In:
ECS Meeting Abstracts, The Electrochemical Society, Vol. MA2020-02, No. 59 ( 2020-11-23), p. 3007-3007
Abstract:
The research and development of magnesium secondary batteries using magnesium anode have been attracted much attention as one of the prospective post-lithium ion batteries due to the high theoretical capacity (3830 Ah/dm 3 ) and without no resource constraints. However, it has been quite difficult to construct the magnesium batteries because practical electrolytes for the battery has not yet been developed. We previously reported that TFSA-based ILs were not suitable for a Mg anode even in alkali metal binary molten salt such as MgTFSA 2 -KTFSA, which indicated that the existence of the TFSA anion disturbed a magnesium redox on Mg electrodes. [1] On the other hand, relatively smooth magnesium redox could be observed in 1-butyl-3-methylimidazolium chloride melts containing Mg[TFSA] 2 . [2] However, the electrochemical window of the imidazolium melt was limited by the reduction decomposition of the imidazolium. In this study, we reported that ambient temperature molten chlorides could be obtained by mixing a quaternary ammonium chloride and MgCl 2 , which did not contain the TFSA anion and also imidazolium cations. The thermal properties and also physicochemical properties were investigated. The electrochemical response of a magnesium metal in the melt were also shown to indicate the possibility as an electrolyte for a magnesium anode battery. [1] K. Kubota, H. Matsumoto, J. Electrochem. Soc ., 167 (2020) 020541. [2] H. Matsumoto, K. Kubota, ECS Transactions , 86 (14) (2018) 21.
Type of Medium:
Online Resource
ISSN:
2151-2043
DOI:
10.1149/MA2020-02593007mtgabs
Language:
Unknown
Publisher:
The Electrochemical Society
Publication Date:
2020
detail.hit.zdb_id:
2438749-6
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