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Electrolytic Conditioning of a Magnesium Aluminum Chloride Complex for Reversible Magnesium Deposition
- Source :
- The Journal of Physical Chemistry C. 118:27623-27630
- Publication Year :
- 2014
- Publisher :
- American Chemical Society (ACS), 2014.
-
Abstract
- We describe in this report the electrochemistry of Mg deposition and dissolution from the magnesium aluminum chloride complex (MACC). The results define the requirements for reversible Mg deposition and definitively establish that voltammetric cycling of the electrolyte significantly alters its composition and performance. Elemental analysis, scanning electron microscopy, and energy-dispersive X-ray spectroscopy (SEM-EDS) results demonstrate that irreversible Mg and Al deposits form during early cycles. Electrospray ionization mass spectrometry (ESI-MS) data show that inhibitory oligomers develop in THF-based solutions. These oligomers form via the well-established mechanism of a cationic ring-opening polymerization of THF during the initial synthesis of the MACC and under resting conditions. In contrast, MACC solutions in 1,2-dimethoxyethane (DME), an acyclic solvent, do not evolve as dramatically at open circuit potential. From these results, we propose a mechanism describing how the conditioning proces...
- Subjects :
- Magnesium
Electrospray ionization
Inorganic chemistry
Cationic polymerization
chemistry.chemical_element
Electrolyte
Electrochemistry
Chloride
Surfaces, Coatings and Films
Electronic, Optical and Magnetic Materials
General Energy
chemistry
Polymerization
medicine
Physical and Theoretical Chemistry
Dissolution
medicine.drug
Subjects
Details
- ISSN :
- 19327455 and 19327447
- Volume :
- 118
- Database :
- OpenAIRE
- Journal :
- The Journal of Physical Chemistry C
- Accession number :
- edsair.doi...........aa34208191797d103d0b87d1454d6749