Electrochemical Performance of 1-Ethyl-3-Methylimidazolium Bis(Trifluoromethylsulfonyl)Imide Ionic Liquid as Electrolyte for Primary Mg-Air Batteries. Issue 6 (1st January 2019)

• Record Type: Journal Article
• Authors: Zhang, Jingli; Ma, Jingling; Wang, Guangxin; Li, Yaqiong; Volinsky, Alex A.
• Is Part Of: Journal of the Electrochemical Society. Volume 166:Issue 6(2019)
• Page Start: A1103
• Page End: A1106
• Publication Date: 2019-01-01
• Subjects: Batteries -- additives -- ionic liquid -- Mg-air primary battery; Electrochemistry -- Periodicals; 541.3705
• DOI: 10.1149/2.0821906jes
• Languages: English
• ISSNs: 0013-4651

Abstract

Abstract : Ionic liquids are promising electrolytes for the primary Mg-air batteries. Three electrolytes, including pure 1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide ionic liquid, 50 mol.% butyl acetate and 50 mol.% water were studied. Attenuated total reflectance Fourier transform infrared spectroscopy, scanning electron microscopy and electrochemical impedance spectroscopy were used to examine discharge performance and the effects of butyl acetate and water additions. Galvanostatic measurements indicate that butyl acetate is an excellent additive, which can significantly improve the battery performance by reducing electrolyte impedance by increasing conductivity. However, while water also improved electrolyte discharge performance, it was consumed by the hydrogen evolution reaction over the 72 h discharge.