Journal
JOURNAL OF MATERIALS CHEMISTRY A
Volume 7, Issue 20, Pages 12480-12488Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c9ta01374a
Keywords
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Funding
- National Research Foundation of Korea (NRF) - Korean government (MSIP) [NRF-2018R1A4A1024691, NRF-2017M1A2A2087577, NRF-2018R1D1A3B07042514]
- National Research Foundation of Korea [2018R1D1A3B07042514] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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Highly integrated and interconnected carbon nanotube (CNT) hybrid nanofibers decorated with alpha-Fe2O3 (denoted hereafter as HI-CNT/Fe2O3 nanofibers) were first introduced for potential use as freestanding anodes in flexible lithium polymer batteries. CNTs were modified to have a carboxyl group attached. Polyacrylonitrile (PAN) was also hydrolyzed, forming sulfonated polyacrylamide. Dipole-dipole interactions and hydrogen bonding between CNTs and PAN can form Fe(acac)(3)-PAN-CNT complexes, thus allowing for the formation of highly integrated CNTs in a stable jet without being aggregated during electrospinning. The discharge capacity of a freestanding HI-CNT/Fe2O3 nanofiber anode after 100 cycles at 100 mA g(-1) was 651 mA h g(-1). The specific capacity of a flexible full-cell combined with a LiFePO4 cathode was maintained at 148.5 mA h g(-1) (cathode-based) even after bending for 10 cycles as compared with 148.9 mA h g(-1) before bending.
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