TY - JOUR
T1 - Effects of ratios of Li2MnO3 and Li(Ni 1/3Mn1/3Co1/3)O2 phases on the properties of composite cathode powders in spray pyrolysis
AU - Son, Mun Yeong
AU - Hong, Young Jun
AU - Choi, Seung Ho
AU - Kang, Yun Chan
N1 - Funding Information:
This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea Government (MEST) (No. 2012R1A2A2A02046367 ). This research was supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology ( 2012R1A1B3002382 ).
PY - 2013
Y1 - 2013
N2 - Composite cathode powders of xLi2MnO3-(1 - x)Li(Ni1/3Mn1/3Co1/3)O2 (0 ≤ x ≤ 1) are prepared by spray pyrolysis. The BET surface areas of the composite powders post-treated at 800 C are 5, 12, 16, 12, 10, and 4 m2 g -1 for x = 0, 0.2, 0.4, 0.5, 0.8, and 1, respectively. The initial discharge capacities of the pure Li(Ni1/3Co1/3Mn 1/3)O2 and Li2MnO3 powders at a constant current density of 25 mA g-1 between 2.0 and 4.8 V are 219 and 27 mAh g-1, respectively. The initial discharge capacities of the composite cathode powders are 242, 283, 291, and 234 mAh g-1 for x = 0.2, 0.4, 0.5, and 0.8, respectively. The discharge capacity of the 0.5Li 2MnO3-0.5Li(Ni1/3Mn1/3Co 1/3)O2 cathode powder decreases from 291 to 266 mAh g -1 by the 50th cycle, giving a capacity retention of 92%.
AB - Composite cathode powders of xLi2MnO3-(1 - x)Li(Ni1/3Mn1/3Co1/3)O2 (0 ≤ x ≤ 1) are prepared by spray pyrolysis. The BET surface areas of the composite powders post-treated at 800 C are 5, 12, 16, 12, 10, and 4 m2 g -1 for x = 0, 0.2, 0.4, 0.5, 0.8, and 1, respectively. The initial discharge capacities of the pure Li(Ni1/3Co1/3Mn 1/3)O2 and Li2MnO3 powders at a constant current density of 25 mA g-1 between 2.0 and 4.8 V are 219 and 27 mAh g-1, respectively. The initial discharge capacities of the composite cathode powders are 242, 283, 291, and 234 mAh g-1 for x = 0.2, 0.4, 0.5, and 0.8, respectively. The discharge capacity of the 0.5Li 2MnO3-0.5Li(Ni1/3Mn1/3Co 1/3)O2 cathode powder decreases from 291 to 266 mAh g -1 by the 50th cycle, giving a capacity retention of 92%.
KW - Cathode material
KW - Composite material
KW - Lithium rich
KW - Spray pyrolysis
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U2 - 10.1016/j.electacta.2013.03.200
DO - 10.1016/j.electacta.2013.03.200
M3 - Article
AN - SCOPUS:84877672273
VL - 103
SP - 110
EP - 118
JO - Electrochimica Acta
JF - Electrochimica Acta
SN - 0013-4686
ER -