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Title: Improved Electrochemical Performance of Carbon-Coated LiFeBO3 Nanoparticles for Lithium-Ion Batteries

Carbon-coated LiFeBO3 nanoparticles have been successfully prepared by surfactant-assisted ball milling and a size selection process based on centrifugal separation. We observed monodispersed LiFeBO3 nanoparticles with dimensions of 10–20 nm by transmission electron microscope. The introduced surfactant acts as the dispersant as well as the carbon source for LiFeBO3 nanoparticles. Greatly improved discharge capacities of 190.4 mA h g–1 at 0.1 C and 106.6 mA h g–1 at 1 C rate have been achieved in the LiFeBO3 nanoparticles when cycling the cells between 1.0 V and 4.8 V. Meanwhile, the as-prepared micro-size LiFeBO3 electrodes show lower discharge capacities of 142 mA h g–1 and 93.3 mA h g–1 at 0.1 C and 1 C rates. Moreover, the post-treated LiFeBO3 nanostructure has drastically enhanced the electrochemical performance due to the short diffusion length and ameliorated electrical contract between LiFeBO3 nano particles.
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Publication Date:
OSTI Identifier:
Report Number(s):
Journal ID: ISSN 1533-4880
DOE Contract Number:
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Nanoscience and Nanotechnology; Journal Volume: 15; Journal Issue: 9; Related Information: Journal of Nanoscience and Nanotechnology
American Scientific Publishers
Research Org:
National Renewable Energy Laboratory (NREL), Golden, CO (United States)
Sponsoring Org:
USDOE Office of Energy Efficiency and Renewable Energy (EERE)
Country of Publication:
United States
14 SOLAR ENERGY; 77 NANOSCIENCE AND NANOTECHNOLOGY surfactant-assisted ball milling; centrifugal separation; LiFeBO3