Development of potassium ferrate(VI) cathode material stabilized with yttria doped zirconia coating for alkaline super-iron battery

Zhang, Yuqing, Zhang, Guodong and Du, Tingdong (2011) Development of potassium ferrate(VI) cathode material stabilized with yttria doped zirconia coating for alkaline super-iron battery. Electrochimica Acta, 56 3: 1159-1163. doi:10.1016/j.electacta.2010.10.027


Author Zhang, Yuqing
Zhang, Guodong
Du, Tingdong
Title Development of potassium ferrate(VI) cathode material stabilized with yttria doped zirconia coating for alkaline super-iron battery
Journal name Electrochimica Acta   Check publisher's open access policy
ISSN 0013-4686
1873-3859
Publication date 2011-01-01
Sub-type Article (original research)
DOI 10.1016/j.electacta.2010.10.027
Open Access Status Not Open Access
Volume 56
Issue 3
Start page 1159
End page 1163
Total pages 5
Place of publication Kidlington, Oxford, United Kingdom
Publisher Pergamon
Language eng
Formatted abstract
To improve the stability of potassium ferrate(VI) (K2FeO4) cathode and its properties of charge transfer in alkaline battery system, K2FeO4 cathodes are coated by yttria (Y2O3) doped zirconia (ZrO2) composites, denoted as Y2O3–ZrO2 composite coatings. These composite coatings are derived from the conversion of yttrium nitrate (Y(NO3)3·6H2O) and Zirconium oxychloride (ZrOCl2·6H2O) in ether medium. Examinations by scanning electron microscope (SEM) and Fourier transform infrared spectroscopy (FT-IR) show that K2FeO4 cathodes are coated by Y2O3–ZrO2 overlayer. Alternatively, results of discharge properties and electrochemical impedance spectroscopes (EIS) indicate that when the molar ratio between Y2O3 and ZrO2 is 0.09, denoted as Y2O3 (9 mol%)–ZrO2, the stability and charge transfer of Y2O3 (9 mol%)–ZrO2 coated K2FeO4 cathodes are improved greatly compared to that of uncoated or ZrO2 coated K2FeO4 cathodes. Therefore, Y2O3–ZrO2 composite coatings are a potential choice to improve the stability and charge transfer of K2FeO4 cathodes in alkaline electrolyte.
Keyword Yttria doped zirconia coating
Potassium ferrate(VI) cathode
Alkaline super-iron battery
Stability
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Engineering Publications
Australian Institute for Bioengineering and Nanotechnology Publications
 
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