Discharge behaviour and interfacial properties of a magnesium battery incorporating trihexyl(tetradecyl)phosphonium based ionic liquid electrolytes

被引：41

作者：

Khoo, Timothy ^{[1
,4
]}

Somers, Anthony ^{[2
]}

Torriero, Angel A. J. ^{[2
]}

MacFarlane, Douglas R. ^{[3
,4
]}

Howlett, Patrick C. ^{[2
,4
]}

Forsyth, Maria ^{[2
,4
]}

机构：

[1] Monash Univ, Dept Mat Engn, Melbourne, Vic 3800, Australia

[2] Deakin Univ, Inst Frontier Mat, Melbourne, Vic 3125, Australia

[3] Monash Univ, Sch Chem, Melbourne, Vic 3800, Australia

[4] Australian Res Council, Ctr Excellence Electromat Sci, Canberra, ACT, Australia

来源：

ELECTROCHIMICA ACTA | 2013年 / 87卷

基金：

澳大利亚研究理事会;

关键词：

Ionic liquid; Trihexyl(tetradecyl)phosphonium chloride; Mg-air; Magnesium battery; Interface; AIR BATTERIES;

D O I：

10.1016/j.electacta.2012.09.072

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Magnesium-air batteries are a promising high-energy density power source that utilises an active magnesium electrode and oxygen. Herein, the magnesium surface formed during 0.2 mA/cm(2) galvanostatic discharge in trihexy(tetradecyl)phosphonium chloride ionic liquid electrolyte was characterised using FTIR, XPS and mass spectroscopy and the complex nature of the interfacial film formed is described. This film has a conductive gel-like structure and consists of hydrated organophosphonium magnesium(hydroxyl)chlorides. A laboratory synthesised form of the gel showed comparable discharge behaviour and was able to support a discharge current of 0.05 mA/cm(2). The ionic liquid is shown to support oxygen reduction currents of greater than 0.8 mA/cm(2), suggesting that this electrolyte is a suitable candidate for magnesium-air battery applications. (C) 2012 Elsevier Ltd. All rights reserved.

引用

页码：701 / 708

页数：8

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