Nanometer spherical spinel lithium manganates with about 20nm in diameter were
synthesized for the first time by explosive method. The water-solubility explosive
was prepared using a simple facility at room temperature. The growth of lithium
manganate via detonation reaction was investigated with respect to the presence of
an energetic precursor, such as the metallic nitrate and the degree of confinement of
the explosive charge. For detonation of the water-solubility explosive, the
detonation pressure, the detonation temperature and the adiabatic gamma were 2-5
GPa, 2000-3000 K and close to 3. The inherent short duration, high heating rate
(1010-1011 K/s) and high cooling rate (108-109 K/s) prevent the lithium
manganate crystallites from growing into larger sizes and induce considerable
lattice distortion.
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