LiNiO_2(R3m) powders were synthesized by a sol-gel method using adiphic acid as a chelating agent. Highly crystallized LiNiO_2 was synthesized in oxygen at a calcination temperature of 750℃ for 14 h when molar ratio of adiphic acid to total metal io...
LiNiO_2(R3m) powders were synthesized by a sol-gel method using adiphic acid as a chelating agent. Highly crystallized LiNiO_2 was synthesized in oxygen at a calcination temperature of 750℃ 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 LiNiO_2 powders were monodispersed particulate with the average size of approximately 1-2㎛. The electrochemical test of a half cell fabricated using the LiNiO_2 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. ⓒ 1999 Published by Elsevier Science B.V. All rights reserved.