See-through battery in the works

Imagine a smartphone that looks like a piece of clear plastic, lighting up to display contacts, a game, the weather, or email from a friend. That future may be upon us thanks to a new, transparent and flexible lithium-ion battery.

Lithium-ion batteries are the type of energy storage devices that power consumer electronics such as smartphones.

Transparent components of gadgets such as touch screens, displays, and optical circuits have been fabricated, but until now, batteries have prevented fully see-through gadgets from entering the marketplace because the materials used to make batteries are not see-through.