Electronium

Electronium is one recent new material in the mod and it's superior even to Dineutronium, although it only has 2 uses.

Crafting
It's crafted in the Book of Boxcars GUI by placing a charged dineutronium dynosphere in each slot (4 in total) then you can pick you ingot.

Uses
Crafting the FEnSU (see Energy Storage Block), and the electronium cube, the most powerful battery in the mod, with a storage of 1 Ehe.

Trivia
-It's completely composed of electrons, somehow it doesn't fly apart due to all the particles having the same charge.

-It's supposedly the ultimate material, being superior to dineutronium in terms of power storage, though it only has two uses.