Electrochemical reduction of nano-SiO2 in hard carbon as anode material for lithium ion batteries

B. Guo, J. Shu, Z. Wang, Hong Yang, L.H. Shi, Yinong Liu, L. Chen

Research output: Contribution to journalArticle

249 Citations (Scopus)

Abstract

A composite of silica (SiO2) and hard carbon was prepared by hydrothermal reaction. Special attention was paid to the characterization of the possible electrochemical reduction of nano-SiO2 in the composite. Evidence by solid-state nuclear magnetic resonance (NMR) and X-ray photoelectron spectroscopy (XPS) and high lithium storage capacity of the composite prove the electrochemical reduction of nano-SiO2 and the formation of Li4SiO4 and Li2O as well as Si in the first-discharge. The reversible lithium storage capacity of the nano-SiO2 is as high as 1675 mAh/g.
Original languageEnglish
Pages (from-to)1876-1878
JournalElectrochemistry Communications
Volume10
Issue number12
DOIs
Publication statusPublished - 2008

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