While renewable energy obviously is a good idea, sources like wind and sunshine have the downside of not flowing constantly 24/7. Furthermore, the time of day where, for example, the sun is shining, might not be the period with the highest demand - at least not in Europe, where aircondition isn't a matter of course as it is in other parts of the world. So, one of the major obstacles for the energy changeover is the problem of storage.
In response to the urgent renewable energy needs of modern society and ecological concerns, it is essential to develop novel inexpensive and environmentally friendly energy conversion and storage systems. Mesoscopic dye-sensitized solar cells (DSCs) have recently emerged as a credible alternative to solid-state p-n junction photovoltaic devices, primarily due to their potential to generate electricity on resource-abundant raw materials and energy-saving device processing. The famed carbon nanotubes significantly raise the efficiency.
Neither in phyics nor in chemistry 'electricity' has a state of aggregation but jointly the two disciplines can create something of that effect . This can minimize the effects of the time-variability of most renewable energy sources and, by better storage possibilities, ease the pressure on battery development.
From 2020 on, at the latest, renewable energy will have a significantly large share in Europe's energy mix – at least if there aren't too many irresponsible politicians around. Currently, all Western European countries have targets aimed at boosting the contribution of renewable energy, which is only possible through efficient energy storage methods. According to a new market analysis, this has the potential to create huge opportunities for market growth.
Green power is an unstable commodity. Photovoltaic plants rest at night, and wind turbines stand still when there are lulls in the wind. This is why in the future there will be a need for intermediate storage of considerable amounts of environmentally friendly power. A big issue for Fraunhofer, the large German research institution which is going to demonstrate various solutions at the Hanover fair.
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