Abstract
Nanostructured, multicomponent metal sulfides have recently attracted much attention as anode materials for high-performance sodium ion batteries (SIBs). Therefore, a simple strategy for constructing rationally designed multicomponent metal sulfide-based nanostructures is needed. Herein, we propose a metal-organic framework-based (MOF) strategy to construct human backbone-like CoMoS3 nanostructures with multiple voids as high-performance SIB anodes. This strategy involves conformal coating of a Co-based MOF onto the surface of MoO3 nanobelts, followed by sulfidation of the hybrids. We explore not only the optimized conditions for uniform ZIF-67 coating on the MoO3 nanobelts, but also the transformation mechanism of the MoO3@ZIF-67 hybrids into CoMoS3 nanobackbones with multiple voids. To further improve the structural stability, the nanobackbones were coated with polydopamine and then thermally treated under inert conditions, resulting in the formation of CoMoS3@N-doped carbon (NC) nanobackbones. Benefiting from their unique structural design, conductive carbon shells, and synergistic effects between multiple components, the CoMoS3@NC nanobackbones exhibit enhanced electrochemical performance when tested as anode materials for SIBs. They deliver a reversible capacity of 411 mA h g-1 for 300 cycles at a current density of 2 A g-1, and an excellent rate performance of 349 mA h g-1 at a current density of 10 A g-1. This simple strategy can be used to fabricate other multicomponent metal sulfide/carbon composites with multiple voids, which can be used for various applications.
| Original language | English |
|---|---|
| Pages (from-to) | 13751-13761 |
| Number of pages | 11 |
| Journal | Journal of Materials Chemistry A |
| Volume | 7 |
| Issue number | 22 |
| DOIs | |
| Publication status | Published - 2019 Jan 1 |
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ASJC Scopus subject areas
- Chemistry(all)
- Renewable Energy, Sustainability and the Environment
- Materials Science(all)
Cite this
A MOF-mediated strategy for constructing human backbone-like CoMoS3@N-doped carbon nanostructures with multiple voids as a superior anode for sodium-ion batteries. / Yang, Su Hyun; Park, Seung Keun; Kim, Jin Koo; Kang, Yun Chan.
In: Journal of Materials Chemistry A, Vol. 7, No. 22, 01.01.2019, p. 13751-13761.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - A MOF-mediated strategy for constructing human backbone-like CoMoS3@N-doped carbon nanostructures with multiple voids as a superior anode for sodium-ion batteries
AU - Yang, Su Hyun
AU - Park, Seung Keun
AU - Kim, Jin Koo
AU - Kang, Yun Chan
PY - 2019/1/1
Y1 - 2019/1/1
N2 - Nanostructured, multicomponent metal sulfides have recently attracted much attention as anode materials for high-performance sodium ion batteries (SIBs). Therefore, a simple strategy for constructing rationally designed multicomponent metal sulfide-based nanostructures is needed. Herein, we propose a metal-organic framework-based (MOF) strategy to construct human backbone-like CoMoS3 nanostructures with multiple voids as high-performance SIB anodes. This strategy involves conformal coating of a Co-based MOF onto the surface of MoO3 nanobelts, followed by sulfidation of the hybrids. We explore not only the optimized conditions for uniform ZIF-67 coating on the MoO3 nanobelts, but also the transformation mechanism of the MoO3@ZIF-67 hybrids into CoMoS3 nanobackbones with multiple voids. To further improve the structural stability, the nanobackbones were coated with polydopamine and then thermally treated under inert conditions, resulting in the formation of CoMoS3@N-doped carbon (NC) nanobackbones. Benefiting from their unique structural design, conductive carbon shells, and synergistic effects between multiple components, the CoMoS3@NC nanobackbones exhibit enhanced electrochemical performance when tested as anode materials for SIBs. They deliver a reversible capacity of 411 mA h g-1 for 300 cycles at a current density of 2 A g-1, and an excellent rate performance of 349 mA h g-1 at a current density of 10 A g-1. This simple strategy can be used to fabricate other multicomponent metal sulfide/carbon composites with multiple voids, which can be used for various applications.
AB - Nanostructured, multicomponent metal sulfides have recently attracted much attention as anode materials for high-performance sodium ion batteries (SIBs). Therefore, a simple strategy for constructing rationally designed multicomponent metal sulfide-based nanostructures is needed. Herein, we propose a metal-organic framework-based (MOF) strategy to construct human backbone-like CoMoS3 nanostructures with multiple voids as high-performance SIB anodes. This strategy involves conformal coating of a Co-based MOF onto the surface of MoO3 nanobelts, followed by sulfidation of the hybrids. We explore not only the optimized conditions for uniform ZIF-67 coating on the MoO3 nanobelts, but also the transformation mechanism of the MoO3@ZIF-67 hybrids into CoMoS3 nanobackbones with multiple voids. To further improve the structural stability, the nanobackbones were coated with polydopamine and then thermally treated under inert conditions, resulting in the formation of CoMoS3@N-doped carbon (NC) nanobackbones. Benefiting from their unique structural design, conductive carbon shells, and synergistic effects between multiple components, the CoMoS3@NC nanobackbones exhibit enhanced electrochemical performance when tested as anode materials for SIBs. They deliver a reversible capacity of 411 mA h g-1 for 300 cycles at a current density of 2 A g-1, and an excellent rate performance of 349 mA h g-1 at a current density of 10 A g-1. This simple strategy can be used to fabricate other multicomponent metal sulfide/carbon composites with multiple voids, which can be used for various applications.
UR - http://www.scopus.com/inward/record.url?scp=85066877427&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85066877427&partnerID=8YFLogxK
U2 - 10.1039/c9ta03873f
DO - 10.1039/c9ta03873f
M3 - Article
AN - SCOPUS:85066877427
VL - 7
SP - 13751
EP - 13761
JO - Journal of Materials Chemistry A
JF - Journal of Materials Chemistry A
SN - 2050-7488
IS - 22
ER -