ECS advances最新文献_第2页

Comparative Thermal Insulation Nature of Ca2FeMnO6-δ and Sr2FeMnO6-δ Ca2FeMnO6-δ 和 Sr2FeMnO6-δ 的隔热性能比较

ECS advances Pub Date : 2024-02-09 DOI: 10.1149/2754-2734/ad27dc

Ram Krishna Hona, Ebony Schultz, Mandy Guinn, Alexa D. Azure

{"title":"Comparative Thermal Insulation Nature of Ca2FeMnO6-δ and Sr2FeMnO6-δ","authors":"Ram Krishna Hona, Ebony Schultz, Mandy Guinn, Alexa D. Azure","doi":"10.1149/2754-2734/ad27dc","DOIUrl":"https://doi.org/10.1149/2754-2734/ad27dc","url":null,"abstract":"\u0000 We investigated the utility of Ca2FeMnO6-δ and Sr2FeMnO6-δ as materials with low thermal conductivity, finding potential applications in thermoelectrics, electronics, solar devices, and gas turbines for land and aerospace use. These compounds, characterized as oxygen-deficient perovskites, feature distinct vacancy arrangements. Ca2FeMnO6-δ adopts a brownmillerite-type orthorhombic structure with ordered vacancy arrangement, while Sr2FeMnO6-δ adopts a perovskite cubic structure with disordered vacancy distribution. Notably, both compounds exhibit remarkably low thermal conductivity, measuring below 0.50 Wm-1K-1. This places them among the materials with the lowest thermal conductivity reported for perovskites. The observed low thermal conductivity is attributed to oxygen vacancies and phonon scattering. Interestingly as scanning electron microscopy images show the smaller grain size, our findings suggest that the creation of vacancies and lowering the grain size or increasing the grain boundaries play a crucial role in achieving such low thermal conductivity values. This characteristic enhances the potential of these materials for applications where efficient heat dissipation, safety, and equipment longevity are paramount.","PeriodicalId":489350,"journal":{"name":"ECS advances","volume":" 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139788646","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

Evaluation of Anode Water Electrolyzed with Anion Exchange Membrane for Cleaning EUV Semiconductor 评估用阴离子交换膜电解清洗 EUV 半导体的阳极水

ECS advances Pub Date : 2023-12-05 DOI: 10.1149/2754-2734/ad1270

Hyungwon Kim, Sungmin Lim, K. Ryoo, Insik Choi, B. Choi, Jaeyoung Kim, Younwon Jung

{"title":"Evaluation of Anode Water Electrolyzed with Anion Exchange Membrane for Cleaning EUV Semiconductor","authors":"Hyungwon Kim, Sungmin Lim, K. Ryoo, Insik Choi, B. Choi, Jaeyoung Kim, Younwon Jung","doi":"10.1149/2754-2734/ad1270","DOIUrl":"https://doi.org/10.1149/2754-2734/ad1270","url":null,"abstract":"\u0000 Electrically nonconducting UPW was electrolyzed without electrolyte through an anion exchange membrane for evaluating applicability to EUV semiconductor cleaning. The anode water produced held positive ORP up to 900 mV, which is very oxidative. ORP, pH, and conductivity measurements were complementary for understanding anode water. Correlation of concurrent ORP decrease and conductivity increase in ultra-pure anode water domain was observed first the time. The oxidative OHo was formed as the major species in anode water, causing positive ORP during ORP measurement. H+ and OH− ions, and OHo radical co-existed in anode water at amphoteric non-equilibrium, while pH was less than 6. It was concluded that OHo, as a strong oxidant, transformed itself to OH− by ORP measurement. OHo radical would oxidize selectively and then remove nano-contaminants. Anode water is considered to fulfill the requirement of EUV semiconductor cleaning where no oxygen species should be required because of likely oxide layer formation during cleaning, and it will even remove the native oxide developed unintentionally before cleaning.","PeriodicalId":489350,"journal":{"name":"ECS advances","volume":"80 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138597970","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

Enhancing Dye Degradation Property of MoO3 Nanoplates by Vanadium Doping 通过掺钒增强 MoO3 纳米板的染料降解性能

ECS advances Pub Date : 2023-12-04 DOI: 10.1149/2754-2734/ad120d

V. Jain, Y.N. Doshi, Mona Shah, Jaymin Ray, Abhitosh kedia, Dimple V Shah, Kinjal Patel

引用次数: 0

3D Printed Rechargeable Aqueous and Non-Aqueous Lithium-Ion Batteries: Evolution of Design and Performance 三维打印可充电水性和非水性锂离子电池：设计与性能的演变

ECS advances Pub Date : 2023-12-04 DOI: 10.1149/2754-2734/ad120c

Vladimir Egorov, U. Gulzar, C. O’Dwyer

{"title":"3D Printed Rechargeable Aqueous and Non-Aqueous Lithium-Ion Batteries: Evolution of Design and Performance","authors":"Vladimir Egorov, U. Gulzar, C. O’Dwyer","doi":"10.1149/2754-2734/ad120c","DOIUrl":"https://doi.org/10.1149/2754-2734/ad120c","url":null,"abstract":"Here we describe the modeling and design evolution of vat polimerized (Vat-P) stereolithographic apparatus (SLA) 3D printed coin cell-type aqueous and non-aqueous rechargeable lithium-ion batteries, cases and current collectors. We detail the rationale for design evolution that improved performance, handling and assembly of the printed batteries. Some guidance into the modeling, 3D printing process, material choice, chemical and electrochemical stability, assembly, sealing, and performance of 3D printed Li-ion batteries is outlined. 3D printed Li-ion batteries demonstrated promising results in terms of gravimetric capacity, rate capability, and capacity per unit footprint area compared to conventional coin cells in both aqueous and non-aqueous systems. For aqueous cells, the cell level capacity is a factor of 2–3x higher than similar metal coin cells due to the lighter weight and better rate response. We also outline design requirements for a Vat-P printed battery that are compatible with organic carbonate-based electrolytes, where the cell provides 115 mAh g−1 specific capacity using an LiCoO2–graphite chemistry, which is only ∼20% less than the maximum reversible capacity of LCO. Despite the challenges faced in optimizing the design and materials for 3D printed Li-ion batteries, this study provides valuable information for future research and development.","PeriodicalId":489350,"journal":{"name":"ECS advances","volume":"4 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138601303","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

Investigating the Physical State of Polymer Electrolyte: Influence of Temperature and LiTFSI Concentration on the Phase of the Different States of the Polymer Electrolyte PEO-LiTFSI 研究聚合物电解质的物理状态：温度和 LiTFSI 浓度对聚合物电解质 PEO-LiTFSI 不同状态相位的影响

ECS advances Pub Date : 2023-12-02 DOI: 10.1149/2754-2734/ad119d

Sanatou Toe, Jean-Christophe Remigy, Lucie Leveau, F. Chauvet, Youcef Kerdja, Theodore Tzedakis

{"title":"Investigating the Physical State of Polymer Electrolyte: Influence of Temperature and LiTFSI Concentration on the Phase of the Different States of the Polymer Electrolyte PEO-LiTFSI","authors":"Sanatou Toe, Jean-Christophe Remigy, Lucie Leveau, F. Chauvet, Youcef Kerdja, Theodore Tzedakis","doi":"10.1149/2754-2734/ad119d","DOIUrl":"https://doi.org/10.1149/2754-2734/ad119d","url":null,"abstract":"\u0000 A critical analysis of the physical state {solid or liquid state} of the PEO-LiTFSI system was investigated in this study. The findings show one crystallite type in PEO and four in LiTFSI. The physical state of the binary mixture PEO-LiTFSI is predominate by the semi-crystalline properties of pure PEO when we is lower than 33 wt.%, and the crystallization of the mixture is only induced by PEO. Nevertheless, LiTFSI reduces the degree of crystallinity of PEO due to its solvation by a part of PEO crystallites. Besides, as the solubility limit of LiTFSI in PEO is achieved, salt crystallites appear within the resulting electrolyte. These crystallites in the high we domain were identified as LiTFSI crystallites complexed with PEO. However, rising temperature promotes their dissolution. The functional groups implicated in the crystallization of PEO-LiTFSI have been highlighted using the IR technique. Besides, the experimental result shows that the glass transition temperature (Tg) and the melting point (Tm) of the binary mixture exhibit a non-linear trend with we and Mw. A simple mathematical treatment is proposed to predict glass transition temperature as a function of we and Mw. Our model considers the additive effect of lithium salt on the Tg variation.","PeriodicalId":489350,"journal":{"name":"ECS advances","volume":"22 7","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138606810","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