ChemElectroChem最新文献_第7页

Annihilation Electrochemiluminescence Triggered by Bipolar Electrochemistry 双极电化学引发的湮灭电化学发光

IF 3.5 4区化学

ChemElectroChem Pub Date : 2024-10-30 DOI: 10.1002/celc.202400522

Leslie R. Arias-Aranda, Gerardo Salinas, Haidong Li, Conor F. Hogan, Alexander Kuhn, Laurent Bouffier, Neso Sojic

引用次数: 0

Screening of Cation Exchange Membranes for an Anthraquinone-Ferrocyanide Flow Battery 筛选阳离子交换膜用于蒽醌-亚铁氰化物液流电池

IF 3.5 4区化学

ChemElectroChem Pub Date : 2024-10-30 DOI: 10.1002/celc.202400516

Lavrans F. Söffker, Thomas Turek, Ulrich Kunz, Luis F. Arenas

{"title":"Screening of Cation Exchange Membranes for an Anthraquinone-Ferrocyanide Flow Battery","authors":"Lavrans F. Söffker, Thomas Turek, Ulrich Kunz, Luis F. Arenas","doi":"10.1002/celc.202400516","DOIUrl":"https://doi.org/10.1002/celc.202400516","url":null,"abstract":"The disodium salt of 9,10-anthraquinone-2,7-disulphonic acid (2,7-AQDS) is an interesting platform for developing anthraquinone derivative negolytes for aqueous organic flow batteries. Recently, ammonium sulphate supporting electrolytes have been considered for improved stability and solubility. This work advances the 2,7-AQDS/ferrocyanide flow battery with an ammonium sulphate supporting electrolyte (pH 5) by studying the suitability of six commercially available cation exchange membranes: E-620, NR-212, FS-930, F-1075-PK, F-1850 and N-115. Cell cycling under galvanostatic regime plus potential hold was performed to determine coulombic efficiency, energy efficiency and accessible capacity for each membrane as well as capacity fade rate for three selected membranes under extended operation. Cell cycling under galvanostatic control only was carried out to observe transient membrane behavior alongside accessible capacity and apparent capacity fade rate. It was found that the capacity set by the limiting negolyte is consistent with 1.5 electrons per 2,7-AQDS molecule and that energy efficiency shows a simple direct relationship to membrane thickness, with one exception. Meanwhile, four membranes displayed similar apparent capacity fade rates at this laboratory scale irrespective of their thickness, with capacity loss explained in terms of crossover. The best overall performance was attained by the thinnest membranes, E-620 and NR-212.","PeriodicalId":142,"journal":{"name":"ChemElectroChem","volume":"11 22","pages":""},"PeriodicalIF":3.5,"publicationDate":"2024-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/celc.202400516","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142674382","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Lithium Doping Enhances the Aqueous Zinc Ion Storage Performance of V3O7 ⋅ H2O Nanorods 掺锂提高了 V3O7 ⋅ H2O 纳米棒的锌离子水溶液储存性能

IF 3.5 4区化学

ChemElectroChem Pub Date : 2024-10-30 DOI: 10.1002/celc.202400504

Yingfang Hu, Siwen Zhang, Yujin Ren, Rongyuan Ge, Yaowen Shi, Xinyu Feng, Hui Li, Baohua Jia, Bosi Yin, Tianyi Ma

{"title":"Lithium Doping Enhances the Aqueous Zinc Ion Storage Performance of V3O7 ⋅ H2O Nanorods","authors":"Yingfang Hu, Siwen Zhang, Yujin Ren, Rongyuan Ge, Yaowen Shi, Xinyu Feng, Hui Li, Baohua Jia, Bosi Yin, Tianyi Ma","doi":"10.1002/celc.202400504","DOIUrl":"https://doi.org/10.1002/celc.202400504","url":null,"abstract":"Aqueous zinc-ion batteries (AZIBs) offer significant advantages, including high safety, environmental protection and abundant zinc sources. V-based layer-like oxides are promising candidates as cathode materials for ZIBs; however, they face challenges such as low electrical conductivity, poor cycling stability, and limited Zn2+ storage capacity. In this study, Li-V3O7 ⋅ H2O electrode materials were successfully synthesized using a hydrothermal method. The doping of lithium ions has led to a significant expansion of the interlayer spacing within the electrode structure, which enhances ion mobility and improves ion transport speed as well as charge-discharge rates. Additionally, the increased spacing allows for the accommodation of more zinc ions, resulting in greater specific capacity and energy storage. More importantly, this modification reduces structural strain, minimizes the dissolution of vanadium-based materials, and maintains electrode integrity over multiple cycles, thereby improving cycling stability. Consequently, the properties of V3O7 ⋅ H2O electrodes were substantially enhanced through lithium-ion doping. The Li-V3O7 ⋅ H2O cathode has a specific capacity of 411.8 mAh g−1 at low current and maintains 83 % of its capacity at 4.0 A g−1 for 4800 cycles, indicating a noteworthy improvement over pristine V3O7 ⋅ H2O. Exhibiting outstanding conductivity, discharge capacity, and cycling stability, it holds immense promise for future high-performance energy storage.","PeriodicalId":142,"journal":{"name":"ChemElectroChem","volume":"11 22","pages":""},"PeriodicalIF":3.5,"publicationDate":"2024-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/celc.202400504","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142674380","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Key Ingredients for the Modeling of Single-Atom Electrocatalysts 单原子电催化剂建模的关键要素

IF 3.5 4区化学

ChemElectroChem Pub Date : 2024-10-29 DOI: 10.1002/celc.202400476

Giovanni Di Liberto, Gianfranco Pacchioni

{"title":"Key Ingredients for the Modeling of Single-Atom Electrocatalysts","authors":"Giovanni Di Liberto, Gianfranco Pacchioni","doi":"10.1002/celc.202400476","DOIUrl":"https://doi.org/10.1002/celc.202400476","url":null,"abstract":"Single-atom catalysis is gaining interest also because of its potential applications in a broad spectrum of electrochemical reactions. The reactivity of single-atom catalysts (SACs) is typically modeled with first principles approaches taking insight from heterogenous catalysis. An increasing number of studies show that the chemistry of SACs is more complex than often assumed, and shares many aspects in common with coordination chemistry. This evidence raises challenges for computational electrocatalysis of SACs. In this perspective we highlight a few fundamental ingredients that one need to consider to provide reliable predictions on the reactivity of SACs for electrochemical applications. We discuss the role of the local coordination of the metal active phase, the need to use self-interaction corrected functionals, in particular when systems have magnetic ground states. We highlight the formation of unconventional intermediates with respect to classical metal electrodes, the need to include the stability of SACs in electrochemical conditions and the role of solvation in the analysis of new potential catalytic systems. This brief account can be considered as a tutorial underlining the importance of treating the reactivity of SACs. In fact, neglecting some of these aspects could lead to unreliable predictions failing in the design of new electrocatalysts.","PeriodicalId":142,"journal":{"name":"ChemElectroChem","volume":"11 22","pages":""},"PeriodicalIF":3.5,"publicationDate":"2024-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/celc.202400476","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142674107","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Surface-Engineered Pt-Ni(111) Nanocatalysts for Boosting Their ORR Performance via Thermal Treatment 表面工程铂镍（111）纳米催化剂通过热处理提高 ORR 性能

IF 3.5 4区化学

ChemElectroChem Pub Date : 2024-10-29 DOI: 10.1002/celc.202400491

Can Li, Xiaobo Chen, Jinfong Pan, Guangwen Zhou, Jiye Fang

{"title":"Surface-Engineered Pt-Ni(111) Nanocatalysts for Boosting Their ORR Performance via Thermal Treatment","authors":"Can Li, Xiaobo Chen, Jinfong Pan, Guangwen Zhou, Jiye Fang","doi":"10.1002/celc.202400491","DOIUrl":"https://doi.org/10.1002/celc.202400491","url":null,"abstract":"The electrochemical oxygen reduction reaction (ORR) is critical for fuel cell application, and modifying surface structures of electrocatalysts has proven effective in improving their catalytic performances. In this study, we investigated surface-engineered Pt−Ni nano-octahedra subjected to annealing in various atmospheres. All octahedral nanocrystals retained their Pt−Ni {111} facets at an elevated temperature following the annealing treatments. Air annealing led to the formation of nickel-rich shells on the Pt−Ni surface. In contrast, hydrogen (H₂) as a reducing gas facilitated the reduction of surface Ni species, incorporating them into the Pt−Ni bulk alloy, which resulted in superior mass activity and specific activity for ORR-approximately 2.4 and 2.3 times as high as those from the unmodified counterpart, respectively. After 20,000 potential cycles, the H₂/Ar-annealed Pt−Ni nano-octahedra maintained a mass activity of 3.92 A/<math></math>\u0000, surpassing the initial mass activity of the unannealed counterparts (2.95 A/<math></math>\u0000). These findings demonstrate a viable approach for tailoring catalyst surfaces to enhance performance in various energy storage and conversion applications.","PeriodicalId":142,"journal":{"name":"ChemElectroChem","volume":"11 22","pages":""},"PeriodicalIF":3.5,"publicationDate":"2024-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/celc.202400491","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142674108","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A Computational Review on Localized High-Concentration Electrolytes in Lithium Batteries 锂电池局部化高浓度电解质的计算研究进展

IF 3.5 4区化学

ChemElectroChem Pub Date : 2024-10-28 DOI: 10.1002/celc.202400444

Xi Chen, Hao Yu

{"title":"A Computational Review on Localized High-Concentration Electrolytes in Lithium Batteries","authors":"Xi Chen, Hao Yu","doi":"10.1002/celc.202400444","DOIUrl":"https://doi.org/10.1002/celc.202400444","url":null,"abstract":"Electrolyte engineering plays a vital role in improving the battery performance of lithium batteries. The idea of localized high-concentration electrolytes that are derived by adding “diluent” in high-concentration electrolytes has been proposed to retain the merits and alleviate the disadvantages of high-concentration electrolytes, and it has become the focus of attention in high-voltage lithium batteries, flame-retardant lithium batteries, and low-temperature lithium batteries. Extensive efforts have been made to elucidate the fundamentals of localized high-concentration electrolytes. This review provides an overview of state-of-the-art computational progress in the studies of localized high-concentration electrolytes, focusing on the application of computational techniques to analyze the redox stability, solvation structures, and interface characteristics of lithium batteries with localized high-concentration electrolytes. Integrated with experimental approaches, complementing each other, computational methods are believed to be conducive to understanding the working mechanism and designing localized high-concentration electrolytes for better lithium batteries in the future.","PeriodicalId":142,"journal":{"name":"ChemElectroChem","volume":"11 23","pages":""},"PeriodicalIF":3.5,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/celc.202400444","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142762848","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Electrochemical and Photoelectrochemical Bimodal Sensor Based on Copper Modified g-C3N4 for Nitrate Detection 基于铜修饰g-C3N4的电化学与光电双峰传感器用于硝酸盐检测

IF 3.5 4区化学

ChemElectroChem Pub Date : 2024-10-24 DOI: 10.1002/celc.202300557

Wafa Aidli, Daniele Fumagalli, Hanieh Helli, Luigi Falciola, Valentina Pifferi

{"title":"Electrochemical and Photoelectrochemical Bimodal Sensor Based on Copper Modified g-C3N4 for Nitrate Detection","authors":"Wafa Aidli, Daniele Fumagalli, Hanieh Helli, Luigi Falciola, Valentina Pifferi","doi":"10.1002/celc.202300557","DOIUrl":"https://doi.org/10.1002/celc.202300557","url":null,"abstract":"Nitrates (NO3-) are crucial in agricultural practices and the food industry, but their excessive presence in water can lead to adverse health effects. Their leaching into water sources necessitates regular monitoring. This study introduces a novel bimodal electrochemical (EC)/photoelectrochemical (PEC) sensor, utilizing copper-modified graphitic carbon nitride (Cu/g-C3N4), designed for precise nitrate determination. The structural morphology and chemical composition of the Cu/g-C3N4 nanocomposite were meticulously examined using Transmission Electron Microscopy (TEM) and Fourier-transform infrared spectroscopy (FTIR). The optimization of copper loading in g-C3N4 was conducted, and the electrochemical behavior and light irradiation interaction of various Cu/g-C3N4 nanocomposites were systematically studied. The investigation revealed that 20 % Cu/g-C3N4 represented the optimal doping ratio, establishing the most promising candidate for NO3-. Nitrates were consistently measured using both EC and PEC techniques, yielding Limits of Detection (LoD) of 3.75 and 9.60 ppm, respectively. The sensor‘s robust performance was further demonstrated in the presence of possible interferents. The proposed sensors were also successfully used to detect NO3- in commercial water. This bimodal sensor presents a promising approach for accurate nitrate determination, attesting to its potential for effective cross-validation.","PeriodicalId":142,"journal":{"name":"ChemElectroChem","volume":"11 23","pages":""},"PeriodicalIF":3.5,"publicationDate":"2024-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/celc.202300557","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142762627","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Application of Bioelectrochemical System in Nitrogen Removal via Simultaneous Autotrophic Nitrification and Denitrification from Wastewater 生物电化学系统在废水自养硝化反硝化脱氮中的应用

IF 3.5 4区化学

ChemElectroChem Pub Date : 2024-10-24 DOI: 10.1002/celc.202400432

Parisa Ebrahimzadeh, Nahid Navidjouy, Hassan Khorsandi, Mostafa Rahimnejad

{"title":"Application of Bioelectrochemical System in Nitrogen Removal via Simultaneous Autotrophic Nitrification and Denitrification from Wastewater","authors":"Parisa Ebrahimzadeh, Nahid Navidjouy, Hassan Khorsandi, Mostafa Rahimnejad","doi":"10.1002/celc.202400432","DOIUrl":"https://doi.org/10.1002/celc.202400432","url":null,"abstract":"Bioelectrochemical systems (BES) is a new and expanding technology that can simultaneously convert chemical energy into electrical energy by removing nutrients. The present study investigated the BES in removing nitrogen compounds and produce electricity. To this end, a BES reactor with two chambers of cathode and anode and nafion 117 membrane was used as a separator between the two chambers. Then, the BES performance at different concentrations of COD and primary ammonium at different retention times was investigated to remove nitrogen compounds and organic matter. Voltage, current and power density were measured. The results showed that the maximum COD removal efficiency was 73.2 % for the substrate concentration of 2000 mg/L, which decreased to 72.6 % when the substrate concentration increased to 10000 mg/L. The maximum removal efficiency of nitrogen compounds was 83.4 % at COD 10000 mg/L and the initial ammonium concentration was 50 mg/L. The maximum voltage, current and power density in this phase were 391 mV, 460 mA/m2, 63/48 mW/m2, respectively. The results of the study showed that BES can be used as a suitable method to remove high amounts of ammonium in wastewater and organic materials and simultaneously produce electricity.","PeriodicalId":142,"journal":{"name":"ChemElectroChem","volume":"11 23","pages":""},"PeriodicalIF":3.5,"publicationDate":"2024-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/celc.202400432","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142762660","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Transition Metal (Co, Ni, Fe) Selenides by Selenization of Gallic Acid based MOFs used as Na-Ion Battery Anodes 没食子酸基mof硒化钠离子电池阳极过渡金属（Co, Ni, Fe）硒化物

IF 3.5 4区化学

ChemElectroChem Pub Date : 2024-10-23 DOI: 10.1002/celc.202400385

Meral Aydin, Thomas Devic, Ali Şems Ahsen, Nicolas Gautier, Rezan Demir-Cakan

{"title":"Transition Metal (Co, Ni, Fe) Selenides by Selenization of Gallic Acid based MOFs used as Na-Ion Battery Anodes","authors":"Meral Aydin, Thomas Devic, Ali Şems Ahsen, Nicolas Gautier, Rezan Demir-Cakan","doi":"10.1002/celc.202400385","DOIUrl":"https://doi.org/10.1002/celc.202400385","url":null,"abstract":"Sodium-ion batteries (NIBs) are gaining momentum, thanks to the increasing demand for energy storage devices and the abundant reserves and low sodium cost. Transition metals are well-established materials due to their high conductivity and electrochemical activity. In this work, metal selenides (MSex) (M: Ni, Co, Fe) are obtained by facile selenization in a single step of transition gallic acid based metal organic frameworks (MOFs) under Ar flow at 600 °C. As the powders undergo selenization, the resulting MSex particles are encapsulated within the amorphous carbon network formed by the decomposition of the gallate ligand. The microstructures are examined by HR-TEM analyses and the characteristic interplanar spacing of each transition metal selenide is measured and found to coincide with the XRD pattern. Meanwhile, the specific surface areas were measured as 121, 152, and 155 m2/g for CoSe2, NiSe and FeSe, respectively. The resulting NiSe/C, CoSe2/C and FeSe/C nanomaterials are tested as NIB negative electrodes and are shown to have a capacity of 315, 312, and 363 mAh/g, respectively, after 100 cycles at a current density of 100 mA/g while Na-ion diffusion coefficients (DNa+) are calculated in the range of 10−10–10−7 cm2/s by galvanostatic intermittent titration (GITT) technique.","PeriodicalId":142,"journal":{"name":"ChemElectroChem","volume":"11 23","pages":""},"PeriodicalIF":3.5,"publicationDate":"2024-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/celc.202400385","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142762764","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Theoretical and Experimental Insights into Dendrite Growth in Lithium-Metal Electrode 锂金属电极枝晶生长的理论与实验研究

IF 3.5 4区化学

ChemElectroChem Pub Date : 2024-10-23 DOI: 10.1002/celc.202400441

Behnam Ghalami Choobar, Hamid Hamed, Saeed Yari, Mohammadhosein Safari

{"title":"Theoretical and Experimental Insights into Dendrite Growth in Lithium-Metal Electrode","authors":"Behnam Ghalami Choobar, Hamid Hamed, Saeed Yari, Mohammadhosein Safari","doi":"10.1002/celc.202400441","DOIUrl":"https://doi.org/10.1002/celc.202400441","url":null,"abstract":"A stable lithium-metal electrode can enable the shift from the Li-ion batteries to the next generation chemistries such as Li−S and Li−O2 with significant gains in the energy density and sustainability. This transition, however, is hindered by the dendrite formation, high chemical reactivity, and volume changes of the Li electrode. Although recent advancements in computational and experimental research have deepened our understanding of these issues, the primary obstacles to the commercialization of the lithium-metal batteries (LMBs) still persist. To address these challenges, a synergistic approach that combines computational and experimental strategies shows great promise. In this regard, this paper reviews the current experimental and theoretical understanding of the lithium-metal electrodes in view of the initiation and growth mechanisms of the lithium dendrites and interface instability. Leveraging the strengths of both approaches can offer a holistic insight into the LMB performance and guide the development of innovative designs for electrolytes and electrodes that can enhance the stability and performance of the LMBs.","PeriodicalId":142,"journal":{"name":"ChemElectroChem","volume":"11 23","pages":""},"PeriodicalIF":3.5,"publicationDate":"2024-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/celc.202400441","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142762763","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0