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首页> 外文期刊>Journal of Non-Crystalline Solids: A Journal Devoted to Oxide, Halide, Chalcogenide and Metallic Glasses, Amorphous Semiconductors, Non-Crystalline Films, Glass-Ceramics and Glassy Composites >High structural stability and hydrogen storage properties of nano-porous Zr-Al-Ni-Pd glassy alloy produced by electrochemical dealloying
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High structural stability and hydrogen storage properties of nano-porous Zr-Al-Ni-Pd glassy alloy produced by electrochemical dealloying

机译：电化学勘误制剂生产纳米多孔ZR-Al-Ni-Pd玻璃合金的高结构稳定性和储氢性能

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摘要

Nano-porous glassy Zr60Al5Ni30Pd5 skeleton structure alloy was prepared by electrochemical etching treatment in its glassy phase. The nano-pore size is about 5-15 nm and no nano-phase aggregation phenomenon is recognized. The alloy composition of the nano-porous surface shifted to Zr21.8Al2.4Ni56.1Pd19.7 and the electrochemical treatment caused the enrichment of Ni and Pd elements on the nano-porous surface. The enrichment of Ni and Pd elements leads to the increases of the reaction activity with hydrogen due to Pd catalytic effect through creating diffusion pathway into the bulk of material. The nano-porous glassy alloy has homogeneous distribution of Pd element and exhibits high corrosion resistance. The hydrogen absorption/desorption characteristics cycles with enhanced kinetics are maintained without appreciable degradation up to 20 cycles and the hydrogen absorption capacity reaches about 5.4 wt%. This result indicates the possibility of developing a suitable hydrogen storage material which can reduce the consumption amount of precious Pd metals.
机译：采用电化学腐蚀法制备了纳米多孔玻璃态Zr60Al5Ni30Pd5骨架结构合金。纳米孔径约为5-15nm，未发现纳米相聚集现象。纳米多孔表面的合金成分向Zr21转移。8Al2。4Ni56。1Pd19。电化学处理使镍和钯元素在纳米多孔表面富集。镍和钯元素的富集，通过在材料中形成扩散途径，由于钯的催化作用，导致与氢的反应活性增加。纳米多孔玻璃合金中钯元素分布均匀，具有很高的耐蚀性。在20个循环中，动力学增强的吸/解吸特性循环保持不变，没有明显的降解，吸氢能力达到约5.4 wt%。这一结果表明，有可能开发一种合适的储氢材料，以减少贵金属钯的消耗量。

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