The hydrogenation properties of Mg1.8Ag0.2Ni alloy
The hydrogenation properties of Mg1.8Ag0.2Ni alloy
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DOI：
10.1016/s0925-8388(01)01891-6
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发表时间：
2002-04
影响因子：
6.2
通讯作者：
Lianbang Wang;Yuan-hua Tang;Yijing Wang;Q. D. Li;He-nan Song;Huabin Yang
中科院分区：
文献类型：
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作者：
Lianbang Wang;Yuan-hua Tang;Yijing Wang;Q. D. Li;He-nan Song;Huabin Yang
镁基储氢合金是氢能系统的理想选择。本文采用互扩散法制备了Mg1.8Ag0.2Ni合金。采用XRD、SEM、XPS、PCT和放电行为测试对合金的组织和性能进行了表征。结果表明，Mg1.8Ag0.2Ni合金仍保持六方Mg2Ni结构，合金表面覆盖一层非晶MgO层。由于该合金的焓绝对值较低，可以在低温（150℃）下吸收氢，无需任何处理和活化。Ag的加入对合金的电化学放电性能没有影响。
Mg-based hydrogen storage alloys are a promising choice for hydrogen energy systems. In the present work, Mg1.8Ag0.2Ni alloy has been synthesized by inter-diffusion. The structure and properties of the alloy have been characterized by XRD, SEM, XPS, PCT and measurements of discharge behavior. It is found that Mg1.8Ag0.2Ni alloy still retains its hexagonal Mg2Ni structure and an amorphous MgO layer covers the surface of the alloy. The alloy can absorb hydrogen at low temperature (150°C) without any treatment and activation due to its low absolute value of the enthalpy. The addition of Ag has no effect on the electrochemical discharge properties of alloy.