TY - JOUR
T1 - The Improvement of Discharge Capacity of Zr-doped Lithium Titanate for Lithium Ion Batteries
AU - Chen, Yongjian
AU - Mu, Daobin
AU - Hang, Rong
AU - Wu, Borong
N1 - Publisher Copyright:
© The Authors, published by EDP Sciences, 2016.
PY - 2016/7/29
Y1 - 2016/7/29
N2 - Li4Ti5-xZrxO12 (0 ≤ x ≤ 0.05) materials are synthesized via one-step liquid method in this work. The morphology, elemental distribution and lithium storage performance of Zr-doped lithium titanate are systematic analyzed by field emitting scanning electron microscopy (FE-SEM, Hitachi S-4800), energy dispersive X-ray (EDS) and Land battery test system (LAND CT2001A) together with the pristine lithium titanate for comparison. The FE-SEM images show the uniform morphology and narrow particle size distribution of Zr-doped samples. The cycle performance measurements demonstrate that the Li4Ti4.97Zr0.03O12 electrode displays the best discharge capacities among the composites. It delivers the initial discharge capacities of 165.4 mAh/g and 152.9 mAh/g at 5C and 10C, and remains the values of 142.9 mAh/g and 127.4 mAh/g after 200 cycles. Furthermore, the charge and discharge curves exhibit that the Zr-doped composite presents smaller polarization than the pristine lithium titanate.
AB - Li4Ti5-xZrxO12 (0 ≤ x ≤ 0.05) materials are synthesized via one-step liquid method in this work. The morphology, elemental distribution and lithium storage performance of Zr-doped lithium titanate are systematic analyzed by field emitting scanning electron microscopy (FE-SEM, Hitachi S-4800), energy dispersive X-ray (EDS) and Land battery test system (LAND CT2001A) together with the pristine lithium titanate for comparison. The FE-SEM images show the uniform morphology and narrow particle size distribution of Zr-doped samples. The cycle performance measurements demonstrate that the Li4Ti4.97Zr0.03O12 electrode displays the best discharge capacities among the composites. It delivers the initial discharge capacities of 165.4 mAh/g and 152.9 mAh/g at 5C and 10C, and remains the values of 142.9 mAh/g and 127.4 mAh/g after 200 cycles. Furthermore, the charge and discharge curves exhibit that the Zr-doped composite presents smaller polarization than the pristine lithium titanate.
KW - Anode
KW - Lithium titanate
KW - Zirconium
UR - http://www.scopus.com/inward/record.url?scp=84982102782&partnerID=8YFLogxK
U2 - 10.1051/matecconf/20166706028
DO - 10.1051/matecconf/20166706028
M3 - Conference article
AN - SCOPUS:84982102782
SN - 2261-236X
VL - 67
JO - MATEC Web of Conferences
JF - MATEC Web of Conferences
M1 - 06028
T2 - International Symposium on Materials Application and Engineering, SMAE 2016
Y2 - 20 August 2016 through 21 August 2016
ER -
