Long life for the battery

A new generation of lithium batteries may soon power of the domestic solar photovoltaic panels on the roof and save the homeowner to independent power producers are doing. Electric chemists and electrical engineers to develop batteries from the Technical University of Munich and Litiumtitanat Litiumeisenphosphat, extremely durable and therefore will be cost effective. The project is funded by the Foundation nail cutters and at the Intersolar Europe 2011 in Munich on 8 - 10. June presented (Hall B3, Booth 230 of the Bayern Innovativ).

The switch to renewable energies will change our electricity networks completely. For electricity from wind and sun is not always equally available and there may not always be obtained where it is needed. be converted into One element of our electricity network has a distribution network to a konzipiertem European transport network. So far, this is done in pumped storage power plants, to the realization of compressed storage power plants are being researched intensively. An alternative of a decentralized power storage could be a new generation of lithium batteries, which Litiumtitanat (LTO) for the anode and Litiumeisenphosphat (LFP) for the cathode used.

At the Technical University Munich is currently developing electric chemists and electrical engineers together, such a LTO-LFP battery, which should be preserved to extremely many charge cycles and is therefore suitable as an electricity storage of photovoltaic panels. An experimental cells already demonstrated a lifetime of 20,000 cycles without a significant change in capacity - previously used for example only create Litiumionenbatterien 1000-3000 cycles.

So far, LTO-LFP batteries are still poorly understood, since they would be for electric cars too big and too heavy. Because applications as storage for renewable energy generally does not, however high level of energy density, longevity of LTO-LFP batteries make them a very inexpensive storage.

Source: Technical University Munich