Silicon/Hollow γ-Fe2O3 Nanoparticles as Efficient Anodes for Li-Ion Batteries

Content Provider	Semantic Scholar
Author	Grinbom, Gal Duveau, David Gershinsky, Gregory Monconduit, Laure Zitoun, David
Copyright Year	2015
Abstract	Nanomaterials have triggered a lot of attention as potential triggers for a technological breakthrough in Energy Storage Devices and specifically Li-ion batteries. Herein, we report the original synthesis of well-defined silicon/iron oxide nanoparticles and its application as anode materials for Li-ion batteries. This model compound is based on earth abundant elements and allows for a full investigation of the electrochemical reactions through its iron oxide magnetic phase. The elaboration of silicon with iron oxide grown on its surface has been achieved by reacting an organometallic precursor Fe(CO)5 with Si nanopowder and subsequent slow oxidation step in air yields hollow γ-Fe2O3 on the Si surface. This specific morphology results in an enhancement of the specific capacity from 2000 mAh/gSi up to 2600 mAh/gSi. Such a high specific capacity is achieved only for hollow γ-Fe2O3 and demonstrates a novel approach toward the modification of electrode materials with an earth abundant transition metal like iro.
Starting Page	2703
Ending Page	2710
Page Count	8
File Format	PDF HTM / HTML
DOI	10.1021/acs.chemmater.5b00730
Volume Number	27
Alternate Webpage(s)	https://zitounlab.files.wordpress.com/2013/08/zitoun57_si_fe2o3.pdf
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article