A Scientific Study of Current Collectors for Mg Batteries in Mg(AlCl2EtBu)2/THF Electrolyte
Open Access
- 19 December 2012
- journal article
- Published by The Electrochemical Society in Journal of the Electrochemical Society
- Vol. 160 (2) , A351-A355
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.Keywords
This publication has 28 references indexed in Scilit:
- Structure and compatibility of a magnesium electrolyte with a sulphur cathodeNature Communications, 2011
- Potential positive electrodes for high-voltage magnesium-ion batteriesJournal of Materials Chemistry, 2011
- Rechargeable Mg Batteries with Graphene‐like MoS2 Cathode and Ultrasmall Mg Nanoparticle AnodeAdvanced Materials, 2010
- Mesoporous magnesium manganese silicate as cathode materials for rechargeable magnesium batteriesChemical Communications, 2010
- Magnesium nanostructures for energy storage and conversionJournal of Materials Chemistry, 2009
- A new class of cathode materials for rechargeable magnesium batteries: Organosulfur compounds based on sulfur–sulfur bondsElectrochemistry Communications, 2007
- Metallic Magnesium Nano/Mesoscale Structures: Their Shape‐Controlled Preparation and Mg/Air Battery ApplicationsAngewandte Chemie International Edition, 2006
- TiS2 nanotubes as the cathode materials of Mg-ion batteriesChemical Communications, 2004
- Prototype systems for rechargeable magnesium batteriesNature, 2000
- Reversibility of electrochemical magnesium deposition from Grignard solutionsJournal of Applied Electrochemistry, 1997