Open AccessNano-LiNiO2 as cathode material for lithium ion battery synthesized by molten salt method
Author(s) -
Ying Bai,
Bei Wang,
Weifeng Zhang
Publication year - 2011
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.60.068202
Subject(s) - molten salt , materials science , electrochemistry , lithium (medication) , ion , diffusion , salt (chemistry) , battery (electricity) , cathode , stoichiometry , chemical engineering , lithium ion battery , nano , inorganic chemistry , composite material , thermodynamics , chemistry , metallurgy , electrode , organic chemistry , medicine , power (physics) , physics , engineering , endocrinology
Molten salt method is applied to synthesis stoichiometric nano-LiNiO2 in rather low temperature and short time. Our results indicate that in the process of preheating the better-crystallized LiNiO2 powder with better electrochemical performances can be produced. The final samples before and after preheating exhibit the initial discharge capacities of 151 and 148 mAh ·g-1 respectively. After 100 cycles, they decay to only 55 and 118 mAh ·g-1, with capacity retentions being 36.4% and 79.7% respectively. The lowered cation disordering is thought to be favorable for the diffusion of lithium ions, by which the enhanced electrochemial properties can be explained.