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Anions for lithium battery electrolytes: A spectroscopic and theoretical study of the B(CN)4- anion of the ionic liquid C2mim[B(CN)4]

Johan Scheers (Institutionen för teknisk fysik, Kondenserade materiens fysik) ; Patrik Johansson (Institutionen för teknisk fysik, Kondenserade materiens fysik) ; Per Jacobsson (Institutionen för teknisk fysik, Kondenserade materiens fysik)
Journal of the Electrochemical Society (0013-4651). Vol. 155 (2008), 9, p. A628-A634.
[Artikel, refereegranskad vetenskaplig]

On the basis of computations, the B(CN)4 - (bison) anion is shown to be of interest as a fluorine-free alternative in lithium-conducting electrolytes. Compared to PF6 - the bison anion has an equally high stability toward oxidation, while at the same time offering a large reduction of the lithium-ion pair dissociation energy. The bison anion is readily available in a number of ambient-temperature ionic liquids (ILs). In this work, the Raman spectrum of the IL C2mim [B(CN)4] reveals an almost unperturbed bison anion and, consequently, the effects of the anion on the Raman shifts of C2mim + are also very small. © 2008 The Electrochemical Society.

Denna post skapades 2008-12-09. Senast ändrad 2016-09-14.
CPL Pubid: 80583


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New anions for lithium battery electrolytes