期刊
CHEMSUSCHEM
卷 9, 期 16, 页码 2103-2111出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/cssc.201600298
关键词
aluminum; batteries; electrochemistry; energy conversion; interfaces
资金
- Russian Ministry of Education
- INREP-Israel National Research Center for Electrochemical Propulsion
- Nancy and Stephen Grand Technion Energy Program (GTEP)
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 (3vol%) to the 5m 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.
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