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Magnesium batteries: a study of self-discharge and heat generation

Mohsin, Ijaz Ul ORCID iD icon 1; Riedel, S. 2,3; Xiu, Yanlei 2,3; Zhao-Karger, Z. 2,3; Ziebert, Carlos ORCID iD icon 1
1 Institut für Angewandte Materialien – Angewandte Werkstoffphysik (IAM-AWP), Karlsruher Institut für Technologie (KIT)
2 Institut für Nanotechnologie (INT), Karlsruher Institut für Technologie (KIT)
3 Helmholtz-Institut Ulm (HIU), Karlsruher Institut für Technologie (KIT)

Abstract:

There has long been an interest in magnesium batteries as an alternative to lithium-ion batteries due to their substantial abundance, cheaper, and sustainability. The interaction between Mg2+ and electrolyte solutions and cathode materials causes slow ion dissociation and diffusion, leading to low power output. Despite still under development, magnesium-ion batteries have the potential to compete with lithium-ion batteries in terms of volumetric and specific capacities. Mo6S8 (chevrel phase), 1,4-polyanthraquinone (14PAQ), and 1,5-polyanthraquinone (15PAQ) cathode materials-based coin cells are assembled against Mg-foil as an anode by using 0.3M Mg[B(hfip)4]2 /DME, 0.5M Mg[B(hfip)4]2 /DME and 0.5M Mg[B(hfip)4]2.3DME in tetraglyme electrolytes. The chevrel phase (CP) was found to be more suitable in respect of heat generation. Nevertheless, the specific capacity is comparatively lower than organic-based cathode materials. It is equally important for battery kinetics to have a well-designed electrolyte, therefore different solvents with the same conductive salt are utilized. The noticeable differences are observed and in tetraglyme solvent stable cyclic and fewer self-discharge phenomena are observed. ... mehr


Zugehörige Institution(en) am KIT Institut für Angewandte Materialien – Angewandte Werkstoffphysik (IAM-AWP)
Helmholtz-Institut Ulm (HIU)
Institut für Nanotechnologie (INT)
Publikationstyp Poster
Publikationsdatum 06.09.2022
Sprache Englisch
Identifikator KITopen-ID: 1000154425
HGF-Programm 38.02.01 (POF IV, LK 01) Fundamentals and Materials
Veranstaltung 4th International Symposium on Magnesium Batteries (MAGBATT 2022), Ulm, Deutschland, 06.09.2022 – 08.09.2022
Projektinformation EXC 2154/1; POLiS (DFG, DFG EXSTRAT, EXC 2154/1_I)
Schlagwörter cathode material, heat generation, electrolyte, capacity retention, self-discharging
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