With one bottle of drinking water and four hours of sunlight an MIT scientist says he can produce 30 kWh of electricity enough to power an entire household in the developing world. With three gallons of river water Dan Nocera says, he could satisfy the daily energy needs of a large American home. The key to these claims is a new, affordable catalyst that uses solar electricity to split water and generate hydrogen. Using the electricity generated from a 30 square meter photovoltaic array, Nocera’s cobalt-phosphate catalyst converts water and carbon dioxide into hydrogen and oxygen. The process is similar to photosynthesis except that in nature plants create energy in the form of sugars instead of hydrogen produced through artificial photosynthesis can be stored in a tank and later used to produce electricity by being recombined with oxygen in a fuel cell, even when the sun is not shining. Alternatively the hydrogen can be converted into a liquid fuel. Almost all the solar energy is stored in water splitting; Nocera said at the first ever ARPAE (Advanced Research Projects Agency Energy) conference. We emulated photosynthesis for large scale storage energy.
Nano way to produce electricity found
A team of scientists at MIT has discovered a previously unknown phenomenon that can cause powerful waves of energy to shoot through minuscule wires known as carbon nano tubes, a discovery that could lead to a new way to producing electricity. The phenomenon described as thermo-power wave opens up a new area of energy research which is rare said Michael Strano Professor of Chemical Engineering who was the senior author of a paper describing the new findings. Like a collection of flotsam propelled along the surface by waves traveling across the ocean, it turns out that a thermal wave – a moving pulse of heat – traveling along a microscope wire can drive electrons along creating an electrical current. 27th May 2010 From India