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Facile Synthesis of Carbon-Coated LiFeBO3 Microspheres by Spray Drying and Their Structural Properties

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Spherical LiFeBO3 (LFB) powder was successfully synthesized by a commercially available spray drying process. The powders were coated with a layer of carbon through a calcination step. This simple method allowed for fabrication of the powder with spherical particles and a homogeneous carbon coating. The crystal configuration, microstructure, and nature of the carbon coating were investigated by Rietveld refinement, Mössbauer spectroscopy, scanning electron microscopy, and transmission electron microscopy. The characterized structure had a monoclinic phase and belonged to the C2/c space group. The synthesized particles had a radius of 5 μm and were covered by a 6.5-nm-thick carbon coating. The spherical geometry of LFB with a well-encapsulated carbon coating layer is expected to enhanced powder density and result in good electrical performance. This preliminary study are expected to contribute to a deeper understanding of the novel LFB and aid the development of an effective method to fabricate cathode materials for Li-ion batteries.

Keywords: CARBON COATING; CATHODE MATERIALS; LIFEBO3; LITHIUM BATTERIES; SPHERICAL POWDER

Document Type: Research Article

Publication date: September 1, 2018

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  • Science of Advanced Materials (SAM) is an interdisciplinary peer-reviewed journal consolidating research activities in all aspects of advanced materials in the fields of science, engineering and medicine into a single and unique reference source. SAM provides the means for materials scientists, chemists, physicists, biologists, engineers, ceramicists, metallurgists, theoreticians and technocrats to publish original research articles as reviews with author's photo and short biography, full research articles and communications of important new scientific and technological findings, encompassing the fundamental and applied research in all latest aspects of advanced materials.
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