It looks like you're using an Ad Blocker.
Please white-list or disable AboveTopSecret.com in your ad-blocking tool.
Some features of ATS will be disabled while you continue to use an ad-blocker.
I really wasn't sure what a wood battery would look like. I knew you could make a battery out of a potato and wires, so I figured maybe they were doing something similar with a block of wood.
Wrong. The "wood" is actually microscopic wood fibers that are fashioned into thin sheets. The sheets are then coated with carbon nanotubes and packed into small metal discs.
The wood batteries use sodium ions, rather than the lithium ions that are found in the batteries of cellphones and laptops. In this case, the charged particles move around in the wood fibers, creating an electric current. It turns out wood is a good medium for sodium ions to move around in.
Now, wood is comparatively cheap. So is sodium. Liangbing Hu, head of the battery project, says he's hoping the new batteries can be scaled up so they'll be useful for storing the vast amounts of energy generated by solar arrays or wind farms.