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Lah, Myoung Soo
Nanoporous Materials Lab
Research Interests
  • Metal-Organic Frameworks (MOFs)

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SnO2 nanoparticles confined in a graphene framework for advanced anode materials

Cited 10 times inthomson ciCited 8 times inthomson ci
Title
SnO2 nanoparticles confined in a graphene framework for advanced anode materials
Author
Hwang, Yun-HwaBae, Eun GyoungSohn, Kee-SunShim, SangdeokSong, XiaokaiLah, Myoung SooPyo, Myoungho
Keywords
Charge-discharge cycle; Framework; Individual nanoparticles; Li-ion batteries; Lithium-ion battery; Particle size and morphologies; Rate performance; Reduced graphene oxides
Issue Date
201310
Publisher
ELSEVIER SCIENCE BV
Citation
JOURNAL OF POWER SOURCES, v.240, no., pp.683 - 690
Abstract
SnO2 nanoparticles (SNPs) entrapped in a graphene framework are synthesized for use as an anode material in Li ion batteries. A framework is prepared by covalently linking SNPs-anchored graphene oxide layers with diboronic acids. The framework provides the SNPs with more effective buffering than thermally reduced graphene oxide. SNPs in a graphene framework maintain the initial particle size and morphology after repeated charge-discharge cycles, with no inter-particle aggregation. The volume increase of the composite, accompanied by Li+ insertion into SNPs, is also significantly suppressed. The isolation of an individual nanoparticle and the firmness of a framework, which are ascribed to densely cross-linked graphene layers, results in better cyclability and rate performance by comparison with thermally reduced SNPs-anchored graphene oxide.
URI
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DOI
http://dx.doi.org/10.1016/j.jpowsour.2013.04.159
ISSN
0378-7753
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