论文信息 - Synthesis and characterization of LiNiO2 cathode material prepared by an adiphic acid-assisted sol–gel method for lithium secondary batteries

Synthesis and characterization of LiNiO2 cathode material prepared by an adiphic acid-assisted sol–gel method for lithium secondary batteries

Abstract LiNiO2 (R3m) powders were synthesized by a sol–gel method using adiphic acid as a chelating agent. Highly crystallized LiNiO2 was synthesized in oxygen at a calcination temperature of 750°C for 14 h when molar ratio of adiphic acid to total metal ions was 1.0. The intensity ratio of (003)/(104) peaks of XRD spectrum for the synthesized material was 1.67. The LiNiO2 powders were monodispersed particulate with the average size of approximately 1–2 μm. The electrochemical test of a half cell fabricated using the LiNiO2 powders revealed that the cell had a high initial discharge capacity of 158 mAh g−1, but it showed very fast capacity fading just after several tens of charge/discharge cycles.

[1] Jeff Dahn,et al. Structure and electrochemistry of Li1±yNiO2 and a new Li2NiO2 phase with the Ni (OH)2 structure , 1990 .

[2] M. Ichimura,et al. Characterization and cathode performance of Li1 − xNi1 + xO2 prepared with the excess lithium method , 1995 .

[3] T. Ohzuku,et al. Electrochemistry and Structural Chemistry of LiNiO2 (R3̅m) for 4 Volt Secondary Lithium Cells , 1993 .

[4] Crystal structure study of LiNi1−xMnxO2 , 1995 .

[5] S. Yamada,et al. Synthesis and properties of LiNiO2 as cathode material for secondary batteries , 1995 .

[6] Edward J. Plichta,et al. A rechargeable Li/LixCoO2 Cell , 1987 .

[7] V. Manev,et al. The LiNiO2 solid solution as a cathode material for rechargeable lithium batteries , 1995 .

[8] John B. Goodenough,et al. LixCoO2 (0, 1980 .