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Sagger for positive electrode material of lithium ion battery and preparation method of sagger
The invention provides a sagger for a positive electrode material of a lithium ion battery and a preparation method, and belongs to the field of refractory materials. The sagger comprises the following raw materials in percentage by mass: 65%-75% of kyanite, 0.5%-3% of potassium carbonate, 0.5%-2% of silicon dioxide, 1%-5% of industrial aluminum oxide, 12%-20% of tabular corundum and 4%-8% of active alpha-aluminum oxide. By reasonably designing the raw material composition of the sagger, a kyanite-KAlSi2O6 core-shell structure is constructed, and KAlSi2O6 coats the surfaces of kyanite particles, so that the contact between the positive electrode material and kyanite in the sagger is effectively prevented, and the erosion reaction is avoided; meanwhile, KAlSi2O6 has good sinterability and forms tight connection with a surrounding matrix at a high temperature, and the high-temperature mechanical property of the sagger is improved. Therefore, the erosion resistance and the high-temperature mechanical property of the sagger for the lithium ion battery positive electrode material are improved at the same time.
本发明提供了一种锂离子电池正极材料用匣钵及制备方法，属于耐火材料领域。以质量分数计，所述匣钵包括如下原料：蓝晶石：65％‑75％，碳酸钾：0.5％‑3％，二氧化硅：0.5％‑2％，工业氧化铝：1％‑5％，板状刚玉：12％‑20％，活性α‑氧化铝：4％‑8％。通过合理设计匣钵的原料组成，构建蓝晶石‑KAlSi2O6核壳结构，KAlSi2O6包覆在蓝晶石颗粒表面，有效阻碍了正极材料与匣钵中蓝晶石的接触，避免了侵蚀反应的发生；同时，KAlSi2O6具有良好的烧结性，高温下与周围基质形成紧密连接，提高了匣钵的高温力学性能。从而同时提高了锂离子电池正极材料用匣钵的抗侵蚀性和高温力学性能。
Sagger for positive electrode material of lithium ion battery and preparation method of sagger
The invention provides a sagger for a positive electrode material of a lithium ion battery and a preparation method, and belongs to the field of refractory materials. The sagger comprises the following raw materials in percentage by mass: 65%-75% of kyanite, 0.5%-3% of potassium carbonate, 0.5%-2% of silicon dioxide, 1%-5% of industrial aluminum oxide, 12%-20% of tabular corundum and 4%-8% of active alpha-aluminum oxide. By reasonably designing the raw material composition of the sagger, a kyanite-KAlSi2O6 core-shell structure is constructed, and KAlSi2O6 coats the surfaces of kyanite particles, so that the contact between the positive electrode material and kyanite in the sagger is effectively prevented, and the erosion reaction is avoided; meanwhile, KAlSi2O6 has good sinterability and forms tight connection with a surrounding matrix at a high temperature, and the high-temperature mechanical property of the sagger is improved. Therefore, the erosion resistance and the high-temperature mechanical property of the sagger for the lithium ion battery positive electrode material are improved at the same time.
本发明提供了一种锂离子电池正极材料用匣钵及制备方法，属于耐火材料领域。以质量分数计，所述匣钵包括如下原料：蓝晶石：65％‑75％，碳酸钾：0.5％‑3％，二氧化硅：0.5％‑2％，工业氧化铝：1％‑5％，板状刚玉：12％‑20％，活性α‑氧化铝：4％‑8％。通过合理设计匣钵的原料组成，构建蓝晶石‑KAlSi2O6核壳结构，KAlSi2O6包覆在蓝晶石颗粒表面，有效阻碍了正极材料与匣钵中蓝晶石的接触，避免了侵蚀反应的发生；同时，KAlSi2O6具有良好的烧结性，高温下与周围基质形成紧密连接，提高了匣钵的高温力学性能。从而同时提高了锂离子电池正极材料用匣钵的抗侵蚀性和高温力学性能。
Sagger for positive electrode material of lithium ion battery and preparation method of sagger
一种锂离子电池正极材料用匣钵及制备方法
ZHANG YANG (author) / HOU HUANHUAN (author) / SU JINGBO (author) / WANG JIANLI (author) / KANG LE (author) / JIA CHUNYAN (author) / WANG YI (author) / ZHANG YANYAN (author) / REN XINLIN (author)
2024-10-11
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
/
F27D
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