Abstract
Materials science is increasingly relying on sustainable methods for the synthesis of advanced materials. This work demonstrates the first template-free approach for the crystallization of tavorite, LiFePO4(OH), in the form of hollow microspheres and unique core (single crystal)–shell (aggregated particles) cross-like dendrites. The different morphologies have been obtained by hydrothermal synthesis. The kinetic pathways of crystallization reveal how the transformation of two different thermodynamically unstable phases, such as giniite (Fe5(PO4)4(OH)2⋅2H2O) and lithium sulfate (Li2SO4), leads to the same tavorite structure, but with different morphologies based on the different mechanisms for crystal growth. Additionally, we provide standardized powder X-ray diffraction data and insights into the influence of the iron precursor on the crystal morphology of tavorite.
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