Showing papers in "International Journal of Hydrogen Energy in 2019"

TL;DR: In this paper, a brief review of hydrogen as an ideal sustainable energy carrier for the future economy, its storage as the stumbling block as well as the current position of solid-state hydrogen storage in metal hydrides and makes a recommendation based on the most promising novel discoveries made in the field in recent times which suggests a prospective breakthrough towards a hydrogen economy.

TL;DR: In this article, options for the large-scale storage of hydrogen are reviewed and compared based on fundamental thermodynamic and engineering aspects and the application of certain storage technologies, such as liquid hydrogen, methanol, ammonia, and dibenzyltoluene, is found to be advantageous in terms of storage density, cost of storage, and safety.

TL;DR: In this paper, the main existing safety and reliability challenges in hydrogen systems are reviewed, and the current state-of-the-art in safety analysis for hydrogen storage and delivery technologies is discussed, and recommendations are mentioned to help providing a foundation for future risk and reliability analysis to support safe, reliable operation.

TL;DR: In this article, a review of photo-catalysts, fabrication of novel heterojunction constructions and factors influencing the photocatalytic process for dynamic H2 production have been discussed.

TL;DR: In this article, the present status and the future perspectives of the use of metal hydrides for hydrogen storage are discussed, as well as a new hydrogen compression technology is proposed.

TL;DR: In this paper, a review of the latest activities on both fundamental aspects of Mg-based hydrides and their applications is presented, as well as a historic overview on the topic and outlines projected future developments.

TL;DR: In this paper, a review of the material and process considerations for catalytic ammonia decomposition is provided and it is shown that Ru-based catalysts on conductive support materials are active at < 500 °C.

TL;DR: In this paper, DyMn2O5/Ba3Mn 2O8 nanocomposites were prepared by hydrothermal route as potential hydrogen storage materials, for the first time.

TL;DR: In this article, the authors provide a critical and comprehensive review in the structure and defect chemistry, the electrical and ionic conductivity, and relationship between the performance, intrinsic and extrinsic factors of LSCF-based electrode materials in SOFCs.

TL;DR: In this paper, the authors compared the energy efficiency of liquid H2, methylcyclohexane (MCH), and ammonia (NH3), and concluded that NH3 has the highest total energy efficiency, followed by liquid H 2, and MCH.

TL;DR: In this article, the current knowledge in hydrogenation and de-hydrogenation of various Liquid Organic Hydrogen Carriers (LOHC) is reviewed based on their properties and compared to each other.

TL;DR: In this article, a mini foreseen review of the next quarter century vision of FCEVs are expressed and discussed by the helped of previous researches and with future forecast reports, and the authors concluded that, between the 2030s-2050s, hydrogen FCEV will continue their rising demand scale under the circumstances of decreasing expensive technology; enhanced energy optimization; extended range limits and increasing hydrogen refueling stations.

TL;DR: In this article, the authors specify the latest achievements made to improve the Nafion performance by means of pretreatments, incorporation of reinforcing agents, nanocomposites, blending, ionic liquids, and so on.

TL;DR: The theoretical hydrogen conversion efficiency of NH3 is about 90% as mentioned in this paper, which is the highest volumetric hydrogen density of 10.7 kg H2/100 L and has a high gravimetric density of 17.8 wt.

TL;DR: In this paper, a detailed kinetic description of HER is presented for stationary measurements, electrochemical impedance spectroscopy, open circuit potential decay and current step techniques and experimental conditions necessary for obtaining good experimental data are presented.

TL;DR: In this article, a comprehensive review of the hydrogen storage systems and investigations performed in search for development of fast refueling technology for fuel cell vehicles is presented, where the theoretical analysis, experiments and simulations on the factors related to the fast filling, such as initial pressure, initial temperature, filling rate and ambient temperature, are reviewed and analyzed.

TL;DR: In this article, the authors focus on the all possible reactions taking place at the catalyst during photo-induced H2 from water splitting reaction, which is green and promising technology, and various parameter affecting the photocatalytic water splitting reactions are also studied.

TL;DR: In this article, a review suggests that the incorporation of additives such as plasticisers and fillers has proven potential to modify the physical and chemical properties of pristine and/or composite membranes.

TL;DR: In this paper, a review discusses comprehensive information on chemical methods reported for the preparation of plasmonic photocatalyst that resulted in co-catalyst and visible light sensitizer properties.

TL;DR: In this paper, a task force was set up for the compilation of state-of-the-art technical and economical data on large-scale water electrolyser systems, both based on PEM and alkaline technology.

TL;DR: In this paper, the authors investigate the possibility of developing a health-conscious energy management strategy based on accurate estimation of degradation to improve the durability of the system and classify a variety of energy management strategies that have taken the influence of degradation into consideration.

TL;DR: In this article, the authors assess the future engineering potential for hydrogen and provide insight to areas of research to help lower economic barriers for hydrogen adoption by creating top-level system models based on energy requirements for end-use services.

TL;DR: In this paper, the methods of the hydrogen production with the help of two large groups of phototrophic microorganisms (microalgae and cyanobacteria) are discussed, and a variety of immobilization matrices and methods are examined for their suitability to make immobilized H 2 producers.

TL;DR: In this article, the authors evaluated various new solutions that are being evaluated, including the accumulation in batteries, the use of compressed air energy storage (CAES), and the production of hydrogen that appears to be the most suitable to associate with the water storage (pumped hydro).

TL;DR: In this paper, a ternary metallic cobalt-cobalt nitride-dicobalt phosphide composite embedded in nitrogen and phosphorus co-doped carbon (Co/CoN/Co2P-NPC) was developed as bifunctional catalysts for hydrogen evolution reaction (HER) and oxygen evolution reaction.

TL;DR: In this paper, an integrated system based on anaerobic digestion (AD) of sewage sludge from wastewater treatment plant (WWTP) for multi-generation is investigated, where the useful outputs of this system are power, freshwater, heat, and hydrogen while there are some heat recoveries within the system for improving efficiency.

TL;DR: In this article, the authors comprehensively cover the literature that describes the thermochemical techniques of hydrogen production from biomass and highlight the current approaches, relevant methods, technologies and resources adopted for high yield hydrogen production.

TL;DR: In this paper, the authors reported a direct polymerization strategy to fabricate the ultrathin g-C3N4 nanosheets, that is only heating treatment of thiourea in air without addition of any template.

TL;DR: In this paper, the authors report the state-of-the-art for ammonia-based and liquid organic hydrogen carriers, with a particular focus on the challenge of ensuring easily regenerable, high-density hydrogen storage.

TL;DR: The present review focuses on exploring the potential of nanotechnology in the dark fermentation of biohydrogen production, the mechanisms involved, substrates used and changes to be made to increase the production efficiency of dark fermentation.