Journal of The Electrochemical Society最新文献_第10页

Fueling from the Electrochemistry of Halide Solid Electrolytes 从卤化物固体电解质的电化学中获取燃料

Journal of The Electrochemical Society Pub Date : 2024-05-16 DOI: 10.1149/1945-7111/ad4c99

Branimir Stamenkovic, Ying Shirley Meng, Philippe MOREAU, Joël Gaubicher

引用次数: 0

Impacts of Catalyst Ink Composition and Wet Film Thickness on Fuel Cell Catalyst Layers Fabricated by Direct Film Coating Method 催化剂油墨成分和湿膜厚度对直接涂膜法制造的燃料电池催化剂层的影响

Journal of The Electrochemical Society Pub Date : 2024-05-15 DOI: 10.1149/1945-7111/ad4c11

J. Stoll, Jisung Jeong, Philip Huynh, E. Kjeang

{"title":"Impacts of Catalyst Ink Composition and Wet Film Thickness on Fuel Cell Catalyst Layers Fabricated by Direct Film Coating Method","authors":"J. Stoll, Jisung Jeong, Philip Huynh, E. Kjeang","doi":"10.1149/1945-7111/ad4c11","DOIUrl":"https://doi.org/10.1149/1945-7111/ad4c11","url":null,"abstract":"\u0000 Utilizing a direct film coating method (DFCM), such as doctor blade coating, offers a promising approach for efficient and scalable catalyst layer (CL) production for fuel cells. To further widen the understanding of lab-scale DFCM, the present research investigates how different Pt-based catalyst ink formulations coated via doctor blade coating with varying blade gap thickness (BGT) affect the CL quality and catalyst loading. In total, 120 CL samples were prepared by coating 20 different catalyst ink formulations with varying solids content, ionomer-to-carbon (I/C) ratio, and water-to-isopropanol solvent ratio with BGTs of 75, 125, and 200 μm. Inspection of these samples showed that the solvent ratio affects the coating uniformity, with the most uniform films achieved with a ratio of 1.67 or greater. Furthermore, increasing the I/C ratio for a given solids content ink formulation decreases the Pt loading, whereas an I/C ratio above or below 1.0 reduces cell performance due to mass transport or proton conductivity impacts, respectively. In addition, a relationship factor and equations are presented to estimate the solid weight and catalyst loading of the fabricated CL based on the ink formulation and BGT. Overall, this work provides important guidance for lab-scale DFCM fabrication of industrially relevant CLs","PeriodicalId":509718,"journal":{"name":"Journal of The Electrochemical Society","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140972972","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effects of Process-Induced Defects on the Corrosion of Additively Manufactured Stainless Steel 304L 工艺诱发的缺陷对添加剂制造的不锈钢 304L 腐蚀的影响

Journal of The Electrochemical Society Pub Date : 2024-05-15 DOI: 10.1149/1945-7111/ad4c0f

L. Saberi, Frank Liou, Mehdi Amiri

{"title":"Effects of Process-Induced Defects on the Corrosion of Additively Manufactured Stainless Steel 304L","authors":"L. Saberi, Frank Liou, Mehdi Amiri","doi":"10.1149/1945-7111/ad4c0f","DOIUrl":"https://doi.org/10.1149/1945-7111/ad4c0f","url":null,"abstract":"\u0000 This study investigates the impact of process-induced defects such as gas pores, lack of fusions, and surface roughness on corrosion behavior of stainless steel 304L (SS304L) fabricated by laser powder bed fusion additive manufacturing. Specimens are printed with optimized process parameters but selected from different locations on the build plate. Parallel and perpendicular surfaces to the build direction are investigated and compared with corrosion properties of wrought SS304L in 5wt.% NaCl. The results reveal significant difference in corrosion behavior among specimens due to variations in their defect features. Pitting potential, pit initiation, and growth rates are found to be influenced by specimen location on the build plate. The specimen located in downstream of the shielding gas flow shows the least corrosion resistance. While no clear trends are observed between some corrosion properties and defect features, other properties show strong correlations. For example, no trend is observed for the corrosion properties in relation to pore average area fraction. However, strong correlations are observed for the corrosion properties as functions of defects maximum area. Corrosion properties linearly deteriorate as the defects maximum area increases. Roughness shows a mixed relationship with pitting potential. Comprehensive discussions on all these effects are presented.","PeriodicalId":509718,"journal":{"name":"Journal of The Electrochemical Society","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140972415","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Review—Self-Supporting Electrocatalysts for HER in Alkaline Water Electrolysis 回顾--碱性水电解中 HER 的自支撑电催化剂

Journal of The Electrochemical Society Pub Date : 2024-05-15 DOI: 10.1149/1945-7111/ad4c0d

Endao Zhang, Wei Song

{"title":"Review—Self-Supporting Electrocatalysts for HER in Alkaline Water Electrolysis","authors":"Endao Zhang, Wei Song","doi":"10.1149/1945-7111/ad4c0d","DOIUrl":"https://doi.org/10.1149/1945-7111/ad4c0d","url":null,"abstract":"\u0000 Hydrogen is a prime candidate for replacing fossil fuels. Electrolyzing water to produce hydrogen stands out as a particularly clean method, garnering significant attention from researchers in recent years. Among the various techniques for electrolyzing water to produce hydrogen, alkaline electrolysis holds the most promise for large-scale industrialization. The key to advancing this technology lies in the development of durable and cost-effective electrocatalysts for the hydrogen evolution reaction (HER). Self-supporting electrode is an electrode structure in which a catalyst layer is formed directly on a substrate (such as carbon cloth, nickel foam, stainless steel, etc.) without using a binder and with good structural stability. In contrast to traditional nanocatalysts, self-supporting electrocatalysts offer significant advantages, including reduced resistance, enhanced stability, and prolonged usability under high currents. This paper reviews recent advancements in HER electrochemical catalysts for alkaline water electrolysis, focusing on the utilization of hydrogen-evolving catalysts such as metal sulfides, phosphides, selenides, oxides, and hydroxides. With self-supported electrocatalysts as the focal point, the paper delves into progress made in their preparation techniques, structural design, understanding of reaction mechanisms, and strategies for performance enhancement. Ultimately, the future development direction of promoting hydrogen evolution by self-supported electrocatalysts in alkaline water electrolysis is summarized.","PeriodicalId":509718,"journal":{"name":"Journal of The Electrochemical Society","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140975102","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Electrochemical Characterization of Nickel / Gadolinia Doped Ceria Fuel Electrodes under H2/H2O/CO/CO2-Atmospheres 掺杂钆铈的镍燃料电极在 H2/H2O/CO/CO2 大气环境下的电化学特性分析

Journal of The Electrochemical Society Pub Date : 2024-05-15 DOI: 10.1149/1945-7111/ad4c10

Daniel Esau, Cedric Grosselindemann, S. Sckuhr, F. Kullmann, Adrian Lindner, Zhida Liang, Franz‐Martin Fuchs, A. Weber

{"title":"Electrochemical Characterization of Nickel / Gadolinia Doped Ceria Fuel Electrodes under H2/H2O/CO/CO2-Atmospheres","authors":"Daniel Esau, Cedric Grosselindemann, S. Sckuhr, F. Kullmann, Adrian Lindner, Zhida Liang, Franz‐Martin Fuchs, A. Weber","doi":"10.1149/1945-7111/ad4c10","DOIUrl":"https://doi.org/10.1149/1945-7111/ad4c10","url":null,"abstract":"\u0000 Modelling of the co-electrolysis process requires understanding of the underlying reaction pathways under H2/H2O/CO/CO2-atmospheres. These include the electrochemical steam reduction/hydrogen oxidation, the electrochemical CO2 reduction/CO oxidation and their coupling via the catalytic (reverse) water gas shift reaction ((R)WGS). The assumption of a very fast RWGS and therefore neglectable electrochemical CO2 conversion is commonly used to model the co-electrolysis process. In contrast, previous studies on Ni/GDC fuel electrodes suggest that the electrochemical conversion of CO / CO2 can be present in H2/H2O/CO/CO2-atmospheres. To deconvolute surface-related and non-surface-related processes in the impedance response we present results from a complex variation of operating parameters for process identification by the use of electrochemical impedance spectroscopy and the subsequent impedance analysis by the distribution of relaxation times. A physically meaningful equivalent circuit model, based on a single channel transmission line, is then derived. The model enables quantification of the surface reaction resistance under varied C/H-ratios. From a kinetic analysis it is shown that the electrochemical H2/H2O conversion is dominant for y_CO+y_(CO_2 )≤ 50% and electrochemical CO/CO2-conversion onsets from y_CO+y_(CO_2 )≥ 60%.","PeriodicalId":509718,"journal":{"name":"Journal of The Electrochemical Society","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140976077","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The Development of a Stable and Practical Saturated Reference Electrode for Molten Chloride Salt Systems 为熔融氯盐系统开发稳定实用的饱和参比电极

Journal of The Electrochemical Society Pub Date : 2024-05-15 DOI: 10.1149/1945-7111/ad4c0c

Jason Marvin Torrie, Ranon Fuller, Devin Rappleye

引用次数: 0

Review—Recent Advancements in Molybdenum Carbides for Efficient Hydrogen Evolution Reaction 回顾-用于高效氢气进化反应的碳化钼的最新研究进展

Journal of The Electrochemical Society Pub Date : 2024-05-15 DOI: 10.1149/1945-7111/ad4c0e

Vinh Van Tran, Daeho Lee, Vu Khac Hoang Bui, Nguyen Tien Tran, Hai Bang Truong, Ha Huu Do

{"title":"Review—Recent Advancements in Molybdenum Carbides for Efficient Hydrogen Evolution Reaction","authors":"Vinh Van Tran, Daeho Lee, Vu Khac Hoang Bui, Nguyen Tien Tran, Hai Bang Truong, Ha Huu Do","doi":"10.1149/1945-7111/ad4c0e","DOIUrl":"https://doi.org/10.1149/1945-7111/ad4c0e","url":null,"abstract":"\u0000 The quest for economical and sustainable electrocatalysts to facilitate the hydrogen evolution reaction (HER) is paramount in addressing the pressing challenges associated with carbon dioxide emissions. Molybdenum carbide-based nanomaterials have emerged as highly promising electrocatalysts for HER due to their Pt-like catalytic proficiency, exceptional stability, and the versatility of their crystal phases. Within this comprehensive review, we explore the diverse methodologies for synthesizing molybdenum carbides, including solid-gas, solid-solid, and solid-liquid phase reactions. In addition, a thorough elucidation of the hydrogen generation process through water electrolysis is provided. Furthermore, a spectrum of innovative strategies aimed at augmenting the performance of molybdenum carbides in the HER milieu is introduced, encompassing cutting-edge techniques such as phase-transition engineering, the construction of heterostructures, hetero-atom doping, the integration of hybrid structures with carbon materials, defect engineering, and meticulous surface modification. The review culminates by underscoring the current challenges and the promising prospects in the advancement of electrocatalysts for hydrogen production, with a dedicated focus on molybdenum carbide-based catalysts.","PeriodicalId":509718,"journal":{"name":"Journal of The Electrochemical Society","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140974927","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Green Electrochemical Sensing: Novel Ion-Selective Electrode Method for Precise Determination of Dimenhydrinate and its Metabolite along with Cinnarizine in Pharmaceutical and Plasma Samples 绿色电化学传感：新型离子选择性电极法精确测定药物和血浆样品中的二苯海拉明及其代谢物和辛那利嗪

Journal of The Electrochemical Society Pub Date : 2024-05-14 DOI: 10.1149/1945-7111/ad4ba4

Shereen Hassan Boltia, E. M. Morgan, Reem H. Obaydo, Y. Fayez, M. Abdelkawy, H. Lotfy

{"title":"Green Electrochemical Sensing: Novel Ion-Selective Electrode Method for Precise Determination of Dimenhydrinate and its Metabolite along with Cinnarizine in Pharmaceutical and Plasma Samples","authors":"Shereen Hassan Boltia, E. M. Morgan, Reem H. Obaydo, Y. Fayez, M. Abdelkawy, H. Lotfy","doi":"10.1149/1945-7111/ad4ba4","DOIUrl":"https://doi.org/10.1149/1945-7111/ad4ba4","url":null,"abstract":"\u0000 Green and sustainable scientific research is crucial for health and environmental improvement. Electrochemical analysis simplifies complex processes, saving time and cost. Ion selective electrode method, a key in green analytical chemistry, was utilized. A highly selective solid contact sensor was developed for two applications, detecting cinnarizine (CIN) and dimenhydrinate (DMH) in pharmaceuticals, and identifying CIN and diphenhydramine (DIP) in human plasma. Careful selection of ionophores ensured accurate detection. Multi-wall carbon-nanotubes (MWCNTs) facilitate rapid and precise measurement. The concentration range for CIN, DMH, and DIP was 1 × 10−6 M to 1 × 10−2 M, with mean recovery% of 100.07 ± 0.80, 100.12 ± 0.76, and 100.07 ± 0.53, respectively. Validation parameters exhibited accuracy and precision, with accuracy results of 100.87 ± 0.89, 99.96 ± 0.42, and 99.82 ± 0.31, and LODs of 0.5 x 10-6, 1.0 x 10-7, and 0.2 x 10-6 for CIN, DMH, and DIP, respectively. The study highlighted benefits like speed, economy, and sustainability, emphasizing the electrode's reusability. SWOT analysis and environmental assessments further underscored its advantages, promising applications in pharmaceutical analysis and quality control.","PeriodicalId":509718,"journal":{"name":"Journal of The Electrochemical Society","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140979738","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Rod-Like MnMoO4 with Excellent Electrochemical Performance as Sensing Material to Detect Triethylamine 具有优异电化学性能的棒状 MnMoO4 用作检测三乙胺的传感材料

Journal of The Electrochemical Society Pub Date : 2024-05-14 DOI: 10.1149/1945-7111/ad4ba2

Shuai-Shuai Lv, Yu-Feng Liu, Si-Qi Jiao, Chuning Jiang, Cheng Zhang, Xiaohong Zheng

引用次数: 0

Isotropic Structure and Polymer Interface Intensified Lithium-Ion Transmission in Spherical Graphite Tailings/Coke Composite Anode 各向同性结构和聚合物界面强化了球形石墨尾矿/焦炭复合负极中的锂离子传输

Journal of The Electrochemical Society Pub Date : 2024-05-14 DOI: 10.1149/1945-7111/ad4b5e

kaixuan Bian, Yue Meng, Yu Fu, Lili Feng, Zhi Wang, Junhao Liu, Xuzhong Gong

{"title":"Isotropic Structure and Polymer Interface Intensified Lithium-Ion Transmission in Spherical Graphite Tailings/Coke Composite Anode","authors":"kaixuan Bian, Yue Meng, Yu Fu, Lili Feng, Zhi Wang, Junhao Liu, Xuzhong Gong","doi":"10.1149/1945-7111/ad4b5e","DOIUrl":"https://doi.org/10.1149/1945-7111/ad4b5e","url":null,"abstract":"\u0000 Spherical graphite tailings (SGT) as the anode electrode for a lithium-ion battery not only improves the utilization value of SGT as solid waste, but also demonstrates the cleaner production of natural flake graphite (NG) compared with artificial graphite. However, SGT anodes present issues regarding rate performance and cycle stability due to the anisotropy structure and the instability of the solid electrolyte interface (SEI). In this work, a composite anode with isotropic structure was prepared by granulation of high-sulfur coal (HSC) and SGT, while an artificial SEI was prepared utilizing polyether amine/polyvinyl pyrrolidone (PEA/PVP) crosslinked polymer. Results showed that the coke from HSC pyrolysis enhanced the isotropy of the composite anode and improved its rate performance. Compared with SGT, the capacity retention rate of the sample (OSGT-50%OHSC) after oxidation - pyrolysis at a high current density of 5.0 A g-1 increased from 7.2% to 25.8%. Additionally, the PEA/PVP artificial SEI strengthened the cycle stability of the anode. After 1000 cycles, the capacity retention rate increased from 22.5% to 70.3%. The artificial SEI effectively avoided direct contact between the anode and the electrolyte, increasing the initial coulombic efficiency from 70.3% to 77.1%.","PeriodicalId":509718,"journal":{"name":"Journal of The Electrochemical Society","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140982153","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0