- Titel
- A lithium–sulfur full cell with ultralong cycle life
- Untertitel
- influence of cathode structure and polysulfide additive
- Zitierfähige Url:
- https://nbn-resolving.org/urn:nbn:de:bsz:14-qucosa2-362513
- Quellenangabe
- Journal of Materials Chemistry. A, Materials for energy and sustainability Erscheinungsort: London
Verlag: Royal Society of Chemistry
Erscheinungsjahr: 2015
Jahrgang: 3
Heft: 7
Seiten: 3808-3820
E-ISSN: 2050-7496 - Erstveröffentlichung
- 2015
- Abstract (EN)
- Lithium–sulfur batteries are highly attractive energy storage systems, but suffer from structural anode and cathode degradation, capacity fade and fast cell failure (dry out). To address these issues, a carbide-derived carbon (DUT-107) featuring a high surface area (2088 m² g⁻¹), high total pore volume (3.17 cm³ g⁻¹) and hierarchical micro-, meso- and macropore structure is applied as a rigid scaffold for sulfur infiltration. The DUT-107/S cathodes combine excellent mechanical stability and high initial capacities (1098–1208 mA h gs ⁻¹) with high sulfur content (69.7 wt% per total electrode) and loading (2.3–2.9 mgs cm⁻²). Derived from the effect of the electrolyte-to-sulfur ratio on capacity retention and cyclability, conducting salt is substituted by polysulfide additive for reduced polysulfide leakage and capacity stabilization. Moreover, in a full cell model system using a prelithiated hard carbon anode, the performance of DUT-107/S cathodes is demonstrated over 4100 cycles (final capacity of 422 mA h gs ⁻¹), with a very low capacity decay of 0.0118% per cycle. Application of PS additive further boosts the performance (final capacity of 554 mA h gs ⁻¹), although a slightly higher decay of 0.0125% per cycle is observed.
- Andere Ausgabe
- Link zum Artikel, der zuerst in der Zeitschrift 'Journal of Materials Chemistry/A' erschienen ist.
DOI: 10.1039/c4ta06748g - Freie Schlagwörter (DE)
- Lithium-Schwefel-Batterien, hartmetallbasierter Kohlenstoff, Elektrolyt-/Schwefelverhältnis, Kapazitätserhaltung
- Freie Schlagwörter (EN)
- Lithium–sulfur batteries, carbide-derived carbon, electrolyte-to-sulfur ratio, capacity retention
- Klassifikation (DDC)
- 540
- 530
- Verlag
- Royal Society of Chemistry, London
- Förder- / Projektangaben
- German Federal Ministry of Economics and Energy Nanomaterials for future generation Lithium Sulphur batteries
- Version / Begutachtungsstatus
- publizierte Version / Verlagsversion
- URN Qucosa
- urn:nbn:de:bsz:14-qucosa2-362513
- Veröffentlichungsdatum Qucosa
- 19.12.2019
- Dokumenttyp
- Artikel
- Sprache des Dokumentes
- Englisch
- Lizenz / Rechtehinweis
