A new generation of Lihtium batteries could soon store the electricity of the home photovoltaic system on the roof and make thus house-owners self-sufficient power producers. Electric chemists and electrical engineers of the Technische Universität München (TUM) develop accumulators from Lithiumtitanat and Lithium-iron-phosphate which will be extremely long long-lasting and cost efficient.The change on renewable energy will completely change our electricity networks. Since power from wind and sun is not always steadily available and can be not always be produced where it is consumed. Hence, on the one hand, our power power supply system must be chemnged from a network of distributors to a European conceived transport network. On the other hand electricity must be stored. Up to now this happens in pumped storage plants. An alternative as a decentralised power memory could be a new generation of Lithium batteries, the Litiumtitanat (LTO) for the anode and Litium-iron-phosphate (LFP) for the cathode uses.
At the TUM electric chemists and electrical engineers currently develop together such a LTO LFP battery which should be long-lasting throughout many loading cycles and could be suited, hence, possibly as a power storage of photovoltaic systems. In test cells a life span of 20,000 cycles was already proved without considerable change of the capacity - up to now common Lithiumionbatteries, for example, create only 1,000 to 3,000 cycles.
Up to now LTO LFP batteries are still investigated a little, because they would be too big for electric cars and would be too heavy. Since applications for power storage for renewable energies don´t require a high energy density , the longevity of LTO LFP batteries makes them very reasonable as a storage for them.
Contact:
Prof. Andreas Jossen
Lehrstuhl für Elektrische Energiespeichersysteme
der Technischen Universität München
Stipendiat der Stiftung Nageschneider: Diplom-Ingenieur Ralph Karl
Tel. 089 289 26966
E-Mail: [email protected]
Prof. Hubert Gasteiger
Lehrstuhl für Technische Elektrochemie
der Technischen Universität München
Stipendiatin der Stiftung Nagelschneider: Diplom-Chemikerin Rebecca Zeh
Tel. über 089 289 22562
E-Mail: [email protected]
This would help to store energy to recharge our Tesla at home as well to charge quick charging stations at night while the energy demand is low and to quick charge the cars with high power (>100kW) through the day without putting stress on the grid.