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Hydrides based on magnesium and intermetallic compounds provide a viable solution to the challenge of energy storage from renewable sources, thanks to their ability to absorb and desorb hydrogen in a reversible way with a proper tuning of pressure and temperature conditions. Therefore, they are expected to play an important role in the clean energy transition and in the deployment of hydrogen as an efficient energy vector. This review, by experts of Task 40 'Energy Storage and Conversion based on Hydrogen' of the Hydrogen Technology Collaboration Programme of the International Energy Agency, reports on the latest activities of the working group 'Magnesium- and Intermetallic alloys-based Hydrides for Energy Storage'. The following topics are covered by the review: multiscale modelling of hydrides and hydrogen sorption mechanisms; synthesis and processing techniques; catalysts for hydrogen sorption in Mg; Mg-based nanostructures and new compounds; hydrides based on intermetallic TiFe alloys, high entropy alloys, Laves phases, and Pd-containing alloys. Finally, an outlook is presented on current worldwide investments and future research directions for hydrogen-based energy storage.

Intense literature and research efforts have focussed on the exploration of complex hydrides for energy storage applications over the past decades. A focus was dedicated to the determination of their thermodynamic and hydrogen storage properties, due to their high gravimetric and volumetric hydrogen storage capacities, but their application has been limited because of harsh working conditions for reversible hydrogen release and uptake. The present review aims at appraising the recent advances on different complex hydride systems, coming from the proficient collaborative activities in the past years from the research groups led by the experts of the Task 40 ‘Energy Storage and Conversion Based on Hydrogen’ of the Hydrogen Technology Collaboration Programme of the International Energy Agency. An overview of materials design, synthesis, tailoring and modelling approaches, hydrogen release and uptake mechanisms and thermodynamic aspects are reviewed to define new trends and suggest new possible applications for these highly tuneable materials.

남한에 거주하고 있는 북한이탈주민의 수는 3만명이 넘고 있으며, 남한에 적응하지 못하고 매해 다시 국외로 출국하는 북한이탈주민의 수가 증가하고 있는 실정이다. 과거에는 북한에서 경제적 요인으로 인해 하위계층의 탈북이 있었으나, 최근에는 정치체제불만과 자유동경 등의 이유로 중산층 이상의 북한이탈주민이 증가하는 추세변화가 생겼으며, 또한 남한에서 북한이탈주민들은 이질감과 사회적 정체성으로 정착에 어려움을 겪고 이에 따라 평등함과 편안함을 위해 캐나다 등 해외에 정착을 시도하는 북한이탈주민들이 늘고 있는 실정이다. 기존 연구에서 난민신분으로 그 나라에 정착하기 위해 여가 생활의 만족이 중요한 요인으로 나타나고 있으며 이에 본 연구에서는 북한이탈주민들이 겪고 있는 여가 제약요인과 여가 활동을 캐나다에 거주하고 있는 북한이탈주민들을 반구조화 된 인터뷰와 누적표본추출법에 의해 인터뷰하였다. 또한, 컨텐츠 분석을 통해 여가활동과 사회적응과의 관계, 그리고, 여가에 대한 제약 요인을 규명하였다.