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SAGGER FOR FIRING LITHIUM SECONDARY BATTERY POSITIVE ELECTRODE ACTIVE MATERIAL AND METHOD FOR MANUFACTURING SAME
The present invention provides a sagger for firing a lithium secondary battery positive electrode active material, wherein the sagger includes 70 to 99.5 at.% of MgO and 0.5 to 30 at.% of Al2O3 and has a porosity of 10 % or less. According to the present invention, the sagger has increased strength and thermal shock resistance in comparison with a conventional sagger and has a lowered reactivity with lithium, and thus is not broken even after being fired repeatedly 100 times or more. Considering that a conventional sagger is broken after being firing about 30 times, the sagger according to thepresent invention has a durability at least 3 times higher than the conventional sagger.
本发明提供一种锂二次电池正极活性物质烧成用匣钵，其特征在于，由70至99.5at.％的MgO及0.5至30at.％的AlO构成，具有10％以下的气孔率。根据本发明，相比现有匣钵，强度及热冲击抵抗性增加，与锂的反应性降低，即使反复烧成100次以上，匣钵也不破损。当考虑到以往匣钵在约30次烧成下破损的情形时，本发明的匣钵相比以往匣钵，耐久性高3倍以上。
SAGGER FOR FIRING LITHIUM SECONDARY BATTERY POSITIVE ELECTRODE ACTIVE MATERIAL AND METHOD FOR MANUFACTURING SAME
The present invention provides a sagger for firing a lithium secondary battery positive electrode active material, wherein the sagger includes 70 to 99.5 at.% of MgO and 0.5 to 30 at.% of Al2O3 and has a porosity of 10 % or less. According to the present invention, the sagger has increased strength and thermal shock resistance in comparison with a conventional sagger and has a lowered reactivity with lithium, and thus is not broken even after being fired repeatedly 100 times or more. Considering that a conventional sagger is broken after being firing about 30 times, the sagger according to thepresent invention has a durability at least 3 times higher than the conventional sagger.
本发明提供一种锂二次电池正极活性物质烧成用匣钵，其特征在于，由70至99.5at.％的MgO及0.5至30at.％的AlO构成，具有10％以下的气孔率。根据本发明，相比现有匣钵，强度及热冲击抵抗性增加，与锂的反应性降低，即使反复烧成100次以上，匣钵也不破损。当考虑到以往匣钵在约30次烧成下破损的情形时，本发明的匣钵相比以往匣钵，耐久性高3倍以上。
SAGGER FOR FIRING LITHIUM SECONDARY BATTERY POSITIVE ELECTRODE ACTIVE MATERIAL AND METHOD FOR MANUFACTURING SAME
锂二次电池正极活性物质烧成用匣钵及其制造方法
YOO JIHOON (author) / PARK JUNGSIK (author) / SEONG DAEYONG (author) / CHOI WONSEOK (author) / HWANG JIHOON (author) / KIM YONGSEOG (author) / CHOI YOHAN (author)
2020-06-02
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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