{"title":"锂离子阴极粉末生产中提高sagar寿命的材料","authors":"Katja Waetzig, Thomas Hutzler, Eveline Zschippang","doi":"10.1111/ijac.14897","DOIUrl":null,"url":null,"abstract":"<p>Ceramic saggars of mullite-cordierite are currently used to produce cathode powders for lithium-ion batteries. Strong interactions occur between the LiNi<sub>0.8</sub>Mn<sub>0.1</sub>Co<sub>0.1</sub>O<sub>2</sub> (NMC) precursor in the temperature range of calcination (750–1000°C) leading to corrosion and formation of cracks in the saggar. The frequent failure of saggar causes a lot of waste, which could be reduced by choosing corrosion-resistant materials. To understand the corrosion mechanism in the system MgO–Al<sub>2</sub>O<sub>3</sub>–SiO<sub>2</sub>, the materials MgO, Al<sub>2</sub>O<sub>3</sub>, MgAl<sub>2</sub>O<sub>4</sub>, and SiC (instead of SiO<sub>2</sub>) were embedded in premixed NMC precursor and calcined at <i>T</i> = 780°C for 50, 100, 150 and 200 h. The formed phases were determined by phase and microstructure analysis. Finally, the formation of LiAlO<sub>2</sub> and Li<sub>5</sub>AlO<sub>4</sub> is associated with a lower growth rate of the corrosion layer compared with Li<sub>4</sub>SiO<sub>4</sub>, while MgO is inert. The reactivity with NMC can be ordered as follows: SiO<sub>2</sub> > Al<sub>2</sub>O<sub>3</sub> > MgO.</p>","PeriodicalId":13903,"journal":{"name":"International Journal of Applied Ceramic Technology","volume":"22 1","pages":""},"PeriodicalIF":1.8000,"publicationDate":"2024-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/ijac.14897","citationCount":"0","resultStr":"{\"title\":\"Materials for improved lifetime of saggar in production of Li-ion cathode powders\",\"authors\":\"Katja Waetzig, Thomas Hutzler, Eveline Zschippang\",\"doi\":\"10.1111/ijac.14897\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>Ceramic saggars of mullite-cordierite are currently used to produce cathode powders for lithium-ion batteries. Strong interactions occur between the LiNi<sub>0.8</sub>Mn<sub>0.1</sub>Co<sub>0.1</sub>O<sub>2</sub> (NMC) precursor in the temperature range of calcination (750–1000°C) leading to corrosion and formation of cracks in the saggar. The frequent failure of saggar causes a lot of waste, which could be reduced by choosing corrosion-resistant materials. To understand the corrosion mechanism in the system MgO–Al<sub>2</sub>O<sub>3</sub>–SiO<sub>2</sub>, the materials MgO, Al<sub>2</sub>O<sub>3</sub>, MgAl<sub>2</sub>O<sub>4</sub>, and SiC (instead of SiO<sub>2</sub>) were embedded in premixed NMC precursor and calcined at <i>T</i> = 780°C for 50, 100, 150 and 200 h. The formed phases were determined by phase and microstructure analysis. Finally, the formation of LiAlO<sub>2</sub> and Li<sub>5</sub>AlO<sub>4</sub> is associated with a lower growth rate of the corrosion layer compared with Li<sub>4</sub>SiO<sub>4</sub>, while MgO is inert. The reactivity with NMC can be ordered as follows: SiO<sub>2</sub> > Al<sub>2</sub>O<sub>3</sub> > MgO.</p>\",\"PeriodicalId\":13903,\"journal\":{\"name\":\"International Journal of Applied Ceramic Technology\",\"volume\":\"22 1\",\"pages\":\"\"},\"PeriodicalIF\":1.8000,\"publicationDate\":\"2024-08-19\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://onlinelibrary.wiley.com/doi/epdf/10.1111/ijac.14897\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"International Journal of Applied Ceramic Technology\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://onlinelibrary.wiley.com/doi/10.1111/ijac.14897\",\"RegionNum\":4,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"MATERIALS SCIENCE, CERAMICS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"International Journal of Applied Ceramic Technology","FirstCategoryId":"88","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1111/ijac.14897","RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"MATERIALS SCIENCE, CERAMICS","Score":null,"Total":0}
Materials for improved lifetime of saggar in production of Li-ion cathode powders
Ceramic saggars of mullite-cordierite are currently used to produce cathode powders for lithium-ion batteries. Strong interactions occur between the LiNi0.8Mn0.1Co0.1O2 (NMC) precursor in the temperature range of calcination (750–1000°C) leading to corrosion and formation of cracks in the saggar. The frequent failure of saggar causes a lot of waste, which could be reduced by choosing corrosion-resistant materials. To understand the corrosion mechanism in the system MgO–Al2O3–SiO2, the materials MgO, Al2O3, MgAl2O4, and SiC (instead of SiO2) were embedded in premixed NMC precursor and calcined at T = 780°C for 50, 100, 150 and 200 h. The formed phases were determined by phase and microstructure analysis. Finally, the formation of LiAlO2 and Li5AlO4 is associated with a lower growth rate of the corrosion layer compared with Li4SiO4, while MgO is inert. The reactivity with NMC can be ordered as follows: SiO2 > Al2O3 > MgO.
期刊介绍：
The International Journal of Applied Ceramic Technology publishes cutting edge applied research and development work focused on commercialization of engineered ceramics, products and processes. The publication also explores the barriers to commercialization, design and testing, environmental health issues, international standardization activities, databases, and cost models. Designed to get high quality information to end-users quickly, the peer process is led by an editorial board of experts from industry, government, and universities. Each issue focuses on a high-interest, high-impact topic plus includes a range of papers detailing applications of ceramics. Papers on all aspects of applied ceramics are welcome including those in the following areas:
Nanotechnology applications;
Ceramic Armor;
Ceramic and Technology for Energy Applications (e.g., Fuel Cells, Batteries, Solar, Thermoelectric, and HT Superconductors);
Ceramic Matrix Composites;
Functional Materials;
Thermal and Environmental Barrier Coatings;
Bioceramic Applications;
Green Manufacturing;
Ceramic Processing;
Glass Technology;
Fiber optics;
Ceramics in Environmental Applications;
Ceramics in Electronic, Photonic and Magnetic Applications;
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