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Issue 6, 2014
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Controllable synthesis of SnO2@C yolk–shell nanospheres as a high-performance anode material for lithium ion batteries

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Abstract

In this work, we report a facile synthesis of uniform SnO2@C yolk–shell nanospheres as high-performance anode materials for lithium ion batteries (LIBs). The yolk–shell structured SnO2@C nanospheres were fabricated through a two-step sol–gel coating process by using tetraethyl orthosilicate (TEOS) and resorcinol–formaldehyde (RF) as precursors, where the silica interlayer not only acts as a template to produce the void space, but also promotes the coating of the RF layer. The synthesis is easy to operate and allows tailoring the carbon shell thickness and void space size. The resultant SnO2@C yolk–shell nanospheres possess a hollow highly crystalline SnO2 core (280–380 nm), tailored carbon shell thickness (15–25 nm) and a large void space size (100–160 nm), a high surface area (∼205 m2 g−1), a large pore volume (∼0.25 cm3 g−1), as well as a high SnO2 content (77 wt%). When evaluated as an anode of LIBs, the materials manifest superior electrochemical performance with a high lithium storage capability (2190 mA h g−1 in initial discharge capacity; >950 mA h g−1 in the first 10 cycles), a good cycling performance and an excellent rate capability.

Graphical abstract: Controllable synthesis of SnO2@C yolk–shell nanospheres as a high-performance anode material for lithium ion batteries

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Publication details

The article was received on 05 Dec 2013, accepted on 03 Jan 2014 and first published on 07 Jan 2014


Article type: Paper
DOI: 10.1039/C3NR06452B
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Citation: Nanoscale, 2014,6, 3217-3222
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    Controllable synthesis of SnO2@C yolk–shell nanospheres as a high-performance anode material for lithium ion batteries

    J. Wang, W. Li, F. Wang, Y. Xia, A. M. Asiri and D. Zhao, Nanoscale, 2014, 6, 3217
    DOI: 10.1039/C3NR06452B

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