This review addresses the hydride swelling and shrinking phenomenon, named hydride breathing, when absorbing and desorbing hydrogen. Two aspects are particularly examined: the evolution of the powder bed volume during cycling, and the stress applied to containers by the hydride bed. Vertical and horizontal containers are distinguished. The literature on the subject is not very exhaustive. Consequently, this article makes a rather complete review of it. It reveals quite heterogeneous behavior between different hydrides, and different types of evolutions can be observed during cycling. Concerning the evolution of the powder bed volume under low loading, a wide range of solid fraction is noted. Concerning the stress applied to containers, the behavior is particularly influenced by two factors: the slenderness ratio and the solid fraction. Results are mapped according to these factors. There seem to be a critical value for the slenderness ratio around 1, but it is difficult to give a universal critical value for the solid fraction. Modelling attempts are also exposed. Some comfort these conclusions, but no model is sufficiently predictable for a use in dimensioning hydride tank. The review finishes with empirical and practical recommendations for a safe design of hydrides containers.

这篇综述讨论了在吸收和解吸氢时发生的氢化物膨胀和收缩现象，称为氢化物呼吸。特别研究了两个方面：循环过程中粉末床体积的演变，以及氢化物床对容器施加的应力。立式和卧式容器是有区别的。关于这个主题的文献不是很详尽。因此，本文对其进行了较为完整的回顾。它揭示了不同氢化物之间的异质行为，并且在循环过程中可以观察到不同类型的演变。关于低负载下粉末床体积的演变，注意到了广泛的固体部分。关于施加到容器上的应力，其行为特别受两个因素的影响：长细比和固体分数。根据这些因素绘制结果。长细比的临界值似乎在 1 左右，但很难给出固体分数的通用临界值。建模尝试也被曝光。有些人对这些结论感到满意，但没有一个模型可以充分预测用于确定氢化物储罐的尺寸。审查结束时提出了有关氢化物容器安全设计的经验和实用建议。