Improved cycle stability of Fe-air solid state oxide rechargeable battery using LaGaO3-based oxide ion conductor

JOURNAL OF POWER SOURCES

卷:262

Article

Inoishi, Atsushi¹  Sakai, Takaaki²  Ju, Young Wan¹  Ida, Shintaro^1,3  Ishihara, Tatsumi^1,3 

[1] Kyushu Univ, Fac Engn, Dept Appl Chem, Fukuoka 812, Japan

[2] Kyushu Univ, Ctr Mol Syst, Nishi Ku, Fukuoka 8190395, Japan

[3] Int Inst Carbon Neutral Energy Res WPI I2CNER, Nishi Ku, Fukuoka 8190395, Japan

关键词: Fe-air rechargeable battery;    Oxide ion conductor;    Operation temperature;    LaGaO3 based oxide;   

DOI  :  10.1016/j.jpowsour.2014.03.125

来源: Elsevier

【 摘 要 】

The effect of operating temperature on the discharge potential and cycle stability of an Fe-air solid oxide rechargeable battery was studied. An Fe-air cell operated at 773 K exhibited the highest discharge potential (1.07 V) and high cycle stability with a current density of 5 mA cm(-2). The high discharge potential at lower operating temperatures is due to aggregation of the anode and Fe powder being suppressed. The high redox cycle stability of the Ni-Fe-based anode at 773 K is explained by the small volume change with suppressed aggregation under low-temperature operation. Electrochemical charge-discharge measurements at 773 K revealed excellent cycle stability for 30 cycles with a high energy density (round trip efficiency >80%). (C) 2014 Elsevier B.V. All rights reserved.

【 授权许可】

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