Usually the phrase “power brick” refers affectionately to the AC adapter of something like a laptop. But what if that term was quite literal, involving an actual brick?
A team led by Hongmin Wang at Washington University set out to make a genuine power brick. More specifically, they wanted to see if they could use a vapor coating technique to turn ordinary red bricks into part of a supercapacitor. That actually isn’t quite as weird as it sounds, given that the red of a brick is an iron mineral, and iron is a common component of some battery chemistries.