ChemElectroChem最新文献_第6页

Bi-integrated CNT current Collectors for Dendrite-Free and Long-Lasting Anode-Free Potassium Metal Batteries 用于无枝晶和持久无阳极钾金属电池的双集成碳纳米管集流器

IF 3.5 4区化学

ChemElectroChem Pub Date : 2025-07-23 DOI: 10.1002/celc.202400709

Chenxi Lu, Ruiyuan Tian

{"title":"Bi-integrated CNT current Collectors for Dendrite-Free and Long-Lasting Anode-Free Potassium Metal Batteries","authors":"Chenxi Lu, Ruiyuan Tian","doi":"10.1002/celc.202400709","DOIUrl":"https://doi.org/10.1002/celc.202400709","url":null,"abstract":"Anode-free potassium metal batteries hold significant promise for cost-effective, large-scale energy storage due to the natural abundance of potassium and its high energy density. However, practical applications have been hindered by challenges such as dendrite formation and volume expansion during cycling. To address these issues, we present a scalable strategy that incorporates bismuth microparticles into a CNT network, forming a 3D current collector (Bi@CNT). This design facilitates uniform K deposition and mitigates volume changes, leveraging the strong affinity between Bi and K as well as the ample internal space provided by the porous CNT network. The Bi@CNT current collector demonstrates exceptional reversibility and cycling stability, maintaining consistent performance for over 4100 hours under periodic current fluctuations (0.1–2.0 mA cm−2) with an areal capacity of 0.5 mAh cm−2 in no-reservoir asymmetric cells. When paired with a PTCDA cathode, the K@Bi@CNT||PTCDA full cell achieves an ultrahigh CE of ~99.9 % and remarkable capacity retention of ~92 % after 500 cycles at 200 mA g−1. These results underscore the potential of Bi@CNT current collectors in advancing the development of anode-free K metal batteries for practical applications.","PeriodicalId":142,"journal":{"name":"ChemElectroChem","volume":"12 19","pages":""},"PeriodicalIF":3.5,"publicationDate":"2025-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://chemistry-europe.onlinelibrary.wiley.com/doi/epdf/10.1002/celc.202400709","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145228075","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

The Role of Copper-Oxide Species in Copper-Catalyzed Electrochemical CO2 Reduction 铜氧化物在铜催化CO2电化学还原中的作用

IF 3.5 4区化学

ChemElectroChem Pub Date : 2025-07-23 DOI: 10.1002/celc.202500032

Yue Zhang, Ayberk Özden, Lu Gao, Jan P. Hofmann, Emiel J. M. Hensen

{"title":"The Role of Copper-Oxide Species in Copper-Catalyzed Electrochemical CO2 Reduction","authors":"Yue Zhang, Ayberk Özden, Lu Gao, Jan P. Hofmann, Emiel J. M. Hensen","doi":"10.1002/celc.202500032","DOIUrl":"10.1002/celc.202500032","url":null,"abstract":"Copper catalyzes the electrochemical reduction of CO2 (CO2RR) to valuable chemicals using renewable electricity. Although oxide-derived copper (OD-Cu) demonstrates improved CO2RR performance, particularly for C2+ products, its origin remains debated. This study investigates the role of residual copper oxide species in enhancing C2+ selectivity and stability during CO2RR. A combination of in situ Raman spectroscopy and depth-profiling X-ray photoelectron spectroscopy provides insights into the persistence of trace amounts of oxidized Cu species in OD-Cu samples and their distribution within the catalyst layer during the CO2RR. The correlation between oxidized species concentration, product distribution, and catalyst stability underscores the importance of these residual oxides. It is found that residual oxide species are more prevalent on roughened OD-Cu surfaces, characterized by a higher density of undercoordinated Cu sites. This suggests that oxidative pretreatment, by generating a roughened surface, facilitates the formation and stabilization of these oxide species. These residual oxides likely create an active site environment that favors CC coupling, explaining the enhanced C2+ product selectivity observed in OD-Cu catalysts. This improved understanding of the interplay between surface morphology, residual oxides, and active site characteristics in OD-Cu offers valuable insights for the rational design and optimization of future copper-based CO2RR catalysts.","PeriodicalId":142,"journal":{"name":"ChemElectroChem","volume":"12 18","pages":""},"PeriodicalIF":3.5,"publicationDate":"2025-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://chemistry-europe.onlinelibrary.wiley.com/doi/epdf/10.1002/celc.202500032","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145102298","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

Influence of State-of-Charge-Dependent Decomposition Kinetics at the Li6PS5Cl|LiNi0.83Co0.11Mn0.06O2 Interface on Solid-State Battery Performance Li6PS5Cl| lini0.83 co0.11 mn0.060 o2界面电荷态分解动力学对固态电池性能的影响

IF 3.5 4区化学

ChemElectroChem Pub Date : 2025-07-23 DOI: 10.1002/celc.202500237

Melina Witt, Martin A. Lange, Wolfgang G. Zeier

{"title":"Influence of State-of-Charge-Dependent Decomposition Kinetics at the Li6PS5Cl|LiNi0.83Co0.11Mn0.06O2 Interface on Solid-State Battery Performance","authors":"Melina Witt, Martin A. Lange, Wolfgang G. Zeier","doi":"10.1002/celc.202500237","DOIUrl":"10.1002/celc.202500237","url":null,"abstract":"Solid-state batteries represent a new approach to energy storage, offering superior safety, higher energy density, and extended cycle life compared to conventional liquid electrolyte-based lithium-ion batteries. However, the practical application of solid-state batteries is hindered by degradation phenomena, particularly on interfaces between components, compromising their long-term performance. In this work, the kinetics of the state-of-charge-dependent electrolyte degradation at the LiNi0.83Co0.11Mn0.06O2│Li6PS5Cl interface, as well as its influence on cycling performance, are systematically studied electrochemically in solid-state battery half cells. Combining cycling and C-rate experiments with electrochemical impedance spectroscopy reveals that half cells charged to higher cutoff potentials (≥3.8 V versus In/InLi; ≥4.4 V versus Li+/Li) exhibit significantly faster degradation kinetics. These influence the cycling performance leading to a plateau in the charge capacity at ≥3.8 V versus In/InLi, while the electrolyte degradation does not affect the bulk electrode transport. Overall, this work emphasizes the importance to investigate state-of-charge-dependent decomposition kinetics in composite electrodes to better understand cycling behavior.","PeriodicalId":142,"journal":{"name":"ChemElectroChem","volume":"12 16","pages":""},"PeriodicalIF":3.5,"publicationDate":"2025-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://chemistry-europe.onlinelibrary.wiley.com/doi/epdf/10.1002/celc.202500237","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144881470","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

Interference of the Reference Electrodes’ Leakage on the Aging of Copper Hexacyanoferrate for Aqueous Zn-Ion Batteries 参考电极泄漏对锌离子电池用六氰高铁酸铜老化的干扰

IF 3.5 4区化学

ChemElectroChem Pub Date : 2025-07-21 DOI: 10.1002/celc.202500101

Sara Sfiligoi, Fabio La Mantia, Giorgia Zampardi

引用次数: 0

Silatrane Functional Rubds-Based Catalyst for Stabilized Heterogenized Water Oxidation 硅烷功能橡胶基稳定均相水氧化催化剂

IF 3.5 4区化学

ChemElectroChem Pub Date : 2025-07-21 DOI: 10.1002/celc.202500182

Yannan Peng, Bo Chen, Jian Li, Xun Chen, Xinghua Guo, Degao Wang

{"title":"Silatrane Functional Rubds-Based Catalyst for Stabilized Heterogenized Water Oxidation","authors":"Yannan Peng, Bo Chen, Jian Li, Xun Chen, Xinghua Guo, Degao Wang","doi":"10.1002/celc.202500182","DOIUrl":"https://doi.org/10.1002/celc.202500182","url":null,"abstract":"Dye-sensitized photoelectrochemical cells (DSPECs) for water splitting into hydrogen and oxygen represent a promising approach to storing solar energy in chemical bonds. The surface-immobilized catalyst plays a crucial role in DSPEC performance. However, the water oxidation process requires substantial energy to break OH bonds, resulting in sluggish reaction kinetics. Consequently, depositing highly efficient and durable molecular water oxidation catalysts onto metal oxide surfaces presents a significant research challenge. Here, this study introduces a ruthenium-based pyridine water oxidation complex featuring a bds2− ligand (bds2− = 2,2′-bipyridine-6,6′-disulfonate) and a silatrane anchoring group for stable attachment to metal oxide semiconductors, forming a robust single-site heterogeneous catalyst. In pH 7 aqueous solution, the resulting Ru-bds (F-doped tin oxide/nanoATO/2C-bds). catalyst achieves a stable current density of 0.89 mA cm−2 and a turnover frequency of 5.1 s−1 over a 2 h test under an applied bias of 1.6 V versus normal hydrogen electrode. A variety of Ru-oxo intermediates generated during water oxidation are analyzed using in situ ultraviolet-visible, Raman, and infrared spectroscopies. These techniques provide data that support the proposed mechanism of heterogeneous water oxidation over Ru-bds catalysts. This work presents a streamlined strategy for designing stable, single-site heterogeneous catalysts for efficient solar-driven water oxidation.","PeriodicalId":142,"journal":{"name":"ChemElectroChem","volume":"12 19","pages":""},"PeriodicalIF":3.5,"publicationDate":"2025-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://chemistry-europe.onlinelibrary.wiley.com/doi/epdf/10.1002/celc.202500182","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145228034","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

Patch Clamp for MoS2 Layer-Dependent Hydrogen Evolution Reaction 基于MoS2层析氢反应的膜片钳

IF 3.5 4区化学

ChemElectroChem Pub Date : 2025-07-21 DOI: 10.1002/celc.202400715

Zhipeng Zhang, Kuan Zhai, Junhong Chen, Chunhua Han, Yuehua Wen, Yuhang Chen, Yadi Zhou, Jiayi Chen, Xiaobin Liao, Shumin Chen, Mengyu Yan

{"title":"Patch Clamp for MoS2 Layer-Dependent Hydrogen Evolution Reaction","authors":"Zhipeng Zhang, Kuan Zhai, Junhong Chen, Chunhua Han, Yuehua Wen, Yuhang Chen, Yadi Zhou, Jiayi Chen, Xiaobin Liao, Shumin Chen, Mengyu Yan","doi":"10.1002/celc.202400715","DOIUrl":"https://doi.org/10.1002/celc.202400715","url":null,"abstract":"Conventional electrochemical experiments can only obtain the average contribution of all active sites in the catalyst. Hence, it is meaningful to distinguish the electrochemical contribution of the local active sites in single-crystal catalysts. Here, a double-hole patch clamp is designed to achieve a localized electrochemical measurement in a model catalyst, MoS2. The double-hole patch clamp is further applied to measure the hydrogen evolution reaction of MoS2. By increasing the MoS2 thickness from monolayer to bilayer, the onset potential increases from 156 to 238 mV. There is no obvious electrocatalytic reaction by further increasing the MoS2 thickness to the trilayer. This could contribute to the ≈2.1 eV out-of-plane bandgap and corresponding high vertical resistance of MoS2. This double-hole patch clamp provides a new tool to understand the electrocatalysis activities of the local active sites.","PeriodicalId":142,"journal":{"name":"ChemElectroChem","volume":"12 19","pages":""},"PeriodicalIF":3.5,"publicationDate":"2025-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://chemistry-europe.onlinelibrary.wiley.com/doi/epdf/10.1002/celc.202400715","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145228035","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

Enhanced Electrochemical Detection of Heavy Metal Ions Using TPyP-sPEEK Composite-Modified Electrodes tpypp - speek复合修饰电极强化重金属离子的电化学检测

IF 3.5 4区化学

ChemElectroChem Pub Date : 2025-07-20 DOI: 10.1002/celc.202500144

Viviana Bressi, Claudia Espro, Alessandra Carbone, Claudia Granata, Angelo Ferlazzo, Kaveh Moulaee, Mariachiara Trapani, Maria Angela Castriciano, Giovanni Neri

引用次数: 0

Modeling Core-Shell Pt–Co Catalyst Degradation in Fuel Cells Using a Continuum Approach 用连续体方法模拟核壳Pt-Co催化剂在燃料电池中的降解

IF 3.5 4区化学

ChemElectroChem Pub Date : 2025-07-17 DOI: 10.1002/celc.202500055

Matej Prijatelj, Ambrož Kregar, Andraž Kravos, Tomaž Katrašnik

{"title":"Modeling Core-Shell Pt–Co Catalyst Degradation in Fuel Cells Using a Continuum Approach","authors":"Matej Prijatelj, Ambrož Kregar, Andraž Kravos, Tomaž Katrašnik","doi":"10.1002/celc.202500055","DOIUrl":"https://doi.org/10.1002/celc.202500055","url":null,"abstract":"Numerical modeling of bimetallic (BM) alloyed core-shell catalyst degradation is particularly important, since it enables the evaluation of the complex interplay between the shell thickness-dependent specific activity (SA), the resistance to electrochemical degradation, and the derivation of mitigation of poisoning resulting from dissolution of the alloying metal. Current state-of-the-art BM particle degradation models rely on a discrete approach, which is restricted to the simulation of a limited selection of core-shell particles rather than a full 2D distribution. In this study these challenges are overcome by developing a new BM catalyst degradation model based on the continuity equation and the rate of change of particle radii. Its applicability has been demonstrated by modeling the evolution of a 2D distribution of core and shell nanoparticles, and evaluating the loss of catalyst activity, not only in terms of changes in the catalyst's surface area, but also due to shell thickness-dependent SA variation. These new features of the model are further utilized to design a degradation mitigation strategy based on mixing BM and pure platinum catalysts in order to limit the alloying metal dissolution, as well as to minimize the loss of electrochemical activity.","PeriodicalId":142,"journal":{"name":"ChemElectroChem","volume":"12 19","pages":""},"PeriodicalIF":3.5,"publicationDate":"2025-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://chemistry-europe.onlinelibrary.wiley.com/doi/epdf/10.1002/celc.202500055","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145228030","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

The Impact of CO2 Regeneration Positions on Electrochemical CO2 Reduction CO2再生位置对电化学CO2还原的影响

IF 3.5 4区化学

ChemElectroChem Pub Date : 2025-07-17 DOI: 10.1002/celc.202500200

Zhuo Chen, Yuesheng Zhang, Huiying Deng, Yuhang Wang

{"title":"The Impact of CO2 Regeneration Positions on Electrochemical CO2 Reduction","authors":"Zhuo Chen, Yuesheng Zhang, Huiying Deng, Yuhang Wang","doi":"10.1002/celc.202500200","DOIUrl":"10.1002/celc.202500200","url":null,"abstract":"Implementing electrochemical CO2 reduction can decarbonize practical chemical and fuel production. However, in a typical CO2 electrolyzer, electrochemical CO2 capture (i.e., CO2 reacts with electrochemically produced OH− to form (bi)carbonates that are subsequently regenerated to CO2 by the H+ flux in the reactor) commences in parallel with its electroreduction. Such a phenomenon is observed in various electrolyzer configurations with different electrolyte compositions. This concept begins with a brief discussion on how CO2 capture occurs in CO2 electrolyzers and focuses on the impact of CO2 regeneration locations, including the anode, the electrolyte, and the ion-exchange membrane, on CO2 electrolysis performance. It is shown that the key to overcoming the low CO2 utilization and operational lifetime is positioning CO2 regeneration on ion-exchange membranes. The goal is to highlight the essential role of the ion flow management approach in designing high-performance CO2 electrolyzers. It would contribute to commercializing CO2 electrolyzers for carbon-neutral chemical synthesis.","PeriodicalId":142,"journal":{"name":"ChemElectroChem","volume":"12 16","pages":""},"PeriodicalIF":3.5,"publicationDate":"2025-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://chemistry-europe.onlinelibrary.wiley.com/doi/epdf/10.1002/celc.202500200","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144881254","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

Unveiling the Impact of Fe2O3/N-Doped Reduced Graphene Oxide Negative Electrode on the Electrochemical Performance of the Highly Stable Asymmetric Supercapacitors 揭示Fe2O3/ n掺杂还原氧化石墨烯负极对高稳定非对称超级电容器电化学性能的影响

IF 3.5 4区化学

ChemElectroChem Pub Date : 2025-07-17 DOI: 10.1002/celc.202500168

Adam Moyseowicz, Kamil Walczak, Katarzyna Gajewska, Grażyna Gryglewicz

{"title":"Unveiling the Impact of Fe2O3/N-Doped Reduced Graphene Oxide Negative Electrode on the Electrochemical Performance of the Highly Stable Asymmetric Supercapacitors","authors":"Adam Moyseowicz, Kamil Walczak, Katarzyna Gajewska, Grażyna Gryglewicz","doi":"10.1002/celc.202500168","DOIUrl":"10.1002/celc.202500168","url":null,"abstract":"This study presents all-pseudocapacitive asymmetric supercapacitors (ASCs) operating in a neutral aqueous electrolyte. Hydrothermal approach is selected for the synthesis of the active electrode materials for ASC. Fe2O3 and N-doped reduced graphene oxide (N-rGO) composites are used for negative electrode, while MnO2 and N-rGO composite is used for the positive electrode. The Fe2O3 content in the binary composite influences the porosity, morphology, and surface chemistry of the negative electrode material, which further impacts electrochemical performance and cyclic stability of the assembled ASCs. The studies show that graphene-based composites used as a negative electrode should exhibit appropriate porous structure in order to prevent undesired parasitic side reactions. The fabricated ASCs deliver high energy density up to 25.3 Wh kg−1 density at a power density of 205 W kg−1 when operated at 2 V in 1 M Na2SO4. The most stable configuration maintains almost 94% of the initial capacitance after 10 000 charge–discharge cycles. These components demonstrate the potential to fabricate environment-friendly, efficient, and reliable energy storage devices when combined in the proposed configuration with binary Fe2O3 (FNG) and MnO2 (MNG) composites and a neutral aqueous electrolyte.","PeriodicalId":142,"journal":{"name":"ChemElectroChem","volume":"12 17","pages":""},"PeriodicalIF":3.5,"publicationDate":"2025-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://chemistry-europe.onlinelibrary.wiley.com/doi/epdf/10.1002/celc.202500168","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144927723","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