Mg-based materials are regarded as one of the most promising candidates for hydrogen storage. In order to clarify the relationship between the structures and properties as well as to understand the reaction and formation mechanisms, it is beneficial to obtain useful information about the size, morphology, and microstructure of the studied materials. Herein, the use of scanning electron microscopy (SEM) and transmission electron microscopy (TEM) techniques for the representation of Mg-based hydrogen storage materials is described. The basic principles of SEM and TEM are presented and the characterizations of the size, morphology observation, phase and composition determination, and formation and reaction mechanisms clarification of Mg-based hydrogen storage materials are discussed. The applications of advanced SEM and TEM play significant roles in the research and development of the next-generation hydrogen storage materials.

中文翻译：

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先进的 SEM 和 TEM 技术应用于镁基储氢研究

镁基材料被认为是最有前途的储氢材料之一。为了阐明结构和性能之间的关系以及了解反应和形成机制，有利于获得有关所研究材料的尺寸、形貌和微观结构的有用信息。本文描述了使用扫描电子显微镜（SEM）和透射电子显微镜（TEM）技术来表征镁基储氢材料。介绍了SEM和TEM的基本原理，讨论了镁基储氢材料的尺寸表征、形貌观察、物相和成分测定以及镁基储氢材料的形成和反应机理的阐明。先进SEM和TEM的应用在下一代储氢材料的研发中发挥着重要作用。