Effect of oxide layer thickness to nano-Si anode for Li-ion batteries

Byeong Chul Yu; Yoon Hwa; Cheol Min Park; Jae Hun Kim; Hun Joon Sohn

doi:10.1039/c3ra41006d

Effect of oxide layer thickness to nano-Si anode for Li-ion batteries

Byeong Chul Yu, Yoon Hwa, Cheol Min Park, Jae Hun Kim, Hun Joon Sohn

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

32 Scopus citations

Abstract

Oxide thickness controlled amorphous SiO₂/nano-Si core-shell structure anode for Li ion batteries was easily prepared by etching with NaOH solution using commercial nano-Si with a native oxide. Based on X-ray diffraction patterns and analysis of high resolution transmission microscope images, the electrode which consists of amorphous SiO₂/amorphous Si/core crystalline Si after the first cycle showed a self-limiting reaction behavior. Due to this unique dual core-shell structure for a short diffusion path, a high reversible capacity of about 1800 mAh g^-1 over 50 cycles and excellent rate capability could be achieved.

Original language	English (US)
Pages (from-to)	9408-9413
Number of pages	6
Journal	RSC Advances
Volume	3
Issue number	24
DOIs	https://doi.org/10.1039/c3ra41006d
State	Published - 2013
Externally published	Yes

ASJC Scopus subject areas

Chemistry(all)
Chemical Engineering(all)

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abstract = "Oxide thickness controlled amorphous SiO2/nano-Si core-shell structure anode for Li ion batteries was easily prepared by etching with NaOH solution using commercial nano-Si with a native oxide. Based on X-ray diffraction patterns and analysis of high resolution transmission microscope images, the electrode which consists of amorphous SiO2/amorphous Si/core crystalline Si after the first cycle showed a self-limiting reaction behavior. Due to this unique dual core-shell structure for a short diffusion path, a high reversible capacity of about 1800 mAh g-1 over 50 cycles and excellent rate capability could be achieved.",

author = "Yu, {Byeong Chul} and Yoon Hwa and Park, {Cheol Min} and Kim, {Jae Hun} and Sohn, {Hun Joon}",

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AU - Yu, Byeong Chul

AU - Hwa, Yoon

AU - Park, Cheol Min

AU - Kim, Jae Hun

AU - Sohn, Hun Joon

PY - 2013

Y1 - 2013

N2 - Oxide thickness controlled amorphous SiO2/nano-Si core-shell structure anode for Li ion batteries was easily prepared by etching with NaOH solution using commercial nano-Si with a native oxide. Based on X-ray diffraction patterns and analysis of high resolution transmission microscope images, the electrode which consists of amorphous SiO2/amorphous Si/core crystalline Si after the first cycle showed a self-limiting reaction behavior. Due to this unique dual core-shell structure for a short diffusion path, a high reversible capacity of about 1800 mAh g-1 over 50 cycles and excellent rate capability could be achieved.

AB - Oxide thickness controlled amorphous SiO2/nano-Si core-shell structure anode for Li ion batteries was easily prepared by etching with NaOH solution using commercial nano-Si with a native oxide. Based on X-ray diffraction patterns and analysis of high resolution transmission microscope images, the electrode which consists of amorphous SiO2/amorphous Si/core crystalline Si after the first cycle showed a self-limiting reaction behavior. Due to this unique dual core-shell structure for a short diffusion path, a high reversible capacity of about 1800 mAh g-1 over 50 cycles and excellent rate capability could be achieved.

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Effect of oxide layer thickness to nano-Si anode for Li-ion batteries

Abstract

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