Open AccessA study of the effects of synthesis conditions on Li5FeO4/carbon nanotube composites
Author(s) -
Suk Woo Lee,
Hyun Kyung Kim,
Myeong Seong Kim,
Kwang Chul Roh,
Kwang Bum Kim
Publication year - 2017
Publication title -
scientific reports
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.24
H-Index - 213
ISSN - 2045-2322
DOI - 10.1038/srep46530
Subject(s) - materials science , carbon nanotube , composite material , composite number , lithium (medication) , impurity , nanotube , electrical resistivity and conductivity , chemistry , medicine , organic chemistry , engineering , electrical engineering , endocrinology
Li 5 FeO 4 /carbon nanotube (LFO/CNT) composites composed of sub-micron sized LFO and a nanocarbon with high electrical conductivity were successfully synthesized for the use as lithium ion predoping source in lithium ion cells. The phase of LFO in the composite was found to be very sensitive to the synthesis conditions, such as the heat treatment temperature, type of lithium salt, and physical state of the precursors (powder or pellet), due to the carbothermic reduction of Fe 3 O 4 by CNTs during high temperature solid state reaction. Under optimized synthesis conditions, LFO/CNT composites could be synthesized without the formation of impurities. To the best of our knowledge, this is the first report on the synthesis and characterization of a sub-micron sized LFO/CNT composites.