What if your saw could be powered by the sawdust it generates?

Sounds far-fetched but it could someday become a reality – not using actual sawdust, but using power from a battery that contains wood fiber, sodium, and tin. Scientists at the University of Maryland have been experimenting with just such a battery. Wood fibers that once held mineral rich water inside a tree are ideal for storing the electrolytes used in batteries. In the experimental battery the fibers are coated with tin and sodium is used in place of lithium-ion. These environmentally friendly batteries are not as efficient as lithium-ion batteries and would likely be targeted towards large applications at solar farms and power plants. You might not put a wood fiber battery in the tool, but it could be powered or charged with electricity that came from a wood fiber battery.