Multiple Effects of High Surface Area Hollow Nanospheres Assembled by Nickel Cobaltate Nanosheets on Soluble Lithium Polysulfides.

ABSTRACT: Inhibiting the shuttle effect of soluble polysulfides and improving slow reaction kinetics are key factors for the future development of Li-S batteries. Herein, edelweiss shaped NiCo₂O₄ hollow nanospheres with a high surface area were prepared by a simple template method to modify the separator to realize multiple physical constraints and strong chemical anchoring on the polysulfides. On one hand, the good electrolyte wettability of NiCo₂O₄ promoted the migration of Li-ions and greatly improved the dynamics. On the other hand, mesoporous NiCo₂O₄ nanomaterials provided many strong chemical binding sites for loading sulfur species. The hollow structure also provided a physical barrier to mitigate the sulfur species diffusion.

SUBMITTER: Pu J 

PROVIDER: S-EPMC9961496 | biostudies-literature | 2023 Feb

REPOSITORIES: biostudies-literature