汽车燃料电池用Mg10Ni合金的催化改性与活化性能
Catalytic modification and activation performance of Mg10Ni alloy for automotive fuel cells
许江 1李继超 2刘玉法3
作者信息
- 1. 四川职业技术学院汽车技术学院,四川遂宁,629000
- 2. 四川轻化工大学材料科学与工程学院,四川自贡 643002
- 3. 成都理工大学材料与化学化工学院,四川成都 610059
- 折叠
摘要
采用高能球磨法制备了 Mg10Ni-X合金(X=MWCNTs、TiF3、MWCNTs-TiF3),研究了单独添加MWCNTs/TiF3催化剂和复合添加MWCNTs-TiF3催化剂对Mg10Ni合金颗粒形貌、物相组成和活化行为的影响.结果表明,在Mg10Ni合金中添加催化剂,高能球磨处理后Mg10Ni-X合金的颗粒尺寸会不同程度地减小,相较于TiF3催化剂,MWCNTs催化剂对颗粒的细化效果更好,且复合添加MWCNTs-TiF3催化剂后颗粒的细化效果最好;复合添加MWCNTs-TiF3催化剂的Mg10Ni-MWCNTs-TiF3合金在高能球磨后,TiF3和MWCNTs各自的微观结构并没有发生改变,合金中Mg2Ni相含量和Mg2Ni相晶胞体积从大至小顺序为:Mg10Ni-MWCNTs-TiF3＞Mg10Ni-MWCNTs＞Mg10Ni-TiF3＞Mg10Ni.添加 MWCNTs 和 TiF3催化剂后合金的活化性能都会有不同程度改善,TiF3催化剂对活化性能的改善效果优于MWCNTs,且复合添加MWCNTs-TiF3催化剂后合金的活化性能最好.
Abstract
Mg10Ni-X alloys(X=MWCNTs,TiF3,MWCNTs-TiF3)were prepared by high-energy ball milling,the effects of MWCNTs/TiF3 catalysts added alone and MWCNTs TiF3 catalysts added together on the particle mor-phology,phase composition and activation behavior of Mg10Ni alloys were studied.The results show that the particle size of Mg10Ni-X alloy after high-energy ball milling treatment reduces in varying degrees by adding catalyst to Mg10Ni alloy.Compared with TiF3 catalyst,MWCNTs catalyst has better particle refining effect,and the particle refining effect of composite addition of MWCNTs-TiF3 catalyst is the best.After high-energy ball milling of Mg10Ni-MWCNTs-TiF3 alloy with MWCNTs-TiF3 catalyst,the microstructures of TiF3 and MWCNTs have not changed.The order of Mg2Ni phase content and Mg2Ni phase cell volume in the alloy from large to small is:Mg10Ni-MWCNTs-TiF3＞Mg10Ni-MWCNTs＞Mg10Ni-TiF3＞Mg10Ni.The activation performance of the alloy improves in varying degrees after the addition of MWCNTs and TiF3 catalysts,the improvement effect of TiF3 catalyst on the activation performance is better than MWCNTs,and the activation performance of the alloy after adding MWCNTs-TiF3 catalyst is the best.
关键词
Mg10Ni合金/催化剂/MWCNTs-TiF3/显微形貌和物相组成/活化性能Key words
Mg10Ni alloy/catalyzer/MWCNTs-TiF3/micromorphology and phase composition/activation property引用本文复制引用
出版年
2024
NETL
NSTL
万方数据