High crystalline Na^sub 2^Ni[Fe(CN)^sub 6^] particles for a high-stability and low-temperature sodium-ion batteries cathode

High crystalline Na2Ni[Fe(CN)6] particles are synthesized by a new electrostatic spray assisted coprecipitation method. Their structures and electrochemical properties are analyzed by X-ray powder diffraction, scanning electron microscopy and galvanostatic cell cycling and so on. Given its highly st...

Full description

Saved in:
Bibliographic Details
Published in:Electrochimica acta 2019-02, Vol.297, p.392
Main Authors: Ma, Xiao-Hang, Wei, Yi-Yong, Wu, Yao-Dong, Wang, Jiao, Jia, Wei, Zhou, Jia-Hao, Zi, Zhen-Fa, Dai, Jian-Ming
Format: Article
Language:English
Subjects:
Cathodes
Chemical synthesis
Crystal structure
Crystallinity
Cycles
Electrochemical analysis
Low temperature
Nickel
Rechargeable batteries
Scanning electron microscopy
Sodium-ion batteries
Storage batteries
Storage systems
X ray powder diffraction
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:High crystalline Na2Ni[Fe(CN)6] particles are synthesized by a new electrostatic spray assisted coprecipitation method. Their structures and electrochemical properties are analyzed by X-ray powder diffraction, scanning electron microscopy and galvanostatic cell cycling and so on. Given its highly stable structure, the optimized Na2Ni[Fe(CN)6] cathode shows impressive cycling performance with high retention capacity of 89% after 440 cycles at 1 C and excellent rate capability of 56 mAh g−1 at 25 C. In addition, the optimized Na2Ni[Fe(CN)6] cathode achieves superior low temperature performances with retains 87% capacity after 440 cycles at 0 °C and a stable capacity of 54 mAh g−1 can be delivered even at −25 °C after 440 cycles. Such a Na2Ni[Fe(CN)6] sample provides a promising cathode for sodium-ion batteries in large-scale storage systems.
ISSN:0013-4686
1873-3859
DOI:10.1016/j.electacta.2018.11.063