Journal
ELECTROCHIMICA ACTA
Volume 272, Issue -, Pages 44-51Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2018.03.181
Keywords
Na2Co[Fe(CN)(6)]; Electrostatic spray assisted coprecipitation; Cathode; Sodium-ion battery
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Funding
- National Nature Science Foundation of China [U16321611, 1274314]
- Postdoctoral Science Foundation of China [2016M590585]
- Education Department of Anhui Province [KJ2016A578]
- Youth Fund of Hefei Normal University [2016rcjj06, 2017QN06]
- Innovative Training Program of Hefei Normal University [201714098080, 201714098076]
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The Na2Co[Fe(CN)(6)] nanoparticles with a low content of Fe(CN)(6) defects and coordinating water are synthesized by a facile electrostatic spray assisted coprecipitation (ESAC) method. X-ray diffraction, thermogravimetric analysis, scanning electron microscopy, transmission electron microscopy, elemental analysis and galvanostatic cell cycling are used to characterize the structure and electrochemical performance of the Na2Co[Fe(CN)(6)] nanoparticles. The results show that the structure and electrochemical performance of the Na2Co[Fe(CN)(6)] electrodes are influenced significantly by the content of Fe(CN)(6) defects and coordinating water. Na2Co[Fe(CN)(6)] nanoparticles obtained by ESAC method exhibit excellent electrochemical performance, which deliver a high initial coulombic efficiency of 89.3%, stable cycling performance with a reversible capacity of 104 mAh g(-1) after 100 cycles and high rate capability of 75 mAh g(-1) at 500 mA g(-1). (C) 2018 Published by Elsevier Ltd.
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