Get 20M+ Full-Text Papers For Less Than $1.50/day. Start a 14-Day Trial for You or Your Team.

Learn More →

Mesoporous Li2FeSiO4/C nanocomposites with enhanced performance synthesized from fumednano silica

Mesoporous Li2FeSiO4/C nanocomposites with enhanced performance synthesized from fumednano silica Mesoporous Li2FeSiO4/C nanocomposites (LFS-FNS and LFS-NS) were prepared from fumed nano silica (FNS) and nano silica (NS) through facile solid-state reactions, respectively. XRD analysis indicates that the crystalline structures of LFS-FNS and LFS-NS are indexed to monoclinic Li2FeSiO4 of P21. SEM results prove that the particle size of LFS-FNS and FNS (25~40 nm) is smaller than that of LFS-NS and NS, revealing the particle size of Li2FeSiO4/C nanocomposites can be tuned by choosing different silica. TEM further indicates Li2FeSiO4 nanoparticles are uniformly dispersed in the amorphous carbon networking of LFS-FNS. Pore structure analysis indicates the external surface areas of LFS-FNS as well as LFS-NS are 51.4 and 36.1 m2 g−1, indicating the pore properties of mesoporous Li2FeSiO4/C nanocomposites can be controlled by using different silica as silicon resource. The reduced particle size and high external surface area shorten the lithium-ion diffusion path and make LFS-FNS possess better electrochemical performance over LFS-NS. The discharge capacity of LFS-FNS is as high as 172 mA h g−1 at 0.1 C. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Ionics Springer Journals

Mesoporous Li2FeSiO4/C nanocomposites with enhanced performance synthesized from fumednano silica

Ionics , Volume 24 (9) – Dec 20, 2017

Loading next page...
 
/lp/springer-journals/mesoporous-li2fesio4-c-nanocomposites-with-enhanced-performance-alq53jQful

References (41)

Publisher
Springer Journals
Copyright
Copyright © 2017 by Springer-Verlag GmbH Germany, part of Springer Nature
Subject
Chemistry; Electrochemistry; Renewable and Green Energy; Optical and Electronic Materials; Condensed Matter Physics; Energy Storage
ISSN
0947-7047
eISSN
1862-0760
DOI
10.1007/s11581-017-2399-9
Publisher site
See Article on Publisher Site

Abstract

Mesoporous Li2FeSiO4/C nanocomposites (LFS-FNS and LFS-NS) were prepared from fumed nano silica (FNS) and nano silica (NS) through facile solid-state reactions, respectively. XRD analysis indicates that the crystalline structures of LFS-FNS and LFS-NS are indexed to monoclinic Li2FeSiO4 of P21. SEM results prove that the particle size of LFS-FNS and FNS (25~40 nm) is smaller than that of LFS-NS and NS, revealing the particle size of Li2FeSiO4/C nanocomposites can be tuned by choosing different silica. TEM further indicates Li2FeSiO4 nanoparticles are uniformly dispersed in the amorphous carbon networking of LFS-FNS. Pore structure analysis indicates the external surface areas of LFS-FNS as well as LFS-NS are 51.4 and 36.1 m2 g−1, indicating the pore properties of mesoporous Li2FeSiO4/C nanocomposites can be controlled by using different silica as silicon resource. The reduced particle size and high external surface area shorten the lithium-ion diffusion path and make LFS-FNS possess better electrochemical performance over LFS-NS. The discharge capacity of LFS-FNS is as high as 172 mA h g−1 at 0.1 C.

Journal

IonicsSpringer Journals

Published: Dec 20, 2017

There are no references for this article.