Description: Das Projekt "Entwicklung wiederaufladbarer Zink-Luft-Batterien" wird vom Umweltbundesamt gefördert und von Zentrum für Sonnenenergie- und Wasserstoff-Forschung Baden-Württemberg durchgeführt. General Information: Project Objectives: The aim of the programme described in this proposal is the development of an electrically rechargeable zinc-air battery using bifunctional air electrodes. This system stands out for its high energy density, good environmental compatibility, low cost of active materials, and wide operating temperature range (-10 C - +50 C). The goal of this programme is to demonstrate an electrically rechargeable Zn-air battery concept having the same high specific energy figures as the mechanically rechargeable Zn-air system without requiring extra infrastructure for recharging. Compared to existing advanced batteries such as MeH-Ni, Li-ion and high temperature Na-NiCl2 (ZEBRA) or Lion systems, Zn-air shows higher energy density, good environmental compatibility, low cost of active materials and a wide range of operating temperature. Furthermore Zn-air batteries arc advantageous with respect to safety. Due to its attractive features this system is regarded as a promising candidate for use in small scale PV applications, portable electronic devices and in electric vehicles. The goal of this programme is to demonstrate an electrically rechargeable Zn-air battery having an energy density of approximately 150 Wh/kg. To reach this goal, significant innovations will be needed with respect to the components used in the battery. Technical Approach: The project consists of three major experimental parts, two of them focusing on the development of components. The third task is oriented to cell/system engineering. Component development will be focused on innovative microstructures for the zinc and the air electrode. Furthermore, new, more active catalysts will be developed for the bifunctional air electrode. A system study will find market opportunities and will determine the technical and economical requirements for Zn-air batteries as ecologically beneficial electrochemical energy storage systems. Expected Achievements and Exploitation: This programme will result in optimised materials, electrode structures, and cell designs. The cycle life will be evaluated in test-cells of practical Sizer (25 to 200 cm2). It is expected to reach more than 600 cycles and a service life of more than 3 000 h for the bifunctional electrodes. In order to increase the specific power of the systems to be investigated, advanced cell designs will be built and tested. A module having a specific power of 100 W/kg at 80 per cent DOD and a specific energy of 150 Wh/kg, will be demonstrated. Further improvement of these performance figures should be possible in the futures.
Types:
SupportProgram
Origin: /Bund/UBA/UFORDAT
Tags: Fossiler Brennstoff ? Baden-Württemberg ? Werkstoff ? Aufladbare Gerätebatterie ? Akkumulator ? Katalysator ? Pflanzensamen ? Zink ? Elektro- und Elektronikgeräte ? Elektrochemische Energiespeicherung ? Batterie ? Zellstruktur ? Elektrofahrzeug ? Energie ? Energietechnik ? Innovation ? Kostensenkung ? Modul ? Sicherheitstechnik ? Studie ? REACH ? Warenangebot ? Umweltfreundliche Technologie ? Umweltverträglichkeit ? Physikalische Größe ? Energiespeicherung ? Elektrode ? other energy topics ? renewable sources of energy ?
Region: Baden-Württemberg
Bounding box: 9° .. 9° x 48.5° .. 48.5°
License: cc-by-nc-nd/4.0
Language: Deutsch
Time ranges: 1998-10-01 - 2001-09-30
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