Fe3O4-embedded rGO composites as anode for rechargeable FeOx-air batteries

被引：44

作者：

Tan, Wai Kian ^{[1
]}

Asami, Kenta ^{[2
]}

Maegawa, Keiichiro ^{[2
]}

Kumar, Rajesh ^{[2
]}

Kawamura, Go ^{[2
]}

Muto, Hiroyuki ^{[1
,2
]}

Matsuda, Atsunori ^{[2
]}

机构：

[1] Toyohashi Univ Technol, Inst Liberal Arts & Sci, Toyohashi, Aichi 4418580, Japan

[2] Toyohashi Univ Technol, Dept Elect & Elect Informat Engn, Toyohashi, Aichi 4418580, Japan

来源：

MATERIALS TODAY COMMUNICATIONS | 2020年 / 25卷

基金：

日本学术振兴会;

关键词：

Iron oxide (Fe3O4); Graphene; Reduced graphene oxide; Alkaline electrolyte; Rechargeable Fe-air batteries; PERFORMANCE; ELECTRODES; REDUCTION; HYBRID; ENERGY;

D O I：

10.1016/j.mtcomm.2020.101540

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A simple formation of iron oxide (Fe3O4)-embedded reduced graphene oxide (rGO) composite was demonstrated using the chemical precipitation method proposed in this study. The rGO consisted of exfoliated nanosheets serves as a good framework for penetration and adsorption of the Fe precursor, allowing homogeneous formation of Fe3O4 crystals within the rGO nanosheet structure. The Fe3O4/rGO composite electrode, containing 60 wt.% Fe3O4, demonstrated promising electrochemical behavior at different scan rates. In a three-electrode charge discharge measurement, a prolonged cyclic performance with good capacity retention for 100 cycles was obtained. In the battery performance evaluation for alkaline aqueous rechargeable Fe-air batteries, a maximum and stable discharge capacity of approximately 420 mA h g(-1) was achieved. This simple fabrication method of Fe3O4/rGO composites is very promising not only for large-scale active materials fabrication for Fe-air batteries with enhanced performance, but also serves as a good platform for the development of complex-oxide-rGO hybrids in high performance energy storage materials.

引用

页数：9