TY - JOUR
T1 - Sodium-ion storage performances of MoS2 nanocrystals coated with N-doped carbon synthesized by flame spray pyrolysis
AU - Kim, Ju Hyeong
AU - Kim, Jin Koo
AU - Kang, Yun Chan
N1 - Funding Information:
This research was supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education (NRF-2019R1A2C2088047).
Publisher Copyright:
© 2020 Elsevier B.V.
PY - 2020/9/1
Y1 - 2020/9/1
N2 - Transition metal dichalcogenides (TMDCs) are receiving significant research interest as anode materials for sodium-ion batteries (SIBs). In light of this, vigorous efforts have been devoted to the nano-manufacturing of TMDC-based materials, as they promote better electrochemical performances. Simultaneously, effective production strategies of TMDC-based nanomaterials have been widely explored. Here, we report the facile synthesis of MoS2 nanoparticles coated with N-doped carbon shells (MoS2@NC) for SIB anodes. Flame-spray pyrolysis was employed to produce MoO3 nanoparticles, which were then transformed into MoS2 nanoparticles by a sulfidation process and coated with N-doped carbon shells by dopamine polymerization and carbonization. Benefiting from enhanced structural robustness and electrical conductivity as a result of the uniform N-doped carbon coating, the resulting MoS2@NC exhibits superior sodium-ion storage performance compared with that of bare MoS2 nanoparticles. The proposed strategy is expected to provide new methodologies for the facile synthesis of various metal-chalcogenide/carbon composite nanoparticles for energy storage applications.
AB - Transition metal dichalcogenides (TMDCs) are receiving significant research interest as anode materials for sodium-ion batteries (SIBs). In light of this, vigorous efforts have been devoted to the nano-manufacturing of TMDC-based materials, as they promote better electrochemical performances. Simultaneously, effective production strategies of TMDC-based nanomaterials have been widely explored. Here, we report the facile synthesis of MoS2 nanoparticles coated with N-doped carbon shells (MoS2@NC) for SIB anodes. Flame-spray pyrolysis was employed to produce MoO3 nanoparticles, which were then transformed into MoS2 nanoparticles by a sulfidation process and coated with N-doped carbon shells by dopamine polymerization and carbonization. Benefiting from enhanced structural robustness and electrical conductivity as a result of the uniform N-doped carbon coating, the resulting MoS2@NC exhibits superior sodium-ion storage performance compared with that of bare MoS2 nanoparticles. The proposed strategy is expected to provide new methodologies for the facile synthesis of various metal-chalcogenide/carbon composite nanoparticles for energy storage applications.
KW - Energy storage materials
KW - Flame spray pyrolysis
KW - N-doped carbon
KW - Sodium-ion batteries
KW - Transition metal dichalcogenides
UR - http://www.scopus.com/inward/record.url?scp=85084056869&partnerID=8YFLogxK
U2 - 10.1016/j.apsusc.2020.146470
DO - 10.1016/j.apsusc.2020.146470
M3 - Article
AN - SCOPUS:85084056869
SN - 0169-4332
VL - 523
JO - Applied Surface Science
JF - Applied Surface Science
M1 - 146470
ER -