Abstract
A combined thermal decomposition followed by a solid-state reaction route was employed to re-synthesize non-stoichiometric LiCoO2 extracted from cathodes of two discarded batteries with low and high state of health (SOH). Stoichiometric and structurally ordered Li1CoO2 compounds were obtained from the re-synthesis process, without any influence of the battery's SOH. However, smaller grains and higher specific discharge capacity were obtained for the Li1CoO2 electrodes manufactured from the re-synthesized cathode powder extracted from the low SOH battery. Results indicate that the battery's SOH is a parameter that should be considered in LiCoO2 re-synthesis processes based on solid-state reactions, since it affects grain morphology and electrochemical properties of the electrodes manufactured from the re-synthesized LiCoO2.
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