Modified SiO as a high performance anode for Li-ion batteries

Yoon Hwa; Cheol Min Park; Hun Joon Sohn

doi:10.1016/j.jpowsour.2012.08.060

Modified SiO as a high performance anode for Li-ion batteries

Yoon Hwa, Cheol Min Park, Hun Joon Sohn

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

178 Scopus citations

Abstract

An anode material with improved electrochemical performances for Li-ion batteries is prepared using the disproportionation reaction of SiO followed by a high energy mechanical milling process. The modified SiO is composed of embedded Si nano-crystallites in a Si-oxide matrix. Si-oxide matrix could be divided into two parts by reactivity with Li-ion. The inactive Si-suboxide matrix would buffer the volume expansion of embedded Si nano-crystallites and active amorphous SiO₂ during the lithiation. This modified SiO electrode shows a large reversible capacity, close to 1000 mAh g^-1, and good cyclability, over 50 cycles.

Original language	English (US)
Pages (from-to)	129-134
Number of pages	6
Journal	Journal of Power Sources
Volume	222
DOIs	https://doi.org/10.1016/j.jpowsour.2012.08.060
State	Published - 2013
Externally published	Yes

Keywords

Anode
Disproportionation reaction
Lithium ion battery
Silicon monoxide

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.2012.08.060

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title = "Modified SiO as a high performance anode for Li-ion batteries",

abstract = "An anode material with improved electrochemical performances for Li-ion batteries is prepared using the disproportionation reaction of SiO followed by a high energy mechanical milling process. The modified SiO is composed of embedded Si nano-crystallites in a Si-oxide matrix. Si-oxide matrix could be divided into two parts by reactivity with Li-ion. The inactive Si-suboxide matrix would buffer the volume expansion of embedded Si nano-crystallites and active amorphous SiO2 during the lithiation. This modified SiO electrode shows a large reversible capacity, close to 1000 mAh g-1, and good cyclability, over 50 cycles.",

keywords = "Anode, Disproportionation reaction, Lithium ion battery, Silicon monoxide",

author = "Yoon Hwa and Park, {Cheol Min} and Sohn, {Hun Joon}",

year = "2013",

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language = "English (US)",

volume = "222",

pages = "129--134",

journal = "Journal of Power Sources",

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T1 - Modified SiO as a high performance anode for Li-ion batteries

AU - Hwa, Yoon

AU - Park, Cheol Min

AU - Sohn, Hun Joon

PY - 2013

Y1 - 2013

N2 - An anode material with improved electrochemical performances for Li-ion batteries is prepared using the disproportionation reaction of SiO followed by a high energy mechanical milling process. The modified SiO is composed of embedded Si nano-crystallites in a Si-oxide matrix. Si-oxide matrix could be divided into two parts by reactivity with Li-ion. The inactive Si-suboxide matrix would buffer the volume expansion of embedded Si nano-crystallites and active amorphous SiO2 during the lithiation. This modified SiO electrode shows a large reversible capacity, close to 1000 mAh g-1, and good cyclability, over 50 cycles.

AB - An anode material with improved electrochemical performances for Li-ion batteries is prepared using the disproportionation reaction of SiO followed by a high energy mechanical milling process. The modified SiO is composed of embedded Si nano-crystallites in a Si-oxide matrix. Si-oxide matrix could be divided into two parts by reactivity with Li-ion. The inactive Si-suboxide matrix would buffer the volume expansion of embedded Si nano-crystallites and active amorphous SiO2 during the lithiation. This modified SiO electrode shows a large reversible capacity, close to 1000 mAh g-1, and good cyclability, over 50 cycles.

KW - Anode

KW - Disproportionation reaction

KW - Lithium ion battery

KW - Silicon monoxide

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SN - 0378-7753

VL - 222

SP - 129

EP - 134

JO - Journal of Power Sources

JF - Journal of Power Sources

ER -

Modified SiO as a high performance anode for Li-ion batteries

Abstract

Keywords

ASJC Scopus subject areas

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