Cathode material of LiNi0.4 Co0.2Mn0.4O2 was prepared by mixed hydroxide or rheological reaction method at 850°C. within 15 h. The materials were characterized by XRD with Rietveld refinement, SEM, TG-DSC and electrochemical tests. The results showed that it has R-3m layered structure, with a high capacity and good thermal property. It delivered a specific capacity as high as 208.7 mA · h/g(2.0-4.6 V, 0.1 C). Phase change of LixNi0.4 Co0.2Mn0.4O2 (0 < x < 1) in charge-discharge process will affect the cyclic stability of the materials, especially in the first 10 circles.
Preparation, characterization and electrochemical performance of LiNi0.4 Co0.2Mn0.4O2 as cathode materials in lithium ion battery
Li J.;
2006-01-01
Abstract
Cathode material of LiNi0.4 Co0.2Mn0.4O2 was prepared by mixed hydroxide or rheological reaction method at 850°C. within 15 h. The materials were characterized by XRD with Rietveld refinement, SEM, TG-DSC and electrochemical tests. The results showed that it has R-3m layered structure, with a high capacity and good thermal property. It delivered a specific capacity as high as 208.7 mA · h/g(2.0-4.6 V, 0.1 C). Phase change of LixNi0.4 Co0.2Mn0.4O2 (0 < x < 1) in charge-discharge process will affect the cyclic stability of the materials, especially in the first 10 circles.File in questo prodotto:
Non ci sono file associati a questo prodotto.
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
