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Easily sintered garnet type solid electrolyte and preparation method thereof
The invention discloses an easy-to-sinter garnet type solid electrolyte and a preparation method thereof. The general chemical formula of the garnet type solid electrolyte is Li < 7-y > La < 3 > Zr < 2-y > TayxNbxO12, x is more than or equal to 0.35 and less than or equal to 0.5, y is more than or equal to 0.4 and less than or equal to 0.65, and x is more than or equal to 1.3 and more than or equal to ygt; x. The garnet type solid electrolyte has the characteristic of easy sintering, a sintered compact ceramic material (the density is not less than 93%) can be obtained under a normal-pressure sintering condition, and the garnet type solid electrolyte has excellent lithium ion conductivity (greater than or equal to 1 mS/cm) at room temperature. The easy-to-sinter garnet electrolyte and the preparation method thereof are suitable for preparation of large-area high-ionic-conductivity garnet electrolyte sheets, and are applied to the field of energy storage of solid-state lithium batteries.
本发明公开了一种易烧结石榴石型固态电解质及其制备方法。所述的石榴石型固态电解质的化学通式为Li7‑yLa3Zr2‑yTay−xNbxO12，其中，0.35≤x≤0.5，0.4≤y≤0.65，且1.3x≥y>x。所述石榴石型固态电解质具有易烧结的特性，在常压烧结条件下可以得到烧结致密的陶瓷材料（致密度不低于93%），在室温下具有优异的锂离子电导率（≥1 mS/cm）。所述易烧结石榴石电解质及其制备方法适用于大面积高离子导率石榴石电解质片的制备，应用于固态锂电池储能领域。
Easily sintered garnet type solid electrolyte and preparation method thereof
The invention discloses an easy-to-sinter garnet type solid electrolyte and a preparation method thereof. The general chemical formula of the garnet type solid electrolyte is Li < 7-y > La < 3 > Zr < 2-y > TayxNbxO12, x is more than or equal to 0.35 and less than or equal to 0.5, y is more than or equal to 0.4 and less than or equal to 0.65, and x is more than or equal to 1.3 and more than or equal to ygt; x. The garnet type solid electrolyte has the characteristic of easy sintering, a sintered compact ceramic material (the density is not less than 93%) can be obtained under a normal-pressure sintering condition, and the garnet type solid electrolyte has excellent lithium ion conductivity (greater than or equal to 1 mS/cm) at room temperature. The easy-to-sinter garnet electrolyte and the preparation method thereof are suitable for preparation of large-area high-ionic-conductivity garnet electrolyte sheets, and are applied to the field of energy storage of solid-state lithium batteries.
本发明公开了一种易烧结石榴石型固态电解质及其制备方法。所述的石榴石型固态电解质的化学通式为Li7‑yLa3Zr2‑yTay−xNbxO12，其中，0.35≤x≤0.5，0.4≤y≤0.65，且1.3x≥y>x。所述石榴石型固态电解质具有易烧结的特性，在常压烧结条件下可以得到烧结致密的陶瓷材料（致密度不低于93%），在室温下具有优异的锂离子电导率（≥1 mS/cm）。所述易烧结石榴石电解质及其制备方法适用于大面积高离子导率石榴石电解质片的制备，应用于固态锂电池储能领域。
Easily sintered garnet type solid electrolyte and preparation method thereof
一种易烧结石榴石型固态电解质及其制备方法
HUANG SAIFANG (author) / SONG XIN (author) / CAO PENG (author) / FAN RONGZHENG (author) / ZHANG ZHENGHANG (author)
2022-07-08
Patent
Electronic Resource
Chinese
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