具有抗氧化性的Al-Bi(C2H5OH)3-C多孔块体制氢材料

doi:10.11896/cldb.24030133

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Abstract For improving the hydrogen production performance of Al-based composites, Al-Bi(C₂H₅OH)₃-C bulk hydrogen generation materials were prepared by high-energy ball milling and spark plasma sintering (SPS), using bismuth acetate (Bi(C₂H₅OH)₃) and different carbon mate-rials as additives. The samples were characterized by X-ray photoelectron spectroscopy (XRD), scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS) and Raman spectroscopy. Moreover, the efficiency of hydrogen generation and oxidation resistance of the Al-based bulk materials as well as the action mechanism of additives for increasing hydrolytic activity of Al were investigated. The results demonstrate that Al-5% Bi(C₂H₅OH)₃-3% CNTs (if not specified, are mass fraction) bulk material has high reactivity, and its hydrogen yield reaches 1 275.4 mL·g^-1 at 333.15 K, which is 31.7% higher than the powder material. And the hydrogen yield of the bulk material still holds 921.5 mL·g^-1 after exposed to the air for 35 days, while the powder material basically do not produce hydrogen. It proves that the SPS treatment significantly enhances the oxidation resistance of aluminum-based materials. The XRD and SEM analysis displays that the treatment of SPS causes cracks on the surface of Al particles, as well as the gas by the decomposition of Bi(C₂H₅OH)₃ leads to the formation of a porous structure inside the Al-based bulk. They facilitate contact between Al and water. Meanwhile, the synergistic effect of CNTs (Carbon nanotubes) with more defects and in-situ formed Bi₂O₃ and Bi is another factor that improves the hydrogen production performance of the bulk materials.

Key words： Al-based bulk materials for hydrogen generation hydrogen generation performance oxidation resistance spark plasma sintering technology carbon nanotubes

Published: 25 April 2025 Online: 2025-04-18

CLC number:

C01B3/08

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	Articles by authors
	WU Jinfan
	XU Fen
	SUN Lixian
	LIAO Lumin
	GUAN Yanxun

Cite this article:

WU Jinfan,XU Fen,SUN Lixian, et al. Al-Bi(C₂H₅OH)₃-C Oxidation-resistant Bulk Materials for Hydrogen Generation[J]. Materials Reports, 2025, 39(8): 24030133-6.

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https://www.mater-rep.com/EN/10.11896/cldb.24030133 OR https://www.mater-rep.com/EN/Y2025/V39/I8/24030133

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