Materials for improved lifetime of saggar in production of Li-ion cathode powders

IF 1.8 4区材料科学 Q2 MATERIALS SCIENCE, CERAMICS International Journal of Applied Ceramic Technology Pub Date : 2024-08-19 DOI:10.1111/ijac.14897

Katja Waetzig, Thomas Hutzler, Eveline Zschippang

{"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":"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.","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}

引用次数: 0

Abstract

Ceramic saggars of mullite-cordierite are currently used to produce cathode powders for lithium-ion batteries. Strong interactions occur between the LiNi_0.8Mn_0.1Co_0.1O₂ (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.

Abstract Image

查看原文

微信好友朋友圈 QQ好友复制链接

本刊更多论文

锂离子阴极粉末生产中提高sagar寿命的材料

莫来石堇青石陶瓷sagar目前用于生产锂离子电池正极粉末。在煅烧温度（750 ~ 1000℃）范围内，LiNi0.8Mn0.1Co0.1O2 （NMC）前驱体之间发生强烈的相互作用，导致sagar腐蚀并形成裂纹。saggar的频繁失效造成了大量的浪费，通过选用耐腐蚀材料可以减少浪费。为了了解MgO - Al2O3 - SiO2体系中的腐蚀机理，将MgO、Al2O3、MgAl2O4和SiC（代替SiO2）材料包埋在预混的NMC前驱体中，在T = 780℃下煅烧50、100、150和200 h，通过相和显微组织分析确定了形成的相。最后，与Li4SiO4相比，LiAlO2和Li5AlO4的形成与腐蚀层的生长速度较低有关，而MgO是惰性的。与NMC的反应性排序如下：SiO2 >；氧化铝的在分别以。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文去求助

来源期刊

International Journal of Applied Ceramic Technology 工程技术-材料科学：硅酸盐

CiteScore

3.90

自引率

9.50%

发文量

280

审稿时长

4.5 months

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;