1. ITV Report

Battery made of sprouts powers Christmas tree

A team of scientists has created the world's first battery made entirely of Brussels sprouts which is being used to light an 8 foot Christmas tree on London's Southbank.

. Credit: The Big Bang UK

The "Sprout Battery" was unveiled this morning with the help of Year 7 pupils from City of London Academy in Islington. The device was created through The Big Bang UK Young Scientists & Engineers Fair.

. Credit: The Big Bang UK

The battery was created using five power cells, each holding 200 sprouts, producing 63 volts from the 1,000 Brussels sprouts.

. Credit: The Big Bang UK

Copper and Zinc electrodes are placed in each Brussels sprout to create a chemical reaction between the electrodes, generating a current which can be stored and used to power the LEDs on the tree.

. Credit: The Big Bang UK

The power is stored in a capacitor and released through 100 high efficiency LED lights. The Big Bang scientists are able to monitor the voltage on a separate display, which shows how much energy is being produced by the sprouts.

. Credit: The Big Bang UK

We want young people to think about STEM subjects in an interesting way and are always looking for different ways to do that.

It being the festive time of year - and kids' dislike of sprouts being well documented - using them to create a battery seemed like a unique way to achieve that aim.

Paul Jackson, the CEO of EngineeringUK

– Paul Jackson, EngineeringUK
. Credit: The Big Bang UK