Nanostructured Materials for Hydrogen Storage

2010 ◽  
Vol 132 ◽  
pp. 1-18 ◽  
Author(s):  
Saghar Sepehri ◽  
Yan Yi Liu ◽  
Guo Zhong Cao

Hydrogen generated from clean and renewable energy sources has been considered as an alternate fuel to carbon based fossil fuels for several decades. Although many advances in hydrogen production and usage have been made, storing hydrogen remains a significant challenge. Many drawbacks including energy intensive processes, low volumetric densities, and safety concerns are associated with storing hydrogen as pressured or liquefied. Solid state hydrogen storage is considered to be the most promising method as a safe and effective storage option, but there is still no material or method that satisfies the requirements for a practical approach. A feasible hydrogen storage media should address several issues including targeted storage capacities, thermodynamics and hydrogen sorption kinetics, and safety. Nanostructured materials can provide tailor-made properties for storing and releasing hydrogen to fulfill, at least, the partial requirements. This short review, not a comprehensive review of all the materials or technologies in hydrogen storage, summarizes some of the recent developments in application of nanostructures for solid state hydrogen storage; particular attention has been devoted to the most recent development of nanocomposites with tuned dehydrogenation temperatures and kinetics through the control of pore size and surface chemistry.

Hydrogen ◽  
2021 ◽  
Vol 2 (4) ◽  
pp. 428-443
Author(s):  
Claudio Pistidda

Humanity is confronted with one of the most significant challenges in its history. The excessive use of fossil fuel energy sources is causing extreme climate change, which threatens our way of life and poses huge social and technological problems. It is imperative to look for alternate energy sources that can replace environmentally destructive fossil fuels. In this scenario, hydrogen is seen as a potential energy vector capable of enabling the better and synergic exploitation of renewable energy sources. A brief review of the use of hydrogen as a tool for decarbonizing our society is given in this work. Special emphasis is placed on the possibility of storing hydrogen in solid-state form (in hydride species), on the potential fields of application of solid-state hydrogen storage, and on the technological challenges solid-state hydrogen storage faces. A potential approach to reduce the carbon footprint of hydrogen storage materials is presented in the concluding section of this paper.


2021 ◽  
Vol 11 (15) ◽  
pp. 7069
Author(s):  
Nhut Minh Nguyen ◽  
Falah Alobaid ◽  
Paul Dieringer ◽  
Bernd Epple

Biomass has emerged as one of the most promising renewable energy sources that can replace fossil fuels. Many researchers have carried out intensive research work on biomass gasification to evaluate its performance and feasibility to produce high-quality syngas. However, the process remains the problem of tar formation and low efficiency. Recently, novel approaches were developed for biomass utilization. Chemical looping gasification is considered a suitable pathway to produce valuable products from biomass among biomass conversion processes. This review paper provides a significant body of knowledge on the recent developments of the biomass-based chemical looping gasification process. The effects of process parameters have been discussed to provide important insights into the development of novel technology based on chemical looping. The state-of-the-art experimental and simulation/modeling studies and their fundamental assumptions are described in detail. In conclusion, the review paper highlights current research trends, identifying research gaps and opportunities for future applications of biomass-based chemical looping gasification process. The study aims to assist in understanding biomass-based chemical looping gasification and its development through recent research.


Author(s):  
D. Yogi Goswami ◽  
Samantha T. Mirabal ◽  
Nitin Goel ◽  
H. A. Ingley

This paper describes an overview of the present status of the conventional hydrogen production technologies and some of the recent developments in the production of hydrogen using solar energy resources. It was found that conversion of fossil fuels and biomass, electrolysis of water using solar and wind energy, and direct solar conversion by thermochemical means are some of the most significant methods of H2 production. The technological status and economic analysis for commercial and near commercial technologies using renewable energy sources such as electrolysis using PV and solar thermal power, photochemical and photoelectrochemical hydrogen production, direct thermal decomposition of water, thermochemical cycles, and biological hydrogen production are outlined. Although fossil fuels are currently the least expensive and most widely used sources of hydrogen production, it is argued from an economic analysis that renewable sources of hydrogen are the most promising options for the future. Further, solar hydrogen becomes a storable fuel that is produced from this non-storable and intermittent source of energy.


Hydrogen ◽  
2020 ◽  
Vol 1 (1) ◽  
pp. 38-63
Author(s):  
Andrii Lys ◽  
Julien O. Fadonougbo ◽  
Mohammad Faisal ◽  
Jin-Yoo Suh ◽  
Young-Su Lee ◽  
...  

Solid-state hydrogen storage covers a broad range of materials praised for their gravimetric, volumetric and kinetic properties, as well as for the safety they confer compared to gaseous or liquid hydrogen storage methods. Among them, AxBy intermetallics show outstanding performances, notably for stationary storage applications. Elemental substitution, whether on the A or B site of these alloys, allows the effective tailoring of key properties such as gravimetric density, equilibrium pressure, hysteresis and cyclic stability for instance. In this review, we present a brief overview of partial substitution in several AxBy alloys, from the long-established AB5 and AB2-types, to the recently attractive and extensively studied AB and AB3 alloys, including the largely documented solid-solution alloy systems. We not only present classical and pioneering investigations, but also report recent developments for each AxBy category. Special care is brought to the influence of composition engineering on desorption equilibrium pressure and hydrogen storage capacity. A simple overview of the AxBy operating conditions is provided, hence giving a sense of the range of possible applications, whether for low- or high-pressure systems.


Nanomaterials ◽  
2020 ◽  
Vol 10 (9) ◽  
pp. 1790 ◽  
Author(s):  
Baglan Bakbolat ◽  
Chingis Daulbayev ◽  
Fail Sultanov ◽  
Renat Beissenov ◽  
Arman Umirzakov ◽  
...  

The growth of industrialization, which is forced to use non-renewable energy sources, leads to an increase in environmental pollution. Therefore, it is necessary not only to reduce the use of fossil fuels to meet energy needs but also to replace it with cleaner fuels. Production of hydrogen by splitting water is considered one of the most promising ways to use solar energy. TiO2 is an amphoteric oxide that occurs naturally in several modifications. This review summarizes recent advances of doped TiO2-based photocatalysts used in hydrogen production and the degradation of organic pollutants in water. An intense scientific and practical interest in these processes is aroused by the fact that they aim to solve global problems of energy conservation and ecology.


RSC Advances ◽  
2019 ◽  
Vol 9 (18) ◽  
pp. 9907-9930 ◽  
Author(s):  
Mohamed Sherif El-Eskandarany

Photos taken in November 2018 at NAM-EBRC, KISR, presenting the successful application of the use of a solid-state hydrogen storage nanocomposite for charging 8 batteries of an electric golf cart, using a 1000 W PEM-fuel cell.


2016 ◽  
Vol 41 (32) ◽  
pp. 14404-14428 ◽  
Author(s):  
Elsa Callini ◽  
Kondo-Francois Aguey-Zinsou ◽  
Rajeev Ahuja ◽  
Josè Ramon Ares ◽  
Sara Bals ◽  
...  

Robotica ◽  
2019 ◽  
Vol 38 (9) ◽  
pp. 1576-1604
Author(s):  
Ahmed A. Hassan ◽  
Mohamed El Habrouk ◽  
Samir Deghedie

SUMMARYFossil fuel sources are well suited to fulfill the energy needs of human beings. Unfortunately, there are some limitations and disadvantages pertaining to fossil fuels, some of which are drastic. The main issues are: firstly, there is a finite supply of these fuels, eventually this supply will be exhausted; secondly, burning fossil fuels contributes to global warming, leading to disastrous consequences for the environment and the health of humans. Switching to renewable energy sources is the viable solution to the aforementioned issues. Robots bring numerous benefits in a wide variety of applications. Introducing robots to production environments and other applications results in a remarkable improvement in terms of productivity and efficiency. In this paper, the integration between robots and renewable energy sources is discussed. In other words, two main points are investigated: (1) how can renewable energy be a viable source of energy for robots and (2) how can the renewable energy industry benefit from utilizing robots in the execution of renewable energy-related tasks. Some of the recent developments concerning the integration between robots and renewable energy are reviewed. In addition, more opportunities and expected advancements are also discussed.


2016 ◽  
Vol 18 (1) ◽  
pp. 141-148 ◽  
Author(s):  
M. Calizzi ◽  
F. Venturi ◽  
M. Ponthieu ◽  
F. Cuevas ◽  
V. Morandi ◽  
...  

The structure of Mg–Ti nanoparticles and their hydrogen sorption properties are studied for different Ti contents. The metastable Mg–Ti solid solution formed in the as-prepared state decomposes upon H-absorption, leading to a MgH2/TiH2 nanocomposite with very fast H-sorption kinetics.


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