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Title: Improved Electrochemical Performance of Carbon-Coated LiFeBO 3 Nanoparticles for Lithium-Ion Batteries

Carbon-coated LiFeBO 3 nanoparticles have been successfully prepared by surfactant-assisted ball milling and a size selection process based on centrifugal separation. We observed monodispersed LiFeBO 3 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 LiFeBO 3 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 LiFeBO 3 nanoparticles when cycling the cells between 1.0 V and 4.8 V. Meanwhile, the as-prepared micro-size LiFeBO 3 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 LiFeBO 3 nanostructure has drastically enhanced the electrochemical performance due to the short diffusion length and ameliorated electrical contract between LiFeBO 3 nano particles.
Authors:
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Publication Date:
OSTI Identifier:
1227672
Report Number(s):
NREL/JA-5900-65478
Journal ID: ISSN 1533-4880
DOE Contract Number:
AC36-08GO28308
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
Publisher:
American Scientific Publishers
Research Org:
National Renewable Energy Lab. (NREL), Golden, CO (United States)
Sponsoring Org:
USDOE Office of Energy Efficiency and Renewable Energy (EERE)
Country of Publication:
United States
Language:
English
Subject:
14 SOLAR ENERGY; 77 NANOSCIENCE AND NANOTECHNOLOGY; surfactant-assisted ball milling; centrifugal separation; LiFeBO3