摘要
采用水热法合成纳米Ce1-x(Eu0.5La0.5)xO2(x=0、0.04)固溶体,系统研究固溶体在球磨条件下对Mg2Ni合金储氢性能的催化作用。XRD结果表明,随着Ce1-x(Eu0.5La0.5)xO2添加量的增大及球磨时间的延长,样品的非晶纳米晶含量增加;SEM结果显示,催化剂均匀分布在合金表面,随着球磨时间延长,团聚现象减少;催化剂对球磨样品的活性、最大放电容量和高倍率放电性能均有良好的催化作用,掺杂固溶体比纯CeO2具有更好的催化活性。
Cel-x （Eu0.5 La0.5）xO2（x =0, 0.04） solid solutions were synthesized via hydrothermal method Tne ca- talysis effects of solid solutions on Mg2Ni hydrogen storage properties were researched under ball milling process. XRD results showed that the particle size was reduced by adding more catalyst and extending ball-mill- ing time. SEM indicated that the catalyst distributed uniformly on the surface of alloys, the degree of aggrega- tion was reduced by prolonging the milling time. The electrochemical results showed that maximum discharge capacity and activation performance was enhanced, and the high rate discharge capacity showed the similar re- sults, The doped solid solutions exhibited better catalysis effects than the pure CeO2. Key words： CeO2-based solid solutions; ball-milling; Mg2 Ni alloy; catalysis effect; electrochemical property
出处
《功能材料》
EI
CAS
CSCD
北大核心
2013年第17期2516-2519,共4页
Journal of Functional Materials
基金
内蒙古自然科学基金资助项目(2013MS0806)
内蒙古科技大学创新基金资助项目(2012NCL043)
作者简介
张国芳（1981一），女，内蒙古呼伦贝尔人，讲师，在读博士，师承葛启录、张羊换教授，主要从事储氢材料及稀土功能纳米材料方面的研究。通讯作者：张国芳
