Stress development of metal hydride composites for high density hydrogen storage applications
Stress development of metal hydride composites for high density hydrogen storage applications
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用于高密度储氢应用的金属氢化物复合材料的应力开发
DOI：
10.1016/j.jallcom.2017.02.113
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发表时间：
2017
影响因子：
6.2
通讯作者：
Röntzsch L
中科院分区：
文献类型：
--
作者：
Heubner F;Mauermann S;Kieback B;Röntzsch L
如果在化学反应过程中发生体积膨胀，则吸收气体的固体会产生强大的机械力。特别是对于金属氢化物反应器，为了反应器安全，需要考虑在许多氢吸收/解吸循环中反应器壁或内部组件上的机械应力的演变。在这项工作中，我们报告了最近开发的原位测量原理，可以确定的机械应力，源于金属氢化物的形成。为此，一个独特的实验室规模的反应器，配备了测量单元，已被设计和测试与最近开发的金属氢化物复合材料（MHC）。对于空间受限的MHC，我们发现，机械应力开发的两个半倍以上的氢气压力应用于氢化物形成。
Strong mechanical forces can appear from gas absorbing solids if a volume expansion occurs during the chemical reaction. In particular for metal hydride reactors, the evolution of mechanical stresses on the reactor wall or internal assemblies over many hydrogen absorption/desorption cycles needs to be considered for reactor safety. In this work, we report on a recently developed in-situ measuring principle that allows the determination of mechanical stresses that originate from a metal hydride formation. For this purpose, a unique lab-scale reactor, equipped with a measuring cell, has been designed and tested with recently developed metal hydride composites (MHC). For spatially confined MHC we found that mechanical stresses were developed two and a half times higher than the hydrogen gas pressure applied for hydride formation.
高氢含量反应槽吸放氢循环过程中的应变变化
影响因子：
7.2
作者：
Weiyuan Duan;Junlin Du;Zhenjie Wang;Y. Niu;Tiesheng Huang;Zhilin Li;Chao Pu;Zhu Wu
通讯作者：
Zhu Wu