Facile synthesis of porous LiMn2O4 nano-cubes for ultra-stable lithium-ion battery cathodes

Abstract

LiMn₂O₄ (LMO) nano-cubes with a porous structure were synthesized by a template-engaged reaction using pre-synthesized Mn₂O₃ porous nano-cubes as a self-sacrificing template. As a lithium-ion battery cathode material, LiMn₂O₄ nano-cubes with porous structure can effectively shorten the Li⁺ transport paths, which makes the LiMn₂O₄ material realize excellent Li⁺ extraction and insertion performance; the discharge specific capacity was 95.39 mA h g⁻¹ with a capacity retention rate of 90.91% after 500 cycles of stabilization at a current density of 100 mA g⁻¹. This work provides a reliable synthetic route for the synthesis of LiMn₂O₄ materials, which can be used as a potential solution for lithium manganate synthesis.