Spraying coagulation-assisted hydrothermal synthesis of MoS2/carbon/graphene composite microspheres for lithium-ion battery applications

Liu, Jine, Fu, Aiping, Wang, Yiqian, Guo, Peizhi, Feng, Hongbin, Li, Hongliang and Zhao, Xiu Song (2017) Spraying coagulation-assisted hydrothermal synthesis of MoS2/carbon/graphene composite microspheres for lithium-ion battery applications. ChemElectroChem, 4 8: 2027-2036. doi:10.1002/celc.201600769


Author Liu, Jine
Fu, Aiping
Wang, Yiqian
Guo, Peizhi
Feng, Hongbin
Li, Hongliang
Zhao, Xiu Song
Title Spraying coagulation-assisted hydrothermal synthesis of MoS2/carbon/graphene composite microspheres for lithium-ion battery applications
Formatted title
Spraying coagulation-assisted hydrothermal synthesis of MoS2/carbon/graphene composite microspheres for lithium-ion battery applications
Journal name ChemElectroChem   Check publisher's open access policy
ISSN 2196-0216
Publication date 2017-02-15
Year available 2017
Sub-type Article (original research)
DOI 10.1002/celc.201600769
Open Access Status Not yet assessed
Volume 4
Issue 8
Start page 2027
End page 2036
Total pages 11
Place of publication Weinheim, Germany
Publisher Wiley - V C H Verlag GmbH & Co. KGaA
Language eng
Subject 1503 Catalysis
1603 Electrochemistry
Abstract Composite microspheres consisting of molybdenum disulfide, amorphous carbon, and reduced graphene oxide (named MoS-AC-RGO) were prepared by using a hydrothermal approach combined with the spraying coagulation process and calcinations step. Intercalation compound cellulose−MoS was obtained after the spraying coagulation-assisted hydrothermal treatment, which then converts to MoS-AC-RGO after calcination. Graphene oxide and cellulose were utilized as the precursors of RGO and AC, respectively. Thiourea was adopted as both the species for cellulose dissolution and the sulfur precursor for MoS. The suspension of GO and sodium molybdate also played the role of the coagulation bath. The influence of cellulose on the structure, morphology, and electrochemical performance of the resultant MoS-AC-RGO microspheres was investigated based on XRD, SEM, TEM, Raman spectra, TGA, and N adsorption−desorption technique as well as electrochemical measurements. The composite microspheres show superior electrochemical properties as anode materials for lithium-ion batteries and exhibit a high reversible capacity of 910 mAhg at a current density of 200 mA g, excellent rate capability, and superior cyclic stability with a capacity of 86% after 70 cycles. The roles of the graphene and the cellulose in improving the electrochemical properties of the MoS-AC-RGO composites are discussed based on the morphology, structure, phase, and electrochemical performance studies.
Formatted abstract
Composite microspheres consisting of molybdenum disulfide, amorphous carbon, and reduced graphene oxide (named MoS2-AC-RGO) were prepared by using a hydrothermal approach combined with the spraying coagulation process and calcinations step. Intercalation compound cellulose-MoS2 was obtained after the spraying coagulation-assisted hydrothermal treatment, which then converts to MoS2-AC-RGO after calcination. Graphene oxide and cellulose were utilized as the precursors of RGO and AC, respectively. Thiourea was adopted as both the species for cellulose dissolution and the sulfur precursor for MoS2. The suspension of GO and sodium molybdate also played the role of the coagulation bath. The influence of cellulose on the structure, morphology, and electrochemical performance of the resultant MoS2-AC-RGO microspheres was investigated based on XRD, SEM, TEM, Raman spectra, TGA, and N2 adsorption-desorption technique as well as electrochemical measurements. The composite microspheres show superior electrochemical properties as anode materials for lithium-ion batteries and exhibit a high reversible capacity of 910mAhg-1 at a current density of 200mAg-1, excellent rate capability, and superior cyclic stability with a capacity of 86% after 70 cycles. The roles of the graphene and the cellulose in improving the electrochemical properties of the MoS2-AC-RGO composites are discussed based on the morphology, structure, phase, and electrochemical performance studies.
Keyword Cellulose
Graphene
Lithium-ion batteries
Molybdenum disulfide
Spraying coagulation
Q-Index Code C1
Q-Index Status Provisional Code
Grant ID 2012CB722705
2014AA250323
2013BAG26B02
21501172
2015T80120
13-CX-8
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Chemical Engineering Publications
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