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Effect of Synthesis Temperature on Structure and Electrochemical Performance of Spinel-Layered Li1.33MnTiO4+z in Li-Ion Batteriesopen access

Authors
Ngoc Hung VuVan-Duong DaoHa Tran HuuIm, Won Bin
Issue Date
Jun-2020
Publisher
MDPI
Keywords
spinel-layered; LiMnTiO4; sol-gel; cathode; Li-ion batteries
Citation
ENERGIES, v.13, no.11, pp.1 - 11
Indexed
SCIE
SCOPUS
Journal Title
ENERGIES
Volume
13
Number
11
Start Page
1
End Page
11
URI
https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/1894
DOI
10.3390/en13112962
Abstract
Herein, the spinel-layered cathode material Li1.33MnTiO4+z (0.8LiMnTiO(4)center dot 0.2Li(2)Mn(0.5)Ti(0.5)O(3)) is investigated for the purpose of developing a high-capacity, low-cost, and environmentally friendly cathode for Li-ion batteries. Sol-gel synthesis is conducted and the relationships between synthesis temperature, structure, and electrochemical performance of the cathodes are studied. The effects of size and purity on the capacities of these cathodes are discussed. The samples fired at 500 and 600 degrees C contain an impurity phase of TiO2, thus delivering capacities of 208 and 210 mAh g(-1) at C/10, respectively. The sample fired at 700 degrees C without the impurity phase of TiO2 shows a high capacity of 222 mAh g(-1) at C/10 and capacity retention of 90.5% after 100 cycles at 1C.
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COLLEGE OF ENGINEERING (SCHOOL OF MATERIALS SCIENCE AND ENGINEERING)
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