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 journalArticlepeer-review

29 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 languageEnglish (US)
Pages (from-to)9408-9413
Number of pages6
JournalRSC Advances
Volume3
Issue number24
DOIs
StatePublished - 2013
Externally publishedYes

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)

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