This work synthesised layered structural orthorhombic LiMnO2 powder via a hydrothermal process. The influences of hydrothermal temperature (tr°), reaction time (tht), molar concentration of LiOH.H2O in aqueous solutions (CLH), and the ratio of Mn2O3 powder (xr/t) were investigated. A high-purity LiMnO2 powder was successfully synthesised using hydrothermal synthesis at CLH = 4M, tht = 8 h, tr° = 180 °C, and xr/t = 0.9. The synthesis LiMnO2 powders have layer structure, and the planar density calculations indicated that the (021) planes had a lower average planar density than those of (100) and (010) planes, which led to a faster crystal growth on (021) planes. Moreover, single crystals of LiMnO2 were pseudo-hexagonal also due to the lower average planar density of (221) planes compared to that of (021) planes, which made the crystal grow faster on (221) planes.

Ngoc Binh Duong

Van Thang Pham

Tuan Hung Hoang

SYNTHESIS OF ORTHORHOMBIC LiMnO2 BY HYDROTHERMAL PROCESS

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Journal Info

Category	Quartile
METALLURGY & METALLURGICAL ENGINEERING	3