Sulfur-doped ZnFe.sub.2O.sub.4 nanoparticles with enhanced lithium storage capabilities

Sulfur-doped ZnFe.sub.2O.sub.4 nanoparticles were synthesized through sulfurizing ZnFe.sub.2O.sub.4 nanoparticles in the hydrothermal process using Na.sub.2S as the sulfur source. The content of sulfur dopant was tuned from 0.70 to 1.26 wt% by controlling concentrations of Na.sub.2S solutions. When...

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Bibliographic Details
Published in:Journal of materials science 2017-04, Vol.52 (7), p.3566
Main Authors: Nie, Longying, Wang, Huijun, Ma, Jingjing, Liu, Sheng, Yuan, Ruo
Format: Article
Language:English
Subjects:
Batteries
Nanoparticles
Sulfur
Sulfur compounds
Online Access:Get full text
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Summary:Sulfur-doped ZnFe.sub.2O.sub.4 nanoparticles were synthesized through sulfurizing ZnFe.sub.2O.sub.4 nanoparticles in the hydrothermal process using Na.sub.2S as the sulfur source. The content of sulfur dopant was tuned from 0.70 to 1.26 wt% by controlling concentrations of Na.sub.2S solutions. When evaluated as anode materials for lithium-ion batteries, sulfur-doped ZnFe.sub.2O.sub.4 nanoparticles exhibited much higher reversible capacities, better rate performances, and more excellent cycling stabilities than the pristine ZnFe.sub.2O.sub.4 nanoparticles. After 60 cycles at a current density of 100 mA g.sup.-1, the electrode of sulfur-doped ZnFe.sub.2O.sub.4 nanoparticles (1.26 wt%) delivered a reversible specific capacity of 604 mA h g.sup.-1, while the pristine ZnFe.sub.2O.sub.4 electrode only remained 200 mA h g.sup.-1.
ISSN:0022-2461
1573-4803
DOI:10.1007/s10853-016-0373-y