One-pot conversion of carbon dioxide to CNT-grafted graphene bifunctional for sulfur cathode and thin interlayer of Li-S battery

Cited 5 time in webofscience Cited 0 time in scopus
  • Hit : 172
  • Download : 0
Gaseous carbon dioxide (CO2) was converted into few-layered graphene sheets grafted by carbon nanofibers (G-CNFs) at the atmospheric pressure. The synthesis was performed in a one-pot route by the thermal Mg-aided reduction of CO2 in the presence of nickel nanoparticles that have a crucial role in the growth of carbon nanofibers. The produced G-CNF was bifunctionally applied as a cathode supporter for elemental sulfur and a thin interlayer for the separator in the Li–S battery. The graphene layers exfoliated by the carbon nanofibers enabled the formation of semi-freestanding membrane through sonication in a surfactant solution. They were attached on the separator to be used as a several micron-thick interlayer. The G-CNF employed as both cathode and interlayer materials enhanced the charge-discharge capacity and stability due to its low electrical resistivity and its role as a barrier to the polysulfides shuttle. As a result, a high capacity of 820 mAhg−1 and 640 mA h g−1 after 100 and 500 cycles were acquired at 0.5 C, respectively. The results suggest not only the facile one-step conversion of atmospheric CO2 to the exfoliated graphene grafted by carbon nanofibers, but also its outstanding electrochemical performance in the Li–S battery.
Publisher
PERGAMON-ELSEVIER SCIENCE LTD
Issue Date
2020-01
Language
English
Article Type
Article
Citation

ELECTROCHIMICA ACTA, v.330, pp.135264

ISSN
0013-4686
DOI
10.1016/j.electacta.2019.135264
URI
http://hdl.handle.net/10203/270079
Appears in Collection
CBE-Journal Papers(저널논문)
Files in This Item
There are no files associated with this item.
This item is cited by other documents in WoS
⊙ Detail Information in WoSⓡ Click to see webofscience_button
⊙ Cited 5 items in WoS Click to see citing articles in records_button

qr_code

  • mendeley

    citeulike


rss_1.0 rss_2.0 atom_1.0