Description: Das Projekt "Development of a highly efficient electrochemical storage unit for PV systems" wird vom Umweltbundesamt gefördert und von Zentrum für Sonnenenergie- und Wasserstoff-Forschung Baden-Württemberg durchgeführt. General Information: The work described in this proposal aims at the development of a comparatively inexpensive storage battery, the vanadium redox flow battery, which is specially adapted to stand-alone PV-systems requiring seasonal energy storage. The availability of such a battery will significantly reduce the currently high overall system cost. For seasonal energy storage, systems with high capacity are required. Classical secondary batteries, although capable of good energy efficiency in short term applications, suffer from self-discharge, limited system life and high cost. A combination of water electrolysis and fuel cells (hydrogen gas accumulator) suffers from low overall energy efficiency (=36 per cent). Redox flow batteries offer the possibility to design a high capacity storage energy system adapted to the power of a solar home system at high overall energy efficiency (=90 per cent). Furthermore, the cost of the system is limited, since only the active material and a comparatively inexpensive storage tank is required to provide additional capacity. From all possible redox flow batteries, the all vanadium system promises the lowest technical risk in realization. Within the project, suitable materials for high performance electrodes and low cost separators will be investigated. Furthermore, manufacturing technologies for modules and batteries of size up to 5 kW/100 kWh will be developed. Modules and batteries manufactured during the program will be subjected to bench tests and system tests in an existing PV-system. Optimized layouts for solar home systems will be developed as well. The partners are ZSW, Power cell and F.F. Lda, all of which have existing laboratory and testing infrastructures and long-term experience in the field of PV-systems and electrochemical energy storage technologies. ZSW is involved in several battery development and testing programs. Particular emphasis is given to battery related materials research. Power cell has long-term experience in design and manufacturing of flow type batteries. F.F. Lda has experience in the layout of PV- and small scale wind power systems. Prime Contractor: Zentrum für Sonnenenergie- und Wasserstoff-Forschung Baden-Württemberg; Ulm; Germany.
Types:
SupportProgram
Origin: /Bund/UBA/UFORDAT
Tags: Ulm ? Baden-Württemberg ? Vanadium ? Photovoltaikanlage ? Akkumulator ? Solarenergie ? Wasserstoff ? Windenergie ? Brennstoffzelle ? Elektrochemie ? Elektrochemische Energiespeicherung ? Batteriespeicher ? Alternative Energie ? Elektrolyse ? Verfahrenskombination ? Gasförmiger Stoff ? Tankbehälter ? Batterie ? Stromsystem ? Energie ? Energiegewinnung ? Energiespeicher ? Energiesystem ? Erneuerbare Ressource ? Jahreszeit ? Kostensenkung ? Modul ? Niedrigwasser ? Speicherfähigkeit ? Alternativtechnologie ? Laborversuch ? Minderungspotenzial ? Energieeffizienz ? Technisches Risiko ? Produktdesign ? Effizienzsteigerung ? Energiespeicherung ?
Region: Baden-Württemberg
Bounding box: 9° .. 9° x 48.5° .. 48.5°
License: cc-by-nc-nd/4.0
Language: Deutsch
Time ranges: 1997-03-01 - 2000-02-29
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