Fabrication of three-dimensionally interconnected nanoparticle superlattices and their lithium-ion storage properties

Yucong Jiao, Dandan Han, Yi Ding, Xianfeng Zhang, Guannan Guo, Jianhua Hu, Dong Yang () and Angang Dong ()
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Yucong Jiao: Fudan University
Dandan Han: Fudan University
Yi Ding: Fudan University
Xianfeng Zhang: Fudan University
Guannan Guo: Fudan University
Jianhua Hu: Fudan University
Dong Yang: Fudan University
Angang Dong: Fudan University

Nature Communications, 2015, vol. 6, issue 1, 1-8

Abstract: Abstract Three-dimensional superlattices consisting of nanoparticles represent a new class of condensed materials with collective properties arising from coupling interactions between close-packed nanoparticles. Despite recent advances in self-assembly of nanoparticle superlattices, the constituent materials have been limited to those that are attainable as monodisperse nanoparticles. In addition, self-assembled nanoparticle superlattices are generally weakly coupled due to the surface-coating ligands. Here we report the fabrication of three-dimensionally interconnected nanoparticle superlattices with face-centered cubic symmetry without the presynthesis of the constituent nanoparticles. We show that mesoporous carbon frameworks derived from self-assembled supercrystals can be used as a robust matrix for the growth of nanoparticle superlattices with diverse compositions. The resulting interconnected nanoparticle superlattices embedded in a carbon matrix are particularly suitable for energy storage applications. We demonstrate this by incorporating tin oxide nanoparticle superlattices as anode materials for lithium-ion batteries, and the resulting electrochemical performance is attributable to their unique architectures.

Date: 2015
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DOI: 10.1038/ncomms7420

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