高能球磨Mg-Ni纳米晶合金的吸氢反应特点

利用高能球磨制备了含纳米晶Mg2Ni的Mg-Ni贮氢合金,并对其进行了吸氢反应研究。结果表明纳米晶Mg2Ni+Mg+Ni复相贮氢合金在100℃～150℃可和流动的氢气反应,证明了纳米晶的Mg2Ni不但自身具有很高的反应活性,而且对纳米晶的Mg也有较好的催化作用。

Electrode properties and phase composition of Ti_(0.5)Ni_(0.25)Al_(0.25) hydrogen storage alloys and theoretical simulation

Ti0.5Al0.25Ni0.25 alloy prepared by vacuum induction melting was studied.The phase composition was analyzed with X-ray technique and EDS analysis,and its electrochemical properties were investigated at various temperatures.Electrochemical reaction kinetic parameters were also studied with proper electrochemical techniques.The influence of the secondary corrosion reaction on the anodic linear polarization measurement was also analyzed by theoretical simulation.The results show that,proper ball-milling with nickel powders is beneficial to electrochemical performance.The theoretical simulation proves that,the existence of the side reaction can disturb the measurement of electrochemical reaction kinetic parameters.