In a non-energy efficient and air polluted world, an innovation which helps purify the air and store the hydrogen gas is like a boon. The device is a result of the two separate teams working in for their respective tasks of air purifying and gas storing. The two teams merged and made a single device capable of doing both. The air purification is done with the help of sunlight which would help in eliminating the volatile organic compounds present in the air which are extremely harmful. Read more at: https://www.livescience.com/59173-device-purifies-air-and-creates-energy.html