How to discover lithium dendrites in energy storage batteries

What happens when lithium dendrites decompose?

The lithium dendrite reacts with the electrolyte, causing it to decompose and triggering the loss of active lithium inside the battery. The capacity loss is an accumulating effect along with the gradual lithium dendrite growth. Understanding the growth mechanism of lithium dendrites is beneficial for improving battery safety.

How do lithium ion batteries suppress Li dendrites?

The performance advance in lithium ion batteries is due to LATP guiding the uniform distribution of ions, suppressing the formation of space charge layers at the SSE/Li anode interface, and thus controlling the generation of Li dendrites.

How are dendrites formed in a solid-state Li battery?

NMR spectroscopy and imaging show that dendrites in a solid-state Li battery are formed from Li plating on the electrode and Li+ reduction at solid electrolyte grain boundaries, with an interlapped stalled growth period.

What are lithium dendrites?

Lithium dendrites are metallic microstructures that form on the negative electrode during the charging process. Lithium dendrites are formed when extra lithium ions accumulate on the anode surface and cannot be absorbed into the anode in time. They can cause short circuits and lead to catastrophic failures and even fires.

What causes dendritic growth in batteries?

The underlying cause of dendritic growth is the uneven deposition of Li metal. While the integration of SSEs can to some extent mitigate dendrite growth, it remains inevitable, especially under high current density.

Does a Li dendrite grow in a solid electrolyte?

However, recent studies have proved that the Li dendrite also grows and propagates in the solid electrolyte during cycling, and even more severely than in batteries using liquid electrolytes, because of the uneven charge distribution at the interface of electrolyte and electrode.