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Ultrasmall SnS Quantum Dots Anchored onto Nitrogen-Enriched Carbon Nanospheres as an Advanced Anode Material for Sodium-Ion Batteries.
ACS Appl Mater Interfaces. 2020 Feb 12; 12(6):7114-7124.AA

Abstract

Structural pulverization of metal chalcogenides such as Sn-based compounds is a serious issue for development of high-performance anode materials and results in serious capacity fading during continuous charge and discharge cycles. In this work, we synthesize ultrasmall SnS quantum dots (QDs) anchored onto nitrogen-enriched carbon (NC) nanospheres through facile hydrothermal and carbonization processes to prepare a progressive anode material for sodium-ion batteries. The optimized SnS QDs@NC electrode delivered an initial discharge capacity of 281 mAh g-1 at 100 mA g-1 and exhibited excellent cycling stability with a capacity retention of 75% after 500 cycles at a high current density of 1000 mA g-1. Ex situ XRD, XPS, FE-SEM, TEM measurements, and kinetics study were performed to unveil the sodium storage mechanism of the SnS QDs@NC electrode. A sodium-ion full cell assembled with an SnS QDs@NC anode and a Na3V2(PO4)3 cathode exhibited high capacity and good cycling stability. Such a superior electrochemical performance of SnS QDs@NC can be attributed to the synergistic effects of NC and SnS QDs where NC serves as a conducting matrix to support SnS QDs and helps avoid structural degradation. This work provides a promising strategy to resolve the pulverization issue of alloying and conversion-type anode materials.

Authors+Show Affiliations

Department of Chemical Engineering , Hanyang University , Seoul 04763 , Republic of Korea.Department of Chemical Engineering , Hanyang University , Seoul 04763 , Republic of Korea.Department of Chemical Engineering , Hanyang University , Seoul 04763 , Republic of Korea.Department of Chemical Engineering , Hanyang University , Seoul 04763 , Republic of Korea.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

31944653

Citation

Veerasubramani, Ganesh Kumar, et al. "Ultrasmall SnS Quantum Dots Anchored Onto Nitrogen-Enriched Carbon Nanospheres as an Advanced Anode Material for Sodium-Ion Batteries." ACS Applied Materials & Interfaces, vol. 12, no. 6, 2020, pp. 7114-7124.
Veerasubramani GK, Park MS, Choi JY, et al. Ultrasmall SnS Quantum Dots Anchored onto Nitrogen-Enriched Carbon Nanospheres as an Advanced Anode Material for Sodium-Ion Batteries. ACS Appl Mater Interfaces. 2020;12(6):7114-7124.
Veerasubramani, G. K., Park, M. S., Choi, J. Y., & Kim, D. W. (2020). Ultrasmall SnS Quantum Dots Anchored onto Nitrogen-Enriched Carbon Nanospheres as an Advanced Anode Material for Sodium-Ion Batteries. ACS Applied Materials & Interfaces, 12(6), 7114-7124. https://doi.org/10.1021/acsami.9b18997
Veerasubramani GK, et al. Ultrasmall SnS Quantum Dots Anchored Onto Nitrogen-Enriched Carbon Nanospheres as an Advanced Anode Material for Sodium-Ion Batteries. ACS Appl Mater Interfaces. 2020 Feb 12;12(6):7114-7124. PubMed PMID: 31944653.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Ultrasmall SnS Quantum Dots Anchored onto Nitrogen-Enriched Carbon Nanospheres as an Advanced Anode Material for Sodium-Ion Batteries. AU - Veerasubramani,Ganesh Kumar, AU - Park,Myung-Soo, AU - Choi,Jin-Yi, AU - Kim,Dong-Won, Y1 - 2020/01/29/ PY - 2020/1/17/pubmed PY - 2020/1/17/medline PY - 2020/1/17/entrez KW - SnS quantum dot KW - anode material KW - carbon nanosphere KW - energy storage KW - sodium-ion battery SP - 7114 EP - 7124 JF - ACS applied materials & interfaces JO - ACS Appl Mater Interfaces VL - 12 IS - 6 N2 - Structural pulverization of metal chalcogenides such as Sn-based compounds is a serious issue for development of high-performance anode materials and results in serious capacity fading during continuous charge and discharge cycles. In this work, we synthesize ultrasmall SnS quantum dots (QDs) anchored onto nitrogen-enriched carbon (NC) nanospheres through facile hydrothermal and carbonization processes to prepare a progressive anode material for sodium-ion batteries. The optimized SnS QDs@NC electrode delivered an initial discharge capacity of 281 mAh g-1 at 100 mA g-1 and exhibited excellent cycling stability with a capacity retention of 75% after 500 cycles at a high current density of 1000 mA g-1. Ex situ XRD, XPS, FE-SEM, TEM measurements, and kinetics study were performed to unveil the sodium storage mechanism of the SnS QDs@NC electrode. A sodium-ion full cell assembled with an SnS QDs@NC anode and a Na3V2(PO4)3 cathode exhibited high capacity and good cycling stability. Such a superior electrochemical performance of SnS QDs@NC can be attributed to the synergistic effects of NC and SnS QDs where NC serves as a conducting matrix to support SnS QDs and helps avoid structural degradation. This work provides a promising strategy to resolve the pulverization issue of alloying and conversion-type anode materials. SN - 1944-8252 UR - https://www.unboundmedicine.com/medline/citation/31944653/Ultrasmall_SnS_Quantum_Dots_Anchored_onto_Nitrogen_Enriched_Carbon_Nanospheres_as_an_Advanced_Anode_Material_for_Sodium_Ion_Batteries_ L2 - https://dx.doi.org/10.1021/acsami.9b18997 DB - PRIME DP - Unbound Medicine ER -
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