Startling is this fact about solar power that, just about an hour of sunlight hitting the Earth’s surface is sufficient to fulfill the power needs of humans for an entire year!!! However, we know that if our systems were that efficient how much power we could generate with the sun rays coming down on our planet for the whole year. Besides expensive silicon components of a photovoltaic panel and low system efficiency, till now our knowledge on the mechanism behind solar storage was also limited. Bugged by the twin factors of inefficiency and expense a MIT professor Daniel Nocera undertook an exhaustive research at the end of (which he believes) his team has unlocked the ‘nirvana of energy’.The Henry Dreyfus Professor of Energy, Prof. Nocera has made a discovery that may change the way we have so far used solar power through PV cells. Being inspired by green plants that photosynthesize and store solar energy all the time in them, Prof. Nocera has developed a simple method to split H2O molecules.

The end products being Oxygen and Hydrogen gases. The hydrogen thus produced may then store the solar energy. His study has resulted in the emergence of a new catalyst. The latter consists of phosphate, cobalt metal, and an electrode. This new catalyst is easy to set-up and works on neutral pH at normal room temperature.When the catalyst is placed in water and current is run through the electrode, oxygen gas is produced. When another catalyst is used to produce hydrogen gas, the oxygen and hydrogen combine inside a fuel cell, creating carbon-free electricity.

This simple set up can be used to power a house or an electric car irrespective of time (day or night). The whole set up can be duplicated in large numbers to harness the abundant sunshine bestowed to us by Mother Nature. Whether this clean technology will massively cut down the energy requirements of mankind is yet to be explored. But one this is for sure, this discovery has opened new avenues in the commercial usage of solar power.
Via: Goodcleantech