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Title: Converting commercial Fe2O3 to effective anode material using glucose as “etching” agent
Fe2O3 is an appealing anode material due to its high specific capacity (1007 mAh g− 1), low cost, natural abundance, and nontoxicity. However, its unstable structure during cycling processes has hindered its potential. In this study, we present a “green” synthesis method to fabricate stable porous Fe2O3 encapsulated in a buffering hollow structure (p-Fe2O3@h-TiO2) as an effective anode material for Li-ion batteries. The synthesis process only involves glucose as an “etching” agent, without the need for organic solvents or difficult-to-control environments. Characterizations of the nanostructures, chemical compositions, crystallizations, and thermal behaviors for the intermediate/final products confirm the formation of p-Fe2O3@h-TiO2. The synthesized Fe2O3 anode material effectively accommodates volume change, decreases pulverization, and alleviates agglomeration, leading to a high capacity that is over eleven times greater than that of the as-received commercial Fe2O3 after a long cycling process. This work provides an attractive, “green” and efficient method to convert commercially abundant resources like Fe2O3 into effective electrode materials for energy storage systems.  more » « less
Award ID(s):
1929236
PAR ID:
10471270
Author(s) / Creator(s):
; ; ; ; ;
Publisher / Repository:
Elsevier Ltd and Techna Group S.r.l.
Date Published:
Journal Name:
Ceramics International
Volume:
49
Issue:
20
ISSN:
0272-8842
Page Range / eLocation ID:
32652 to 32662
Subject(s) / Keyword(s):
Iron oxide, Nanostructure, Core-shell, Anode, Li-ion battery
Format(s):
Medium: X
Sponsoring Org:
National Science Foundation
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