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通过PCT(Pressure-Content-Temperature)设备研究了不同催化剂Ti、Ni、Fe、Ce(SO4)2和LaCl3对LiAlH4可逆储氢性能的影响。结果表明掺杂明显降低了试样的放氢速率,此外除了LaCl3,其他的掺杂还降低了试样的放氢温度,试样的放氢量也明显地下降了。掺杂1mol%Ni,1mol%Ti,1mol%Ce(SO4)2和1mol%LaCl3的LiAlH4可逆吸氢的研究发现,在180℃和8MPa氢压的条件下,掺杂1mol%Ni的试样表现出了最好的吸氢性能,其吸氢量达到了0.97%(质量分数)。
The effects of different catalysts Ti, Ni, Fe, Ce (SO4) 2 and LaCl3 on the reversible hydrogen storage properties of LiAlH4 were investigated by PCT (Pressure-Content-Temperature) equipment. The results show that the doping significantly reduces the hydrogen release rate of the sample. In addition to LaCl3, other doping also reduces the hydrogen release temperature of the sample and the amount of hydrogen released from the sample obviously decreases. Reversible hydrogen uptake of LiAlH4 doped with 1 mol% Ni, 1 mol% Ti, 1 mol% Ce (SO4) 2 and 1 mol% LaCl3 revealed that samples doped with 1 mol% Ni exhibited a hydrogen pressure of 180 MPa and a pressure of 8 MPa The best hydrogen absorption performance, the hydrogen absorption reached 0.97% (mass fraction).