Physicochemical, spectroscopic and electrochemical characterization of magnesium ion-conducting, room temperature, ternary molten electrolytes

Narayanana, N. S. Venkata ; Raj, B. V. Ashok ; Sampath, S. (2010) Physicochemical, spectroscopic and electrochemical characterization of magnesium ion-conducting, room temperature, ternary molten electrolytes Journal of Power Sources, 195 (13). pp. 4356-4364. ISSN 0378-7753

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Official URL: http://linkinghub.elsevier.com/retrieve/pii/S03787...

Related URL: http://dx.doi.org/10.1016/j.jpowsour.2010.01.070

Abstract

Room temperature, magnesium ion-conducting molten electrolytes are prepared using a combination of acetamide, urea and magnesium triflate or magnesium perchlorate. The molten liquids show high ionic conductivity, of the order of mS cm-1 at 298 K. Vibrational spectroscopic studies based on triflate/perchlorate bands reveal that the free ion concentration is higher than that of ion-pairs and aggregates in the melt. Electrochemical reversibility of magnesium deposition and dissolution is demonstrated using cyclic voltammetry and impedance studies. The transport number of Mg2+ ion determined by means of a combination of d.c. and a.c. techniques is ~0.40. Preliminary studies on the battery characteristics reveal good capacity for the magnesium rechargeable cell and open up the possibility of using this unique class of acetamide-based room temperature molten electrolytes in secondary magnesium batteries.

Item Type:Article
Source:Copyright of this article belongs to Elsevier Science.
Keywords:Room Temperature Molten Electrolyte; Acetamide-based Eutectics; Magnesium Ion-conductivity; Magnesium Rechargeable Battery
ID Code:57375
Deposited On:26 Aug 2011 08:09
Last Modified:26 Aug 2011 08:09

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