| abstract |
The invention provides a low-cost power type hydrogen storage alloy whose chemical formula is LaxCeyPrzNduYvNiaCobMncAldZre , wherein 0.82≤x≤0.88 , 0.12≤y≤ 0.16, 0≤z≤0.02, 0≤u≤0.02, 0≤v≤0.04, 4.52≤a≤4.58, 0.14≤b≤0.16, 0.23≤c≤0.27, 0.38≤d≤0.42, 0≤e≤0.03, 5.3≤(a+b+c+d+e)/(x+y+z+u+v)≤5.5. A preparation method of the low-cost power type hydrogen storage alloy of the present invention is also provided. The low-cost power hydrogen storage alloy of the present invention reduces the proportions of metal cobalt, praseodymium and neodymium, and adds metal yttrium and zirconium, thereby reducing cost while ensuring capacity, improving high-power performance and cycle performance, and a preparation method thereof. Simple and feasible. |