Formation and characterization of Cu-Si nanocomposite electrodes for rechargeable Li batteries

Hyo Jin Ahn; Youn Su Kim; Won Bae Kim; Yung Eun Sung; Tae Yeon Seong

doi:10.1016/j.jpowsour.2005.12.077

Formation and characterization of Cu-Si nanocomposite electrodes for rechargeable Li batteries

Hyo Jin Ahn, Youn Su Kim, Won Bae Kim, Yung Eun Sung, Tae Yeon Seong

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

34 Citations (Scopus)

Abstract

We have investigated the structural and electrochemical properties of Cu-Si nanocomposite electrode fabricated by co-sputtering method. Reversible capacity of an amorphous Si electrode is degraded continuously with increasing cycle number up to 40 cycles. However, a Cu-Si nanocomposite electrode, where Cu nano-dots are embedded in an amorphous Si matrix, shows an excellent reversible capacity with a stable value of ca. 400 μA h cm^-2 μm^-1 up to 40 cycles. The improved reversible capacity of the Cu-Si nanocomposite electrodes is attributed to the enhanced structural stability of the electrodes due to the presence of the Cu nano-dots evenly distributed throughout the Si matrix.

Original language	English
Pages (from-to)	211-214
Number of pages	4
Journal	Journal of Power Sources
Volume	163
Issue number	1 SPEC. ISS.
DOIs	https://doi.org/10.1016/j.jpowsour.2005.12.077
Publication status	Published - 2006 Dec 7

Bibliographical note

Funding Information:
This work was supported by the Brain Korea 21 Project from the Ministry of Education (Korea). One (YES) of the authors acknowledges a financial support by Korea Research Foundation (Grant no. KRF-2004-005-00064).

Keywords

Capacity
Co-sputtering
Cu-Si
Cycling performance
Li batteries
Nanocomposite

ASJC Scopus subject areas

Renewable Energy, Sustainability and the Environment
Energy Engineering and Power Technology
Physical and Theoretical Chemistry
Electrical and Electronic Engineering

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.jpowsour.2005.12.077

Cite this

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title = "Formation and characterization of Cu-Si nanocomposite electrodes for rechargeable Li batteries",

abstract = "We have investigated the structural and electrochemical properties of Cu-Si nanocomposite electrode fabricated by co-sputtering method. Reversible capacity of an amorphous Si electrode is degraded continuously with increasing cycle number up to 40 cycles. However, a Cu-Si nanocomposite electrode, where Cu nano-dots are embedded in an amorphous Si matrix, shows an excellent reversible capacity with a stable value of ca. 400 μA h cm-2 μm-1 up to 40 cycles. The improved reversible capacity of the Cu-Si nanocomposite electrodes is attributed to the enhanced structural stability of the electrodes due to the presence of the Cu nano-dots evenly distributed throughout the Si matrix.",

keywords = "Capacity, Co-sputtering, Cu-Si, Cycling performance, Li batteries, Nanocomposite",

author = "Ahn, {Hyo Jin} and Kim, {Youn Su} and Kim, {Won Bae} and Sung, {Yung Eun} and Seong, {Tae Yeon}",

note = "Funding Information: This work was supported by the Brain Korea 21 Project from the Ministry of Education (Korea). One (YES) of the authors acknowledges a financial support by Korea Research Foundation (Grant no. KRF-2004-005-00064).",

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T1 - Formation and characterization of Cu-Si nanocomposite electrodes for rechargeable Li batteries

AU - Ahn, Hyo Jin

AU - Kim, Youn Su

AU - Kim, Won Bae

AU - Sung, Yung Eun

AU - Seong, Tae Yeon

N1 - Funding Information: This work was supported by the Brain Korea 21 Project from the Ministry of Education (Korea). One (YES) of the authors acknowledges a financial support by Korea Research Foundation (Grant no. KRF-2004-005-00064).

PY - 2006/12/7

Y1 - 2006/12/7

N2 - We have investigated the structural and electrochemical properties of Cu-Si nanocomposite electrode fabricated by co-sputtering method. Reversible capacity of an amorphous Si electrode is degraded continuously with increasing cycle number up to 40 cycles. However, a Cu-Si nanocomposite electrode, where Cu nano-dots are embedded in an amorphous Si matrix, shows an excellent reversible capacity with a stable value of ca. 400 μA h cm-2 μm-1 up to 40 cycles. The improved reversible capacity of the Cu-Si nanocomposite electrodes is attributed to the enhanced structural stability of the electrodes due to the presence of the Cu nano-dots evenly distributed throughout the Si matrix.

AB - We have investigated the structural and electrochemical properties of Cu-Si nanocomposite electrode fabricated by co-sputtering method. Reversible capacity of an amorphous Si electrode is degraded continuously with increasing cycle number up to 40 cycles. However, a Cu-Si nanocomposite electrode, where Cu nano-dots are embedded in an amorphous Si matrix, shows an excellent reversible capacity with a stable value of ca. 400 μA h cm-2 μm-1 up to 40 cycles. The improved reversible capacity of the Cu-Si nanocomposite electrodes is attributed to the enhanced structural stability of the electrodes due to the presence of the Cu nano-dots evenly distributed throughout the Si matrix.

KW - Capacity

KW - Co-sputtering

KW - Cu-Si

KW - Cycling performance

KW - Li batteries

KW - Nanocomposite

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U2 - 10.1016/j.jpowsour.2005.12.077

DO - 10.1016/j.jpowsour.2005.12.077

M3 - Article

AN - SCOPUS:33947600094

SN - 0378-7753

VL - 163

SP - 211

EP - 214

JO - Journal of Power Sources

JF - Journal of Power Sources

IS - 1 SPEC. ISS.

ER -

Formation and characterization of Cu-Si nanocomposite electrodes for rechargeable Li batteries

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

UN SDGs

Access to Document

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