Abstract
In this study, onion-like crystalline WS2 nanoparticles uniformly anchored on graphene sheets (WS2@Gs) were prepared via ball milling using WO3 nanoparticles and graphene and subsequent sulfidation. They were then employed as high-performance anode materials for Li-ion batteries (LIBs). The ball-milling process facilitated uniform anchoring of WO3 nanoparticles with a diameter of ∼15 nm on graphene nanosheets without aggregation, and the subsequent sulfidation caused phase transition of the WO3 nanoparticles to WS2 nanoparticles with an onion-like crystal lattice structure. As anode materials for LIB, the uniquely structured WS2@Gs nanocomposites exhibited excellent Li-ions storage performance, with a high reversible capacity of 587.1 mA h g−1 at a current density of 200 mA g−1. To enhance the cyclic stability of WS2@Gs, the C-coating method was employed by simply adding glucose during ball milling. Even at a high current density of 1000 mA g−1, the C-coated WS2@Gs (C@WS2@Gs) electrode exhibited a remarkably high reversible capacity of 371.9 mA h g−1 and appreciable cycling stability, with a high capacity retention of 62% without any drastic capacity fading after 500 cycles.
| Original language | English |
|---|---|
| Article number | 122033 |
| Journal | Chemical Engineering Journal |
| Volume | 375 |
| DOIs | |
| Publication status | Published - 2019 Nov 1 |
Fingerprint
Keywords
- Carbon coating
- Electrical explosion of wire process
- Lithium-ion battery
- Nanocomposite
- Tungsten disulfide
ASJC Scopus subject areas
- Chemistry(all)
- Environmental Chemistry
- Chemical Engineering(all)
- Industrial and Manufacturing Engineering
Cite this
Onion-like crystalline WS2 nanoparticles anchored on graphene sheets as high-performance anode materials for lithium-ion batteries. / Kim, Inha; Park, Sung Woo; Kim, Dong-Wan.
In: Chemical Engineering Journal, Vol. 375, 122033, 01.11.2019.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Onion-like crystalline WS2 nanoparticles anchored on graphene sheets as high-performance anode materials for lithium-ion batteries
AU - Kim, Inha
AU - Park, Sung Woo
AU - Kim, Dong-Wan
PY - 2019/11/1
Y1 - 2019/11/1
N2 - In this study, onion-like crystalline WS2 nanoparticles uniformly anchored on graphene sheets (WS2@Gs) were prepared via ball milling using WO3 nanoparticles and graphene and subsequent sulfidation. They were then employed as high-performance anode materials for Li-ion batteries (LIBs). The ball-milling process facilitated uniform anchoring of WO3 nanoparticles with a diameter of ∼15 nm on graphene nanosheets without aggregation, and the subsequent sulfidation caused phase transition of the WO3 nanoparticles to WS2 nanoparticles with an onion-like crystal lattice structure. As anode materials for LIB, the uniquely structured WS2@Gs nanocomposites exhibited excellent Li-ions storage performance, with a high reversible capacity of 587.1 mA h g−1 at a current density of 200 mA g−1. To enhance the cyclic stability of WS2@Gs, the C-coating method was employed by simply adding glucose during ball milling. Even at a high current density of 1000 mA g−1, the C-coated WS2@Gs (C@WS2@Gs) electrode exhibited a remarkably high reversible capacity of 371.9 mA h g−1 and appreciable cycling stability, with a high capacity retention of 62% without any drastic capacity fading after 500 cycles.
AB - In this study, onion-like crystalline WS2 nanoparticles uniformly anchored on graphene sheets (WS2@Gs) were prepared via ball milling using WO3 nanoparticles and graphene and subsequent sulfidation. They were then employed as high-performance anode materials for Li-ion batteries (LIBs). The ball-milling process facilitated uniform anchoring of WO3 nanoparticles with a diameter of ∼15 nm on graphene nanosheets without aggregation, and the subsequent sulfidation caused phase transition of the WO3 nanoparticles to WS2 nanoparticles with an onion-like crystal lattice structure. As anode materials for LIB, the uniquely structured WS2@Gs nanocomposites exhibited excellent Li-ions storage performance, with a high reversible capacity of 587.1 mA h g−1 at a current density of 200 mA g−1. To enhance the cyclic stability of WS2@Gs, the C-coating method was employed by simply adding glucose during ball milling. Even at a high current density of 1000 mA g−1, the C-coated WS2@Gs (C@WS2@Gs) electrode exhibited a remarkably high reversible capacity of 371.9 mA h g−1 and appreciable cycling stability, with a high capacity retention of 62% without any drastic capacity fading after 500 cycles.
KW - Carbon coating
KW - Electrical explosion of wire process
KW - Lithium-ion battery
KW - Nanocomposite
KW - Tungsten disulfide
UR - http://www.scopus.com/inward/record.url?scp=85067901847&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85067901847&partnerID=8YFLogxK
U2 - 10.1016/j.cej.2019.122033
DO - 10.1016/j.cej.2019.122033
M3 - Article
AN - SCOPUS:85067901847
VL - 375
JO - Chemical Engineering Journal
JF - Chemical Engineering Journal
SN - 1385-8947
M1 - 122033
ER -