Synthesis of copper hexacyanoferrate nanoflake as a cathode for sodium-ion batteries. Issue 1 (January 2019)

• Record Type: Journal Article
• Authors: Ma, Xiao-Hang; Jia, Wei; Wang, Jiao; Zhou, Jia-Hao; Wu, Yao-Dong; Wei, Yi-Yong; Zi, Zhen-Fa; Dai, Jian-Ming
• Is Part Of: Ceramics international. Volume 45:Issue 1(2019)
• Page Start: 740
• Page End: 746
• Publication Date: 2019-01
• Subjects: Glycol-assisted coprecipitation method -- Copper hexacyanoferrate -- Nanoflake -- Cathode -- Sodium-ion batteries; Ceramics -- Periodicals; Céramique industrielle -- Périodiques; Ceramics; Periodicals; Electronic journals; 666
• DOI: 10.1016/j.ceramint.2018.09.238
• Languages: English
• ISSNs: 0272-8842

Abstract

Abstract: Prussian blue analogues are considered as the promising cathodes for sodium-ion batteries. Since the electrochemical properties are closely related to the morphology, the monodisperse copper hexacyanoferrate nanoflakes with highly crystalline are synthesized by a glycol-assisted coprecipitation method and a tentative synthetic mechanism is proposed to explain the formation of nanostructures. The structure and electrochemical properties are characterized by X-ray photoelectron spectroscopy, FTIR spectra and galvanostatic cycle tests, respectively. Due to the novel architecture of copper hexacyanoferrate, a high electrochemical activity is obtained, resulting a high initial coulombic efficiency of 93%, a capacity retention of 73% at 1 C after 300 cycles and 51 mAh g −1 is maintained at high rate of 15 C at 25 °C.