Title

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

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.

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Link to publisher version (DOI)

http://dx.doi.org/10.1016/j.carbon.2007.10.032