Highly integrated and interconnected CNT hybrid nanofibers decorated with alpha-iron oxide as freestanding anodes for flexible lithium polymer batteries
- Authors
- Oh, Se Hwan; Kwon, O. Hyeon; Kang, Yun Chan; Kim, Jae-Kwang; Cho, Jung Sang
- Issue Date
- 28-5월-2019
- Publisher
- ROYAL SOC CHEMISTRY
- Citation
- JOURNAL OF MATERIALS CHEMISTRY A, v.7, no.20, pp.12480 - 12488
- Indexed
- SCIE
SCOPUS
- Journal Title
- JOURNAL OF MATERIALS CHEMISTRY A
- Volume
- 7
- Number
- 20
- Start Page
- 12480
- End Page
- 12488
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/65369
- DOI
- 10.1039/c9ta01374a
- ISSN
- 2050-7488
- Abstract
- 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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