Paper-based devices with foldable, biodegradable batteries provide a new way to reduce electronic waste. But how would these new gadgets work?
High energy, high power and endless life cycles: not all batteries are created equal.
We need to think about the raw materials of batteries -- where they come from and their environmental cost.
Batteries that can self-sustain are needed for long-term animal tracking as well as shipping and logistics.
Emerging industries, from energy storage to electric cars, will need longer lasting batteries. Watching batteries in action will help us build them.