氢燃料电池用镁-钛基合金储氢性能研究  

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

作　　者：窦建芝[1] 张明岗[1] 李凯 高志杰 Dou Jianzhi;Zhang Minggang;Li Kai;Gao Zhijie(School of Applied Chemistry,Food and Pharmacy,Weifang Engineering Vocational College,Qingzhou 262500;Tianmen Municipal Bureau of Housing and Urban-Rural Development,Tianmen 431700;Department of Chemical Engineering and Safety,Binzhou University,Binzhou 256600)

机构地区：[1]潍坊工程职业学院,应用化学与食品药品学院,青州262500 [2]天门市住房和城乡建设局,天门431700 [3]滨州学院化工与安全学院,滨州256600

出　　处：《化工新型材料》2021年第2期122-124,129,共4页New Chemical Materials

基　　金：山东自然科学基金项目(ZR2014EMP012);滨州市科技发展计划项目(2014ZC0216)。

摘　　要：采用高能振动球磨法,制备了Mg_(35)Ti_(65)合金,并添加(10%La_(0.4)Ce_(0.1)Pr_(0.3)Nd_(0.2)Ni_4Co_(0.5)Mn_(0.3)Al_(0.2))作为改性剂,制备了储氢合金Mg_(35)Ti_(65)/(10%La_(0.4)Ce_(0.1)Pr_(0.3)Nd_(0.2)Ni_4Co_(0.5)Mn_(0.3)Al_(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Mg_(35)Ti_(65)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。The Mg_(35)Ti_(65) hydrogen storage alloys were prepared by high-energy ball-milling,which added 10 wt.%La_(0.4)Ce_(0.1)Pr_(0.3)Nd_(0.2)Ni_(4)Co_(0.5)Mn_(0.3)Al_(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 Mg_(35)Ti_(65)alloy was milled for 20 h.Adding 10 wt%modifier and milling for 0.5 h,the hydrogen storage properties were obviously improved and its hydrogen storage capacity reached to 3 wt.%at 8 MPa hydrogen pressure and 573 K within 100 s.As increase of ball-milling time,the phase structure of Mg_(35)Ti_(65)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 

分 类 号：TG146.22[一般工业技术—材料科学与工程]