Ultrasmall SnO(2) nanocrystals: hot-bubbling synthesis, encapsulation in carbon layers and applications in high capacity Li-ion storage
Ding, L. He, S. Miao, S. Jorgensen, M.R. Leubner, S. Yan, C. Hickey, Stephen G. Eychmüller, A. Xu, J. Schmidt, O.G.
Ding, L.
He, S.
Miao, S.
Jorgensen, M.R.
Leubner, S.
Yan, C.
Hickey, Stephen G.
Eychmüller, A.
Xu, J.
Schmidt, O.G.
Publication Date
2014-04-15
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(c) 2014 The Authors. This is an Open Access article distributed under the Creative Commons CC-BY-NC-SA license (http://creativecommons.org/licenses/by-nc-sa/3.0/)
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2014-03-25
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Abstract
Ultrasmall SnO2 nanocrystals as anode materials for lithium-ion batteries (LIBs) have been synthesized by bubbling an oxidizing gas into hot surfactant solutions containing Sn-oleate complexes. Annealing of the particles in N2 carbonifies the densely packed surface capping ligands resulting in carbon encapsulated SnO2 nanoparticles (SnO2/C). Carbon encapsulation can effectively buffer the volume changes during the lithiation/delithiation process. The assembled SnO2/C thus deliver extraordinarily high reversible capacity of 908 mA.h.g(-1) at 0.5 C as well as excellent cycling performance in the LIBs. This method demonstrates the great potential of SnO2/C nanoparticles for the design of high power LIBs.
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Ding L, He S, Miao S et al (2014) Ultrasmall SnO(2) nanocrystals: hot-bubbling synthesis, encapsulation in carbon layers and applications in high capacity Li-ion storage. Scientific Reports. 4: 4647.
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