No, putting a dead lithium-ion battery in a freezer for 24 hours is not a recommended method for repairing it. In fact, it may cause more harm than good.
Lithium-ion batteries contain a chemical electrolyte that allows for the flow of ions between the positive and negative electrodes, generating electrical energy. Freezing a battery can actually lead to the formation of condensation when it's removed from the freezer and exposed to warmer temperatures. Moisture can damage the internal components of the battery and further reduce its performance or render it completely inoperable.
If you have a dead lithium-ion battery, it's unlikely that simply freezing it will revive it. Dead batteries often have underlying issues, such as internal chemical degradation or damaged cells, which cannot be fixed by temperature changes alone. It's best to properly recycle or dispose of dead lithium-ion batteries and replace them with new ones for optimal performance and safety.