Lis (shanghai) Material Technology Co., Ltd.

Luri Bao

Yu Hu

Weiping Tang

Jingze Zhang

The present invention disclosures a preparation method for a coated lithium ion sieve, the method comprises: S01: calcining manganese salt in an air atmosphere for 2 h˜10 h to form MnO; S02: mixing MnOwith lithium salt and grinding, reacting in a high-pressure reaction kettle at 100° C.˜200° C. for 36 h˜72 h to form a product of LiMnO; wherein, the molar ratio of MnOand Li/Mn in the lithium salt is 1:1˜10:1; S03: adding LiMnOto a metal coating reagent and ultrasonic mixing for 2 h˜10 h, drying for 6 h˜24 h, and then calcining at 400° C.˜600° C. for 2 h˜10 h to form an oxide-coated LiMnOlithium ion adsorbent; Wherein, the molar ratio of the metal coating reagent to LiMnOis 0.01:1˜0.08:1; S04: performing an acid treatment to the oxide-coated LiMnOlithium-ion adsorbent to form an acidified product, washing the acidified product and drying to form the coated lithium-ion sieve. The cell structure of the coated lithium-ion sieve of the present invention is more stabler and can be reused for many cycles, which solves a problem that traditional HMnOlithium-ion sieve is easy to dissolve.

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Shanghai, China

Luri Bao