POROUS MANGANESE OXIDE-BASED LITHIUM ADSORBENT HAVING A SPINEL STRUCTURE, AND METHOD FOR PREPARING SAME

摘要

The present invention relates to a method for preparing a porous manganese oxide-based lithium adsorbent, and more particularly, to a method for preparing a porous manganese oxide-based lithium adsorbent characterized by comprising the steps of: preparing a mixture by mixing an inorganic binder with reaction raw materials for synthesizing a lithium-manganese oxide precursor; molding said mixture; heat-treating said molded mixture so as to produce a porous lithium-manganese precursor molded body; and performing an acidic treatment so as to exchange lithium ions of said porous lithium-manganese oxide precursor molded body with hydrogen ions, wherein gas is generated during said heat treatment so as to form pores in the lithium-manganese oxide precursor molded body. The porous manganese oxide-based lithium adsorbent of the present invention can be easily handled and has high lithium adsorption efficiency by providing more adsorption reaction sites than conventional molded adsorbents.