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首页> 外文期刊>Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics >Effect of mechanical milling on electrochemical properties of Ti_(45)Zr_(38x)Ni_(17+x) (x = 0, 8) quasicrystals produced by rapid-quenching
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Effect of mechanical milling on electrochemical properties of Ti_(45)Zr_(38x)Ni_(17+x) (x = 0, 8) quasicrystals produced by rapid-quenching

机译：机械研磨对快速淬火Ti_（45）Zr_（38x）Ni_（17 + x）（x = 0，8）准晶体电化学性能的影响

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摘要

The effect of mechanical milling on the discharge performance of electrodes consisting of Ti_(45)Zr_(38-x)Ni_(17+x) (x = 0, 8) quasicrystals, which were produced by a rapid-quenching, was investigated at room temperature in three-electrode cell set-up. All of the obtained ribbons were identified to contain mostly icosahe-dral (i) quasicrystal phase (i-phase). The measured discharge capacity for Ti_(45)Zr_(30)Ni_(25) material was higher than the one for Ti_(45)Zr_(38)Ni_(17). The maximum discharge capacity equal 86 mA h g~(-1) was achieved for Ti_(45)Zr_(30)Ni_(25), which was mechanically milled for 15 h. This value was obtained at the third discharge process. The recorded discharge performance was quite stable on cycling up to 30 cycles for Ti_(45)Zr_(38)Ni_(17) material, but slight decrease after 15th cycle was observed for Ti_(45)Zr_(30)Ni_(25) phase. It should be highlighted that the quasicrystal i-phase remained stable also after 25 h of mechanical milling for both studied materials. However, a formation of (Ti, Zr)H_2 hydride phase was observed after charge/discharge cycles for both of the materials.
机译：研究了机械铣削对由快速淬火产生的Ti_（45）Zr_（38-x）Ni_（17 + x）（x = 0，8）准晶体构成的电极放电性能的影响。三电极电池设置中的室温。确定所有获得的带状物都主要包含二十面体-dral（i）准晶体相（i-phase）。 Ti_（45）Zr_（30）Ni_（25）材料的实测放电容量高于Ti_（45）Zr_（38）Ni_（17）的放电容量。 Ti_（45）Zr_（30）Ni_（25）的最大放电容量等于86 mA h g〜（-1），机械研磨15 h。该值是在第三放电过程中获得的。对于Ti_（45）Zr_（38）Ni_（17）材料，记录的放电性能在循环最多30个循环时非常稳定，但在Ti_（45）Zr_（30）Ni_（25）相观察到第15个循环后，放电性能略有下降。应该强调的是，两种研究材料的机械研磨25小时后，准晶体i相也保持稳定。但是，在两种材料的充电/放电循环后都观察到了（Ti，Zr）H_2氢化物相的形成。

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