Journal Article

FZJ-2023-01943

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Breaking the passivity wall of metals: Exempli gratia non-aqueous Ti–air battery

Durmus, Y. E. (First author)FZJ* ; Kaltenberg, M.FZJ*RWTH* ; Dzieciol, K.FZJ* ; Schalenbach, M.FZJ* ; Gelman, D. ; Shvartsev, B. ; Tempel, H.FZJ* ; Kungl, H.FZJ* ; Eichel, R.-A. (Corresponding author)FZJ*RWTH* ; Ein-Eli, Y. (Corresponding author)FZJ*

2023
Elsevier Amsterdam

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Please use a persistent id in citations: doi:10.1016/j.cej.2023.141903  doi:10.34734/FZJ-2023-01943

Abstract: A new multivalent metal–air battery employing Titanium (Ti) as active material in EMIm(HF)2.3F room temperature ionic liquid electrolyte is introduced. Ti metal is highly attractive as it is a light metal that can possibly transfer up to 4 electrons. The electrochemical behavior of Ti is known for its passivity in various media. Here, we evaluated the electrochemistry of Ti in EMIm(HF)2.3F with potentiodynamic polarization and galvanostatic discharge experiments. Ti–air battery could successfully be operated under relatively high current densities (up to 0.75 mA cm−2) with an average cell voltage of 1–1.2 V, yielding up to a discharge capacity of 66 mAh cm−2. When its full potential is harvested, such a metal–battery holds a unique potential to be the only metal with 4 electrons transfer during its discharge.

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Contributing Institute(s):

1. Grundlagen der Elektrochemie (IEK-9)

Research Program(s):

1. 1223 - Batteries in Application (POF4-122) (POF4-122)
2. iNEW2.0 (BMBF-03SF0627A) (BMBF-03SF0627A)
3. HITEC - Helmholtz Interdisciplinary Doctoral Training in Energy and Climate Research (HITEC) (HITEC-20170406) (HITEC-20170406)

Appears in the scientific report 2023

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