Synergetic Effect of Yolk-Shell Structure and Uniform Mixing of SnS-MoS2 Nanocrystals for Improved Na-Ion Storage Capabilities

Seung Ho Choi; Yun Chan Kang

doi:10.1021/acsami.5b07093

Synergetic Effect of Yolk-Shell Structure and Uniform Mixing of SnS-MoS₂ Nanocrystals for Improved Na-Ion Storage Capabilities

Seung Ho Choi, Yun Chan Kang^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

109 Citations (Scopus)

Abstract

Mixed metal sulfide composite microspheres with a yolk-shell structure for sodium-ion batteries are studied. Tin-molybdenum oxide yolk-shell microspheres prepared by a one-pot spray pyrolysis process transform into yolk-shell SnS-MoS₂ composite microspheres. The discharge capacities of the yolk-shell and dense-structured SnS-MoS₂ composite microspheres for the 100th cycle are 396 and 207 mA h g^-1, and their capacity retentions measured from the second cycle are 89 and 47%, respectively. The yolk-shell SnS-MoS₂ composite microspheres with high structural stability during repeated sodium insertion and desertion processes have low charge-transfer resistance even after long-term cycling. The synergetic effect of the yolk-shell structure and uniform mixing of the SnS and MoS₂ nanocrystals result in the excellent sodium-ion storage properties of the yolk-shell SnS-MoS₂ composite microspheres by improving their structural stability during cycling.

Original language	English
Pages (from-to)	24694-24702
Number of pages	9
Journal	ACS Applied Materials and Interfaces
Volume	7
Issue number	44
DOIs	https://doi.org/10.1021/acsami.5b07093
Publication status	Published - 2015 Nov 11

Keywords

anode material
metal sulfide
nanostructure
sodium batteries
spray pyrolysis

ASJC Scopus subject areas

General Materials Science

Access to Document

10.1021/acsami.5b07093

Cite this

@article{339860f2910b4992b61ebd3495977e0b,

title = "Synergetic Effect of Yolk-Shell Structure and Uniform Mixing of SnS-MoS2 Nanocrystals for Improved Na-Ion Storage Capabilities",

abstract = "Mixed metal sulfide composite microspheres with a yolk-shell structure for sodium-ion batteries are studied. Tin-molybdenum oxide yolk-shell microspheres prepared by a one-pot spray pyrolysis process transform into yolk-shell SnS-MoS2 composite microspheres. The discharge capacities of the yolk-shell and dense-structured SnS-MoS2 composite microspheres for the 100th cycle are 396 and 207 mA h g-1, and their capacity retentions measured from the second cycle are 89 and 47\%, respectively. The yolk-shell SnS-MoS2 composite microspheres with high structural stability during repeated sodium insertion and desertion processes have low charge-transfer resistance even after long-term cycling. The synergetic effect of the yolk-shell structure and uniform mixing of the SnS and MoS2 nanocrystals result in the excellent sodium-ion storage properties of the yolk-shell SnS-MoS2 composite microspheres by improving their structural stability during cycling.",

keywords = "anode material, metal sulfide, nanostructure, sodium batteries, spray pyrolysis",

author = "Choi, \{Seung Ho\} and Kang, \{Yun Chan\}",

year = "2015",

month = nov,

day = "11",

doi = "10.1021/acsami.5b07093",

language = "English",

volume = "7",

pages = "24694--24702",

journal = "ACS Applied Materials and Interfaces",

issn = "1944-8244",

publisher = "American Chemical Society",

number = "44",

}

TY - JOUR

T1 - Synergetic Effect of Yolk-Shell Structure and Uniform Mixing of SnS-MoS2 Nanocrystals for Improved Na-Ion Storage Capabilities

AU - Choi, Seung Ho

AU - Kang, Yun Chan

PY - 2015/11/11

Y1 - 2015/11/11

N2 - Mixed metal sulfide composite microspheres with a yolk-shell structure for sodium-ion batteries are studied. Tin-molybdenum oxide yolk-shell microspheres prepared by a one-pot spray pyrolysis process transform into yolk-shell SnS-MoS2 composite microspheres. The discharge capacities of the yolk-shell and dense-structured SnS-MoS2 composite microspheres for the 100th cycle are 396 and 207 mA h g-1, and their capacity retentions measured from the second cycle are 89 and 47%, respectively. The yolk-shell SnS-MoS2 composite microspheres with high structural stability during repeated sodium insertion and desertion processes have low charge-transfer resistance even after long-term cycling. The synergetic effect of the yolk-shell structure and uniform mixing of the SnS and MoS2 nanocrystals result in the excellent sodium-ion storage properties of the yolk-shell SnS-MoS2 composite microspheres by improving their structural stability during cycling.

AB - Mixed metal sulfide composite microspheres with a yolk-shell structure for sodium-ion batteries are studied. Tin-molybdenum oxide yolk-shell microspheres prepared by a one-pot spray pyrolysis process transform into yolk-shell SnS-MoS2 composite microspheres. The discharge capacities of the yolk-shell and dense-structured SnS-MoS2 composite microspheres for the 100th cycle are 396 and 207 mA h g-1, and their capacity retentions measured from the second cycle are 89 and 47%, respectively. The yolk-shell SnS-MoS2 composite microspheres with high structural stability during repeated sodium insertion and desertion processes have low charge-transfer resistance even after long-term cycling. The synergetic effect of the yolk-shell structure and uniform mixing of the SnS and MoS2 nanocrystals result in the excellent sodium-ion storage properties of the yolk-shell SnS-MoS2 composite microspheres by improving their structural stability during cycling.

KW - anode material

KW - metal sulfide

KW - nanostructure

KW - sodium batteries

KW - spray pyrolysis

UR - https://www.scopus.com/pages/publications/84947093609

UR - https://www.scopus.com/inward/citedby.url?scp=84947093609&partnerID=8YFLogxK

U2 - 10.1021/acsami.5b07093

DO - 10.1021/acsami.5b07093

M3 - Article

AN - SCOPUS:84947093609

SN - 1944-8244

VL - 7

SP - 24694

EP - 24702

JO - ACS Applied Materials and Interfaces

JF - ACS Applied Materials and Interfaces

IS - 44

ER -