A battery inspired by vitamins

What is the main challenge with renewable energy sources like wind and solar?

• They are too expensive to implement.

• They are not available all the time.

• They produce harmful emissions.

• They require a lot of space.

What significant change did Harvard researchers make to conventional battery electrolytes in 2014?

• They replaced quinones with metal ions in acidic electrolytes.

• They replaced metal ions with quinones in acidic electrolytes.

• They used metal ions in alkaline electrolytes.

• They used quinones in alkaline electrolytes.

What is a key feature of flow batteries?

• They use quinones to generate electricity.

• They are only used for small-scale applications.

• They store energy in solid-state cells.

• They store energy in solutions in external tanks.

How do the new molecules inspired by vitamin B2 differ from quinones?

• They are not suitable for alkaline flow batteries.

• They use oxygen atoms instead of nitrogen atoms.

• They use nitrogen atoms instead of oxygen atoms.

• They do not involve any atoms in electron transfer.

Why are the new vitamin B2 inspired molecules considered cost-effective?

• They are only available in small quantities.

• They can be produced on a large scale at low cost.

• They require complex manufacturing processes.

• They are made from rare materials.