Volume 44, Issue 11 pp. 9205-9212
SHORT COMMUNICATION

Multi-metal doped high capacity and stable Prussian blue analogue for sodium ion batteries

Youhuan Zhu

Youhuan Zhu

College of Chemistry and Chemical Engineering, Anhui University, Hefei, China

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Zhi Zhang

Zhi Zhang

College of Chemistry and Chemical Engineering, Anhui University, Hefei, China

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Junjie Bao

Junjie Bao

College of Chemistry and Chemical Engineering, Anhui University, Hefei, China

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Shaohua Zeng

Shaohua Zeng

College of Chemistry and Chemical Engineering, Anhui University, Hefei, China

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Wangyan Nie

Wangyan Nie

College of Chemistry and Chemical Engineering, Anhui University, Hefei, China

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Pengpeng Chen

Pengpeng Chen

College of Chemistry and Chemical Engineering, Anhui University, Hefei, China

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Yifeng Zhou

Yifeng Zhou

College of Chemistry and Chemical Engineering, Anhui University, Hefei, China

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Ying Xu

Corresponding Author

Ying Xu

College of Chemistry and Chemical Engineering, Anhui University, Hefei, China

Correspondence

Ying Xu, College of Chemistry and Chemical Engineering, Anhui University, Hefei 230601, China.

Email: [email protected]

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First published: 09 June 2020
Citations: 55

Funding information: National Natural Science Foundation of China, Grant/Award Number: 51602001; Natural Science Foundation of Anhui Province, Grant/Award Number: 1808085QE173

Summary

Prussian blue analogues (PBA) are attractive positive electrode for sodium ion batteries due to their large interstitial sites and three-dimensional porous framework. However, they often suffer from irreversible phase transition upon charging and discharging, leading to fast capacity decay. In consideration that redox couples of Co2+/Co3+, Ni2+/Ni3+ and Fe2+/Fe3+ guarantee high capacity (~150 mA h g−1), and Cu serves as a pillar to hold the PBA framework, here we synthesized a series of Cu, Co and Ni co-doped PBA, displaying high capacity and stable cycling performance with >98% capacity retention after 50 cycles.

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