Як зберігати водень джерело чистої енергії майбутнього

There's no doubt that hydrogen holds a lot of promise as the clean energy source of the future. After all, when it is used as fuel, its only output is water. What remains an outstanding question about its use, though, is how to store it. Hydrogen is highly flammable and finding ways to contain it safely has proven to be quite a challenge for researchers.