In situ electrochemical-X-ray Photoelectron Spectroscopy: Rubidium metal deposition from an ionic liquid in competition with solvent breakdown

Rahmat Wibowo, Leigh Aldous, Robert M.J. Jacobs, Ninie S.A. Manan, Richard G. Compton

Research output: Contribution to journalArticlepeer-review

19 Citations (Scopus)

Abstract

The electrodeposition of rubidium from an ionic liquid (IL) N-butyl-N-methylpyrrolidium bis(trifluoromethylsulfonyl)imide ([C 4mpyrr][NTf2]) has been performed and monitored at a Nickel mesh electrode by using in situ electrochemical-X-ray Photoelectron Spectroscopy (XPS) measurements. At extremely high current values during the deposition of the metal, the solvent breakdown was also observed. By choosing suitable low current values, electrodeposition of Rb can be promoted over the IL degradation. IL degradation was characterised by carbonisation of the electrode-IL-vacuum interface, with the loss of fluorine being relatively pronounced, consistent with reduction of the [NTf2]- anion.

Original languageEnglish
Pages (from-to)103-107
Number of pages5
JournalChemical Physics Letters
Volume517
Issue number1-3
DOIs
Publication statusPublished - 28 Nov 2011

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