Journal
CERAMICS INTERNATIONAL
Volume 40, Issue 1, Pages 2359-2364Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.ceramint.2013.08.006
Keywords
Hollow structure; Zn2SnO4; PPY coating; Lithium battery; Anode materials
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Funding
- Spaceflight Foundation of the People's Republic of China [NBXW0001]
- Spaceflight Innovation Foundation of China [NBXT0002]
- Basic Research Foundation of Northwestern Polytechnical University [JC201269]
- Graduate Starting Seed Fund of Northwestern Polytechnical University [Z2013146]
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Polypyrrole-coated hollow Zn2SnO4 boxes (hollow Zn2SnO4@PPY nanocomposites) had been prepared by a microemulsion polymerization. The structural, morphological and electrochemical properties were methodically investigated by means of XRD, TGA, BJH (pore size distribution analysis), SEM, TEM, and electrochemical measurements. Results show that the hollow Zn2SnO4 boxes with the uniform and cube like structure are coated by PPY. Electrochemical measurement suggests that hollow Zn2SnO4@PPY composites exhibit better cycling properties and lower initial irreversible capacities as anode materials for lithium-ion batteries. At a current density of 60 mA/g in the voltage about 0.01-3.0 V, the first discharge-charge capacities of hollow Zn2SnO4@PPY composites are 1105.2 mAh/g and 556 mAh/g. After 50 cycles, a specific charge capacity of 478.4 mAh/g remained and the coulombic efficiency reaches 98.2%, revealing better capacity retention compared with hollow Zn2SnO4 boxes. (C) 2013 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
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