抄録
The electrodeposited Sn-O-C composite anode cycling with LiClO4 delivered stable cycle performances showing discharge capacity of 473 mA h g of Sn -1 with 95% of coulombic efficiency at 100th cycle. However, the anode showed poor cycle performances with LiPF6 delivering discharge capacity of 69 mA h g of Sn -1 at 100th cycle with 70% of coulombic efficiency. Electrochemical investigation performed by cyclic voltammetry and differential capacity plots revealed that the Sn-O-C composite cycling with LiPF6 suffered from retarded phase transition reaction between Li and Sn during charge/discharge process. X-ray photoelectron spectroscopy declared the existence of fluorinated-Sn and LiF. Moreover, energy dispersive X-ray spectroscopy found increase in their amount with repeated cycles. The morphologies of the Sn-O-C composite cycled with LiPF6 showed aggregated particles containing the chemical state of fluorinated-Sn and LiF on its surface. Furthermore, the significant pulverization and aggregation of the active material were observed from the Sn-O-C composite cycled by LiPF6 rather than that of LiClO4, which was probably promoted by the generated HF strongly corroding metallic component.
| 元の言語 | English |
|---|---|
| ページ（範囲） | 525-530 |
| ページ数 | 6 |
| ジャーナル | Journal of Power Sources |
| 巻 | 275 |
| DOI | |
| 出版物ステータス | Published - 2015 2 1 |
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ASJC Scopus subject areas
- Electrical and Electronic Engineering
- Energy Engineering and Power Technology
- Renewable Energy, Sustainability and the Environment
- Physical and Theoretical Chemistry
これを引用
Effect of electrolyte on cycle performances of the electrodeposited Sn-O-C composite anode of lithium secondary batteries. / Jeong, Moongook; Yokoshima, Tokihiko; Nara, Hiroki; Momma, Toshiyuki; Osaka, Tetsuya.
：: Journal of Power Sources, 巻 275, 01.02.2015, p. 525-530.研究成果: Article
}
TY - JOUR
T1 - Effect of electrolyte on cycle performances of the electrodeposited Sn-O-C composite anode of lithium secondary batteries
AU - Jeong, Moongook
AU - Yokoshima, Tokihiko
AU - Nara, Hiroki
AU - Momma, Toshiyuki
AU - Osaka, Tetsuya
PY - 2015/2/1
Y1 - 2015/2/1
N2 - The electrodeposited Sn-O-C composite anode cycling with LiClO4 delivered stable cycle performances showing discharge capacity of 473 mA h g of Sn -1 with 95% of coulombic efficiency at 100th cycle. However, the anode showed poor cycle performances with LiPF6 delivering discharge capacity of 69 mA h g of Sn -1 at 100th cycle with 70% of coulombic efficiency. Electrochemical investigation performed by cyclic voltammetry and differential capacity plots revealed that the Sn-O-C composite cycling with LiPF6 suffered from retarded phase transition reaction between Li and Sn during charge/discharge process. X-ray photoelectron spectroscopy declared the existence of fluorinated-Sn and LiF. Moreover, energy dispersive X-ray spectroscopy found increase in their amount with repeated cycles. The morphologies of the Sn-O-C composite cycled with LiPF6 showed aggregated particles containing the chemical state of fluorinated-Sn and LiF on its surface. Furthermore, the significant pulverization and aggregation of the active material were observed from the Sn-O-C composite cycled by LiPF6 rather than that of LiClO4, which was probably promoted by the generated HF strongly corroding metallic component.
AB - The electrodeposited Sn-O-C composite anode cycling with LiClO4 delivered stable cycle performances showing discharge capacity of 473 mA h g of Sn -1 with 95% of coulombic efficiency at 100th cycle. However, the anode showed poor cycle performances with LiPF6 delivering discharge capacity of 69 mA h g of Sn -1 at 100th cycle with 70% of coulombic efficiency. Electrochemical investigation performed by cyclic voltammetry and differential capacity plots revealed that the Sn-O-C composite cycling with LiPF6 suffered from retarded phase transition reaction between Li and Sn during charge/discharge process. X-ray photoelectron spectroscopy declared the existence of fluorinated-Sn and LiF. Moreover, energy dispersive X-ray spectroscopy found increase in their amount with repeated cycles. The morphologies of the Sn-O-C composite cycled with LiPF6 showed aggregated particles containing the chemical state of fluorinated-Sn and LiF on its surface. Furthermore, the significant pulverization and aggregation of the active material were observed from the Sn-O-C composite cycled by LiPF6 rather than that of LiClO4, which was probably promoted by the generated HF strongly corroding metallic component.
KW - Anode
KW - Electrodeposition
KW - Electrolyte
KW - Lithium secondary batteries
KW - Sn-O-C composite
KW - Tin
UR - http://www.scopus.com/inward/record.url?scp=84911950211&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84911950211&partnerID=8YFLogxK
U2 - 10.1016/j.jpowsour.2014.11.008
DO - 10.1016/j.jpowsour.2014.11.008
M3 - Article
AN - SCOPUS:84911950211
VL - 275
SP - 525
EP - 530
JO - Journal of Power Sources
JF - Journal of Power Sources
SN - 0378-7753
ER -