ChemElectroChem最新文献_第4页

Front Cover: Detection of Micromolar Glucose Levels in Human Sweat Using an Organic Transistor-Based Enzymatic Sensor (ChemElectroChem 19/2024) 封面：利用基于有机晶体管的酶传感器检测人体汗液中的微摩尔葡萄糖水平（ChemElectroChem 19/2024）

IF 3.5 4区化学

ChemElectroChem Pub Date : 2024-09-30 DOI: 10.1002/celc.202481901

Dr. Yui Sasaki, Kohei Ohshiro, Miyuki Kato, Dr. Daijiro Haba, Prof. Dr. Gojiro Nakagami, Prof. Dr. Tsuyoshi Minami

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Structure and Conductivity of Crosslinked Ca-POE Polymer Electrolytes for Secondary Batteries 用于二次电池的交联 Ca-POE 聚合物电解质的结构和电导率

IF 3.5 4区化学

ChemElectroChem Pub Date : 2024-09-27 DOI: 10.1002/celc.202400315

Dr. Federico Brombin, Dr. Gioele Pagot, Prof. Keti Vezzù, Dr. Raul San Roman, Prof. Cynthia Susana Martinez Cisneros, Dr. Nieves Ureña, Prof. Alejandro Varez, Prof. Jean-Yves Sanchez, Prof. Vito Di Noto

{"title":"Structure and Conductivity of Crosslinked Ca-POE Polymer Electrolytes for Secondary Batteries","authors":"Dr. Federico Brombin, Dr. Gioele Pagot, Prof. Keti Vezzù, Dr. Raul San Roman, Prof. Cynthia Susana Martinez Cisneros, Dr. Nieves Ureña, Prof. Alejandro Varez, Prof. Jean-Yves Sanchez, Prof. Vito Di Noto","doi":"10.1002/celc.202400315","DOIUrl":"https://doi.org/10.1002/celc.202400315","url":null,"abstract":"Poly(oxyethylene) (POE) is frequently used as suitable component to prepare solid polymer electrolytes (SPEs), due to its: (i) ability to coordinate and dissociate doping salts; (ii) good mechanical properties; and (iii) high chemical and electrochemical stability. With the aim to obtain calcium secondary batteries, here we describe the preparation and studies of crosslinked Ca-polycondensate (NPCY) electrolytes with formula NPCY/(CaTf2)x based on fragments of POE chains and CaTf2. The molecular weight of POE precursors is Y=400 and 1000 g ⋅ mol−1. The effect of POE molecular weight on the thermal, structural, and electrical properties of NPCY/(CaTf2)x is investigated revealing that in mesoscale this materials show: (i) two different nanodomains with polyether chains both “free” (not coordinating the cation) and involved in 4–4 coordination cages of Ca2+ metal ions; (ii) fα-fast, fα-cross and fα-slow relaxation modes of polyether chains, detected by broadband electrical spectroscopy, which are coupled with the long-range charge migration pathways of SPEs; (iii) that triflate (Tf−) anions, which act as plasticizers, modulate the inter-chain migration processes of Ca2+ between polyether coordination sites. Finally, the conductivity values of NPCY/(CaTf2)x, which is up to 10−4 S ⋅ cm−1 at 80 °C, classify NPCY/(CaTf2)x as promising SPEs for the development of calcium secondary batteries.","PeriodicalId":142,"journal":{"name":"ChemElectroChem","volume":"11 20","pages":""},"PeriodicalIF":3.5,"publicationDate":"2024-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/celc.202400315","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142443532","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

Cost-Effective Solutions for Lithium-Ion Battery Manufacturing: Comparative Analysis of Olefine and Rubber-Based Alternative Binders for High-Energy Ni-Rich NCM Cathodes 锂离子电池制造的成本效益解决方案：用于高能量富镍 NCM 阴极的烯烃基和橡胶基替代粘合剂的比较分析

IF 3.5 4区化学

ChemElectroChem Pub Date : 2024-09-24 DOI: 10.1002/celc.202400465

Susan Montes, Alexander Beutl, Andrea Paolella, Marcus Jahn, Artur Tron

{"title":"Cost-Effective Solutions for Lithium-Ion Battery Manufacturing: Comparative Analysis of Olefine and Rubber-Based Alternative Binders for High-Energy Ni-Rich NCM Cathodes","authors":"Susan Montes, Alexander Beutl, Andrea Paolella, Marcus Jahn, Artur Tron","doi":"10.1002/celc.202400465","DOIUrl":"https://doi.org/10.1002/celc.202400465","url":null,"abstract":"Promoting safer and more cost-effective lithium-ion battery manufacturing practices, while also advancing recycling initiatives, is intrinsically tied to reducing reliance on fluorinated polymers like polyvinylidene difluoride (PVDF) as binders and minimizing the use of hazardous and expensive solvents such as N-methyl pyrrolidone (NMP). In pursuit of this objective, olefin- and rubber-based polymers have been investigated as promising alternatives for binder materials in high-energy Ni-rich LiNixCoyMnzO2 (NCM, x≥0.8) cathodes for lithium-ion batteries (LIBs). Alternative binders such as polyisobutylene (PIB), poly(styrene-butadiene-styrene) (SBS), nitrile butadiene rubber (NBR), and its hydrogenated version (HNBR) offer versatile solutions. These polymers can be dissolved in industrial solvents, such as toluene, and have been further processed into homogeneous cathode slurries, thus facilitating the manufacturing of high-energy Ni-rich NCM cathodes for lithium-ion batteries. The evaluation of NCM811 cathodes obtained from PIB, SBS, NBR, and HNBR has involved a thorough assessment of their physical and chemical properties, electrochemical performance, and production expenses, compared with NCM811 cathodes based on PVDF. Notably, cathodes employing PIB and HNBR have exhibited outstanding qualities, showcasing high specific capacity and remarkable electrochemical stability akin to PVDF-based counterparts. Furthermore, the alternative binders′ superior adhesion, elasticity, and thermal stability have facilitated obtaining uniform and mechanically stable cathode films. Furthermore, using toluene, with its low vapor pressure, has significantly reduced energy costs associated with drying processes, thereby enhancing the overall cost-effectiveness of the NCM811 cathodes.","PeriodicalId":142,"journal":{"name":"ChemElectroChem","volume":"11 21","pages":""},"PeriodicalIF":3.5,"publicationDate":"2024-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/celc.202400465","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142666118","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

Advances in 3D Materials-Based Hydrovoltaic Generators and Synergistic Energy Conversion 基于三维材料的水力发电机和协同能源转换的进展

IF 3.5 4区化学

ChemElectroChem Pub Date : 2024-09-23 DOI: 10.1002/celc.202400330

Kai Jiao, Boxuan Ma, Xinxi Liu, Bohao Chen, Qiuwang Wang, Cunlu Zhao

{"title":"Advances in 3D Materials-Based Hydrovoltaic Generators and Synergistic Energy Conversion","authors":"Kai Jiao, Boxuan Ma, Xinxi Liu, Bohao Chen, Qiuwang Wang, Cunlu Zhao","doi":"10.1002/celc.202400330","DOIUrl":"https://doi.org/10.1002/celc.202400330","url":null,"abstract":"Covering approximately 71 % of Earth's surface and absorbing almost 70 % of the solar radiation energy, water presents a tremendous opportunity for hydropower generation, revealing considerable promise for future applications. Benefited from the low cost, negligible pollution, and the characteristic of solely utilizing ambient thermal energy, hydrovoltaic (HV) technology has garnered significant attention in recent years for its substantial contributions to energy harvesting and conversion. While traditional hydrovoltaic generators (HVGs) have predominantly utilized two-dimensional (2D) structures, the emergence of three-dimensional (3D) HV materials signifies a pivotal shift due to superior specific surface areas, intricate porous architectures and enhanced mechanical strength. Herein, we summarized the development of 3D HVGs, categorizing them into flow-induced, moisture-induced, and evaporation-induced types. We explored their working mechanisms, evolutions, strategies for electricity output enhancement and the limitations they face. Moreover, we discussed the integration of HVGs with other energy conversion technologies and the development of comprehensive HVG systems that exploit various water sources for energy generation. At last, we highlighted the challenges confronting 3D HVGs and anticipated future directions for this burgeoning field.","PeriodicalId":142,"journal":{"name":"ChemElectroChem","volume":"11 20","pages":""},"PeriodicalIF":3.5,"publicationDate":"2024-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/celc.202400330","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142443575","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

H/D Isotope Effects in the Electrochemistry of Electrochromic Iron Hexacyanoruthenate 电致变色六氰钌酸铁电化学中的 H/D 同位素效应

IF 3.5 4区化学

ChemElectroChem Pub Date : 2024-09-23 DOI: 10.1002/celc.202300824

Lena Gerhards, Izabella Brand, Gunther Wittstock

{"title":"H/D Isotope Effects in the Electrochemistry of Electrochromic Iron Hexacyanoruthenate","authors":"Lena Gerhards, Izabella Brand, Gunther Wittstock","doi":"10.1002/celc.202300824","DOIUrl":"https://doi.org/10.1002/celc.202300824","url":null,"abstract":"The electrochemical deposition of iron hexacyanoruthenate (Fe−HCR) on gold electrodes was studied in electrolytes prepared with light and heavy water. Cyclic voltammetry of the material during preparation and after transfer to a precursor-free solution exhibits two reductions peaks in H2O-based electrolytes but only one reduction peak in D2O-based electrolytes. The voltammetric behavior changes reversibly upon transfer of the material between D2O-based and H2O-based 1 mol L−1 KCl solutions. No clear structural differences between samples prepared in D2O and H2O were detected by means of X-ray photoelectron spectroscopy (XPS) and polarization modulation infrared reflection absorption spectroscopy (PM IRRAS). We noted a relatively slow exchange of coordinated water and a fast exchange of zeolitic water. Using voltammetric experiments we could rule out simple effects of solution conductivity for K+, participation of H+/D+ in the charge compensation and surface effects on the observed dependence of the peak splitting on the isotopic composition of the solvent. The most likely reason for the observed behavior is the different structure of the H-bonded water network of coordinated H2O and zeolitic H2O/D2O which is supported by the PM IRRAS data.","PeriodicalId":142,"journal":{"name":"ChemElectroChem","volume":"11 20","pages":""},"PeriodicalIF":3.5,"publicationDate":"2024-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/celc.202300824","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142443603","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

Transpassive Behavior of Equimolar CrMnFeCoNi and CrCoNi Multi-Principal Element Alloys in an Alkaline NaCl Electrolyte 等摩尔铬锰铁合金和铬钴镍多元素合金在碱性氯化钠电解液中的渗透行为

IF 3.5 4区化学

ChemElectroChem Pub Date : 2024-09-20 DOI: 10.1002/celc.202400346

Annica Wetzel, Daniel Morell, Marcus von der Au, Julia Witt, Ozlem Ozcan

{"title":"Transpassive Behavior of Equimolar CrMnFeCoNi and CrCoNi Multi-Principal Element Alloys in an Alkaline NaCl Electrolyte","authors":"Annica Wetzel, Daniel Morell, Marcus von der Au, Julia Witt, Ozlem Ozcan","doi":"10.1002/celc.202400346","DOIUrl":"https://doi.org/10.1002/celc.202400346","url":null,"abstract":"We investigated the corrosion properties and transpassive behavior of CrMnFeCoNi and CrCoNi multi-principal element alloys (MPEAs) in a 0.1 M NaCl electrolyte at pH 12. By using SECM-based tip substrate voltammetry (TSV) in combination with the chemical analysis of the electrolyte, we were able to differentiate between anodic metal dissolution and oxygen evolution in the transpassive range. Our investigations have shown that CrCoNi has a significantly higher corrosion resistance compared to CrMnFeCoNi. In the studied alkaline environment, a transpassive oxide film is formed on the surface of CrCoNi during secondary passivation. This transpassive oxide film appears to play a significant role in oxygen evolution, as the increase in TSV currents at the microelectrode coincides with the corresponding current density plateau of the voltametric current trace. The formation of the transpassive oxide film was not observed in previous studies conducted in acidic environments. Moreover, the alkaline electrolyte induced a positive hysteresis and mild pitting corrosion, in addition to intergranular corrosion, which was the sole corrosion process observed at acidic pH levels. These findings enhance the understanding of the processes governing the transpassivity of CrMnFeCoNi and CrCoNi MPEAs in alkaline environments and have potential implications for the development of application-tailored corrosion-resistant MPEAs.","PeriodicalId":142,"journal":{"name":"ChemElectroChem","volume":"11 20","pages":""},"PeriodicalIF":3.5,"publicationDate":"2024-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/celc.202400346","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142443466","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

Characterization of Porous Transport Layers Towards the Development of Efficient Proton Exchange Membrane Water Electrolysis 表征多孔传输层以开发高效质子交换膜电解水技术

IF 3.5 4区化学

ChemElectroChem Pub Date : 2024-09-20 DOI: 10.1002/celc.202400377

Genevieve Stelmacovich, Svitlana Pylypenko

{"title":"Characterization of Porous Transport Layers Towards the Development of Efficient Proton Exchange Membrane Water Electrolysis","authors":"Genevieve Stelmacovich, Svitlana Pylypenko","doi":"10.1002/celc.202400377","DOIUrl":"https://doi.org/10.1002/celc.202400377","url":null,"abstract":"The current goals for implementing the hydrogen economy have highlighted a need to further optimize water-splitting technologies for clean hydrogen production. Proton exchange membrane water electrolysis (PEMWE) is a leading technology, but further optimizations of anode materials including the porous transport layer (PTL) and the adjacent catalyst layer (CL) are required to increase overall cell performance and reduce cost. This literature review describes advances in PTL development and characterization, highlighting early PTL characterization work and most common methods including capillary flow porometry and mercury intrusion porometry, optical imaging, neutron and x-ray radiography, and x-ray computed tomography. The article also discusses PTL protective coatings and their characterizations, focusing on platinum group metal (PGM)-based coatings, alternative non-PGM-based coatings, post-treated PTLs, and investigations into thin PGM-based coatings. Furthermore, it highlights the integration of the PTL and the adjacent CL along with associated characterization challenges. Lastly, this review discusses future developments in the characterization needed to improve PEMWE's performance and long-term durability are discussed.","PeriodicalId":142,"journal":{"name":"ChemElectroChem","volume":"11 20","pages":""},"PeriodicalIF":3.5,"publicationDate":"2024-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/celc.202400377","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142443465","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

Front Cover: pH Dependence of Noble Metals Dissolution: Gold (ChemElectroChem 18/2024) 封面：贵金属溶解的 pH 依赖性：金 (ChemElectroChem 18/2024)

IF 3.5 4区化学

ChemElectroChem Pub Date : 2024-09-17 DOI: 10.1002/celc.202481801

Kevin Stojanovski, Dr. Valentín Briega-Martos, Matej Zlatar, Christian Göllner, Dr. Serhiy Cherevko

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Photo-induced Intercalation of Cobalt(II) Tellurium Oxide as an Oxygen Evolution (Photo)electrocatalyst 光诱导碲钴(II)氧化物互嵌作为氧进化（光）电催化剂

IF 3.5 4区化学

ChemElectroChem Pub Date : 2024-09-17 DOI: 10.1002/celc.202481802

Prof. Roelof J. Kriek, Dr. Oluwaseun A. Oyetade, Dr. Nyengerai H. Zingwe, Prof. Emanuela Carleschi, Prof. Bryan P. Doyle, Dr. Jaco Koch

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Investigation on Psyllium Gum as a Bio-Based Binder for Silicon Anode in Lithium-Ion Batteries 关于车前子胶作为锂离子电池硅负极生物基粘合剂的研究

IF 3.5 4区化学

ChemElectroChem Pub Date : 2024-09-17 DOI: 10.1002/celc.202400449

Şebnem Cingisiz, Emin Arca, Rezan Demir-Cakan

{"title":"Investigation on Psyllium Gum as a Bio-Based Binder for Silicon Anode in Lithium-Ion Batteries","authors":"Şebnem Cingisiz, Emin Arca, Rezan Demir-Cakan","doi":"10.1002/celc.202400449","DOIUrl":"10.1002/celc.202400449","url":null,"abstract":"Silicon (Si) anode is of considerable interest in Li-ion batteries due to its high theoretical capacity (4200 mAh g−1), abundant reserves in the earth, and environmentally friendly nature. Although Si anode has significant advantages, the electrode is prone to cracks due to large volume changes in its structure during discharge cycles in Li-ion batteries. Rapid capacity degradation occurs as a result of deterioration of the structural integrity of the electrode. Although binders are known to contribute to improving the electrochemical performance of anode materials, polyvinylidene fluoride (PVdF) used in commercial Li-ion batteries cannot maintain the mechanical stability of the Si anode during cycles due to weak Van der Waals interactions, which also dissolves in the flammable, explosive and volatile solvent N-Methyl-2-pyrrolidone (NMP). In this study, low cost, sustainable and environmentally green psyllium gum (PG) was extracted from psyllium husk and tested for the first time as a water-soluble binder for Si anode. According to galvanostatic charge/discharge tests, the Si-PG anode exhibits a capacity of 1415 mAh g−1 after 100 cycles at a voltage range of 0.01–1.5 V and current density of C/2, which is almost 3 times higher than the Si-PVdF anode (494 mAh g−1).","PeriodicalId":142,"journal":{"name":"ChemElectroChem","volume":"11 20","pages":""},"PeriodicalIF":3.5,"publicationDate":"2024-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/celc.202400449","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142266699","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