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Highly integrated and interconnected CNT hybrid nanofibers decorated with α-iron oxide as freestanding anodes for flexible lithium polymer batteries

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Abstract

Highly integrated and interconnected carbon nanotube (CNT) hybrid nanofibers decorated with α-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.

Graphical abstract: Highly integrated and interconnected CNT hybrid nanofibers decorated with α-iron oxide as freestanding anodes for flexible lithium polymer batteries

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Publication details

The article was received on 04 Feb 2019, accepted on 27 Mar 2019 and first published on 10 Apr 2019


Article type: Paper
DOI: 10.1039/C9TA01374A
Citation: J. Mater. Chem. A, 2019, Advance Article

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    Highly integrated and interconnected CNT hybrid nanofibers decorated with α-iron oxide as freestanding anodes for flexible lithium polymer batteries

    S. H. Oh, O. H. Kwon, Y. C. Kang, J. Kim and J. S. Cho, J. Mater. Chem. A, 2019, Advance Article , DOI: 10.1039/C9TA01374A

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