Journal
JOURNAL OF POWER SOURCES
Volume 270, Issue -, Pages 28-33Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jpowsour.2014.07.059
Keywords
Lithium-ion battery; Anode; Tin oxide nanoparticle; Nitrogen doped graphene aerogel; Hybrid
Funding
- Natural Science Foundation of Shandong Province [ZR2009BM012, 2012BSC01014, ZR2013BM023]
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Tin dioxide nanoparticles on nitrogen doped graphene aerogel (SnO2-NGA) hybrid are synthesized by one-step hydrothermal method and successfully applied in lithium-ion batteries as a free-standing anode. The electrochemical performance of SnO2-NGA hybrid is investigated by galvanostatic charge discharge cycling, rate capability test, cyclic voltammetry and electrochemical impedance spectroscopy. It is found that the SnO2-NGA hybrid with freestanding spongy-like structure exhibit remarkable lithium storage capacity (1100 mAh g(-1) after 100 cycles), good cycling stability and high rate capability. The outstanding performance is attributed to the uniform SnO2 nanoparticles, unique spongy-like structure and N doping defect for Li+ diffusion. (C) 2014 Elsevier B.V. All rights reserved.
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