Porous spherical carbon/sulfur nanocomposites by aerosol-assisted synthesis: The effect of pore structure and morphology on their electrochemical performance as lithium/sulfur battery cathodes

Hiesang Sohn, Mikhail L. Gordin, Terrence Xu, Shuru Chen, Dongping Lv, Jiangxuan Song, Ayyakkannu Manivannan, Donghai Wang

Research output: Contribution to journalArticlepeer-review

69 Scopus citations

Abstract

Porous spherical carbons (PSCs) with tunable pore structure (pore volume, pore size, and surface area) were prepared by an aerosol-assisted process. PSC/sulfur composites (PSC/S, S: ca.59 wt %) were then made and characterized as cathodes in lithium/sulfur batteries. The relationships between the electrochemical performance of PSC/S composites and their pore structure and particle morphology were systematically investigated. PSC/S composite cathodes with large pore volume (>2.81 cm3/g) and pore size (>5.10 nm) were found to exhibit superior electrochemical performance, likely due to better mass transport in the cathode. In addition, compared with irregularly shaped carbon/sulfur composite, the spherical shaped PSC/S composite showed better performance due to better electrical contact among the particles.

Original languageEnglish (US)
Pages (from-to)7596-7606
Number of pages11
JournalACS Applied Materials and Interfaces
Volume6
Issue number10
DOIs
StatePublished - May 28 2014

All Science Journal Classification (ASJC) codes

  • Materials Science(all)

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