Periodic Reporting for period 1 - MONBASA (MONOLITHIC BATTERIES FOR SPACESHIP APPLICATIONS)
Período documentado: 2016-06-01 hasta 2018-05-31
- An improved electrochemical performance of current solid state batteries based on high voltage cathodes and ceramic solid electrolytes with ionic conductivities much higher than commercial solid electrolytes.
- A full analysis of physical and chemical properties of the most relevant battery interface performed with the most advanced surface and interface analysis tools.
- Study of full cell integration with MEMS device (a crucial technology for sensors and actuators in most advanced satellites)
- The validated space applicability of the novel energy storage solution
For the ceramic electrolyte, three different fabrication routes were explored. The difficulties to obtain a functional cell pushed the consortium to explore new materials and processing methods such as transition metal accommodation layers and glassy electrolytes.
Concerning the anode, metallic Li was selected as starting material. High quality and high purity Li metal films have been obtained and tested with reference commercial solid electrolytes. The thin film Li anodes have shown an outstanding performance reducing the operating temperature of the solid electrolyte from 70 ºC to 45ºC (Fig. 3).
Different accommodation interlayers between cell components were also explored in order to guarantee higher stability during cycling.
For battery testing under space-like conditions, a device was specifically designed in the framework of the project (Fig. 4). The device was used to test some thin film cells assembled with liquid electrolyte which were compared with conventional cells. The cycling was carried out at different temperatures and under vacuum, the thin film cells with liquid electrolyte performed better than the conventional ones.
In addition, in the framework of the project three events were organized: an open ethic training given by Dr. Lluis Montoliu, an open seminar titled “Space Technologies for non-space actors” delivered by Nanospace’s CEO at M18 meeting and the final „Workshop on space batteries“ held within The Battery Show Europe 2018 in Hannover at M24. The first two events were recorded and spread through the MONBASA web page. On top of this, a brouchure was published and social network profiles were regularly fed with the most interesting news, results and relevant information to MONBASA project. Finally two Policy Briefs are in place and will be distributed in the following months.