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Cited by 300

The DOI matches its Crossref record; 36 of the 36 references it cites were found in a registry or an index.

Spherical Macroporous Carbon Nanotube Particles with Ultrahigh Sulfur Loading for Lithium–Sulfur Battery Cathodes

Gueon, Donghee, Hwang, Jeong Tae, Yang, Seung Bo, Cho, Eunkyung, Sohn, Kwonnam, Yang, Doo-Kyung, Moon, Jun Hyuk·2018·ACS Nano

Abstract

A carbon host capable of effective and uniform sulfur loading is the key for lithium–sulfur batteries (LSBs). Despite the application of porous carbon materials of various morphologies, the carbon hosts capable of uniformly impregnating highly active sulfur is still challenging. To address this issue, we demonstrate a hierarchical pore-structured CNT particle host containing spherical macropores of several hundred nanometers. The macropore CNT particles (M-CNTPs) are prepared by drying the aerosol droplets in which CNTs and polymer particles are dispersed. The spherical macropore greatly improves the penetration of sulfur into the carbon host in the melt diffusion of sulfur. In addition, the formation of macropores greatly develops the volume of the micropore between CNT strands. As a result, we uniformly impregnate 70 wt % sulfur without sulfur residue. The S-M-CNTP cathode shows a highly reversible capacity of 1343 mA h g –1 at a current density of 0.2 C even at a high sulfur content of 70 wt %. Upon a 10-fold current density increase, a high capacity retention of 74% is observed. These cathodes have a higher sulfur content than those of conventional CNT hosts but nevertheless exhibit excellent performance. Our CNTPs and pore control technology will advance the commercialization of CNT hosts for LSBs.

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Crossref · 10.1021/acsnano.7b05869

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Metadata

Authors
Gueon, D., Hwang, J. T., Yang, S. B., Cho, E., Sohn, K., Yang, D.-K., & Moon, J. H.
Venue
ACS Nano
Published
2018-01-04
Volume
12
Issue
1
Pages
226-233
ISSN
  • 1936-0851 (ISSN-L)
  • 1936-086X
OpenAlex
W2782378349
Cited by
300
References
36
FWCI
18.63
Type
journal article
Language
en
Open access
closed

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