Polystyrene-templated aerosol synthesis of MoS 2 -amorphous carbon composite with open macropores as battery electrode

Seung Ho Choi, Yun Chan Kang

Research output: Contribution to journalArticle

23 Citations (Scopus)

Abstract

MoS 2 -amorphous carbon (MoS 2 -AC) composite microspheres with macroporous structure were fabricated by one-pot spray pyrolysis. Single- or few-layered MoS 2 were uniformly dispersed and oriented in random directions in the amorphous carbon microsphere with macropores sizes between 50 and 90 nm. The macroporous microspheres having a high contact area with liquid electrolyte exhibited overall superior Li- and Na-ion storage properties compared with those of the dense microspheres. After 250 charge/discharge cycles at a current density of 1.5 Ag -1 , the discharge capacities of the MoS 2 -AC microspheres with dense and macroporous structures for Li-ion storage were 694 and 896 mAhg -1 , respectively. In the case of Naion storage, discharge capacities of 336 and 425 mAhg -1 were achieved for the dense and macroporous microspheres, respectively, after 100 cycles at 0.3 Ag -1 .

Original languageEnglish
Pages (from-to)2260-2267
Number of pages8
JournalChemSusChem
Volume8
Issue number13
DOIs
Publication statusPublished - 2015 Jul 1

Fingerprint

Polystyrenes
Amorphous carbon
macropore
Aerosols
Microspheres
electrode
aerosol
Electrodes
carbon
Composite materials
ion
electrolyte
pyrolysis
spray
Ions
liquid
Spray pyrolysis
Contacts (fluid mechanics)
Electrolytes
battery

Keywords

  • Anodes
  • Batteries
  • Carbon
  • Composites
  • Metal sulfide

ASJC Scopus subject areas

  • Environmental Chemistry
  • Chemical Engineering(all)
  • Materials Science(all)
  • Energy(all)

Cite this

Polystyrene-templated aerosol synthesis of MoS 2 -amorphous carbon composite with open macropores as battery electrode . / Choi, Seung Ho; Kang, Yun Chan.

In: ChemSusChem, Vol. 8, No. 13, 01.07.2015, p. 2260-2267.

Research output: Contribution to journalArticle

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N2 - MoS 2 -amorphous carbon (MoS 2 -AC) composite microspheres with macroporous structure were fabricated by one-pot spray pyrolysis. Single- or few-layered MoS 2 were uniformly dispersed and oriented in random directions in the amorphous carbon microsphere with macropores sizes between 50 and 90 nm. The macroporous microspheres having a high contact area with liquid electrolyte exhibited overall superior Li- and Na-ion storage properties compared with those of the dense microspheres. After 250 charge/discharge cycles at a current density of 1.5 Ag -1 , the discharge capacities of the MoS 2 -AC microspheres with dense and macroporous structures for Li-ion storage were 694 and 896 mAhg -1 , respectively. In the case of Naion storage, discharge capacities of 336 and 425 mAhg -1 were achieved for the dense and macroporous microspheres, respectively, after 100 cycles at 0.3 Ag -1 .

AB - MoS 2 -amorphous carbon (MoS 2 -AC) composite microspheres with macroporous structure were fabricated by one-pot spray pyrolysis. Single- or few-layered MoS 2 were uniformly dispersed and oriented in random directions in the amorphous carbon microsphere with macropores sizes between 50 and 90 nm. The macroporous microspheres having a high contact area with liquid electrolyte exhibited overall superior Li- and Na-ion storage properties compared with those of the dense microspheres. After 250 charge/discharge cycles at a current density of 1.5 Ag -1 , the discharge capacities of the MoS 2 -AC microspheres with dense and macroporous structures for Li-ion storage were 694 and 896 mAhg -1 , respectively. In the case of Naion storage, discharge capacities of 336 and 425 mAhg -1 were achieved for the dense and macroporous microspheres, respectively, after 100 cycles at 0.3 Ag -1 .

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