Jump to main content
Jump to site search

Issue 25, 2017
Previous Article Next Article

Coupling of nitroxyl radical as an electrochemical charging catalyst and ionic liquid for calcium plating/stripping toward a rechargeable calcium–oxygen battery

Author affiliations

Abstract

There are two problems to overcome to realize a non-aqueous rechargeable calcium–oxygen battery: lack of a catalyst for decomposing calcium oxide (CaO) as the main discharge product, and irreversible deposition/dissolution of Ca2+ at the anode. First, the catalytic capability of 2,2,6,6-tetramethylpiperidine 1-oxyl (TEMPO)–anion complex to decompose CaO at the O2 electrode was examined. Charge transfer from the TEMPO–anion complex to CaO occurred, leading to effective decomposition of CaO. Second, the deposition/dissolution behavior of Ca2+ was investigated in N,N-diethyl-N-methyl-N-(2-methoxyethyl) ammonium bis(trifluoromethanesulfonyl) amide at 60 °C. We observed partially reversible Ca plating/stripping under a high sweep rate in the ionic liquid. Finally we fabricated a rechargeable Ca–O2 battery using the TEMPO catalyst for the cathode, Ca chips for the anode, and an ionic liquid, and demonstrated that the battery showed repeated discharge/charge performance.

Graphical abstract: Coupling of nitroxyl radical as an electrochemical charging catalyst and ionic liquid for calcium plating/stripping toward a rechargeable calcium–oxygen battery

Back to tab navigation

Supplementary files

Publication details

The article was received on 20 Apr 2017, accepted on 26 May 2017 and first published on 26 May 2017


Article type: Paper
DOI: 10.1039/C7TA03422A
Citation: J. Mater. Chem. A, 2017,5, 13212-13219
  •   Request permissions

    Coupling of nitroxyl radical as an electrochemical charging catalyst and ionic liquid for calcium plating/stripping toward a rechargeable calcium–oxygen battery

    T. Shiga, Y. Kato and Y. Hase, J. Mater. Chem. A, 2017, 5, 13212
    DOI: 10.1039/C7TA03422A

Search articles by author

Spotlight

Advertisements