Follow your curiosity

What discovery has been shared with you?

FACTREE gives you something interesting to discover every day — and something worth talking about together.

Start with one fact. Explore it, go deeper, then follow whichever branch catches your imagination.

Choose subjects for a surprise

Exploring any topic

Begin your discovery

Your next discovery is one click away.

Choose one or more subjects above, or leave Any Topic selected and let curiosity decide.

Technology

Solid-State Lithium Metal Batteries with Sulfide Electrolytes

Quick fact

Sulfide electrolytes can have ionic conductivities comparable to or even exceeding that of liquid electrolytes, over 10 mS/cm, which was once thought impossible for solids.

Why this is interesting

You know how your phone battery can catch fire or slowly lose capacity? What if the liquid inside were replaced with a solid material that could store more energy and never combust?