ISSN: 1003-6326
CN: 43-1239/TG
CODEN: TNMCEW

Vol. 25    No. 11    November 2015

Synthesis of α-Fe2O3@SnO2 core-shell nanoparticles vialow-temperature molten salt reaction route
Gang LIU1,2, Wei-jia SUN2, Sha-sha TANG3, Shu-quan LIANG3, Jun LIU3
(1. Department of Hepatobiliary & Enteric Surgery Research Center, Xiangya Hospital,
Central South University, Changsha 410008, China;
2. Department of General Surgery, Xiangya Hospital, Central South University, Changsha 410008, China;
3. School of Materials Science and Engineering, Central South University, Changsha 410083, China
)
Abstract: Acost-effective carbon-free nanocoating strategy was developed for the synthesis of ultra-fine SnO2 coating α-Fe2O3 core-shell nanoparticles. This strategy only involves a two-step molten salt reaction at low temperature of 300 °C. The as-prepared α-Fe2O3@SnO2 core-shell nanocomposites show enhanced electrochemical performances than the bare α-Fe2O3 nanoparticles. This involved metal oxide nanocoating method is easy to be carried out, and the heat treatment temperature is much lower than that of other traditional solid-state annealing method and many carbon or metal oxide nanocoating methods. The molten salt method may also be used to produce other metal oxides coating nanostructures as the electrode materials for lithium-ion batteries.
Key words: nanometer materials; lithium-ion batteries; molten salt reaction; energy materials; nano-coating
Superintended by The China Association for Science and Technology (CAST)
Sponsored by The Nonferrous Metals Society of China (NFSOC)
Managed by Central South University (CSU)