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发明公开
CN109896511A 一种Li1.3Al0.3Ti1.7(PO4)3粉体及其制备方法和应用 审中-实审

一种Li1.3Al0.3Ti1.7(PO4)3粉体及其制备方法和应用
摘要：
本发明公开了一种Li1.3Al0.3Ti1.7(PO4)3粉体及其制备方法和应用。本发明为了解决现有NASICON型固态电解质锂离子电导率低和致密度差的问题。一、按照化学计量比称取Ti源、Li源、Al源和P源；二、将Ti源溶解于稀硝酸中，再加入Li源和Al源，完全溶解后加入络合剂，待完全溶解后，调节pH值，再加入P源，完全溶解，再加入分散剂，搅拌均匀，蒸发水分直至得到粘稠的湿凝胶，真空干燥后煅烧，随炉冷却至室温，球磨，得到Li1.3Al0.3Ti1.7(PO4)3粉体。粉体经研磨，压片后烧结得到的电解质薄膜，可以用作全固态锂离子电池和锂空气电池的固态电解质。
摘要（英）：

The invention discloses Li1.3Al0.3Ti1.7(PO4)3 powder and a preparation method and application thereof, and is intended to solve the problem that existing NASICON type solid-state electrolyte has low lithium ion conductivity and poor compactness. The preparation method comprises I, weighing a Ti source, a Li source, an Al source and a P source in a stoichiometric ratio; II, dissolving the Ti sourcein dilute nitric acid, adding the Li source and the Al source, adding a complexing agent after full dissolution, adjusting pH after full dissolution, adding the P source, adding a dispersant after full dissolution, stirring well, evaporating water until viscous wet gel is attained, drying in vacuum, calcining, cooling with a furnace to room temperature, and carrying out ball milling to obtain theLi1.3Al0.3Ti1.7(PO4)3 powder. The Li1.3Al0.3Ti1.7(PO4)3 powder can be made into an electrolyte film by grinding, sheeting and sintering, and can act as a solid electrolyte to all-solid-state lithiumion batteries and lithium air batteries.

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