International Journal of Ceramic Engineering & Science最新文献_第10页

Electronic and ionic properties of sintered cathode of LiNi0.6Mn0.2Co0.2O2 (NCM622) LiNi0.6Mn0.2Co0.2O2 (NCM622)烧结阴极的电子和离子性能

International Journal of Ceramic Engineering & Science Pub Date : 2022-07-29 DOI: 10.1002/ces2.10155

Katja Waetzig, Juliane Huettl, Dieter Goedeke, Jochen Schilm, Kristian Nikolowski, Mareike Partsch

{"title":"Electronic and ionic properties of sintered cathode of LiNi0.6Mn0.2Co0.2O2 (NCM622)","authors":"Katja Waetzig, Juliane Huettl, Dieter Goedeke, Jochen Schilm, Kristian Nikolowski, Mareike Partsch","doi":"10.1002/ces2.10155","DOIUrl":"10.1002/ces2.10155","url":null,"abstract":"Li-ion solid-state batteries have the potential for high energy densities and improved safety. Oxidic all solid-state batteries require co-sintering of the Li-ion conductive solid electrolyte, the active electrode material, and an electronic conductive additive to give a composite electrode. A first step for the realization of this complex system is the study of the sintering behavior of the active material itself as a single-phase component and to investigate the electrochemical activity as well as the electronic properties after heat treatment. In this study monolithic NCM622 cathodes with a thickness of about 90 μm were sintered at temperatures up to 900°C by using a low-melting glass as sintering additive. For these ceramic cathodes sintered at T = 800°C, an electronic conductivity of 3.0 × 10–3 S cm–1 and six orders of magnitude lower Li-ion conductivity of about 10–9 S cm–1 were determined by DC conductivity measurement. To investigate the electrochemical performance of the sintered cathode material, the porous microstructure was infiltrated with liquid electrolyte and a charging capacity of 140 mAh g–1 (92% of the theoretical capacity) was measured with C/50 cycling rate. In comparison, the electrochemical performance without infiltration of a Li-ion conductive liquid was tested with polyethylene oxide as polymeric separator. With these measurements the ability of the sintered cathode to charge/discharge as well as to provide sufficient high electronic conductivity has been demonstrated.","PeriodicalId":13948,"journal":{"name":"International Journal of Ceramic Engineering & Science","volume":"4 5","pages":"340-348"},"PeriodicalIF":0.0,"publicationDate":"2022-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ceramics.onlinelibrary.wiley.com/doi/epdf/10.1002/ces2.10155","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125370691","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Future insights on high temperature ceramics and composites for extreme environments 未来对极端环境高温陶瓷和复合材料的见解

International Journal of Ceramic Engineering & Science Pub Date : 2022-07-28 DOI: 10.1002/ces2.10156

Anthony Annerino, Mark Lawson, Pelagia-Irene Gouma

{"title":"Future insights on high temperature ceramics and composites for extreme environments","authors":"Anthony Annerino, Mark Lawson, Pelagia-Irene Gouma","doi":"10.1002/ces2.10156","DOIUrl":"10.1002/ces2.10156","url":null,"abstract":"This document summarizes key research directions as they emerged during the proceedings of the Inaugural Orton Workshop that aimed to define scientific areas of current interest to the ceramics community around the theme of: “High Temperature Ceramics and Composites for Extreme Environments.” The topic was selected due to the timely interest in such materials to meet the needs of hypersonic aviation and space exploration and habitation. Experts from funding agencies supporting ceramics research, thought-leaders from academia with expertise spanning materials processing, characterization, and modeling, as well as research and development leaders from key (aviation-related) industries, gathered to evaluate the state-of-the-art in this field and to address key questions with the intent of accelerating research and development efforts on all fronts. Highlights of the work presented and of the discussion and brainstorming sessions are provided here. It was the purpose of the organizers (The Orton Ceramic Foundation and the Orton Chair in Ceramic Engineering at OSU) to establish this event as a service to the Ceramics community in the spirit the founder of the field of Ceramic Engineering, Dr. Edward Orton Jr.","PeriodicalId":13948,"journal":{"name":"International Journal of Ceramic Engineering & Science","volume":"4 5","pages":"296-301"},"PeriodicalIF":0.0,"publicationDate":"2022-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ceramics.onlinelibrary.wiley.com/doi/epdf/10.1002/ces2.10156","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117303449","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Microstructural evolution of amorphous self-healing geopolymer composites containing alumina and glass frit 含氧化铝和玻璃熔块的非晶自愈地聚合物复合材料的微观结构演变

International Journal of Ceramic Engineering & Science Pub Date : 2022-07-23 DOI: 10.1002/ces2.10154

Patrick Keane, Rhys Jacob, Martin Belusko, Waltraud M. Kriven, Nikki Stanford, Frank Bruno

{"title":"Microstructural evolution of amorphous self-healing geopolymer composites containing alumina and glass frit","authors":"Patrick Keane, Rhys Jacob, Martin Belusko, Waltraud M. Kriven, Nikki Stanford, Frank Bruno","doi":"10.1002/ces2.10154","DOIUrl":"10.1002/ces2.10154","url":null,"abstract":"Geopolymer refers to a large group of nanoporous, nanoparticulate materials that are synthesized by dissolution and polycondensation of aluminosilicates in basic solutions and can be made from a variety of starting materials, such as industrial waste ash, volcanic rock, or calcined clay. Geopolymers are X-ray amorphous, corrosion resistant, refractory, and made at ambient temperature and pressure similar to cements. In this study, potassium metakaolin-based geopolymer (KGP) composites containing alumina platelets and glass frit were fabricated, and the impact of heating temperature, dwell time, and heating/cooling rate on the microstructure was studied. The composites, heat treated up to 900°C for up to 20 h using heating/cooling rates of up to 1°C/min, showed that the addition of alumina platelets prevented major microcracking and was also able to reduce linear shrinkage. Glass frit has been shown to heal microcracks formed during KGP dehydration and crystallization. The resulting material had an open porosity of less than 1% and a uniform surface glaze of 250 μm thickness, while Oswald ripening of round closed pores occurred due to the migration of molten glass in the system.","PeriodicalId":13948,"journal":{"name":"International Journal of Ceramic Engineering & Science","volume":"4 5","pages":"327-339"},"PeriodicalIF":0.0,"publicationDate":"2022-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ceramics.onlinelibrary.wiley.com/doi/epdf/10.1002/ces2.10154","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127987243","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

Thermodynamic stabilization of crystalline silicon carbide polymer-derived ceramic fibers 晶体碳化硅聚合物衍生陶瓷纤维的热力学稳定性

International Journal of Ceramic Engineering & Science Pub Date : 2022-06-25 DOI: 10.1002/ces2.10153

Gerson J. Leonel, Shakir Bin Mujib, Gurpreet Singh, Alexandra Navrotsky

{"title":"Thermodynamic stabilization of crystalline silicon carbide polymer-derived ceramic fibers","authors":"Gerson J. Leonel, Shakir Bin Mujib, Gurpreet Singh, Alexandra Navrotsky","doi":"10.1002/ces2.10153","DOIUrl":"10.1002/ces2.10153","url":null,"abstract":"Three crystalline SiC fibers were studied: Tyranno, Hi-Nicalon, and Sylramic. Thermodynamic stability of the SiC fibers was determined by high temperature oxide melt solution calorimetry. Results shed light on the thermodynamic penalty or benefit associated with microstructural modification of the ceramic fibers, and how energetics correlate to mechanical properties. Enthalpies of formation from components (SiC, SiO2, Si3N4, and C, ∆H°f,comp) for Tyranno, Hi-Nicalon, and Sylramic are −12.05 ± 8.71, −58.75 ± 6.93, and −71.10 ± 8.71 kJ/mol Si, respectively. The microstructure in Sylramic offers the greatest stabilizing effect, thus resulting in its much more exothermic enthalpy of formation relative to elements and crystalline components. In contrast, the microstructure in Tyranno offers the least stabilization. The thermodynamic stability of the fibers increases with increasing mixed bonding (Si bonded to both C and O). From mechanical testing, Young's moduli of Tyranno, Hi-Nicalon, and Sylramic are 112, 205, and 215 GPa, respectively. Greater thermodynamic stability is correlated with a higher Young's modulus.","PeriodicalId":13948,"journal":{"name":"International Journal of Ceramic Engineering & Science","volume":"4 5","pages":"315-326"},"PeriodicalIF":0.0,"publicationDate":"2022-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ceramics.onlinelibrary.wiley.com/doi/epdf/10.1002/ces2.10153","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114298196","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Correction to “Effects of temperature and humidity on adhesion of water scale to glass substrates” 对“温度和湿度对水垢粘附在玻璃基板上的影响”的修正

International Journal of Ceramic Engineering & Science Pub Date : 2022-06-24 DOI: 10.1002/ces2.10152

引用次数: 0

Preferred orientation in polycrystalline colossal electroresistive hollandite PbFexV6-xO11 多晶巨型电阻荷兰石pbexv6 - xo11的择优取向

International Journal of Ceramic Engineering & Science Pub Date : 2022-06-18 DOI: 10.1002/ces2.10151

Shuvajit Halder, Sugata Ray

引用次数: 0

60 years of dislocations in ceramics: A conceptual framework for dislocation mechanics in ceramics 陶瓷位错的60年:陶瓷位错力学的概念框架

International Journal of Ceramic Engineering & Science Pub Date : 2022-06-06 DOI: 10.1002/ces2.10150

Lukas Porz

{"title":"60 years of dislocations in ceramics: A conceptual framework for dislocation mechanics in ceramics","authors":"Lukas Porz","doi":"10.1002/ces2.10150","DOIUrl":"10.1002/ces2.10150","url":null,"abstract":"High-tech ceramics are typically engineered by controlling point defects and interfaces while one-dimensional dislocations have found much less attention so far. Nevertheless, their impact on almost any functional property and the sudden ease to fabricate them with novel synthesis methods, such as rapid densification, brings spotlight attention to dislocations as design dimension. Although the typical brittleness of ceramics insinuates the irrelevance of dislocations for mechanical behavior, abundant literature is spread over materials, decades, and disciplines, however, often unconnected. Here, a conceptual framework for dislocation mechanics in ceramics separated into five logical aspects, (1) fundamental mobility, (2) obstacles to motion, (3) limitation by necessity of nucleation, (4) motion complexity, and (5) avoidance of competing mechanisms, brings oversight into the complex behavior. In consequence, quicker identification of the limiting step allows to estimate the potential involved more precisely and to identify open research questions with greater ease. An introduction to dislocations and the functionality involved, a look back over the last six decades, and highlights of open question are dedicated to provide a framework and bridge the gap between the attached research fields.","PeriodicalId":13948,"journal":{"name":"International Journal of Ceramic Engineering & Science","volume":"4 4","pages":"214-239"},"PeriodicalIF":0.0,"publicationDate":"2022-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ceramics.onlinelibrary.wiley.com/doi/epdf/10.1002/ces2.10150","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115515340","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Thermal conductivity of salvaged fused cast alumina used in the glass industry 玻璃工业用电熔铸造氧化铝的热导率

International Journal of Ceramic Engineering & Science Pub Date : 2022-05-21 DOI: 10.1002/ces2.10137

Hsin Wang, James G. Hemrick

{"title":"Thermal conductivity of salvaged fused cast alumina used in the glass industry","authors":"Hsin Wang, James G. Hemrick","doi":"10.1002/ces2.10137","DOIUrl":"10.1002/ces2.10137","url":null,"abstract":"Fused cast alumina (FCA) has been and continues to be used as a refractory material in energy intensive industries such as glass melting and chemical processing. In-service degradation due to high temperature exposure in harsh environment affects the designed furnace thermal profiles and energy consumption. Phase transformation may occur at the refractory hot face during glass melting altering the properties. Three FCA blocks recovered from industrial furnaces were investigated in this study. The as-received FCA consists primarily of a mixture of alpha (α) and beta (β) alumina that has a thermal conductivity value of 5–6 W/mK. The Hot Disk method was used to obtain thermal conductivity directly on the refractory blocks. At the hot face, a transformation from β to α alumina occurred and was confirmed by an X-ray diffraction study. Thermal conductivity measurements as a function of position also showed a clear transition from β to α alumina at both ends of a complete block with no voids. Thermal conductivity of the α alumina tripled compared to β alumina. This study provides important information of heat transfer and thermal conductivity evolution to refractory manufacturers and users.","PeriodicalId":13948,"journal":{"name":"International Journal of Ceramic Engineering & Science","volume":"4 4","pages":"286-291"},"PeriodicalIF":0.0,"publicationDate":"2022-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ceramics.onlinelibrary.wiley.com/doi/epdf/10.1002/ces2.10137","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125543968","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Alternative resource of incineration bottom ash for ceramic tile production 焚烧底灰在瓷砖生产中的替代资源

International Journal of Ceramic Engineering & Science Pub Date : 2022-05-21 DOI: 10.1002/ces2.10136

Elsabet Hunachew Dagnew

引用次数: 0

Distortion prediction during sintering using Monte Carlo method implemented with virtual springs 用虚拟弹簧实现的蒙特卡罗方法预测烧结变形

International Journal of Ceramic Engineering & Science Pub Date : 2022-05-11 DOI: 10.1002/ces2.10135

Tetsushi Matsuda

引用次数: 2