Anion intercalation into graphite from a sodium-containing electrolyte. (20th August 2015)

• Record Type: Journal Article
• Authors: Bordet, François; Ahlbrecht, Katharina; Tübke, Jens; Ufheil, Joachim; Hoes, Thorsten; Oetken, Marco; Holzapfel, Michael
• Is Part Of: Electrochimica acta. Volume 174(2015)
• Page Start: 1317
• Page End: 1323
• Publication Date: 2015-08-20
• Subjects: Anion intercalation -- Dual-ion cell -- Sodium-based electrolyte -- Graphite cathode; Electrochemistry -- Periodicals; Electrochemistry, Industrial -- Periodicals; 541.37
• DOI: 10.1016/j.electacta.2015.06.095
• Languages: English
• ISSNs: 0013-4686

Abstract

Abstract: The stability of aluminum and nickel as a current collector was investigated at high potentials in the presence of 0.5 M NaPF6 or 0.1 M NaBF4 dissolved in EC:DEC (1:1 wt.-%). Cyclovoltammetry showed that nickel is unstable under experimental conditions, whereas aluminum is electrochemically stable and can be used as a current collector. The feasibility of sodium-based dual-ion cells was studied with self-prepared graphite electrodes in the presence of both electrolytes. The cells showed a fairly stable reversible specific capacity of 15 mAh/g for NaBF4 and 55 mAh/g for NaPF6 .