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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 >Comparison of hydrogen cycling kinetics in NaAlH_4-carbon aerogel composites synthesized by melt infusion or ball milling
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Comparison of hydrogen cycling kinetics in NaAlH_4-carbon aerogel composites synthesized by melt infusion or ball milling

机译:熔融注入或球磨合成的NaAlH_4-碳气凝胶复合材料中氢循环动力学的比较

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摘要

This work compares the initial desorption and hydrogen cycling kinetics of NaAlH_4 melt infused into carbon aerogel with NaAlH_4-carbon aerogel composite synthesized by ball milling. Samples having comparable carbon content (47.4 wt%) prepared by either method yield virtually identical desorption and cycling behavior. Furthermore, the ball milled material can be made with lower carbon content and still maintain only slightly reduced kinetic improvements. Surprisingly, there is no evidence for mixed infused-like and bulk-like behavior even for carbon content as low as 9.1 wt%.
机译:这项工作比较了球磨合成的NaAlH_4-碳气凝胶复合材料注入到碳气凝胶中的NaAlH_4熔体的初始解吸和氢循环动力学。通过任一种方法制备的具有可比较的碳含量(47.4 wt%)的样品,其脱附和循环行为几乎相同。此外,球磨的材料可以用较低的碳含量制成,并且仍然仅保持稍微降低的动力学改进。出人意料的是,即使碳含量低至9.1 wt%,也没有混合样和大块样混合行为的证据。

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