A scientific study of current collectors for Mg batteries in Mg(AlCl 2EtBu)2/THF electrolyte

Dongping Lv, Terrence Xu, Partha Saha, Moni Kanchan Datta, Mikhail L. Gordin, Ayyakkannu Manivannan, Prashant N. Kumta, Donghai Wang

Research output: Contribution to journalArticle

68 Citations (Scopus)

Abstract

The electrochemical behavior and stability of several current collectors (copper, nickel, stainless steel 316L, aluminum, titanium) potentially employed in magnesium batteries with non-aqueous Mg(AlCl2EtBu)2/THF electrolyte have been investigated in both three-electrode electrochemical cell and coin cell configurations. Linear sweep voltammetry and coin cell charge/discharge measurements indicate that copper, widely used in the literature as a current collector in this electrolyte, is not stable and undergoes pitting corrosion above ̃1.8 V. Cyclic voltammetry shows that copper undergoes electrochemical oxidation and reduction in the electrolyte, which was further confirmed by inductively coupled plasma atomic emission spectroscopy (ICP-AES), scanning electron microscopy (SEM), and energy-dispersive X-ray spectroscopy (EDX) analyses. Among the current collectors studied, nickel shows excellent electrochemical stability up to ̃2.2 V and high efficiency for magnesium deposition and dissolution processes in the electrolyte, indicating that it is a strong candidate as both cathode and anode current collectors in magnesium batteries.

Original languageEnglish (US)
Pages (from-to)A351-A355
JournalJournal of the Electrochemical Society
Volume160
Issue number2
DOIs
StatePublished - Apr 2 2013

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Electrolytes
Magnesium
Copper
Nickel
Atomic emission spectroscopy
Electrochemical cells
Electrochemical oxidation
Stainless Steel
Inductively coupled plasma
Voltammetry
Pitting
Titanium
Aluminum
Cyclic voltammetry
Anodes
Dissolution
Cathodes
Stainless steel
Corrosion
Scanning electron microscopy

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Renewable Energy, Sustainability and the Environment
  • Surfaces, Coatings and Films
  • Electrochemistry
  • Materials Chemistry

Cite this

Lv, Dongping ; Xu, Terrence ; Saha, Partha ; Datta, Moni Kanchan ; Gordin, Mikhail L. ; Manivannan, Ayyakkannu ; Kumta, Prashant N. ; Wang, Donghai. / A scientific study of current collectors for Mg batteries in Mg(AlCl 2EtBu)2/THF electrolyte. In: Journal of the Electrochemical Society. 2013 ; Vol. 160, No. 2. pp. A351-A355.
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A scientific study of current collectors for Mg batteries in Mg(AlCl 2EtBu)2/THF electrolyte. / Lv, Dongping; Xu, Terrence; Saha, Partha; Datta, Moni Kanchan; Gordin, Mikhail L.; Manivannan, Ayyakkannu; Kumta, Prashant N.; Wang, Donghai.

In: Journal of the Electrochemical Society, Vol. 160, No. 2, 02.04.2013, p. A351-A355.

Research output: Contribution to journalArticle

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