Showing papers in "International Journal of Hydrogen Energy in 2017"

TL;DR: In this paper, the authors present expert views on future capital cost, lifetime and efficiency for three electrolysis technologies: alkaline (AEC), proton exchange membrane (PEMEC) and solid oxide electrolysis cell (SOEC).

TL;DR: In this paper, three categories of non-noble metal electrocatalysts are under heavy investigations: (i) alloys, (ii) transition metal compounds, and (iii) carbonaceous nanomaterials.

TL;DR: An overview of hydrogen storage technologies and specific issues and constraints related to the materials behaviour in hydrogen and conditions representative of hydrogen energy uses can be found in this article, where the authors discuss the requirements of long-term performance of the storage device and its components under operational loads.

TL;DR: In this paper, the authors present the current energy landscape, highlighting the hydrogen and the main characteristics of the technological routes for its production, as well as the prominent research on hydrogen technology, processes and their main characteristics.

TL;DR: Future research endeavors in biofuels production should be placed on the search of novel biofuel production species, optimization and improvement of culture conditions, genetic engineering of biofuel-producing species, and effective techniques for mass cultivation of microorganisms.

TL;DR: In this article, the authors provided information encompassing the recent discovery of the High Temperature Proton Exchange Membrane Fuel Cell (HT-PEMFC) focusing on systems requirement.

TL;DR: In this article, a review of the different types of liquid fuels directly used in fuel cells and identify their properties, challenges and applications is presented, as well as their potential applications.

TL;DR: In this article, a review of the current research trends and perspectives on materials-based hydrogen storage including both material-based physical and chemical storage is presented, and the concept of storing hydrogen in para form for longterm hydrogen storage is discussed, and a converter packed with catalysts to process the normal hydrogen to para-hydrogen is highlighted.

TL;DR: In this paper, the authors explored the latest advances in electric cars technology and their design specifications and compared the characteristics and the technologies of the three types of electric cars now available in the market.

TL;DR: In this paper, the authors present the latest developments in the fabrication of different higher dimensional TiO2 nanostructured materials that aim to address these inherent limitations to an otherwise very promising material.

TL;DR: In this paper, the feasibility and impacts of all stages from production to final use of hydrogen as a resource for mobility purposes are discussed, and the main challenges and research fields that need greater engagement by researchers and political decision-makers.

TL;DR: In this article, a review of novel materials for solid oxide fuel cell (SOFC) applications covered in literature can be found, where it was found that current SOFC operating conditions lead to issues, such as carbon surface deposition, sulfur poisoning and quick component degradation at high temperatures.

TL;DR: In this paper, the main technological approaches to low to near-zero CO2 production of hydrogen from fossil fuels can be classified into three main groups: coupling hydrogen plants with CO2 capture and storage systems, dissociation of hydrocarbons to hydrogen and carbon, and integrating hydrogen production processes with non-carbon energy sources such as nuclear and solar energy.

TL;DR: In this article, a review of the literature on electrochemical hydrogen storage is presented, and it is clarified that different materials have somehow similar mechanisms for hydrogen storage, which is initiated by hydrogen dissociation, surface adsorption and probably diffusing deep within the bulk material.

TL;DR: A comprehensive review of the past and recent research activities on the topic is documented in this paper, focusing on the in-cylinder combustion of hydrogen either as a primary fuel or in dual fuel operation.

TL;DR: In this paper, the influence of Coulomb forces on Fe3O4-H2O nanofluid thermal improvement in a cavity with moving wall is examined and the final formulas are solved via Control Volume based Finite Element Method.

TL;DR: Ammonia borane has exceptional properties for chemical hydrogen storage and the recent years have witnessed many efforts in making it implementable for both thermolytic and hydrolytic dehydrogenations as mentioned in this paper.

TL;DR: An overview of the hydrogen embrittlement research carried out on high-Mn steels is presented in this article, where the authors discuss the contribution of each of these factors to the hydrogen susceptibility of these steels and discuss pathways how certain embrittlements mechanisms can be hampered or even inhibited.

TL;DR: In this article, the shape effect of nanoparticles and Brownian motion impact on nanofluid properties are taken into consideration and the solutions of final equations are obtained by CVFEM.

TL;DR: In this article, the authors compared four hydrogen production technologies using natural gas as a feedstock: steam methane reforming, auto-thermal reformulation, syngas chemical looping (SCL) and Chemical looping reforming (CLR), and showed that the CLR option can achieve the highest thermal efficiency (84%, LHV), even when CO2 capture and liquefaction units are added.

TL;DR: In this article, an analysis of the operating experiences during the initial phase of the 6MW PEM electrolysis project "Energiepark Mainz" is presented, where three options, electricity purchase at the European power exchange, excess electricity from a direct marketing company, and participating in the control reserve market have been analyzed.

TL;DR: In this paper, the progress and technical challenges in developing metallic interconnects; different types of protective coatings and deposition techniques for metallic Interconnects for intermediate-temperature solid oxide fuel cells (SOFCs) applications are reviewed.

TL;DR: In this paper, an anticorrosion coating for stainless steel (SS) and titanium bipolar plates was evaluated to improve the corrosion resistance and electrical conductivity in PEMFC.

TL;DR: In this paper, the authors introduced the working principles and sensing mechanism of the hydrogen sensors based on noble metal doped metal-oxide semiconductors, and focused on the advancement of noble metal-doped metal oxide hydrogen sensors, especially the room temperature hydrogen sensors.

TL;DR: This review compared these growth modes of microalgae and discussed the advantages of mixotrophic mode in bioenergy production by considering the difference in growth, photosynthesis characteristic and bio energy production.

TL;DR: In this paper, the impact of thermal radiation on convection heat transfer was investigated in Fe3O4-H2O nanofluid hydrothermal behavior and an innovative numerical method was chosen namely Control volume based finite element method.

TL;DR: In this paper, the authors employed adaptive neuro-fuzzy inference system (ANFIS) for evaluation of H2-selective mixed matrix membranes (MMMs) performance in various operational conditions Initially, MMMs were prepared by incorporating zeolite 4A nanoparticles into polydimethylsiloxane (PDMS) and applied in gas permeation measurement.

TL;DR: In this article, the authors successfully prepare NiAl 2 O 4 /NiO nanocomposite with thermal decomposition method by using green tea extract (GTE) as precipitating agent.

TL;DR: In this article, critical perspectives of innovation are introduced for specifically for hydrogen production under a new concept (so-called: 18S concept), covering source, system, service, scope, staff, scale-up, safety, scheme, sector, solution, stakeholder, standardization, subsidy, stimulation, structure, strategy, support and sustainability.

TL;DR: The Plan-DelyKaD project focused on an in-depth comparison of relevant electrolysis technologies, identified criteria for and selected most relevant salt cavern sites in Germany, studied business case potentials for applying hydrogen taken from storage to different end-users and engaged in identifying the future role of hydrogen from large scale storage in the German energy system.