High capacity and rate capability of core-shell structured nano-Si/C anode for Li-ion batteries

Yoon Hwa; Won Sik Kim; Seong Hyeon Hong; Hun Joon Sohn

doi:10.1016/j.electacta.2012.03.138

High capacity and rate capability of core-shell structured nano-Si/C anode for Li-ion batteries

Yoon Hwa, Won Sik Kim, Seong Hyeon Hong, Hun Joon Sohn

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

104 Scopus citations

Abstract

Core-shell structured nano-Si/C (n-Si/C) anode material for Li ion batteries was prepared by substrate induced coagulation (SIC) method with nano-Si (n-Si) as core component and amorphous carbon as shell. The electronic conducting amorphous carbon shell of 5-10nm thickness which connected each n-Si particle like frog spawn shape not only buffered volume expansion of Si particles during the cycling but also acted as an electrical conducting pathway. This n-Si/C core-shell structured electrode showed a highly reversible capacity c.a. 1800mAhg^-1 over 50 cycles, superior rate capability and good cycle retention.

Original language	English (US)
Pages (from-to)	201-205
Number of pages	5
Journal	Electrochimica Acta
Volume	71
DOIs	https://doi.org/10.1016/j.electacta.2012.03.138
State	Published - Jun 1 2012
Externally published	Yes

Keywords

Anode materials
Core-shell structure
Lithium batteries
Silicon

ASJC Scopus subject areas

Chemical Engineering(all)
Electrochemistry

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10.1016/j.electacta.2012.03.138

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title = "High capacity and rate capability of core-shell structured nano-Si/C anode for Li-ion batteries",

abstract = "Core-shell structured nano-Si/C (n-Si/C) anode material for Li ion batteries was prepared by substrate induced coagulation (SIC) method with nano-Si (n-Si) as core component and amorphous carbon as shell. The electronic conducting amorphous carbon shell of 5-10nm thickness which connected each n-Si particle like frog spawn shape not only buffered volume expansion of Si particles during the cycling but also acted as an electrical conducting pathway. This n-Si/C core-shell structured electrode showed a highly reversible capacity c.a. 1800mAhg-1 over 50 cycles, superior rate capability and good cycle retention.",

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T1 - High capacity and rate capability of core-shell structured nano-Si/C anode for Li-ion batteries

AU - Hwa, Yoon

AU - Kim, Won Sik

AU - Hong, Seong Hyeon

AU - Sohn, Hun Joon

PY - 2012/6/1

Y1 - 2012/6/1

N2 - Core-shell structured nano-Si/C (n-Si/C) anode material for Li ion batteries was prepared by substrate induced coagulation (SIC) method with nano-Si (n-Si) as core component and amorphous carbon as shell. The electronic conducting amorphous carbon shell of 5-10nm thickness which connected each n-Si particle like frog spawn shape not only buffered volume expansion of Si particles during the cycling but also acted as an electrical conducting pathway. This n-Si/C core-shell structured electrode showed a highly reversible capacity c.a. 1800mAhg-1 over 50 cycles, superior rate capability and good cycle retention.

AB - Core-shell structured nano-Si/C (n-Si/C) anode material for Li ion batteries was prepared by substrate induced coagulation (SIC) method with nano-Si (n-Si) as core component and amorphous carbon as shell. The electronic conducting amorphous carbon shell of 5-10nm thickness which connected each n-Si particle like frog spawn shape not only buffered volume expansion of Si particles during the cycling but also acted as an electrical conducting pathway. This n-Si/C core-shell structured electrode showed a highly reversible capacity c.a. 1800mAhg-1 over 50 cycles, superior rate capability and good cycle retention.

KW - Anode materials

KW - Core-shell structure

KW - Lithium batteries

KW - Silicon

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JO - Electrochimica Acta

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High capacity and rate capability of core-shell structured nano-Si/C anode for Li-ion batteries

Abstract

Keywords

ASJC Scopus subject areas

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