Facile synthesis of Si/TiO2 (anatase) core-shell nanostructured anodes for rechargeable Li-ion batteries

Yoon Hwa, Won Sik Kim, Byeong Chul Yu, Jae Hun Kim, Seong Hyeon Hong, Hun Joon Sohn

Research output: Contribution to journalArticlepeer-review

22 Scopus citations

Abstract

A nano-Si/TiO2 core-shell nanostructured electrode was synthesized using sol-gel method. The TiO2 shells were made with 10-nm thickness, and were structurally stable upon the intercalation/ deintercalation of Li+, improve the cyclability of the Si electrode during cycling. The nano-Si/TiO2 core-shell nanostructured electrode showed a reversible capacity of ca. 1250 mA h g-1 over 50 cycles. The reaction mechanism between the nano-Si/TiO2 core-shell nanostructured electrode and Li was investigated by ex situ analyses.

Original languageEnglish (US)
Pages (from-to)202-206
Number of pages5
JournalJournal of Electroanalytical Chemistry
Volume712
DOIs
StatePublished - Jan 1 2014
Externally publishedYes

Keywords

  • Anatase
  • Anode
  • Core-shell structure
  • Lithium ion battery
  • Silicon

ASJC Scopus subject areas

  • Analytical Chemistry
  • Chemical Engineering(all)
  • Electrochemistry

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