Brain opening! Leaves can also make batteries

A few days ago, researchers at the University of Maryland in the United States used oak leaves and some sodium to make environmentally friendly batteries
with convenient materials and low costs.
Can leaves also make batteries? Yes, you heard it right
.

The researchers first baked oak leaves at 1,000 degrees Celsius for an hour to carbonize the leaves, followed by sodium
added.
The back of the oak leaves is covered with pores that were originally used to absorb water, and the researchers used these pores to absorb sodium electrolytes
.
The front of the leaves has turned into layers of nanostructured carbon that absorbs the charge-carrying sodium
.
The whole process forms the positive and negative poles
of the sodium battery.

In detail, sodium batteries and the current mainstream lithium batteries on the market came out almost at the same time, sodium batteries are more efficient, but because the right electrode material has not been found, the cycle life of sodium batteries is far less than lithium batteries
.
Many scientists are working to solve the problem of
sodium battery materials.
The next step they plan to make batteries from leaves of different shapes, hoping to find the best thickness, structure and elasticity for energy storage
.
The researchers currently have no plans to
put leaf batteries into commercial production.