Differential Electrochemical Mass Spectrometry of Carbon Felt Electrodes for Vanadium Redox Flow Batteries | Zendy

László Eifert | Zendy; Z. Jusys | Zendy; Rupak Banerjee | Zendy; R. Jürgen Behm | Zendy; Roswitha Zeis | Zendy

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Differential Electrochemical Mass Spectrometry of Carbon Felt Electrodes for Vanadium Redox Flow Batteries

Author(s) -

László Eifert,

Z. Jusys,

Rupak Banerjee,

R. Jürgen Behm,

Roswitha Zeis

Publication year - 2018

Publication title -

acs applied energy materials

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.833

H-Index - 36

ISSN - 2574-0962

DOI - 10.1021/acsaem.8b01550

Subject(s) - coulometry , vanadium , electrochemistry , redox , cyclic voltammetry , oxidizing agent , electrolyte , chemistry , electrode , mass spectrometry , carbon fibers , inorganic chemistry , analytical chemistry (journal) , electrochemical cell , flow battery , supporting electrolyte , voltammetry , materials science , chromatography , organic chemistry , composite material , composite number

We successfully conducted electrochemical and online mass spectrometric measurements on commercial carbon felt electrodes with a differential electrochemical spectrometry setup. Its capability is demonstrated by simultaneous mass spectrometric and electrochemical measurements. Half-cell tests, such as cyclic voltammetry, and coulometry of the redox couples can be performed under stopped flow of the electrolyte. We use different potential windows, and two types of electrolytes while monitoring potential dependent H-2, O-2 and CO2 formation. At oxidizing potentials, we did not observe oxygen evolution, only carbon corrosion. An increase in CO2 and H-2 formation at high and low potentials in the presence of vanadium is observed.

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