期刊
JOURNAL OF POWER SOURCES
卷 452, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.jpowsour.2020.227785
关键词
Butantetraol; Dithiothreitol; Aluminium anode; Electrolyte additives
资金
- NSFC [21776172]
- Science and Technology Commission of Shanghai Municipality [18DZ2204400]
- Shanghai Key Laboratory of Materials Protection and Advanced Materials in Electric Power
For alkaline aluminium/air battery, two original polyol compounds of butantetraol and dithiothreitol are proposed to act as electrolyte additives. It shows that they can retard the self-corrosion of aluminium anode, and enhance its performance effectively. Dithiothreitol has a stronger ability to increase the discharge capacity than butantetraol. The improvement is mainly attributed to the suppression of the side reaction of hydrogen evolution. The formation of the six-membered ring complexes formed by dithiothreitol and aluminium ions is certified by the Fourier transform infrared spectroscopy (FT-IR). The surface morphology and composition of the aluminium anode are characterised by the scanning electron microscope (SEM) and the X-ray photoelectron spectroscopy (XPS) analysis. It shows that dithiothreitol can form a uniform and stable protective layer through dynamic covalent bonds on aluminium anode surface.
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