Double-shelled Co3O4/C nanocages enabling polysulfides adsorption for high-performance lithium-sulfur batteries

Lei Zhou, Hao Li, Xiaochao Wu, Yue Zhang, Dmitri L. Danilov, Rüdiger A. Eichel, Peter H.L. Notten (Corresponding author)

Onderzoeksoutput: Bijdrage aan tijdschriftTijdschriftartikelAcademicpeer review

9 Citaten (Scopus)
49 Downloads (Pure)


Rechargeable lithium-sulfur (Li-S) batteries, which originate from the merits of extraordinary theoretical specific energy density, abundant resources, and eco-friendly character, have received ever-growing attention. However, their practical applications are seriously hampered because of the poor conductive property of the sulfur and the discharging products, severe dissolution and migration of lithium polysulfide intermediates, and huge volumetric variation of sulfur particles upon cycling. Here, double-shelled Co3O4 and carbon (Co3O4/C) hollow nanocages as sulfur host materials are reported. The double-shelled structures can significantly boost the adsorption of soluble polysulfides and the electrical conductivity of sulfur cathodes. Consequently, the prepared S@Co3O4/C cathodes achieve considerable capacity enhancement and excellent rate capability, combining the durable cycling life at 1 C for 500 cycles, in which the overall capacity fading remains as low as 0.083% per cycle. Upper-plateau (QH) and lower-plateau (QL) capacities, static adsorption of polysulfides, and X-ray photoelectron spectroscopy (XPS) analyses unveil the underlying nature of the chemical interactions between polysulfide species and the sulfur host. The present results will favor the design and screening of prospective host materials to boost future Li-S batteries.

Originele taal-2Engels
Pagina's (van-tot)8153-8162
Aantal pagina's10
TijdschriftACS Applied Energy Materials
Nummer van het tijdschrift11
StatusGepubliceerd - 25 nov 2019

Vingerafdruk Duik in de onderzoeksthema's van 'Double-shelled Co<sub>3</sub>O<sub>4</sub>/C nanocages enabling polysulfides adsorption for high-performance lithium-sulfur batteries'. Samen vormen ze een unieke vingerafdruk.

Citeer dit