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Please use this identifier to cite or link to this item: http://dspace.library.iitb.ac.in/jspui/handle/100/14295

Title: Nanoweb anodes composed of one-dimensional, high aspect ratio, size tunable electrospun ZnFe(2)O(4) nanofibers for lithium ion batteries
Authors: TEH, PF
SHARMA, Y
PRAMANA, SS
SRINIVASAN, M
Keywords: ELECTROCHEMICAL PROPERTIES
PARTICLE-SIZE
STORAGE
CO3O4
PERFORMANCE
FABRICATION
CONVERSION
CAPACITY
CELLS
ZINC
Issue Date: 2011
Publisher: ROYAL SOC CHEMISTRY
Citation: JOURNAL OF MATERIALS CHEMISTRY,21(38)14999-15008
Abstract: Nanowebs consisting of interwoven ZnFe(2)O(4) nanofibers are synthesized by a simple electrospinning technique, to be employed as an environmentally friendly anode in lithium ion batteries. Effect of precursor viscosity on the growth mechanism of electrospun ZnFe(2)O(4) nanofibers (ZFO-NF) and ZnFe(2)O(4) nanorods (ZFO-NR) is studied by microscopy and diffraction techniques. Structural characterization by powder X-ray diffraction, FESEM and HRTEM studies evaluates the single phase nature of ZnFe(2)O(4), which consists of 11(3) nm nanocrystals that self-agglomerate to form nanofibers after thermal treatment. FESEM micrographs depict the self-assembly of electrospun ZnFe(2)O(4) nanofibers into intertwined porous nanowebs with a continuous framework. Benefitting from the one-dimensional functional nanostructured architecture, the application of electrospun nanowebs with ZnFe(2)O(4) nanofiber (ZFO-NF) anodes in lithium ion batteries exhibits excellent cyclability and retains a reversible capacity of 733(10) mAh g(-1) up to 30 cycles at 60 mA g(-1) as compared to ZnFe(2)O(4) nanorods (ZFO-NR) with a capacity of similar to 200 mAh g(-1). In addition, the importance of providing electronic wiring during lithiation/delithiation, especially in prolonged cycling, is emphasized.
URI: http://dx.doi.org/10.1039/c1jm12088c
http://dspace.library.iitb.ac.in/jspui/handle/100/14295
ISSN: 0959-9428
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