Effects of low-temperature carbon encapsulation on the electrochemical performance of SnO2 nanopowders

Authors

Min-Sik Park, University of WollongongFollow
Yong-Mook Kang, Energy Laboratory, Samsung
Jung Ho Kim, University of WollongongFollow
Guoxiu Wang, University of WollongongFollow
S X. Dou, University of WollongongFollow
Hua-Kun Liu, University of WollongongFollow

RIS ID

23022

Publication Details

Park, M., Kang, Y., Kim, J., Wang, G., Dou, S. X. and Liu, H. K. (2008). Effects of low-temperature carbon encapsulation on the electrochemical performance of SnO2 nanopowders. Carbon, 46 (1), 35-40.

Abstract

Carbon encapsulated SnO2 composites were prepared by a thermal evaporation and decomposition of malic acid (C4H6O5) at low temperature to demonstrate their potential use for application in lithium ion batteries. The solution-based chemical approach was effective for coating amorphous C layers on the surface of SnO2 nanopowders without significant oxygen reduction. The desirable crystalline structure and oxygen stoichiometry of SnO2 were maintained, while amorphous C homogeneously encapsulated SnO2 nanopowders. The strong enhancement on the anodic reversible capacity and cyclic performance was discussed for the C-encapsulated SnO2 composites. It is expected that the low-temperature processing can be a new general route for preparing composites with C from economic point of view.