摘要
为了研究钛对Mg_2Ni贮氢材料性能的影响,在Mg_2Ni合金中添加不同含量的合金元素钛,并进行了显微组织、吸放氢性能和循环稳定性的测试与分析。结果表明:钛的添加有利于细化晶粒,提高材料的吸放氢性能和循环稳定性。与不添加钛(Mg_2Ni)相比,添加8.233%钛时(Mg_2NiTi_(0.2))的平均晶粒尺寸减小55.63%、最大吸氢量增大47.37%、充放电循环20次后放电容量衰减率减小48.80%、吸氢饱和时间和放氢平台压力基本不变。Mg_2Ni贮氢材料中钛的含量优选为8.233%。
In order to study the effects of titanium on the properties of Mg2 Ni hydrogen storage materials, various contents of alloying element titanium was added in the hydrogen storage alloy Mg2Ni,and the microstructure, hydrogen absorption and desorption performances and cycle stability of the material were tested and analyzed. The results show that titanium could refine the grain and improve the hydrogen absorption and desorption performances as well as the cycle stability of the material. Compared to the material without titanium （Mg2Ni）, the average grain size of Mg2NiTi0.2 alloy decreases by 55.63% while the maximum absorption of hydrogen increases by 47.37%, and the discharge capacity decay ratio decreases by 48.80% after 20 times of charge and discharge cycles with hydrogen hydrogen release platform pressure essentially unchanged, at the optimum absorption saturation time and content of 8. 233% titanium.
作者
徐海
张玉
Xu Hai Zhang Yu(Henan Polytechnic, Zhengzhou 450046, Henan, China School of Materials Engineering, Yantai University, Yantai 264005, Shandong, China)
出处
《钢铁钒钛》
CAS
北大核心
2016年第6期61-65,共5页
Iron Steel Vanadium Titanium
关键词
镁基贮氢材料
钛
吸放氢性能
循环稳定性
Mg2NiTi0.2
agnesium-based hydrogen storage material, titanium, hydrogen absorption and desorption performances, cycle stability, Mg2NiTi0.2
