Synthesis of nanocrystalline Fe2O3 for lithium secondary battery cathode

被引：37

作者：

Komaba, S ^{[1
]}

Suzuki, K ^{[1
]}

Kumagai, N ^{[1
]}

机构：

[1] Iwate Univ, Dept Chem Engn, Morioka, Iwate 0208551, Japan

来源：

ELECTROCHEMISTRY | 2002年 / 70卷 / 07期

关键词：

iron oxide; lithium battery; lithium intercalation; soft chemistry;

D O I：

10.5796/electrochemistry.70.506

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Iron based oxides were synthesized by precipitation route from a ferric nitrate aqueous solution at low temperature followed by heat treatment of the precipitate. The samples thus obtained were characterized by X-ray powder diffraction, transmission electron microscopy, surface area measurement, and electrochemical investigation in a LiClO4-propylene carbonate solution. Nanocrystalline alpha-Fe2O3 powders, which were obtained by heat treatment at 200degreesC, demonstrated high reversible capacity of >200 mAh g(-1) and good cyclability as a positive electrode of Li batteries. It was likely that the discharge-recharge of the nanocrystalline alpha-Fe2O3 was due to a topochemical reaction accompanied with lithium insertion/extraction.

引用

页码：506 / 510

页数：5

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