HYDROGEN STORAGE PROPERTIES OF Mg MODIFIED BY TETRAHYDROFURAN

Acta Metall Sin

1990, Vol. 26

Issue (3): 40-43 DOI:

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HYDROGEN STORAGE PROPERTIES OF Mg MODIFIED BY TETRAHYDROFURAN

AO Ming;WANG Qidong zhejiang University; Hangzhou Department of Materials Science;Zhejiang University;Hangzhou 310013

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AO Ming;WANG Qidong zhejiang University; Hangzhou Department of Materials Science;Zhejiang University;Hangzhou 310013. HYDROGEN STORAGE PROPERTIES OF Mg MODIFIED BY TETRAHYDROFURAN. Acta Metall Sin, 1990, 26(3): 40-43.

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Abstract The hydriding and dehydriding properties, electronic structure, crysta-lline structure and micomorphology of Mg modificd by tetrahydrofuran, as well asthe stabllity of its hydride have been investigated. Experimental results show thatafter 20 cycles of hydriding and dehydriding, the modified Mg may absorb 3.5 wt-%hydrogen at 643 K under 3.5 MPa H_2, and evacuate 3.2 wt-% hydrogen at 642 Kunder vacuum. The tetrahydrofuran may cause the change of electron structure ofMg, but not change the crystalline structure. It was found a new hydride phasebesides MgH_2 in the hydrided products. The distortion in great extent may be result-ed by the hydriding transformation as the polycrystalline hydride formed in Mgand the slip band and twin widely spreaded in the crystals of Mg hydride.

Key words: Mg tetrahydrofuran hydride hydrogen storage property

Received: 18 March 1990

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https://www.ams.org.cn/EN/ OR https://www.ams.org.cn/EN/Y1990/V26/I3/40

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