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

Bismuth Metal Porphyrin Framework Doped RuO2 Derived Bi2O3-RuO2@C Composites for Highly Selective CO2 Electroreduction 掺杂 RuO2 的铋金属卟啉框架衍生 Bi2O3-RuO2@C 复合材料用于高选择性二氧化碳电还原

IF 3.9 4区工程技术

Journal of The Electrochemical Society Pub Date : 2024-09-08 DOI: 10.1149/1945-7111/ad7532

Mingran Yang, Yingchen Xu, Zhengcha Pang, Chenghan Yang, Jinqiang Huang, Min Zhu and Yiwei Zhang

{"title":"Bismuth Metal Porphyrin Framework Doped RuO2 Derived Bi2O3-RuO2@C Composites for Highly Selective CO2 Electroreduction","authors":"Mingran Yang, Yingchen Xu, Zhengcha Pang, Chenghan Yang, Jinqiang Huang, Min Zhu and Yiwei Zhang","doi":"10.1149/1945-7111/ad7532","DOIUrl":"https://doi.org/10.1149/1945-7111/ad7532","url":null,"abstract":"In electrochemical reduction of carbon dioxide (CO2RR), the design of electrocatalysts with high efficiency and selectivity is very important and challenging. In this paper, a ternary composite consisting of ruthenium dioxide and bismuth metal porphyrin-based organic framework (Bi-TCPP MOF)-derived bismuth trioxide and C skeleton has been proposed (denoted as Bi2O3-RuO2@C). Nanoscale RuO2 and Bi2O3 particles are uniformly distributed on the C skeleton. The precursor bismuth metal porphyrin-based organic framework restricts the localized growth of Bi2O3 in the framework, while the unique, highly-conjugated system anchors the doped RuO2 particles, resulting in a uniform distribution of both active sites and hole-enrichment centers. Meanwhile, the Bi-TCPP MOF-derived carbon skeleton has good electrical conductivity, and the macroporous structure also facilitates the gas transport, which leads to the synthesis of Bi2O3-RuO2@C as an electrocatalyst for CO2RR and exhibits excellent catalytic performance and high selectivity for electrocatalytic carbon dioxide reduction to methane (CO2-CH4). The peak Faraday efficiency of Bi2O3-RuO2@C for catalyzing the reduction of CO2-CH4 can reach 66.95% when the doped RuO2 content is 20%. Importantly, this work opens up new horizons for metal ratio regulation in constructing efficient catalytic systems derived from MOFs.","PeriodicalId":17364,"journal":{"name":"Journal of The Electrochemical Society","volume":"29 1","pages":""},"PeriodicalIF":3.9,"publicationDate":"2024-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142222404","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

Selectivity Study of Direct Seawater Electrolyzer Anode Catalysts Using the Rotating Ring-Disc Electrode Method 使用旋转环盘电极法研究直接海水电解槽阳极催化剂的选择性

IF 3.9 4区工程技术

Journal of The Electrochemical Society Pub Date : 2024-09-06 DOI: 10.1149/1945-7111/ad7407

O. Horner, D. P. Wilkinson, E. L. Gyenge

{"title":"Selectivity Study of Direct Seawater Electrolyzer Anode Catalysts Using the Rotating Ring-Disc Electrode Method","authors":"O. Horner, D. P. Wilkinson, E. L. Gyenge","doi":"10.1149/1945-7111/ad7407","DOIUrl":"https://doi.org/10.1149/1945-7111/ad7407","url":null,"abstract":"Seawater electrolysis suffers from many issues that must be resolved before the technology can be scaled. The corrosive hypochlorite formation at the anode can damage the electrode and other electrolyzer components. Furthermore, hypochlorite is unstable and can decay, particularly when exposed to heat and metal ions, which could lead to erroneously high oxygen evolution reaction (OER) selectivity calculations in catalyst benchmarking experiments, resulting in poor catalyst and electrolyzer component selection. In this study, we used the rotating ring-disc electrode (RRDE) technique for the characterization of IrO2, NiO, Co3O4, RuO2, Pt/C, and PtRu electrocatalysts at near-neutral pH (8.4) in 0.5 M NaCl. The RRDE can overcome the challenge posed by thermocatalytic hypochlorite decay. IrO2 and PtRu were also studied over a range of chloride concentrations from 0.1 to 1 M. Our findings reveal that elevated temperatures (313 and 333 K) are conducive to higher OER selectivity, as the OER faradaic efficiency (FE) on IrO2 increased by 23% at 1.22 V vs SHE when the temperature was increased from 293 to 333 K. Increasing the chloride concentration from 0.1 to 1 M increased the OER current density by 40% and 200% on IrO2 and PtRu, respectively, indicating a synergistic relationship.","PeriodicalId":17364,"journal":{"name":"Journal of The Electrochemical Society","volume":"41 1","pages":""},"PeriodicalIF":3.9,"publicationDate":"2024-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142222426","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

Robust Dual-Color Electrochromism of Vanadium Oxide Nanorods Embedded on Reduced Graphene Oxide: Unraveling the Mechanism 嵌入还原氧化石墨烯的氧化钒纳米棒的稳健双色电致色性：揭示机理

IF 3.9 4区工程技术

Journal of The Electrochemical Society Pub Date : 2024-09-06 DOI: 10.1149/1945-7111/ad6e1f

Saheli Bhattacharjee, Sovandeb Sen, Susmita Kundu

{"title":"Robust Dual-Color Electrochromism of Vanadium Oxide Nanorods Embedded on Reduced Graphene Oxide: Unraveling the Mechanism","authors":"Saheli Bhattacharjee, Sovandeb Sen, Susmita Kundu","doi":"10.1149/1945-7111/ad6e1f","DOIUrl":"https://doi.org/10.1149/1945-7111/ad6e1f","url":null,"abstract":"Vanadium pentoxide (V2O5), associated with both cathodic and anodic coloration, is considered as one of the best electrochromic (EC) materials for energy-saving smart electronics. Here we present the fabrication and detailed mechanism analysis for improving the electrochromic properties of V2O5 incorporated in a reduced graphene oxide (rGO) matrix using a facile wet chemical method. The microstructural study disclosed the formation of prominent V2O5 nanorods embedded in the rGO matrix. The optimized electrochromic film resulted in coloration (tc) and bleaching time (tb) of ∼6.2 and ∼4.8 s, respectively, much faster than the color switching kinetics of the pristine V2O5 sample (tc ∼ 19.4 s, tb ∼ 15.3 s). The more dispersed structure also ensured an approximate 400% enhancement in the optical modulation of EC film and reflected a noticeable improvement in the coloration efficiency (∼347 cm2/C) of V2O5 film. Modification with rGO resulted in an outstanding improvement in the electrochemical redox stability of V2O5 up to 5000 CV cycles with minimum deterioration in the curve area. The formation of nanorod structure was the prime factor for better ion diffusion and thereby facilitating enhanced performance.","PeriodicalId":17364,"journal":{"name":"Journal of The Electrochemical Society","volume":"44 1","pages":""},"PeriodicalIF":3.9,"publicationDate":"2024-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142222458","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

Utilization of DEM Simulations to Quantify Cell Level Thickness and Volume Changes in Large Format Pouch Cells 利用 DEM 仿真量化大型袋状细胞的细胞级厚度和体积变化

IF 3.9 4区工程技术

Journal of The Electrochemical Society Pub Date : 2024-09-06 DOI: 10.1149/1945-7111/ad749e

Hunter Teel, Taylor R. Garrick, Brian J. Koch, Miguel A. Fernandez, Srikant Srinivasan, Fengkun Wang, Yangbing Zeng, Sirivatch Shimpalee

{"title":"Utilization of DEM Simulations to Quantify Cell Level Thickness and Volume Changes in Large Format Pouch Cells","authors":"Hunter Teel, Taylor R. Garrick, Brian J. Koch, Miguel A. Fernandez, Srikant Srinivasan, Fengkun Wang, Yangbing Zeng, Sirivatch Shimpalee","doi":"10.1149/1945-7111/ad749e","DOIUrl":"https://doi.org/10.1149/1945-7111/ad749e","url":null,"abstract":"In this work, a 3D representation of a lithium ion electric vehicle battery cell was created and modeled through the discrete element method (DEM) to capture the porous electrode volume change during cell operation and its effects on electrode strain, porosity changes, and pressure generation for each electrode. This was coupled with a representative volume element approach and the multi species reaction model to quantify the impact of these changes at an electrode level have on the cell level operation. Results on both the electrode level and cell level response were discussed to give insights on how the volume changes contribute to both strain and porosity changes and the potential effects these changes have on the electrochemical response of the generated representative cells. Predictions on the cell level response, particularly for porosity changes which can be difficult to capture experimentally, are essential for the further development of high energy density cells that utilize unique chemistries prone to high levels of volume change such as silicon and silicon oxides. The ability to predict the active material volume change and its nuances will be informative and essential to rapidly develop and design cells for both automotive and grid storage applications.","PeriodicalId":17364,"journal":{"name":"Journal of The Electrochemical Society","volume":"73 1","pages":""},"PeriodicalIF":3.9,"publicationDate":"2024-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142222405","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

Lithium Battery Thermal-Runaway Monitoring Based on Whole-Feature Neural Networks 基于全特征神经网络的锂电池热失控监测

IF 3.9 4区工程技术

Journal of The Electrochemical Society Pub Date : 2024-09-05 DOI: 10.1149/1945-7111/ad69c5

Zhichen Liu, Ying Li

引用次数: 0

Electrodeposition of Silicon in the Low-Temperature LiCl-KCl-CsCl-K2SiF6 Melt Under Direct and Pulse Current 低温直流和脉冲电流下 LiCl-KCl-CsCl-K2SiF6 熔体中硅的电沉积

IF 3.9 4区工程技术

Journal of The Electrochemical Society Pub Date : 2024-09-05 DOI: 10.1149/1945-7111/ad73a8

Yulia Parasotchenko, Andrey Suzdaltsev, Yuriy Zaykov

{"title":"Electrodeposition of Silicon in the Low-Temperature LiCl-KCl-CsCl-K2SiF6 Melt Under Direct and Pulse Current","authors":"Yulia Parasotchenko, Andrey Suzdaltsev, Yuriy Zaykov","doi":"10.1149/1945-7111/ad73a8","DOIUrl":"https://doi.org/10.1149/1945-7111/ad73a8","url":null,"abstract":"In this work, the effect of electrolysis modes and their parameters on the morphology of the silicon deposits on glassy carbon were studied. In direct current mode it was found that an increase in current density and deposition time changes the morphology of the silicon from a coating to a deposit with a complex surface. Scanning electron microscopy showed that silicon films produced at low current densities and a short deposition time are represented by spherical particles with a diameter of less than 1 μm. The pulse current mode made it possible to increase the cathode density of the deposition current, and the pulse current density to an average of ≈250 mA cm−2 does not lead to the formation of a large amount of dendritic deposit. It was found that a low frequency makes it possible to obtain higher-quality silicon coatings, because when the frequency increases, the coating most often does not cover the entire electrode. The high value of the duty cycle, even at low pulse current densities, always leads to the formation of dendrites. An increase in the total deposition time also leads to an increase in the amount of deposit and the formation of dendrites.","PeriodicalId":17364,"journal":{"name":"Journal of The Electrochemical Society","volume":"45 1","pages":""},"PeriodicalIF":3.9,"publicationDate":"2024-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142222409","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

Fabrication of Porous Metal Particles with Controlled Surface Structures by Barrel Anode Etching 通过桶式阳极蚀刻制造具有可控表面结构的多孔金属颗粒

IF 3.9 4区工程技术

Journal of The Electrochemical Society Pub Date : 2024-09-04 DOI: 10.1149/1945-7111/ad73a9

Takashi Yanagishita, Shota Ueno, Toshiaki Kondo, Hideki Masuda

引用次数: 0

Bimetallic MOFs-Based Electrodes for the Simultaneous Electrochemical Detection of Epinephrine and Nor-Epinephrine 基于双金属 MOFs 的电极用于同时电化学检测肾上腺素和去甲肾上腺素

IF 3.9 4区工程技术

Journal of The Electrochemical Society Pub Date : 2024-09-04 DOI: 10.1149/1945-7111/ad6c80

Charlin Soosaimanickam, Kathiresan Murugavel, Subbiah Alwarappan

{"title":"Bimetallic MOFs-Based Electrodes for the Simultaneous Electrochemical Detection of Epinephrine and Nor-Epinephrine","authors":"Charlin Soosaimanickam, Kathiresan Murugavel, Subbiah Alwarappan","doi":"10.1149/1945-7111/ad6c80","DOIUrl":"https://doi.org/10.1149/1945-7111/ad6c80","url":null,"abstract":"We designed a bi-metallic Co-Ni/BTC/4,4′-BiPy metal organic frameworks (MOFs) as an electrode material for the electrochemical detection of epinephrine and nor-epinephrine. The bi-metallic MOFs were synthesized by a solvothermal method. Following this, the bimetallic MOFs were modified with BTC and amine rich 4,4′-BiPy to improve charge transfer kinetics through non-covalent <italic toggle=\"yes\">π</italic>–<italic toggle=\"yes\">π</italic> interaction. This modified electrode was employed as a sensing platform for the simultaneous electrochemical detection of epinephrine and nor-epinephrine. The MOFs modified platform exhibited a 10–50 μM linear range with a limit of detection of 0.724 μM ± 0.128 (N = 3) and 0.815 μM ± 0.124 (N = 3), a sensitivity of 0.583 and 0.505 μA μM−1 cm−2 corresponding to epinephrine and nor-epinephrine detection. Finally, the electrochemical sensor was tested in blood and urine samples spiked with known concentrations of epinephrine and nor-epinephrine. Results confirmed the usefulness of the proposed platform for the detection of epinephrine and nor-epinephrine in clinical samples.","PeriodicalId":17364,"journal":{"name":"Journal of The Electrochemical Society","volume":"10 1","pages":""},"PeriodicalIF":3.9,"publicationDate":"2024-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142222431","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

Grand-Canonical First Principles-Based Calculations of Electrochemical Reactions 基于第一原理的电化学反应大规范计算

IF 3.9 4区工程技术

Journal of The Electrochemical Society Pub Date : 2024-09-04 DOI: 10.1149/1945-7111/ad7326

Ryosuke Jinnouchi

引用次数: 0

Flexible Ni-Foam-Based Electrode with Novel MoS2/NiO Nanocomposite for Superior Supercapacitor Applications 采用新型 MoS2/NiO 纳米复合材料的柔性镍泡沫电极可实现超级电容器的卓越应用

IF 3.9 4区工程技术

Journal of The Electrochemical Society Pub Date : 2024-09-04 DOI: 10.1149/1945-7111/ad6e1d

Divya Deep Yadav, Ajay Kumar, Ranjana Jha, Sukhvir Singh

{"title":"Flexible Ni-Foam-Based Electrode with Novel MoS2/NiO Nanocomposite for Superior Supercapacitor Applications","authors":"Divya Deep Yadav, Ajay Kumar, Ranjana Jha, Sukhvir Singh","doi":"10.1149/1945-7111/ad6e1d","DOIUrl":"https://doi.org/10.1149/1945-7111/ad6e1d","url":null,"abstract":"In the present work, a simple and effective hydrothermal method has been used to synthesize a nanocomposite of nickel oxide and molybdenum disulphide. Structural and optical characterizations of the as-synthesised MoS2/NiO nanocomposite nanoparticles were carried out using X-ray diffraction (XRD) and UV-visible spectroscopy techniques. The major peaks of MoS2 and NiO were detected in XRD, confirming the formation of a composite. The reduced band gap of 2.84 eV of MoS2/NiO nanocomposite, as compared to pure NiO with a 3.1 eV bandgap, indicates a blue shift. The surface morphology of MoS2/NiO nanocomposite was measured using field-emission scanning electron microscopy, showing a sheet-like structure with fine particles overlaid on them. Cyclic voltammetry and electrochemical impedance spectroscopy (EIS) were used to determine the processes of charge transfer between electrodes, diffusion of molecules and ions within the electrolyte solution, and ion adsorption on the surface of the the electrode. The as-prepared composite shows an enhanced specific capacitance of 246 F g−1 at20 mV sec−1, a scan rate of which was more than both base materials in pristine form. EIS results thus obtained may give a new direction for supercapacitor applications with the as-synthesized sample.","PeriodicalId":17364,"journal":{"name":"Journal of The Electrochemical Society","volume":"3 1","pages":""},"PeriodicalIF":3.9,"publicationDate":"2024-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142222407","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