期刊
SURFACE & COATINGS TECHNOLOGY
卷 201, 期 6, 页码 3783-3787出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.surfcoat.2006.03.020
关键词
mixed ionic liquid; electrolyte; deposition and dissolution; magnesium; overpotential
In this paper we reported for the first time mixing two ionic liquids of 1-n-butyl-3-methylimidazolium tetrafluoroborate (BMIMBF4) and N-methyl-N-propylpiperidinium bis(ttifluoromethanesulfonyl)imide (PP13-TFSI) in the presence of 0.3 M Mg(CF3SO3)(2) for use as electrolyte of reversible magnesium deposition and dissolution. Three kinds of mixture with volume ratios of 2:1, 3:1 and 4:1 for BMIMBF4 and PP13-TFSI were chosen and the magnesium deposition-dissolution process was investigated via coin cells. The mixed solution provided lower initial deposition-dissolution overpotential than every single ionic liquid system and the overpotential decreased with increasing the content of BMIMBF4. The mixture with 4:1 exhibited extreme low initial overpotential and the reversible process can be maintained over 200 cycles. (c) 2006 Elsevier B.V. All rights reserved.
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