Synthesis of Birnessite-Type Lithium Manganese Oxide

Abstract

Birnessite-type lithium manganese oxide was obtained directly by reacting a Mn(NO3)2 solution with a mixed solution of H2O2 and LiOH at room temperature. The manganese oxide was characterized by X-ray, DTA-TG and chemical analysis. The manganese oxide had a layered structure with a single sheet of crystal water and lithium ions between two-dimensional edge-shared MnO6 octahedral sheets. The basal spacing along the c-axis was 0.713nm. The lithium ions in the interlayer space were ion-exchangeable with Na+ and K+, but partially with Mg2+.