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Improving the electrochemical properties of Al, Zr Co-doped Li4Ti5O12 as a lithium-ion battery anode material

Title
Improving the electrochemical properties of Al, Zr Co-doped Li4Ti5O12 as a lithium-ion battery anode material
Authors
Park, Jung SooBaek, Seong-HoPark, YiseulKim, Jae Hyun
DGIST Authors
Baek, Seong-Ho; Kim, Jae Hyun
Issue Date
2014-05
Citation
Journal of the Korean Physical Society, 64(10), 1545-1549
Type
Article
Article Type
Article
Keywords
Al and Zr Co-DopingAnode MaterialsLi4Ti5O12Lithium Ion Batteries
ISSN
0374-4884
Abstract
Li4Ti5O12 and Al3+, Zr4+ co-doped Li(4-x/3)AlxTi(5-5x/3)ZrxO12 (x = 0.01, 0.05, 0.1, 0.15, 0.2) were synthesized at 950 °C via a solid state reaction by using rutile TiO2, Li2 CO3, and Al2O3 as precursors for the anode material of a lithium-ion battery. The average particle sizes of Li(4-x/3)AlxTi(5-5x/3)ZrxO12 (x = 0, 0.01, 0.05, 0.1, 0.15, 0.2) range from 700 to 1200 nm. The particle sizes of pure Li4Ti5O12 and Al3+, Zr4+ co-doped Li4Ti5O12 were not obviously different, but did result in a shift in the (111) peak in X-ray diffraction. Li(4-x/3)AlxTi(5-5x/3)ZrxO12 (x = 0.01) exhibits an excellent rate capability with a reversible capacity of 127.7 mAh/g at a 5 C-rate and even 113.1 mAh/g at a 10 C-rate. The capacity retention was improved remarkably compared to that for an undoped anode when discharged at a high C- rate. © 2014 The Korean Physical Society.
URI
http://hdl.handle.net/20.500.11750/5256
DOI
10.3938/jkps.64.1545
Publisher
Korean Physical Society
Related Researcher
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Collection:
Smart Textile Convergence Research Group1. Journal Articles


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