文献类型：期刊文献

英文题名：Synthesized K2O center dot 11Al(2)O(3) as sagger matrix for the preparation of Li-ion battery cathode materials at high temperatures

作者：Zhai, Pengtao[1,2];Liu, Mingyang[2];Zhou, Wenying[2];Chen, Liugang[2];Ding, Dafei[2];Ye, Guotian[2]

第一作者：Zhai, Pengtao

通讯作者：Zhai, PT[1]

机构：[1]Henan Univ Econ & Law, Sch Engn Management & Real Estate, Jinshui East Rd 180, Zhengzhou 450046, Peoples R China;[2]Zhengzhou Univ, Henan Key Lab High Temp Funct Ceram, Zhengzhou, Peoples R China

第一机构：河南财经政法大学工程管理与房地产学院

通讯机构：[1]corresponding author), Henan Univ Econ & Law, Sch Engn Management & Real Estate, Jinshui East Rd 180, Zhengzhou 450046, Peoples R China.|[1048420]河南财经政法大学工程管理与房地产学院;[10484]河南财经政法大学;

年份：2021

卷号：18

期号：3

起止页码：1017-1024

外文期刊名：INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000605767900001)】；

基金：The authors thank the National Natural Science Foundation of China (51572244, U1604252, and 51802287) for the financial support.

语种：英文

外文关键词：corrosion; corrosion resistance; interfaces; thermal shock; thermal shock resistance; refractories

摘要：Refractory materials such as mullite, andalusite, forsterite, and cordierite are generally used to prepare saggers for the calcination of Li-ion battery Li(NixCoyMnz)O-2 (LNCM) cathode material. However, these compounds are prone to be attacked by the LNCM materials, thereby leading to short life spans and contamination of the Li-ion battery cathode materials. To improve the corrosion resistance of refractory sagger materials, the most clear cut-way is enhancing the corrosion resistance of matrix using a new refractory component. Potassium aluminate (K2O center dot 11Al(2)O(3), KA(11)) with an excellent corrosion resistance against alkaline oxide was synthesized via solid-state method using potassium carbonate (K2CO3) and industrial alumina powder (Al2O3). Interactions between KA(11) and LNCM cathode materials at 800 degrees C-1100 degrees C were characterized by refractory-LNCM precursor laboratory-scale tests to understand the corrosion behavior of KA(11). The microstructure and phase composition of synthesized KA(11) and the calcined KA(11)-LNCM mixture cylinders were analyzed with SEM and XRD. The observations reveal that KA(11) shows a better corrosion resistance to LNCM materials compared with mullite, cordierite, and forsterite. The addition of synthesized KA(11) also favors the thermal shock resistances of mullite-based sagger materials.