Enhanced hydrogen storage by spillover on metal-doped carbon foam: an experimental and computational study

Psofogiannakis, George; Steriotis, Theodore; Bourlinos, A. B.; Kouvelos, Evangellos P.; Charalambopoulou, Georgia; Stubos, A.K.; Froudakis, George E.

doi:10.1039/c0nr00767f

Cited by 66 publications

(45 citation statements)

References 16 publications

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“…A detailed pore size distribution (PSD) analysis was carried out by applying the Quenched Solid Density Functional Theory (QSDFT) kernel for slit/cylinder-like shape pores in the recorded N 2 desorption data [35]. 8 3 Results and discussion The aforementioned morphology was also investigated in more detail using high-resolution TEM analysis ( Fig. 2g and 2h).…”

Section: Characterization Methodsmentioning

confidence: 99%

“…and other compounds, such as metallic-and/or inorganic-based nano-sized particles, clusters or thin films [1][2][3][4][5]. Such composite materials may exhibit a combination of properties favorable for rapidly expanding and materials-oriented research areas, including gas sensing [6], carbon dioxide conversion [7], hydrogen storage [8], electrochemical energy storage [9], water treatment [10] and capacitive desalination [11]. Their promising performance in such applications is attributed not only to the individual characteristics of the host carbonaceous support and the hosted/embedded substance, but also to the potential synergy between the two.…”

Section: Introductionmentioning

confidence: 99%

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Novel combustion synthesis of carbon foam‑aluminum fluoride nanocomposite materials

et al. 2018

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Section: Characterization Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Novel combustion synthesis of carbon foam‑aluminum fluoride nanocomposite materials

et al. 2018

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“…Exploring safe and efficient materials remains a great challenge. [1][2][3][4][5][6] Among many practical hydrogen storage materials, NH 3 BH 3 (AB) is believed to be a prominent candidate owing to its high hydrogen content (19.6 wt %), [7] excellent solubility, and stability in water. However, the hydrogen generation rate of AB in the absence of suitable catalysts is very slow, which seriously restricts its development as a promising hydrogen storage material.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Triple‐Layered Ag@Co@Ni Core–Shell Nanoparticles for the Catalytic Dehydrogenation of Ammonia Borane

Qiu

Liu

et al. 2013

Chemistry A European J

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Triple-layered Ag@Co@Ni core-shell nanoparticles (NPs) containing a silver core, a cobalt inner shell, and a nickel outer shell were formed by an in situ chemical reduction method. The thickness of the double shells varied with different cobalt and nickel contents. Ag 0.04 @Co 0.48 @Ni 0.48 showed the most distinct core-shell structure. Compared with its bimetallic core-shell counterparts, this catalyst showed higher catalytic activity for the hydrolysis of NH 3 BH 3 (AB). The synergetic interaction between Co and Ni in Ag 0.04 @Co 0.48 @Ni 0.48 NPs may play a critical role in the enhanced catalytic activity. Furthermore, cobalt-nickel double shells surrounding the silver core in the special triple-layered core-shell structure provided increasing amounts of active sites on the surface to facilitate the catalytic reaction. These promising catalysts may lead to applications for AB in the field of fuel cells.

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“…Recent work by Psofogiannakis et al (2011) has shown that carbon foams have a very low storage density of 0.045 wt% hydrogen at 298 K and 20 bar pressure. Since the physical properties of the foam material employed by Psofogiannakis et al (2011) were not described in detail, they might differ from the foam structure we have used for GCMC simulations. However, the observation of a low gravimetric density in foam from simulations seems to be in fair agreement with the experimental results.…”

Section: Physisorption Of Hydrogen In Nanoporous Structuresmentioning

confidence: 99%

Molecular Simulation of Hydrogen Physisorption and Chemisorption in Nanoporous Carbon Structures

Kumar

Salih

Lü

et al. 2011

Adsorption Science & Technology

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ABSTRACT:The effect of pore morphology on the hydrogen-storage capacity of carbon materials at room temperature (298 K) has been studied using Grand Canonical Monte Carlo (GCMC) molecular simulation. Prototypical pore geometries such as slit pores and nanotubes were considered along with carbon foams and a random disordered carbon structure. Both physisorption and chemisorption models were considered in order to take into account the most favourable adsorption scenarios. Fluid-fluid and fluid-solid interactions were assumed to follow a Lennard-Jones-type potential.It was seen that physisorption alone cannot account for the adsorption of more than a few weight percentages, regardless of the pore morphology. Under physisorption conditions, the simulation results show that carbons with a slitshaped pore geometry are more efficient than other geometries at storing hydrogen, particularly at pore distances which allow the formation of fluid layers commensurate with the pore geometry. Slit pores appear to store a maximum of 1.77 wt% hydrogen by physisorption as opposed to carbon foams (1.48 wt%), carbons with a random structure (1.04 wt%) and carbon nanotubes (0.31 wt%). Simulation with hypothetical chemisorption models where the solid-fluid interaction is artificially enhanced showed that the storage capacity is higher in pore geometries with a larger accessible volume. Strong chemisorption gave loadings of up to 17 g/ (1.5 wt%), 91 g/ (13.8 wt%), 57.33 g/ (9.6 wt%) and 42.94 g/ (8.29 wt%) in nanotubes, foams, random structures and slit pores, respectively. Desorption is a problem in this scenario, as only ca. 1-3 wt% hydrogen can be delivered from these structures. Ultimately, the comparison of the different fluid-solid potentials revealed that if solid-fluid interactions could be enhanced beyond the classical dispersion, the more open structures could be ideal candidates for hydrogen-storage materials.

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Enhanced hydrogen storage by spillover on metal-doped carbon foam: an experimental and computational study

Cited by 66 publications

References 16 publications

Novel combustion synthesis of carbon foam‑aluminum fluoride nanocomposite materials

Novel combustion synthesis of carbon foam‑aluminum fluoride nanocomposite materials

Synthesis of Triple‐Layered Ag@Co@Ni Core–Shell Nanoparticles for the Catalytic Dehydrogenation of Ammonia Borane

Molecular Simulation of Hydrogen Physisorption and Chemisorption in Nanoporous Carbon Structures

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