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发明公开
CN106637932A 一种制备储氢物质镁镍合金纳米纤维的方法 无效 - 撤回

一种制备储氢物质镁镍合金纳米纤维的方法
摘要：
本发明属于氢气存储材料制备技术领域，具体为制备储氢物质镁镍合金纳米纤维的方法。本发明通过改变静电纺丝法制备Ni(NO3)2/PVP纤维的煅烧条件，合成竹节状的Ni纳米纤维作为Ni源，利用高温热蒸发法将Mg蒸发到Ni纳米纤维表面进行原位反应，制备得到Mg‑Ni纳米纤维。本发明合成的Mg‑Ni纳米纤维总储氢量为2.25 wt.%，在100℃，100 min内即可吸附1.31 wt.%的氢气，吸完氢后，在265℃，1 min内能够快速放出1.5 wt.%的氢气，总放氢量为2.13 wt.%，具有较高的吸放氢动力学性能。
摘要（英）：

The invention belongs to the technical field of preparation of hydrogen storage materials, and in particular relates to a method for preparing a hydrogen storage material, i.e., magnesium-nickel (Mg-Ni) alloy nanofiber. The method comprises the steps of synthesizing bamboo-like Ni nanofiber as an Ni source by changing the calcination conditions of an electrospinning method for preparing Ni(NO3)2/ polyvinyl pyrrolidone (PVP) fiber, evaporating Mg onto the surface of the Ni nanofiber by using a high-temperature thermal evaporation method and carrying out in-situ reaction to obtain the Mg-Ni alloy nanofiber. The total hydrogen storage capacity of the Mg-Ni alloy nanofiber synthesized by the method is 2.25wt%, and the Mg-Ni alloy nanofiber can absorb 1.31wt% of hydrogen at the temperature of 100 DE G C within 100min; after hydrogen absorption is finished, the Mg-Ni alloy nanofiber can rapidly release 1.5wt% of the hydrogen at the temperature of 265 DE G C within 1min, and the total hydrogen desorption capacity is 2.13wt%; therefore, the Mg-Ni alloy nanofiber has higher hydrogen absorption and desorption dynamics performance.

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