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Long-life ternary positive electrode material firing sagger and preparation process
The invention provides a long-life ternary positive electrode material firing sagger and a preparation process, and relates to the technical field of saggers for lithium battery positive electrode material roasting, the sagger comprises the following raw materials by mass: 12-15% of alumina, 22-25% of cordierite, 25-28% of spinel, 18-20% of kaolin, 3-6% of silicon nitride, 8-10% of zirconium silicate, and 3-5% of magnesium oxide. In the formula of the sagger, silicon nitride, zirconium silicate and magnesium oxide are also added in addition to aluminum oxide, cordierite, spinel and kaolin; silicon nitride can improve the melting point of a ceramic material and increase the sintering density of the ceramic material, so that the cracking resistance of the sagger is improved, zirconium silicate can improve the corrosion resistance of the sagger and prolong the service life of the sagger, and magnesium oxide can reduce the thermal expansion coefficient of the sagger and improve the thermal stability of the sagger; therefore, the thermal stability, the corrosion resistance and the crack resistance of the sagger are remarkably improved, the sagger can be used for multiple times for a long time, and the service life of the sagger is prolonged.
本发明提供一种长寿命三元正极材料烧制匣钵及制备工艺，涉及锂电池正极材料焙烧用匣钵技术领域，匣钵包括以下质量百分比的原料：氧化铝12～15％、堇青石22～25％、尖晶石25～28％、高岭土18～20％、氮化硅3～6％、硅酸锆8～10％、氧化镁3～5％。本发明中的匣钵，其配方中在氧化铝、堇青石、尖晶石、高岭土之外还加入了氮化硅、硅酸锆、氧化镁；氮化硅能提高陶瓷材料的熔融点，增加其烧结密度，从而增加其抗开裂性，硅酸锆能提升匣钵的耐腐蚀性，延长其寿命，再有，氧化镁可以降低匣钵的热膨胀系数，提高热稳定性；从而，本发明的匣钵的热稳定性、耐腐蚀性以及抗裂性能均有显著提升，能长时间的多次使用，增加其使用寿命。
Long-life ternary positive electrode material firing sagger and preparation process
The invention provides a long-life ternary positive electrode material firing sagger and a preparation process, and relates to the technical field of saggers for lithium battery positive electrode material roasting, the sagger comprises the following raw materials by mass: 12-15% of alumina, 22-25% of cordierite, 25-28% of spinel, 18-20% of kaolin, 3-6% of silicon nitride, 8-10% of zirconium silicate, and 3-5% of magnesium oxide. In the formula of the sagger, silicon nitride, zirconium silicate and magnesium oxide are also added in addition to aluminum oxide, cordierite, spinel and kaolin; silicon nitride can improve the melting point of a ceramic material and increase the sintering density of the ceramic material, so that the cracking resistance of the sagger is improved, zirconium silicate can improve the corrosion resistance of the sagger and prolong the service life of the sagger, and magnesium oxide can reduce the thermal expansion coefficient of the sagger and improve the thermal stability of the sagger; therefore, the thermal stability, the corrosion resistance and the crack resistance of the sagger are remarkably improved, the sagger can be used for multiple times for a long time, and the service life of the sagger is prolonged.
本发明提供一种长寿命三元正极材料烧制匣钵及制备工艺，涉及锂电池正极材料焙烧用匣钵技术领域，匣钵包括以下质量百分比的原料：氧化铝12～15％、堇青石22～25％、尖晶石25～28％、高岭土18～20％、氮化硅3～6％、硅酸锆8～10％、氧化镁3～5％。本发明中的匣钵，其配方中在氧化铝、堇青石、尖晶石、高岭土之外还加入了氮化硅、硅酸锆、氧化镁；氮化硅能提高陶瓷材料的熔融点，增加其烧结密度，从而增加其抗开裂性，硅酸锆能提升匣钵的耐腐蚀性，延长其寿命，再有，氧化镁可以降低匣钵的热膨胀系数，提高热稳定性；从而，本发明的匣钵的热稳定性、耐腐蚀性以及抗裂性能均有显著提升，能长时间的多次使用，增加其使用寿命。
Long-life ternary positive electrode material firing sagger and preparation process
一种长寿命三元正极材料烧制匣钵及制备工艺
XIAO HUAN (author) / LIU ZUOREN (author) / XIE DAJUN (author)
2024-03-15
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
/
F27D
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