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|Title:||Synthesis of hollow GeO₂ nanostructures, transformation into Ge@C, and lithium storage properties|
|Other Titles:||Synthesis of hollow GeO(2) nanostructures, transformation into Ge@C, and lithium storage properties|
|Citation:||Journal of Materials Chemistry A, 2013; 1(26):7666-7672|
|Publisher:||Royal Society of Chemistry|
|Li Li, Kuok Hau Seng, Chuanqi Feng, Hua Kun Liu and Zaiping Guo|
|Abstract:||In this work, we synthesize mesoporous and hollow germanium@carbon nanostructures through simultaneous carbon coating and reduction of a hollow ellipsoidal GeO2 precursor. The formation mechanism of GeO2 ellipsoids and the ratio of Ge4+ to Sn4+ as the starting materials are also investigated. Compared to the solid ellipsoidal Ge@carbon (Ge@C-3), the hollow ellipsoidal Ge@C-1 sample exhibits better cycling stability (100% capacity retention after 200 cycles at the 0.2 C rate) and higher rate capability (805 mA h g−1 at 20 C) compared to Ge@C-3 due to its unique hollow structure; therefore, this hollow ellipsoidal Ge@carbon can be considered as a potential anode material for lithium ion batteries.|
|Rights:||This journal is © The Royal Society of Chemistry 2013|
|Appears in Collections:||Aurora harvest 8|
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