Journal article
High-Performance Magnesium Electrochemical Cycling with Hybrid Mg-Li Electrolytes
M Krebsz, S Johnston, CK Nguyen, Y Hora, B Roy, AN Simonov, DR Macfarlane
ACS Applied Materials and Interfaces | AMER CHEMICAL SOC | Published : 2022
Abstract
Kinetics and coulombic efficiency of the electrochemical magnesium plating and stripping processes are to a significant extent defined by the composition of the electrolyte solution, optimization of which presents a pathway for improved performance. Adopting this strategy, we undertook a systematic investigation of the Mg0/2+process in different combinations of the Mg2+-Li+-borohydride-bis(trifluoromethylsulfonyl)imide (TFSI-) electrolytes in 1,2-dimethoxyethane (DME) solvent. Results indicate that the presence of BH4-is essential for high coulombic efficiency, which coordination to Mg2+was confirmed by Raman and NMR spectroscopic analysis. However, the high rates observed also require the p..
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Awarded by Australian Research Council
Funding Acknowledgements
The authors are grateful to Dr Jacinta Bakker (Monash University) for the synthesis of [P 6,6,6,14] [TFSI] salt and to Dr Alasdair McKay (Monash University) for the low-temperature NMR measurements. The authors acknowledge Australian Renewable Energy Agency (project DM015) and Australian Research Council (Centre of Excellence CE140100012; Future Fellowship to ANS FT200100317) for the financial support, as well as Monash Centre for Electron Microscopy and Monash X-ray platform for the access to SEM, XRD, and XPS facilities.