Curtailing Carbon Usage with Addition of Functionalized NiFe₂O₄ Quantum Dots: Toward More Practical S Cathodes for Li-S Cells.

ABSTRACT: Smart combination of manifold carbonaceous materials with admirable functionalities (like full of pores/functional groups, high specific surface area) is still a mainstream/preferential way to address knotty issues of polysulfides dissolution/shuttling and poor electrical conductivity for S-based cathodes. However, extensive use of conductive carbon fillers in cell designs/technology would induce electrolytic overconsumption and thereby shelve high-energy-density promise of Li-S cells. To cut down carbon usage, we propose the incorporation of multi-functionalized NiFe₂O₄ quantum dots (QDs) as affordable additive substitutes. The total carbon content can be greatly curtailed from 26% (in traditional S/C cathodes) to a low/commercial mass ratio (~ 5%). Particularly, not

SUBMITTER: Li N 

PROVIDER: S-EPMC7770776 | biostudies-literature | 2020 Jul

REPOSITORIES: biostudies-literature