Effects of high-energy milling on the solid-state synthesis of pure nano-sized Li4Ti5O12 for high power lithium battery applications

Title
Effects of high-energy milling on the solid-state synthesis of pure nano-sized Li4Ti5O12 for high power lithium battery applications
Author(s)
윤당혁한승우정좌영[정좌영]
Keywords
ELECTROCHEMICAL PROPERTIES; SPINEL LI4TI5O12; BARIUM-TITANATE; TIO2 ANATASE; RUTILE TIO2; POWDER; TETRAGONALITY; PERFORMANCE; TRANSITION; INSERTION
Issue Date
201403
Publisher
SPRINGER
Citation
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING, v.114, no.3, pp.925 - 930
Abstract
Li4Ti5O12 was synthesized from Li2CO3 and anatase TiO2 using different degree of milling to test the hypothesis that finer starting materials can result in a smaller Li4Ti5O12 particle size and better high-rate discharging capacities. The degree of milling was controlled using three different ZrO2 media sizes for 3 hours of high-energy milling, whereas 5 mm balls were used for 24 hours ball milling. High-energy milling produced significantly finer starting materials and Li4Ti5O12 particles compared to those produced by ball milling. Among the three different balls used in high-energy milling, the 0.10 mm media showed the most favorable results. Pure Li4Ti5O12 with a mean particle size of 146 and 175 nm were synthesized by an economic solid-state reaction combined with high-energy milling using 0.05 and 0.10 mm beads, respectively. These pure nano-sized Li4Ti5O12 exhibited a much higher specific capacity and superior rate capability than those of coarse rutile TiO2-contained Li4Ti5O12 particles.
URI
http://hdl.handle.net/YU.REPOSITORY/32836http://dx.doi.org/10.1007/s00339-013-7768-2
ISSN
0947-8396
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공과대학 > 신소재공학부 > Articles
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