Oxygen rocking aqueous batteries utilizing reversible topotactic oxygen insertion/extraction in iron-based perovskite oxides Ca1-xLaxFeO3-δ

被引：25

作者：

Hibino, Mitsuhiro ^{[1
]}

Kimura, Takeshi ^{[1
]}

Suga, Yosuke ^{[1
]}

Kudo, Tetsuichi ^{[1
]}

Mizuno, Noritaka ^{[1
]}

机构：

[1] Univ Tokyo, Sch Engn, Dept Appl Chem, Bunkyo Ku, Tokyo 1138656, Japan

来源：

SCIENTIFIC REPORTS | 2012年 / 2卷

基金：

日本学术振兴会;

关键词：

DIFFUSION-COEFFICIENTS; LITHIUM; KINETICS; CATHODE;

D O I：

10.1038/srep00601

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Developments of large-scale energy storages with not only low cost and high safety but also abundant metals are significantly demanded. While lithium ion batteries are the most successful method, they cannot satisfy all conditions. Here we show the principle of novel lithium-free secondary oxygen rocking aqueous batteries, in which oxygen shuttles between the cathode and anode composed of iron-based perovskite-related oxides Ca0.5La0.5FeOz (2.5 <= z <= 2.75 and 2.75 <= z <= 3.0). Compound Ca0.5La0.5FeOz can undergo two kinds of reduction and reoxidation of Fe4+/Fe3+ and Fe3+/Fe2+, that are accompanied by reversible and repeatable topotactic oxygen extraction and reinsertion during discharge and charge processes.

引用

页数：4

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