期刊
ELECTROCHIMICA ACTA
卷 297, 期 -, 页码 392-397出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2018.11.063
关键词
Na2Ni[Fe(CN)(6)]; High stability; Cathode; Low-temperature properties; Sodium-ion battery
资金
- National Nature Science Foundation of China [U16321611, 1274314]
- Post-doctoral Science Foundation of China [2016M590585]
- Education Department of Anhui Province [KJ2016A578]
- Nature Science Research Project of Anhui province [1808085QE154]
- Youth Fund of Hefei Normal University [2016rcjj06, 2017QN06]
- Innovative Training Program of Hefei Normal University [201714098080, 201714098076]
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 degrees C and a stable capacity of 54 mAh g(-1) can be delivered even at -25 degrees C after 440 cycles. Such a Na2Ni[Fe(CN)(6)] sample provides a promising cathode for sodium-ion batteries in large-scale storage systems. (C) 2018 Elsevier Ltd. All rights reserved.
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