ECS Advances最新文献

Electrochemical Oxidation of Ethanol and Methanol at Rh@Pt Catalysts at 80°C in Proton Exchange Membrane (PEM) Cells 质子交换膜 (PEM) 电池中 Rh@Pt 催化剂在 80°C 下的乙醇和甲醇电化学氧化作用

ECS Advances Pub Date : 2024-07-03 DOI: 10.1149/2754-2734/ad5e9a

A.H. Ali, Peter Pickup

{"title":"Electrochemical Oxidation of Ethanol and Methanol at Rh@Pt Catalysts at 80°C in Proton Exchange Membrane (PEM) Cells","authors":"A.H. Ali, Peter Pickup","doi":"10.1149/2754-2734/ad5e9a","DOIUrl":"https://doi.org/10.1149/2754-2734/ad5e9a","url":null,"abstract":"\u0000 Efficient oxidation of ethanol to carbon dioxide is crucial for the development of sustainable electrochemical generation of power and hydrogen from bioethanol. However, high anode overpotentials and partial oxidation to acetaldehyde and acetic acid result in low efficiencies and waste management issues. Bimetallic Rh-Pt catalysts have shown enhanced activities and CO2 production in aqueous electrolytes, but not in proton exchange membrane (PEM) cells. In this work Rh@Pt core-shell catalysts, prepared from commercial carbon-supported Rh, have been evaluated in both aqueous H2SO4 and PEM cells. Cyclic voltammetry of aqueous methanol and ethanol has shown that the catalytic activity of the Pt shell is increased by the compressive strain induced by the Rh core, and that there is also a significant bifunctional effect at low Pt coverages. In PEM cells, these effects also increase selectivity for cleavage of the C-C bond of ethanol to produce CO2, which will enhance the efficiencies of ethanol fuel and electrolysis cells for producing power and hydrogen, respectively. Deposition of 0.5 monolayers of Pt onto the Rh core produced the highest CO2 yields at the lowest anode overpotentials, while higher coverages of Pt increased performances and CO2 yields at higher potentials.","PeriodicalId":338397,"journal":{"name":"ECS Advances","volume":"17 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141681551","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

Revealing and Overcoming Unfavorable Electrochemical Behaviors of Thick LiNbO3-Coated NCM523 for All-Solid-State Lithium Batteries 揭示并克服厚铌酸锂涂层 NCM523 在全固态锂电池中的不利电化学行为

ECS Advances Pub Date : 2024-05-14 DOI: 10.1149/2754-2734/ad4b40

W. Bong, Koji Kawamoto

{"title":"Revealing and Overcoming Unfavorable Electrochemical Behaviors of Thick LiNbO3-Coated NCM523 for All-Solid-State Lithium Batteries","authors":"W. Bong, Koji Kawamoto","doi":"10.1149/2754-2734/ad4b40","DOIUrl":"https://doi.org/10.1149/2754-2734/ad4b40","url":null,"abstract":"\u0000 All-solid-state batteries (ASSBs) are very promising for next-generation energy storage technologies owing to several key advantages including higher power density, better thermal and electrochemical stability, and improved safety for electric vehicles. In this work, bulk-type ASSB cells were prepared with 0–25 nm thick LiNbO3 coatings, and their electrochemical behaviors at different upper cutoff voltages (upper cutoff potential ≥ 4.40 V) were systematically compared. A thicker coating caused three unfavorable electrochemical behaviors in the first three cycles: (1) a higher overpotential, (2) sluggish discharge kinetics, and (3) capacity fading. The measured electronic conductivity decreased drastically with increasing coating thickness, suggesting that this may have caused behaviors (1–3). To overcome this, a carbon additive was used to improve electronic transport in the composite cathode and successfully suppressed the aforementioned behaviors. Our findings indicate that the combination of a thick LiNbO3 coating on NCM523 and carbon additive can achieve synergistic effects to improve both the electrochemical properties and durability of ASSB cells.","PeriodicalId":338397,"journal":{"name":"ECS Advances","volume":"39 10","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140981095","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

Optimizing Direct Air Capture Solvents to Minimize Energy Consumption of CO2 Release in a Carbonate Electrolyzer 优化直接空气捕集溶剂，最大限度减少碳酸盐电解槽中二氧化碳释放的能耗

ECS Advances Pub Date : 2024-03-29 DOI: 10.1149/2754-2734/ad3928

Xin Gao, A. Omosebi, Aron Patrick, Kunlei Liu

引用次数: 0

Stabilization of Ni-YSZ Anodes in Solid Oxide Fuel Cells using an ALD-Grown Aluminum Titanate Interlayer 使用 ALD 生长的钛酸铝中间膜稳定固体氧化物燃料电池中的 Ni-YSZ 阳极

ECS Advances Pub Date : 2024-03-28 DOI: 10.1149/2754-2734/ad38cd

Zhuoming Feng, Katherine Elizabeth Hansen, H. Bhandari, John Vohs

引用次数: 0

Multiwalled-Carbon-Nanotube-Modified Li2ZnTi3O8 as Anode with Improved Cycling Stability and Rate Capability for Lithium-Ion Batteries 多壁碳纳米管改性 Li2ZnTi3O8 作为锂离子电池负极可提高循环稳定性和速率能力

ECS Advances Pub Date : 2024-03-25 DOI: 10.1149/2754-2734/ad3769

Süleyman Yıldız, H. Şahan, Ferhat Şanlı, Ş. Patat

{"title":"Multiwalled-Carbon-Nanotube-Modified Li2ZnTi3O8 as Anode with Improved Cycling Stability and Rate Capability for Lithium-Ion Batteries","authors":"Süleyman Yıldız, H. Şahan, Ferhat Şanlı, Ş. Patat","doi":"10.1149/2754-2734/ad3769","DOIUrl":"https://doi.org/10.1149/2754-2734/ad3769","url":null,"abstract":"\u0000 Due to its better electronic conductivity and larger lithium intercalation capacity, a multiwalled-carbon-nanotube (MWCNT)-modified Li2ZnTi3O8 (LZTO) has significant potential for use as an anode material for Li-ion batteries. The rapid and affordable ball-mill-aided solid state approach is used to synthesize LZTO with MWCNT-modified Li2ZnTi3O8 (LZTO@MWCNTs). Electrochemical performance tests of the anode material were carried out using cyclic voltammetry (CV), galvanostatic charge-discharge measurement, and electrochemical impedance spectroscopy (EIS). CV showed that LZTO@MWCNT electrode has lower Δϕp (0.184 V) than that of the LZTO electrode (0.211 V) and LZTO@MWCNT electrode has better electrochemical reversibility than that of pristine electrode after five cycles utilizing the same procedure. LZTO@ MWCNTs anode material has a higher charge-discharge capacity than LZTO anode material at 0.1–5C rates. After 100 cycles, the initial discharge capacities of LZTO@MWCNT electrode are 227 and 142 mAh g-1 at the 1C-5C rate, respectively, whereas the initial discharge capacities of LZTO electrode are only144 and 28 mAh g-1 in the same condition. The charge transfer and solid electrolyte interphase resistance of LZTO and LZTO@MWCNTs anodes are, respectively, 19.31, 62.74, and 7.93, 12.06 after 30 cycles at 1C, according to the EIS data.","PeriodicalId":338397,"journal":{"name":"ECS Advances","volume":" 42","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140383620","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

Thermal-based Zinc-Oxide-Coated Smart Fabric for Thermochromic Applications 用于热致变色应用的热基氧化锌涂层智能织物

ECS Advances Pub Date : 2024-02-23 DOI: 10.1149/2754-2734/ad2cab

Mohammed Jabir, P. G. Gopinath, Suhasini S, J. Kaliappan, Pandiyarasan Veluswamy

{"title":"Thermal-based Zinc-Oxide-Coated Smart Fabric for Thermochromic Applications","authors":"Mohammed Jabir, P. G. Gopinath, Suhasini S, J. Kaliappan, Pandiyarasan Veluswamy","doi":"10.1149/2754-2734/ad2cab","DOIUrl":"https://doi.org/10.1149/2754-2734/ad2cab","url":null,"abstract":"\u0000 The present study focuses on developing a thermochromic device with a flexible substrate through the coating of cotton fabric with ZnO (Zinc oxide) by solvothermal synthesis technique. Here, ZnO was used as the thermochromic layer for the fabrication work, and it is suitable for textile and wearable applications as it is non-toxic to human skin. This device was designed and fabricated in order to gain better insight into the role of ZnO in thermochromic applications. 3D nanostructures of ZnO were grown on the surface of cotton fabric using a simple and cost-effective solvothermal synthesis approach. The coated fabrics were investigated to determine their structure, morphology, composition, electrical, optical and emissivity properties using an X-Ray diffraction, field-emission scanning electron microscope, current-voltage characteristics, ultraviolet protection factor, etc. From the morphology study, uniformly-packed ZnO nanorods with growth in the c-axis direction are observed. The ZnO nanostructures are known to have excellent UPF when exposed to solar radiation and showed UPF value of 112.48. Moreover, based on the emissivity analysis coated ZnO cotton fabric showed the emissivity of 0.95, which is higher and has greater radiation protection than that of bare cotton fabric.","PeriodicalId":338397,"journal":{"name":"ECS Advances","volume":"13 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140435829","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

In-situ Crosslinked Gel Polymer Electrolytes Based on Ionic Monomers as Charge Carriers for Lithium-Ion Batteries 基于离子单体的原位交联凝胶聚合物电解质作为锂离子电池的电荷载体

ECS Advances Pub Date : 2024-02-22 DOI: 10.1149/2754-2734/ad2c20

Peng He, Sam Chen, Yun Young Choi, N. Myung, Jacob R. Nykaza, J. Schaefer

{"title":"In-situ Crosslinked Gel Polymer Electrolytes Based on Ionic Monomers as Charge Carriers for Lithium-Ion Batteries","authors":"Peng He, Sam Chen, Yun Young Choi, N. Myung, Jacob R. Nykaza, J. Schaefer","doi":"10.1149/2754-2734/ad2c20","DOIUrl":"https://doi.org/10.1149/2754-2734/ad2c20","url":null,"abstract":"\u0000 In-situ polymerization is a method for fabricating lithium-ion batteries to contain solid or gel electrolytes without major manufacturing changes. Gel polymer electrolytes (GPEs) wherein some polymer in incorporated, decreasing the volume of liquid electrolyte, have been pursued as they may be safer. One challenge with GPEs is reduced ion transport properties. In this work, macromonomers with different chain chemistry and ionic monomers are crosslinked on electrospun polyvinylidene difluoride (PVDF) in the presence of solvents, without conventional salt, to in-situ fabricate GPEs with elevated transference number within coin cells. These GPEs would be single-ion conductors in the case of complete ionic monomer polymerization to the crosslinked network. The effect of chain chemistry and the percentage of macromonomers and ionic monomers in the GPEs on conductivity are investigated. It is found that poly(siloxane) diacrylate (PDMSDA)- and perfluoropolyether tetra-acrylate (PFPETA)-based GPEs outperform the poly(propylene glycol) diacrylate (PPGDA)- and poly(tetrahydrofuran) diacrylate (PTHFDA)-based GPEs in terms of ionic conductivity. The highest ionic conductivity was achieved for a PDMSDA-based GPE at 4.2 × 10-4 S/cm at 23°C. Graphite/NMC-811 full cells prepared with the in-situ polymerized PDMSDA-based GPEs show capacity retention of 82.6% after 100 cycles, albeit with limited electrode utilization due to ion transport limitations.","PeriodicalId":338397,"journal":{"name":"ECS Advances","volume":"15 11","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140440682","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

Microwave assisted synthesis of PtxRu1-x-NiTiO3: A Novel Hybrid Nanostructured Electrocatalyst for Direct Methanol Oxidation 微波辅助合成 PtxRu1-x-NiTiO3：用于直接甲醇氧化的新型混合纳米结构电催化剂

ECS Advances Pub Date : 2024-02-20 DOI: 10.1149/2754-2734/ad2af8

Chellasamy V, T. Paramasivam

{"title":"Microwave assisted synthesis of PtxRu1-x-NiTiO3: A Novel Hybrid Nanostructured Electrocatalyst for Direct Methanol Oxidation","authors":"Chellasamy V, T. Paramasivam","doi":"10.1149/2754-2734/ad2af8","DOIUrl":"https://doi.org/10.1149/2754-2734/ad2af8","url":null,"abstract":"\u0000 We have explored the preparation of PtxRu1-x-NiTiO3 hybrid electrocatalysts for the application of methanol oxidization. The X-ray diffraction (XRD) and Raman analysis of PtxRu1-x-NiTiO3 confirmed the rhombohedral crystal structure of NiTiO3 and cubic-structured Pt(Ru) nanoparticles. Transmission electron microscopy (TEM) analysis signifies that Pt(Ru) nanoparticles is decorated on the surface of the NiTiO3. The mean size of the Pt(Ru) nanoparticles calculated from the TEM profile is around 2 nm which corroborates with crystallite size estimated from XRD. X-ray photoelectron spectroscopy analysis confirms the presence of metallic Pt along with its oxidized components (Pt2+ and Pt4+). The cyclic voltammetry analysis evidence that Pt0.5Ru0.5-NiTiO3 has shown better activity in methanol oxidation compared with the other compositions of PtxRu1-x-NiTiO3 along with the maximum current density of 65.41 mA/cm2 with less carbon poisoning. Chronoamperometry and polarization studies represent the stability and electrochemical activity of the Pt0.5Ru0.5-NiTiO3 electrocatalysts towards methanol oxidation. Based on the research carried out in this work, it is concluded that PtxRu1-x-NiTiO3 would be a promising candidate as an electrocatalyst for methanol oxidation in direct methanol fuel cells.","PeriodicalId":338397,"journal":{"name":"ECS Advances","volume":"394 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140446968","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

Potential Use of Waste in Electrocatalysis Using Foundry Sand as Electrocatalyst for the Hydrogen Evolution Reaction 废物在电催化中的潜在用途使用铸造砂作为氢气进化反应的电催化剂

ECS Advances Pub Date : 2024-02-20 DOI: 10.1149/2754-2734/ad2af9

C. Xavier, Galo Ramirez, Mauricio Isaacs Casanova, Caue Ribeiro, E. Azevedo, R. D. del Río

引用次数: 0

Three – Dimensionally Ordered Macroporous Amorphous C/TiO2 Composite Electrodes for Lithium-ion Batteries 用于锂离子电池的三维有序大孔非晶 C/TiO2 复合电极

ECS Advances Pub Date : 2024-01-31 DOI: 10.1149/2754-2734/ad248e

Aoife Carroll, A. Grant, Yan Zhang, U. Gulzar, Syed Abdul Ahad, H. Geaney, Colm O'Dwyer

引用次数: 0