锂电池正极材料LiNixCoyMnzO2承烧用莫来石-堇青石质匣钵的研制

硅酸盐通报 ›› 2023, Vol. 42 ›› Issue (10): 3769-3777.

锂电池正极材料LiNi_xCo_yMn_zO₂承烧用莫来石-堇青石质匣钵的研制

段健健¹, 沈宏芳^1,2,3, 马聪聪¹, 孙文周^1,2,3, 张笑^1,2,3, 陆有军^1,2,3

1.北方民族大学材料科学与工程学院,银川 750021;
2.碳基先进陶瓷制备技术国家地方联合工程研究中心,银川 750021;
3.粉体材料与特种陶瓷省部共建重点实验室,银川 750021

收稿日期:2023-05-30 修订日期:2023-06-06 出版日期:2023-10-15 发布日期:2023-10-17
通信作者: 沈宏芳,博士,副教授。E-mail:shenhongfang@nun.edu.cn;陆有军,博士,教授。E-mail:youjunlu518@hotmail.com
作者简介:段健健(1993—),男,硕士研究生。主要从事耐火材料研究及功能陶瓷制备等方面的研究。E-mail:798698003@qq.com
基金资助:
宁夏回族自治区科学技术厅重点研发计划(2022BDE02003);北方民族大学研究生创新创业训练计划(YCX23101);国家自然科学基金(52104358)

Preparation of Mullite-Cordierite Sagger for Sintering Lithium Battery Cathode Material LiNi_xCo_yMn_zO₂

DUAN Jianjian¹, SHEN Hongfang^1,2,3, MA Congcong¹, SUN Wenzhou^1,2,3, ZHANG Xiao^1,2,3, LU Youjun^1,2,3

1. School of Materials Science & Engineering, North Minzu University, Yinchuan 750021, China;
2. National and Local Joint Engineering Research Center of Advanced Carbon-Based Ceramics Preparation Technology, Yinchuan 750021, China;
3. Key Lab of Powder Material & Advance Ceramics, Yinchuan 750021, China

Received:2023-05-30 Revised:2023-06-06 Online:2023-10-15 Published:2023-10-17

摘要/Abstract

摘要： 莫来石-堇青石质匣钵对于制备高性能锂电池正极材料尤为重要。本文采用莫来石(1.18~0.6 mm)和堇青石(2~1 mm)为骨料,莫来石(0.074 mm)、煅烧氧化铝(0.044 mm)、佛山黄泥(0.044 mm)和煤矸石(0.044 mm)为基质,在1 380 ℃下保温3 h烧结制备锂电池正极材料LiNi_xCo_yMn_zO₂(LNCM)承烧用莫来石-堇青石匣钵,并采用埋覆侵蚀法探究了正极材料在烧结过程中对匣钵的侵蚀行为。结果表明:在1 380 ℃下保温3 h烧结制备的匣钵力学性能和抗热震性均较好,其室温抗折强度为10.02 MPa,经3次热震循环后残余强度保持率在51.52%~53.26%;适当增加粗颗粒(1.18~0.6 mm)莫来石的含量可有效提高莫来石-堇青石匣钵的抗侵蚀性,且经侵蚀25次后匣钵表面的最大反应层厚度为447μm,最小反应层厚度为211 μm。

关键词: 莫来石, 堇青石, 匣钵, 抗侵蚀性, 侵蚀机理, 抗热震性, 反应层

Abstract: Mullite-cordierite sagger is particularly important for the preparation of high-performance lithium battery cathode materials. In this paper, mullite (1.18~0.6 mm) and cordierite (2~1 mm) were used as aggregates, and mullite (0.074 mm), calcined alumina (0.044 mm), Foshan yellow mud (0.044 mm) and coal gangue (0.044 mm) were used as matrix. Mullite-cordierite sagger for lithium battery cathode material LiNi_xCo_yMn_zO₂ (LNCM) was prepared by sintering at 1 380 ℃ for 3 h. The corrosion behavior of cathode material on sagger during sintering process was investigated by burying corrosion method. The results show that the mechanical properties and thermal shock resistance of sagger sintered at 1 380 ℃ for 3 h are good. The flexural strength at room temperature is 10.02 MPa, and the residual strength retention rate is 51.52%~53.26% after three thermal shock cycles. The corrosion resistance of mullite-cordierite sagger can be effectively improved by appropriately increasing the content of coarse particles (1.18~0.6 mm) of mullite. After 25 times of erosion, the maximum reaction layer thickness on sagger surface is 447 μm, and the minimum reaction layer thickness is 211 μm.

Key words: mullite, cordierite, sagger, corrosion resistance, corrosion mechanism, thermal shock resistance, reaction layer

中图分类号:

段健健, 沈宏芳, 马聪聪, 孙文周, 张笑, 陆有军. 锂电池正极材料LiNi_xCo_yMn_zO₂承烧用莫来石-堇青石质匣钵的研制[J]. 硅酸盐通报, 2023, 42(10): 3769-3777.

DUAN Jianjian, SHEN Hongfang, MA Congcong, SUN Wenzhou, ZHANG Xiao, LU Youjun. Preparation of Mullite-Cordierite Sagger for Sintering Lithium Battery Cathode Material LiNi_xCo_yMn_zO₂[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2023, 42(10): 3769-3777.

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锂电池正极材料LiNi_xCo_yMn_zO₂承烧用莫来石-堇青石质匣钵的研制

Preparation of Mullite-Cordierite Sagger for Sintering Lithium Battery Cathode Material LiNi_xCo_yMn_zO₂

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