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Park, Soojin
Nano-Functional Materials Lab
Research Interests
  • Block Copolymers, nanostructured materials for Lithium-Ion batteries, wearable and stretchable energy storage applications

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Double locked silver-coated silicon nanoparticle/graphene core/shell fiber for high-performance lithium-ion battery anodes

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Title
Double locked silver-coated silicon nanoparticle/graphene core/shell fiber for high-performance lithium-ion battery anodes
Author
Gu, MinsuKo, SeungheeYoo, SeungminLee, EunheeMin, Sa HoonPark, SoojinKim, Byeong-Su
Issue Date
2015-12
Publisher
ELSEVIER SCIENCE BV
Citation
JOURNAL OF POWER SOURCES, v.300, pp.351 - 357
Abstract
We present a fabrication of scalable coaxial core/shell silicon (Si)-graphene fiber prepared by dual-nozzle-induced wet-spinning assembly for high-performance Si anode. Over 50 wt% of Si nanoparticles mixed with graphene oxide suspension can be incorporated in the core with the outstanding dispersibility of unique silver-coated Si nanoparticles in aqueous media. The core fiber is further encapsulated by graphene shell which not only provides conducting pathways, but also alleviates severe volume expansion of Si core. This novel core/shell Si anode with double locked graphene architecture delivers more stable cycle performance and superior rate capability than anodes composed of simple mixture of Si-graphene composites.
URI
https://scholarworks.unist.ac.kr/handle/201301/17623
URL
http://www.sciencedirect.com/science/article/pii/S0378775315303438
DOI
10.1016/j.jpowsour.2015.09.083
ISSN
0378-7753
Appears in Collections:
PHY_Journal Papers
ECHE_Journal Papers
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