Hydrogen storage technology is the major pillar for the fast growing hydrogen based energy infrastructure apart from production and delivery. Numerous attempts have been made by researchers for rational design of safe hydrogen storage technology. Solid-state hydrogen storage in the form of metal hydrides is largely adopted for their high hydrogen storage capacity and excellent reaction kinetics. Although the interaction of hydrogen with metals is a very mature area, the field has taken momentum in recent years. Novel material design, hi-tech routes for synthesis of new generations of materials have been adopted for enhancing the gravimetric capacity and kinetics of reaction. Hence, in the present review, the most studied metal hydride systems are discussed and the different approaches adopted to improve their performances are reviewed. The architectural designs in synthesis methods such as addition of dopants, use of modern synthesis tools etc. are explored for each alloy system. Recent developments in the metal hydrides of each type of alloys are highlighted in every section along with their performances. Finally, in the benefit of the researcher several new research directions on design of novel materials and improvement of the storage capacity of different alloys have been proposed.

中文翻译：

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金属氢化物的结构设计以改善储氢特性


除了生产和运输之外，氢存储技术是快速增长的氢能源基础设施的主要支柱。为了合理设计安全储氢技术，研究人员进行了大量尝试。金属氢化物形式的固态储氢因其高储氢容量和优异的反应动力学而被广泛采用。尽管氢与金属的相互作用是一个非常成熟的领域，但该领域近年来发展势头强劲。采用新颖的材料设计、合成新一代材料的高科技路线来增强重量能力和反应动力学。因此，在本综述中，讨论了研究最多的金属氢化物系统，并回顾了提高其性能所采用的不同方法。针对每种合金系统，探索了合成方法中的结构设计，例如添加掺杂剂、使用现代合成工具等。每个部分都重点介绍了每种合金的金属氢化物的最新发展及其性能。最后，在研究人员的帮助下，提出了关于新型材料的设计和不同合金的存储容量的提高的几个新的研究方向。