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Improvement of Aluminum–Air Battery Performances by the Application of Flax Straw Extract
Author(s) -
Grishina Ekaterina,
Gelman Danny,
Belopukhov Sergey,
Starosvetsky David,
Groysman Alec,
EinEli Yair
Publication year - 2016
Publication title -
chemsuschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.412
H-Index - 157
eISSN - 1864-564X
pISSN - 1864-5631
DOI - 10.1002/cssc.201600298
Subject(s) - straw , corrosion , electrolyte , electrochemistry , anode , chemistry , battery (electricity) , aluminium , dielectric spectroscopy , fourier transform infrared spectroscopy , materials science , chemical engineering , nuclear chemistry , inorganic chemistry , electrode , organic chemistry , power (physics) , physics , quantum mechanics , engineering
Abstract The effect of a flax straw extract on Al corrosion inhibition in a strong alkaline solution was studied by using electrochemical measurements, weight‐loss analysis, SEM, and FTIR spectroscopy. Flax straw extract added (3 vol %) to the 5 m KOH solution to act as a mixed‐type Al corrosion inhibitor. The electrochemistry of Al in the presence of a flax straw extract in the alkaline solution, the effect of the extract on the Al morphology and surface films formed, and the corrosion inhibition mechanism are discussed. Finally, the Al–air battery discharge capacity recorded from a cell that used the flax straw extract in the alkaline electrolyte is substantially higher than that with only a pure alkaline electrolyte. This improved sustainability of the Al anode is attributed to Al corrosion inhibition and, consequently, to hydrogen evolution suppression.