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Fabricating Fe3O4/Fe/Biocarbon Fibers using Cellulose Nanocrystals for High-Rate Li-ion Battery Anode.
- Source :
-
Electrochimica Acta . Aug2015, Vol. 174, p1175-1184. 10p. - Publication Year :
- 2015
-
Abstract
- Searching the high rate Fe 3 O 4 -based materials for lithium ion batteries (LIBs) is still a great challenge. Here we tackle this problem by developing a facile and green method which uses the natural cotton as a biotemplate and a activity biocarbon source. By this new method, we synthesized the mesoporous biocarbon fibers adhered with Fe 3 O 4 /Fe nanoparticles (Fe 3 O 4 /Fe/MBCFs). Fe 3 O 4 /Fe/MBCFs are a highly stable anode material for high-rate LIBs due to its excellent cycling performance at higher current and fast charging feature. This anode shows a high reversible capacity of 472 mAh g −1 after 500 cycles and can be rapidly charge to 100% in 28.3 min. After 160 cycles at varied current densities from 1 A g −1 to 10 A g −1 , it still delivered a high discharge capacity of 524.6 mAh g −1 and an ultra-high coulombic efficiency close to 100%. This is attributed to the synergistic effects of several factors including the unique mesoporous hybrid construction, the graphitized biocarbon fibers and the chemical bonding between Fe 3 O 4 and Fe nanoparticles. This work is instructive for fabrication and design of nanostructured electrodes with extraordinary properties from biomass renewable resources. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00134686
- Volume :
- 174
- Database :
- Academic Search Index
- Journal :
- Electrochimica Acta
- Publication Type :
- Academic Journal
- Accession number :
- 108724635
- Full Text :
- https://doi.org/10.1016/j.electacta.2015.06.098