBs). This study investigated the effect of ammonium copper fluoride precursors on the formation of nanoscale copper fluoride (CuF 2 ) cathode materials. Density functional theory calculations were used to analyze structural changes and energy variations during discharge. Results show that smaller precursor particles facilitate the formation of nanoscale CuF 2 with a tendency for aggregation. The CuF 2 -35 material, synthesized at 35 °C, exhibits a nanoscale structure with nanopores of 2–10 nm and 25–45 nm (1:6 ratio). When combined with carbon nanotubes (CNTs), CuF 2 -35/CNTs demonstrate a discharge specific capacity of 508.6 mAh g −1 (96% of theoretical capacity) and a discharge specific energy of 1363.48 Wh kg −1 at 300 mA g −1 with a 2.0 V cutoff. The discharge process involves an interfacial step followed by two sequential electrochemical reactions: the conversion of Cu 2+ to Cu + and subsequently Cu + to Cu. These findings highlight CuF 2 as an excellent cathode material for LTBs, offering high capacity, energy density, and a well-defined discharge mechanism. The results indicate that copper fluoride is an excellent cathode material for LTBs.","PeriodicalId":17364,"journal":{"name":"Journal of The Electrochemical Society","volume":"172 5","pages":"050539-050539"},"PeriodicalIF":0.0,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147912482","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 and Spectroscopic Studies of Zinc Oxide in an Eco-Friendly Deep Eutectic Solvent for Zn Electrodeposition. 一种环保型深共晶溶剂中氧化锌电沉积的电化学和光谱研究。

IF 3.3 4区工程技术

Journal of The Electrochemical Society Pub Date : 2025-05-01 Epub Date: 2025-05-28 DOI: 10.1149/1945-7111/adda79

Kazem Mohammadzadeh, Uttam Kumer Roy, Abhishek Lahiri

{"title":"Electrochemical and Spectroscopic Studies of Zinc Oxide in an Eco-Friendly Deep Eutectic Solvent for Zn Electrodeposition.","authors":"Kazem Mohammadzadeh, Uttam Kumer Roy, Abhishek Lahiri","doi":"10.1149/1945-7111/adda79","DOIUrl":"10.1149/1945-7111/adda79","url":null,"abstract":"Zinc oxide (ZnO) is a waste produced from end-of-life Zinc-air batteries. Recycling of these spent batteries is important to reduce the pressure on primary zinc sources and to mitigate environmental pollution. To address the recyclability of waste ZnO from different sources, here we have studied ZnO dissolution and Zn electrodeposition in deep eutectic solvents (DES) of betaine hydrochloride (Betaine-HCl) and formic acid (FA) using spectroscopic and electrochemical techniques. Additionally, the effect of water in the DES on the dissolution of ZnO and its electrochemical and spectroscopic behaviour was also studied. Solubility of ZnO in DES was found to be 95 g l-1 which decreased slightly to 85 g l-1 in the DES containing 10% water. Fourier transform infrared and Raman studies revealed that ZnO dissolved in DES by forming a [ZnCl3FA]- complex. Electrochemical studies showed that Zn deposit morphology and structure varied with water content in the DES. A uniform Zn deposit was achieved in ZnO-DES mixture whereas the presence of water gave a porous morphology. Thus, this study revealed an easy and eco-friendly route to recycle ZnO.","PeriodicalId":17364,"journal":{"name":"Journal of The Electrochemical Society","volume":"172 5","pages":"052505-52505"},"PeriodicalIF":3.3,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7618030/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144958695","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

Oxygen-Vacancy-Reinforced Titanium Dioxide@Graphene/Carbon Nanotubes n-p Heterojunction for High Rate Photo-Assisted Li-O₂ Battery 氧空位增强钛Dioxide@Graphene/碳纳米管n-p异质结用于高倍率光辅助锂氧电池

4区工程技术

Journal of The Electrochemical Society Pub Date : 2025-04-24 DOI: 10.1149/1945-7111/add096

Zhichao Xue, Xiaolong Liang, Jie Li, Mingfu Yu, Yingyi Ru, Qiang Li, Hong Sun

{"title":"Oxygen-Vacancy-Reinforced Titanium Dioxide@Graphene/Carbon Nanotubes n-p Heterojunction for High Rate Photo-Assisted Li-O2 Battery","authors":"Zhichao Xue, Xiaolong Liang, Jie Li, Mingfu Yu, Yingyi Ru, Qiang Li, Hong Sun","doi":"10.1149/1945-7111/add096","DOIUrl":"https://doi.org/10.1149/1945-7111/add096","url":null,"abstract":"Photo-assisted Li-O 2 batteries have gained popularity due to their utilization of solar power to improve performance. However, challenges persist in synergizing the photocathode’s hierarchically porous structure with the catalytic activity of the active material. Herein, we used the direct ink writing technique to fabricate a freestanding 3D printed hierarchically porous structure cathode. Meanwhile, a p-n heterojunction is created in oxygen vacancy-rich rutile titanium dioxide/reduced graphene oxide/carbon nanotubes (Ov-TiO 2 @rGO/CNTs) through a freeze-drying and annealing strategy. The titanium dioxide contains abundant oxygen vacancies, which strengthen the electrostatic attraction with the graphene oxide and create unsaturated coordination sites. Upon annealing, the graphene oxide removes the oxygenated functional group and bonds covalently with O V -TiO 2 . The interaction between Ov-TiO 2 and rGO through Ti-C bonds creates a channel that facilitates charge transfer, thereby enhancing the rate capability and cyclability of the battery. Even at a high current density of 0.5 mA cm −2 under illumination, the 3D printed Ov-TiO 2 @rGO/CNTs photocathode delivers a discharge capacity of 17.43 mAh cm −2 and stable cycling for 400 h. The excellent performance is attributed to the efficient photocatalytic catalytic sites, fast electronic/ionic pathways, and Li 2 O 2 storage space of the freestanding photocathode. This design strategy shows promise for future energy applications.","PeriodicalId":17364,"journal":{"name":"Journal of The Electrochemical Society","volume":"172 5","pages":"050505-050505"},"PeriodicalIF":0.0,"publicationDate":"2025-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147907965","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

Comparative Study on Electron Transfer of Methylene Blue Modified Stem-Loop and Linear DNA Self-Assembled Monolayers on Gold Electrodes 亚甲基蓝修饰茎环与线性DNA自组装单层膜在金电极上电子转移的比较研究

4区工程技术

Journal of The Electrochemical Society Pub Date : 2025-04-01 DOI: 10.1149/1945-7111/adcda1

Lingling Zhang, Shuangru Yang, Yuge Liu, Yongmei Jia, Zhiguo Li

{"title":"Comparative Study on Electron Transfer of Methylene Blue Modified Stem-Loop and Linear DNA Self-Assembled Monolayers on Gold Electrodes","authors":"Lingling Zhang, Shuangru Yang, Yuge Liu, Yongmei Jia, Zhiguo Li","doi":"10.1149/1945-7111/adcda1","DOIUrl":"https://doi.org/10.1149/1945-7111/adcda1","url":null,"abstract":"Understanding the electron transfer performance of DNA self-assembled monolayers (SAMs) on a transducer substrate was important for constructing DNA electrochemical sensors with high sensitivity. Here we immersed the gold electrodes in mixed solutions comprising thiol-modified stem-loop DNA (SL-DNA) or linear DNA (L-DNA) terminally bound with methylene blue (MB), and aliphatic thiols (HOC 6 SH, C 6 SH, HOOCC 5 SH, H 2 NC 6 SH, HOC 11 SH, C 12 SH, or HOOCC 10 SH) to obtain DNA/thiols mixed self-assembled monolayers (SAMs). MB electron transfer performances through SL-DNA/thiols and L-DNA/thiols mixed SAMs were investigated by cyclic voltammetry (CV). Our results showed that the mixed assembly of thiols with DNA was conducive to MB electron transfer. The electron transfer rate ( k s ) values of MB through L-DNA SAMs were bigger than those through SL-DNA SAMs, indicating that the flexibility of DNA chains was important to MB electron transfer. Thiols chain length or terminal groups influenced k s of MB significantly, that increasing NaCl or MgCl 2 concentrations in solution around DNA availed MB electron transfer, and Mg 2+ advanced MB electron transfer more than Na + , and that the stability of L-DNA/thiols SAMs was much better than SL-DNA/thiols SAMs. These conclusions might provide a reference for studying DNA electron transfer mechanisms or designing DNA or RNA electrochemical sensors with optimal performance.","PeriodicalId":17364,"journal":{"name":"Journal of The Electrochemical Society","volume":"172 4","pages":"045502-045502"},"PeriodicalIF":0.0,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147913142","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

Chitosan-Capped Silver Nanoparticles for the Electrochemical Detection of Congo Red in River Water Samples 壳聚糖包覆纳米银的电化学检测河样中刚果红

4区工程技术

Journal of The Electrochemical Society Pub Date : 2025-04-01 DOI: 10.1149/1945-7111/adc8db

Moustafa Zahran, Suzan Mohammed, M. A. Zahran, Magdi Abdel Azzem

{"title":"Chitosan-Capped Silver Nanoparticles for the Electrochemical Detection of Congo Red in River Water Samples","authors":"Moustafa Zahran, Suzan Mohammed, M. A. Zahran, Magdi Abdel Azzem","doi":"10.1149/1945-7111/adc8db","DOIUrl":"https://doi.org/10.1149/1945-7111/adc8db","url":null,"abstract":"Congo red (CR), a synthetic azo dye, is known for its high toxicity and potential to bioaccumulate in the food chain. Exposure to CR-contaminated water can lead to various health issues, including cancer, underscoring the need for effective quantification and treatment methods. While reliable, traditional chromatographic and spectroscopic techniques are often complex, require toxic solvents, and may not be suitable for rapid or on-site analysis. Herein, we report a replacement tool for quantifying CR in water samples using an electrochemical sensor modified with biosynthesized chitosan-capped silver nanoparticles (AgNPs). AgNP identification was accomplished using ultraviolet-visible spectroscopy and square wave voltammetry (SWV), which showed AgNP characteristic peaks at 438 nm and 0.06 V, respectively. A transmission electron microscope confirmed the spherical shape of AgNPs and their average size (30 nm). The electrocatalytic activity of AgNPs towards CR was also approved using cyclic voltammetry, SWV, and impedance spectroscopy. Thus, the SWVs of different concentrations of CR were used to obtain the calibration curve, showing limits of detection and quantification of 0.017 and 0.056 μM, respectively. Additionally, the interferences and real sample studies showed that the chitosan-capped AgNPs sensor is suitable for quantifying CR in river water samples with high selectivity.","PeriodicalId":17364,"journal":{"name":"Journal of The Electrochemical Society","volume":"172 4","pages":"047505-047505"},"PeriodicalIF":0.0,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147922783","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: 4

Simultaneous Determination of Mangiferin and Neomangiferin by Electrochemical Detection based on CuBTC and GO-COOH Modified Glassy Carbon Electrode CuBTC和GO-COOH修饰玻碳电极电化学检测同时测定芒果苷和新芒果苷

4区工程技术

Journal of The Electrochemical Society Pub Date : 2025-04-01 DOI: 10.1149/1945-7111/adcc5c

Yiheng Zhang, Zhengjie Zhang, Huanhuan Zhu, Yurong Wang

{"title":"Simultaneous Determination of Mangiferin and Neomangiferin by Electrochemical Detection based on CuBTC and GO-COOH Modified Glassy Carbon Electrode","authors":"Yiheng Zhang, Zhengjie Zhang, Huanhuan Zhu, Yurong Wang","doi":"10.1149/1945-7111/adcc5c","DOIUrl":"https://doi.org/10.1149/1945-7111/adcc5c","url":null,"abstract":"An electrochemical sensor for the simultaneous detection of mangiferin (MAN) and neomangiferin (NEO) was developed using CuBTC and GO-COOH through an electroreduction method for the first time. The electrochemical properties of the CuBTC@ErGO-COOH/GCE and the electrochemical behavior of MAN and NEO on this sensor were investigated. Several factors were investigated, including the concentration of CuBTC, pH value, accumulation time and scanning rate using cyclic voltammetry. The electrochemical reaction processes of MAN and NEO on the CuBTC@ErGO-COOH/GCE were inferred. An electroanalytical method was developed for the simultaneous detection of MAN and NEO using linear sweep voltammetry, allowing for precise and sensitive quantification of both compounds. The electrode reaction processes of MAN and NEO on the CuBTC@ErGO-COOH/GCE were both determined to be diffusion-controlled. The linear ranges for MAN and NEO were established from 0.1 ∼ 8 μM, with the detection limits of 8.1 nM and 17 nM (S/N = 3), respectively. The sensor demonstrated good repeatability, reproducibility, stability and anti-interference ability. Furthermore, it was successfully applied to the simultaneous detection of MAN and NEO in urine and serum samples with satisfactory recovery.","PeriodicalId":17364,"journal":{"name":"Journal of The Electrochemical Society","volume":"172 4","pages":"047513-047513"},"PeriodicalIF":0.0,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147878682","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

Electrochemical Sensing of Acetaminophen Based on CuO/CNTs/g-C₃N₄ Composite CuO/CNTs/g-C3N4复合材料对乙酰氨基酚的电化学传感

4区工程技术

Journal of The Electrochemical Society Pub Date : 2025-04-01 DOI: 10.1149/1945-7111/adce3b

Shengbao Zhou, Yuehuan Yuan, Chun Zhao, Feifei Zhang, Zonghua Wang

{"title":"Electrochemical Sensing of Acetaminophen Based on CuO/CNTs/g-C3N4 Composite","authors":"Shengbao Zhou, Yuehuan Yuan, Chun Zhao, Feifei Zhang, Zonghua Wang","doi":"10.1149/1945-7111/adce3b","DOIUrl":"https://doi.org/10.1149/1945-7111/adce3b","url":null,"abstract":"This study investigates the application of a copper oxide/carbon nanotubes/carbon nitride(CuO/CNTs/g-C 3 N 4 ) composite as electrode material for acetaminophen detection. The synthesized nanomaterials were characterized using scanning electron microscopy, transmission electron microscopy, energy-dispersive spectroscopy, and powder X-ray diffraction. The electrochemical behavior of acetaminophen was assessed via cyclic voltammetry and square wave volammetry methods. The synergistic effects of CuO, g-C 3 N 4 and CNTs enhance electron transfer, facilitating the conversion of irreversible oxidation processes into reversible redox events. The CuO/CNTs/g-C 3 N 4 sensing electrode exhibited a significantly stronger redox peak signal, reflecting improved catalytic performance for acetaminophen detection. The sensor demonstrated a linear detection range of 0.02–0.1 and 1–120 μmol l −1 , with a detection limit of 5.89 nmol l −1 . The results affirm that the CuO/CNTs/g-C 3 N 4 sensing electrode provides robust reproducibility and stability for the determination of acetaminophen.","PeriodicalId":17364,"journal":{"name":"Journal of The Electrochemical Society","volume":"172 4","pages":"047521-047521"},"PeriodicalIF":0.0,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://iopscience.iop.org/article/10.1149/1945-7111/adce3b/pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147891092","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: 2

The Simultaneous Electrochemical Sensing of Magnolol and Honokiol in Traditional Chinese Medicine based on Copper Chelated Porous Coordination Network 基于铜螯合多孔配位网络的中药厚朴酚和厚朴酚的同时电化学传感

4区工程技术

Journal of The Electrochemical Society Pub Date : 2025-04-01 DOI: 10.1149/1945-7111/adcbdd

Jiajia Lu, Zhiyuan Zheng, Lina Liu, Ningxuan Liu, Yuanyuan You, Xiang Zhou, Ling Lu, Jia Tao, Shaobin Li, Zibin Song, Peng Zhao

{"title":"The Simultaneous Electrochemical Sensing of Magnolol and Honokiol in Traditional Chinese Medicine based on Copper Chelated Porous Coordination Network","authors":"Jiajia Lu, Zhiyuan Zheng, Lina Liu, Ningxuan Liu, Yuanyuan You, Xiang Zhou, Ling Lu, Jia Tao, Shaobin Li, Zibin Song, Peng Zhao","doi":"10.1149/1945-7111/adcbdd","DOIUrl":"https://doi.org/10.1149/1945-7111/adcbdd","url":null,"abstract":"Magnolol and honokiol are significant phenolic isomers derived from Magnolia officinalis and are considered promising candidates for potent anticancer drugs. A convenient and rapid method for the simultaneous analysis of magnolol and honokiol is essential for investigating their mechanisms of action and pharmacokinetics. In this study, we developed a composite electrode based on a copper-chelated porous coordination network (PCN-224(Cu)) and carbon nanotubes (CNT). Experimental results demonstrated that the PC-CNT/GCE exhibited a substantial redox potential difference (∼0.14 V) between magnolol and honokiol under differential pulse voltammetry. The modified electrode enabled the simultaneous detection of both compounds in a mixture, showing a linear increase in response current with detection limits (LOD = 3 σ /s) of 2.65 μM for magnolol and 11.4 μM for honokiol. Additionally, the sensor exhibited sensitivities of 54.894 μA mM −1 for honokiol and 46.677 μA mM −1 for magnolol. These findings suggest that PCN-224(Cu)-based electrodes hold great potential for the efficient analysis of phenolic isomers in Magnolia officinalis. Furthermore, this study provides a foundation for new applications of porous coordination networks in electrochemical sensing.","PeriodicalId":17364,"journal":{"name":"Journal of The Electrochemical Society","volume":"172 4","pages":"047515-047515"},"PeriodicalIF":0.0,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147902226","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

Electrocatalytic Degradation of Cationic Red GTL on PbO₂ Electrode Modified with Graphene Oxide 氧化石墨烯修饰PbO2电极电催化降解阳离子红GTL

4区工程技术

Journal of The Electrochemical Society Pub Date : 2025-03-31 DOI: 10.1149/1945-7111/adc76a

Xuefei Zhang, Bing Wu, Siwei Zhuang, Jianglin Cao

{"title":"Electrocatalytic Degradation of Cationic Red GTL on PbO2 Electrode Modified with Graphene Oxide","authors":"Xuefei Zhang, Bing Wu, Siwei Zhuang, Jianglin Cao","doi":"10.1149/1945-7111/adc76a","DOIUrl":"https://doi.org/10.1149/1945-7111/adc76a","url":null,"abstract":"Electrocatalytic oxidation using PbO 2 electrodes is a prospective strategy for treatment of bio-refractory dye wastewater. However, it is hindered by high energy consumption, poor degradation efficiency, and low anode stability. Here, PbO 2 electrodes were reconstructed by intercalating and surface-intervening with graphene oxide (GO) to enhance the stability of the composite electrodes and achieve high-efficiency oxidation of cationic red GTL. Compared with that on PbO 2 , reactive oxygen species (e.g., ·OH and ·O) on GO-PbO 2 were less consumed by the oxygen evolution reaction due to their larger spacing on GO-PbO 2 . In addition, GO-PbO 2 showed lower cell voltage than PbO 2 , indicating a higher electron transfer rate and lower energy consumption. The coupled free radical behavior and electron transfer enhanced the decolorization (1.7 times that of PbO 2 ) and mineralization (1.4 times that of PbO 2 ) rate of cationic red GTL on GO-PbO 2 . Furthermore, doping of GO with multilayer structure improved the stability of PbO 2 anode and its performance improvement mechanism was revealed. The prepared GO-PbO 2 electrode prolonged service-life (162 h) under accelerated electrolysis, about 2.7 times that of the PbO 2 electrode (60 h). This work provides a novel GO-PbO 2 electrode for efficient electrocatalytic degradation of GTL, and can be easily extended to electro-degradation of non-biodegradable wastewater.","PeriodicalId":17364,"journal":{"name":"Journal of The Electrochemical Society","volume":"172 4","pages":"043505-043505"},"PeriodicalIF":0.0,"publicationDate":"2025-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147904681","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

Regulating Oxygen Redox Process to Mitigate Voltage Decay and Hysteresis of Li-Rich Mn-Based Layered Cathodes 调节氧氧化还原过程减轻富锂锰基层状阴极的电压衰减和滞后

4区工程技术

Journal of The Electrochemical Society Pub Date : 2025-03-28 DOI: 10.1149/1945-7111/adc6c6

Xiaola Li, Huihong Gong, Wenjie Huang, Wenzhao Huang, Ziyang Liang, Yuqing Liu, Boyang Zhang, Shuxing Wu, Chenyu Liu, Zhan Lin, Dong Luo

{"title":"Regulating Oxygen Redox Process to Mitigate Voltage Decay and Hysteresis of Li-Rich Mn-Based Layered Cathodes","authors":"Xiaola Li, Huihong Gong, Wenjie Huang, Wenzhao Huang, Ziyang Liang, Yuqing Liu, Boyang Zhang, Shuxing Wu, Chenyu Liu, Zhan Lin, Dong Luo","doi":"10.1149/1945-7111/adc6c6","DOIUrl":"https://doi.org/10.1149/1945-7111/adc6c6","url":null,"abstract":"Li-rich Mn-based layered oxides (LLOs) are regarded as one of the most promising next-generation cathodes for lithium-ion batteries (LIBs) due to their ultra-high capacity and low cost. However, the redox behavior of oxygen under high voltage induces severe challenges, including voltage hysteresis and voltage decay, which have become major obstacles to their commercialization. This work optimizes the oxygen redox process of O2-type LLOs by regulating the Na content in P2-type Na-based intermediates. Experimental results demonstrate that samples prepared by intermediates with optimal Na content show higher reversibility and reduction potential of oxygen redox. Meanwhile, the migration and dissolution of transition metals in the optimized samples are effectively suppressed. Therefore, the optimized samples deliver an improved voltage stability and alleviated voltage hysteresis. This work suggests that the oxygen redox process can be regulated and provides a practical solution to mitigate voltage decay and hysteresis in LLOs.","PeriodicalId":17364,"journal":{"name":"Journal of The Electrochemical Society","volume":"172 4","pages":"040508-040508"},"PeriodicalIF":0.0,"publicationDate":"2025-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147891333","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