化工新型材料

化工新型材料 ›› 2021, Vol. 49 ›› Issue (2) : 122-124. DOI: 10.19817/j.cnki.issn 1006-3536.2021.02.028

新材料与新技术

氢燃料电池用镁-钛基合金储氢性能研究

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Study on hydrogen storage property of Mg-Ti based alloy for hydrogen fuel cell

Dou Jianzhi¹, Zhang Minggang¹, Li Kai², Gao Zhijie³

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Received		Published
2019-11-17		2021-02-20
Issue Date	Revised Date
2021-03-03	2019-11-17

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摘要

采用高能振动球磨法,制备了Mg₃₅Ti₆₅合金,并添加(10% La_0.4Ce_0.1Pr_0.3Nd_0.2Ni₄Co_0.5Mn_0.3Al_0.2)作为改性剂,制备了储氢合金Mg₃₅Ti₆₅/(10% La_0.4Ce_0.1Pr_0.3Nd_0.2Ni₄Co_0.5Mn_0.3Al_0.2),研究了改性剂的添加及球磨时间对合金显微组织、吸放氢性能的影响规律。结果表明:球磨Mg₃₅Ti₆₅时间为20h时,能获得单一的BCC固溶体相,加入质量分数为10%的改性剂球磨0.5h时能明显地改善其储氢性能,8MPa,573K下100s内吸氢质量能达到3%,随着球磨时间的增加,其相结构发生改变,吸氢量及动力学性能逐渐变差。

Abstract

The Mg₃₅Ti₆₅ hydrogen storage alloys were prepared by high-energy ball-milling,which added 10wt.% La_0.4Ce_0.1Pr_0.3Nd_0.2Ni₄Co_0.5Mn_0.3Al_0.2 as a modifier.The effects of modifier addition and milling time on the microstructure,hydrogen absorption properties of the alloys were studied.The results showed that the single BCC solid solution can be obtained after the Mg₃₅Ti₆₅ alloy was milled for 20h.Adding 10wt% modifier and milling for 0.5h,the hydrogen storage properties were obviously improved and its hydrogen storage capacity reached to 3wt.% at 8MPa hydrogen pressure and 573K within 100s.As increase of ball-milling time,the phase structure of Mg₃₅Ti₆₅ hydrides changed,the hydrogen absorption capacity and kinetics became worse gradually.

关键词

镁-钛储氢合金 / 改性 / 高能球磨 / 储氢性能

Key words

Mg-Ti hydrogen storage alloy / modification / high-energy ball-milling / hydrogen storage property

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氢燃料电池用镁-钛基合金储氢性能研究[J]. 化工新型材料, 2021, 49(2): 122-124 DOI:10.19817/j.cnki.issn 1006-3536.2021.02.028

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