I have tried to dissolve powder coated on cathode of lithium ion batteries.
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1$\begingroup$ Review the guide How to ask and Asking FAQs to prevent clarification requests, objections, downvoting or closure. $\endgroup$– PoutnikCommented Dec 5, 2023 at 11:37
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$\begingroup$ There is no molecule of lithium cobalt oxide. $\endgroup$– PoutnikCommented Dec 5, 2023 at 14:33
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There is no molecule of lithium cobalt oxide. There are negatively charged layers of $\ce{CoO2}$ intercalated with positive lithium ions.
$\ce{LiCoO2}$ and $\ce{CoO2}$ are extreme and unstable states of the general composition $\ce{Li_xCoO2}$. $\ce{LiCoO2}$ tends to form separate $\ce{Li2O}$ and $\ce{Co2O3}$. $\ce{CoO2}$ tends to release $\ce{O2}$, forming $\ce{Co2O3}$. These states are avoided by the cell under-/overcharge control.
$\ce{Li_xCoO2}$ can be written as $\ce{Li_xCo^{III}_xCo^{IV}_{(1-x)}O2}$.
Reaction with water gradually leads to respective hydroxid / hydrated oxide and oxygen.
$$\ce{4 Li_xCo^{III}_xCo^{IV}_{(1-x)}O2 + $(2+2x)$ H2O -> 4x LiOH + 4 CoO(OH) + $(1-x)$ O2}$$
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$\begingroup$ Related discussion: chemistry.stackexchange.com/a/134739/17368 $\endgroup$ Commented Dec 5, 2023 at 15:56