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      Industrial decarbonization via hydrogen: A critical and systematic review of developments, socio-technical systems and policy options

      , , , ,
      Energy Research & Social Science
      Elsevier BV

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          A typology of reviews: an analysis of 14 review types and associated methodologies.

          The expansion of evidence-based practice across sectors has lead to an increasing variety of review types. However, the diversity of terminology used means that the full potential of these review types may be lost amongst a confusion of indistinct and misapplied terms. The objective of this study is to provide descriptive insight into the most common types of reviews, with illustrative examples from health and health information domains. Following scoping searches, an examination was made of the vocabulary associated with the literature of review and synthesis (literary warrant). A simple analytical framework -- Search, AppraisaL, Synthesis and Analysis (SALSA) -- was used to examine the main review types. Fourteen review types and associated methodologies were analysed against the SALSA framework, illustrating the inputs and processes of each review type. A description of the key characteristics is given, together with perceived strengths and weaknesses. A limited number of review types are currently utilized within the health information domain. Few review types possess prescribed and explicit methodologies and many fall short of being mutually exclusive. Notwithstanding such limitations, this typology provides a valuable reference point for those commissioning, conducting, supporting or interpreting reviews, both within health information and the wider health care domain.
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            The role of hydrogen and fuel cells in the global energy system

            Hydrogen has been ‘just around the corner’ for decades, but now offers serious alternatives for decarbonising global heat, power and transport. Hydrogen technologies have experienced cycles of excessive expectations followed by disillusion. Nonetheless, a growing body of evidence suggests these technologies form an attractive option for the deep decarbonisation of global energy systems, and that recent improvements in their cost and performance point towards economic viability as well. This paper is a comprehensive review of the potential role that hydrogen could play in the provision of electricity, heat, industry, transport and energy storage in a low-carbon energy system, and an assessment of the status of hydrogen in being able to fulfil that potential. The picture that emerges is one of qualified promise: hydrogen is well established in certain niches such as forklift trucks, while mainstream applications are now forthcoming. Hydrogen vehicles are available commercially in several countries, and 225 000 fuel cell home heating systems have been sold. This represents a step change from the situation of only five years ago. This review shows that challenges around cost and performance remain, and considerable improvements are still required for hydrogen to become truly competitive. But such competitiveness in the medium-term future no longer seems an unrealistic prospect, which fully justifies the growing interest and policy support for these technologies around the world.
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              Hydrogen energy, economy and storage: Review and recommendation

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                Author and article information

                Journal
                Energy Research & Social Science
                Energy Research & Social Science
                Elsevier BV
                22146296
                October 2021
                October 2021
                : 80
                : 102208
                Article
                10.1016/j.erss.2021.102208
                a2c83847-88c6-4886-ae9c-695afaf9abac
                © 2021

                https://www.elsevier.com/tdm/userlicense/1.0/

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