|About this Abstract
||2021 TMS Annual Meeting & Exhibition
||Corrosion in Heavy Liquid Metals for Energy Systems
||Corrosion Investigations of Materials in Antimony-tin and Antimony-bismuth Alloys For Liquid Metal Batteries
||Tianru Zhang, Annette Heinzel, Adrian Jianu, Alfons Weisenburger, Georg Müller
|On-Site Speaker (Planned)
Liquid metal batteries are discussed as stationary electrical energy storage for renewable energies, in order to compensate their fluctuating supply of energy. A liquid metal battery consists of three different liquid, which stay segregated due to density differences and mutual immiscibility. The negative electrode is the low density liquid metal, in our case sodium, a medium density molten salt is the electrolyte and positive electrode is a high density liquid metal. For the latter Sb-Sn and Sn-Bi alloys are selected. However, one issue is the compatibility of the structural materials with the used liquids. In a first step the behaviour of potential structural materials in Sb3Sn7 and SbBi9 at temperatures between 370-450°C up to 750h were tested. The result showed that the corrosion in SbBi9 was significantly less than in Sb3Sn7 and the most promising materials were molybdenum and Max-phase coatings.