Affiliation:
1. The Hydrogen and fuel cell center (ZBT) Carl-Benz-Straße 201 47057 Duisburg Germany
2. Forschungsinstitut Edelmetalle+Metallchemie (fem) Katharinenstraße 17 73525 Schwäbisch Gmünd Germany
3. Lehrstuhl Energietechnik University Duisburg-Essen Lotharstraße 8 47048 Duisburg Germany
Abstract
AbstractLithium‐sulfur batteries have a high energy density but lack cycle stability to reach market maturity. This is mainly due to the polysulfide shuttle mechanism, i. e., the leaching of active material from the cathode into the electrolyte and subsequent side reactions. We demonstrate how to attenuate the polysulfide shuttle by magnetron sputtering molybdenum oxysulfide, manganese oxide, and chromium oxide onto microporous polypropylene separators. The morphology of the amorphous coatings was analyzed by SEM and XRD. Electrochemical cyclization quantified how these coatings improved Coulombic efficiency and cycle stability. These tests were conducted in half cells. We compare the different performances of the different coatings with the known chemical and adsorption properties of the respective coating materials.
Cited by
1 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献