Choi, SH Kim, J Yoon, YS 2024-01-21T06:06:07Z 2024-01-21T06:06:07Z 2021-09-05 2004-11-15 0378-7753 https://pubs.kist.re.kr/handle/201004/137053 In the charged condition, batteries are in a state of high energy relative to that of the system in the discharged state. Hence, there is a 'driving force', corresponding to the free energy of discharge, which tends to spontaneously diminish the charge if some mechanisms for self-discharge exist. We determined the self-discharge of Li/LiCoO2 cells from the decline of their open-circuit voltage and the rate of loss of the discharge capacity. In addition, we studied ac impedance of Li/LiCoO2 cells. Prevention of self-discharge is especially important for munitions that have remained in a state of disuse. In the case of nanocrystalline LiCoO2, cycle performance is superior to coarse-grained LiCoO2. However, self-discharge performance is inferior to coarse-grained LiCoO2. A better cycle performance of up to 200 cycles might be due to a well-formed SEI layer and smaller particle size in nanocrystalline LiCoO2. (C) 2004 Elsevier B.V. All rights reserved. English ELSEVIER SOLID-ELECTROLYTE INTERFACE PROPYLENE CARBONATE OXIDE Self-discharge analysis of LiCoO2 for lithium batteries Article 10.1016/j.jpowsour.2004.06.047 1 JOURNAL OF POWER SOURCES, v.138, no.1-2, pp.283 - 287 JOURNAL OF POWER SOURCES 138 1-2 283 287 scie scopus 000225154600037 2-s2.0-8444236385 Chemistry, Physical Electrochemistry Energy & Fuels Materials Science, Multidisciplinary Chemistry Electrochemistry Energy & Fuels Materials Science Article SOLID-ELECTROLYTE INTERFACE PROPYLENE CARBONATE OXIDE lithium cobalt oxide Li-ion battery self-discharge