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

^*Corresponding author for this work

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

35 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).

UN SDGs

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

SDG 7 Affordable and Clean Energy

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

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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).",

year = "2006",

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doi = "10.1016/j.jpowsour.2005.12.077",

language = "English",

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pages = "211--214",

journal = "Journal of Power Sources",

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TY - JOUR

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

UR - https://www.scopus.com/pages/publications/33947600094

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

UN SDGs

Keywords

ASJC Scopus subject areas

Access to Document

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