期刊
ADVANCED ENERGY MATERIALS
卷 2, 期 8, 页码 976-982出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/aenm.201100725
关键词
lithium-ion batteries; polydimethylsiloxane; polymethylmethacrylate; carbon nanotubes; block copolymers
类别
资金
- National Research Foundation of Korea (NRF)
- Korea government (MEST) [2011-0026121, 2011-0007183, 2011K000691]
- Green Smart Card Platform Technologies Based on 3D Printed Electronic Devices Project of MKE (Ministry of Knowledge Economy) [B551179-09-07]
- ISTK (Korea Research Council for Industrial Science and Technology)
- National Research Foundation of Korea [2011-0007183, 2012-0001173] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
Flexible energy-storage devices have attracted growing attention with the fast development of bendable electronic systems. However, it still remains a challenge to find reliable electrode materials with both high mechanical flexibility/toughness and excellent electron and lithium-ion conductivity. This paper reports the fabrication and characterization of highly porous, stretchable, and conductive polymer nanocomposites embedded with carbon nanotubes (CNTs) for application in flexible lithium-ion batteries. The systematic optimization of the porous morphology is performed by controllably inducing the phase separation of polymethylmethacrylate (PMMA) in polydimethylsiloxane (PDMS) and removing PMMA, in order to generate well-controlled pore networks. It is demonstrated that the porous CNT-embedded PDMS nanocomposites are capable of good electrochemical performance with mechanical flexibility, suggesting these nanocomposites could be outstanding anode candidates for use in flexible lithium-ion batteries. The optimization of the pore size and the volume fraction provides higher capacity by nearly seven-fold compared to a nonporous nanocomposite.
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