Electrodeposited three-dimensional porous Si-O-C/Ni thick film as high performance anode for lithium-ion batteries

Xin Qian, Tao Hang, Hiroki Nara, Tokihiko Yokoshima, Ming Li, Tetsuya Osaka

研究成果: Article

12 引用 (Scopus)

抄録

A novel 3D porous Si-O-C/Ni thick film anode is successfully prepared by electrodeposition of porous Ni on Cu substrate and galvanostatical electrodeposition of Si-O-C composite on porous Ni substrate. The 3D porous Si-O-C/Ni thick film is electrochemically activated at a current density of 50 μA cm-2 for the first cycle and 200 μA cm-2 (0.5 C) for the subsequent cycles, it displays superior electrochemical performance with discharge capacity of 706.3 mAh g-1 of Si after 100 cycles. The properties of this thick film is analyzed by field emission scanning electron microscopy (FESEM) and scanning transmission electron microscopy with energy dispersive X-ray analyzer (STEM-EDX). The results show that Si-O-C composite not only covers the surface area of porous Ni but also attaches to the highly porous dendritic walls, along with the porous structure of Ni which provides proper accommodation for the volume change of silicon during the lithiation/delithiation processes, are believed to result in the high capacity and excellent cyclability.

元の言語English
ページ(範囲)794-799
ページ数6
ジャーナルJournal of Power Sources
272
DOI
出版物ステータスPublished - 2014 12 25

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Thick films
thick films
electric batteries
Anodes
anodes
lithium
Electrodeposition
electrodeposition
cycles
ions
Scanning electron microscopy
scanning electron microscopy
composite materials
accommodation
Composite materials
Silicon
Substrates
Field emission
field emission
analyzers

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

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title = "Electrodeposited three-dimensional porous Si-O-C/Ni thick film as high performance anode for lithium-ion batteries",
abstract = "A novel 3D porous Si-O-C/Ni thick film anode is successfully prepared by electrodeposition of porous Ni on Cu substrate and galvanostatical electrodeposition of Si-O-C composite on porous Ni substrate. The 3D porous Si-O-C/Ni thick film is electrochemically activated at a current density of 50 μA cm-2 for the first cycle and 200 μA cm-2 (0.5 C) for the subsequent cycles, it displays superior electrochemical performance with discharge capacity of 706.3 mAh g-1 of Si after 100 cycles. The properties of this thick film is analyzed by field emission scanning electron microscopy (FESEM) and scanning transmission electron microscopy with energy dispersive X-ray analyzer (STEM-EDX). The results show that Si-O-C composite not only covers the surface area of porous Ni but also attaches to the highly porous dendritic walls, along with the porous structure of Ni which provides proper accommodation for the volume change of silicon during the lithiation/delithiation processes, are believed to result in the high capacity and excellent cyclability.",
keywords = "3D porous anode, Electrodeposition, Lithium-ion battery, Organic electrolyte, Si-O-C/Ni thick film",
author = "Xin Qian and Tao Hang and Hiroki Nara and Tokihiko Yokoshima and Ming Li and Tetsuya Osaka",
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T1 - Electrodeposited three-dimensional porous Si-O-C/Ni thick film as high performance anode for lithium-ion batteries

AU - Qian, Xin

AU - Hang, Tao

AU - Nara, Hiroki

AU - Yokoshima, Tokihiko

AU - Li, Ming

AU - Osaka, Tetsuya

PY - 2014/12/25

Y1 - 2014/12/25

N2 - A novel 3D porous Si-O-C/Ni thick film anode is successfully prepared by electrodeposition of porous Ni on Cu substrate and galvanostatical electrodeposition of Si-O-C composite on porous Ni substrate. The 3D porous Si-O-C/Ni thick film is electrochemically activated at a current density of 50 μA cm-2 for the first cycle and 200 μA cm-2 (0.5 C) for the subsequent cycles, it displays superior electrochemical performance with discharge capacity of 706.3 mAh g-1 of Si after 100 cycles. The properties of this thick film is analyzed by field emission scanning electron microscopy (FESEM) and scanning transmission electron microscopy with energy dispersive X-ray analyzer (STEM-EDX). The results show that Si-O-C composite not only covers the surface area of porous Ni but also attaches to the highly porous dendritic walls, along with the porous structure of Ni which provides proper accommodation for the volume change of silicon during the lithiation/delithiation processes, are believed to result in the high capacity and excellent cyclability.

AB - A novel 3D porous Si-O-C/Ni thick film anode is successfully prepared by electrodeposition of porous Ni on Cu substrate and galvanostatical electrodeposition of Si-O-C composite on porous Ni substrate. The 3D porous Si-O-C/Ni thick film is electrochemically activated at a current density of 50 μA cm-2 for the first cycle and 200 μA cm-2 (0.5 C) for the subsequent cycles, it displays superior electrochemical performance with discharge capacity of 706.3 mAh g-1 of Si after 100 cycles. The properties of this thick film is analyzed by field emission scanning electron microscopy (FESEM) and scanning transmission electron microscopy with energy dispersive X-ray analyzer (STEM-EDX). The results show that Si-O-C composite not only covers the surface area of porous Ni but also attaches to the highly porous dendritic walls, along with the porous structure of Ni which provides proper accommodation for the volume change of silicon during the lithiation/delithiation processes, are believed to result in the high capacity and excellent cyclability.

KW - 3D porous anode

KW - Electrodeposition

KW - Lithium-ion battery

KW - Organic electrolyte

KW - Si-O-C/Ni thick film

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