NaxMyFe(CN)6(M=Fe, Co, Ni): A New Class of Cathode Materials for Sodium Ion Batteries

Authors

Jiang-Feng QIAN, College of Chemistry and Molecular Science, Wuhan University, Wuhan 430072, China;
Min ZHOU, College of Chemistry and Molecular Science, Wuhan University, Wuhan 430072, China;
Yu-Liang CAO, College of Chemistry and Molecular Science, Wuhan University, Wuhan 430072, China;
Han-Xi YANG, College of Chemistry and Molecular Science, Wuhan University, Wuhan 430072, China;

Corresponding Author

Han-Xi YANG(hxyang@whu.edu.cn)

Abstract

Three types of Prussian blue compounds, NaxMyFe(CN)6(M = Fe, Co, Ni), were prepared simply by solution precipitation method and tested as cathode materials for sodium-ion batteries. X-ray diffraction and SEM measurements demonstrated that the prepared materials, namely, NaFeFe(CN)6, Na2CoFe(CN)6, and Na2NiFe(CN)6, exhibited a perfect cubic structure with a particle size of several tens nanometers. Cyclic voltammetric and galvanostatic cycling tests revealed very different electrochemical behaviors of these three materials. The specific capacities of NaFeFe(CN)6 and Na2CoFe(CN)6 could reach 113 mAh?g-1 and 120 mAh?g-1, respectively, indicating that both of the Fe(CN)6-4 and Fe+2/Co+2 ions in the Prussian blue lattices were electrochemically activated. However, Ni ions in the Prussian blue lattice were found to be electrochemically inactive, therefore, the Na2NiFe(CN)6 delivered a specific capacity of only 64 mAh?g-1 but with quite stable cyclability. These preliminary results suggest a possible use of the Prussian blue compounds as low cost and environmentally benign cathode materials for sodium-ion batteries.

Graphical Abstract

Keywords

Sodium-ion batteries, Prussian blue compounds, NaxMyFe(CN)6(M = Fe, Co, Ni)

DOI Link

https://doi.org/10.61558/2993-074X.2888

Publication Date

2012-04-28

Online Available Date

2012-01-15

Revised Date

2011-12-30

Received Date

2011-11-24

Recommended Citation

Jiang-Feng QIAN, Min ZHOU, Yu-Liang CAO, Han-Xi YANG. NaxMyFe(CN)6(M=Fe, Co, Ni): A New Class of Cathode Materials for Sodium Ion Batteries[J]. Journal of Electrochemistry, 2012 , 18(2): Article 2.
DOI: 10.61558/2993-074X.2888
Available at: https://jelectrochem.xmu.edu.cn/journal/vol18/iss2/2