The electric field as a novel switch for uptake/release of hydrogen for storage in nitrogen doped graphene

Ao, Zhimin; Hernández-Nieves, A. D.; Peeters, F. M.; Li, S.

doi:10.1039/c1cp23153g

Cited by 76 publications

(48 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Many kinds of carbon materials, such as activated carbons, carbon nanofibres and carbon nanotubes have been concluded as potential hydrogen storage materials during these decades2324252627. Graphene with its unique structural, electronic, thermal, and mechanical properties has been identified as a promosing candidate for hydrogen storage, especially doped graphene528. In addition to their high adsorption capacity and high adsorption/desorption rates, the carbon materials have to be predominantly microporous and have to provide an adequate surface chemistry and good mass transfer properties.…”

mentioning

confidence: 99%

Carbon hybridized halloysite nanotubes for high-performance hydrogen storage capacities

Jin

Yang

et al. 2015

Sci Rep

View full text Add to dashboard Cite

Hybrid nanotubes of carbon and halloysite nanotubes (HNTs) with different carbon:HNTs ratio were hydrothermally synthesized from natural halloysite and sucrose. The samples display uniformly cylindrical hollow tubular structure with different morphologies. These hybrid nanotubes were concluded to be promising medium for physisorption-based hydrogen storage. The hydrogen adsorption capacity of pristine HNTs was 0.35% at 2.65 MPa and 298 K, while that of carbon coated HNTs with the pre-set carbon:HNTs ratio of 3:1 (3C-HNTs) was 0.48% under the same condition. This carbon coated method could offer a new pattern for increasing the hydrogen adsorption capacity. It was also possible to enhance the hydrogen adsorption capacity through the spillover mechanism by incorporating palladium (Pd) in the samples of HNTs (Pd-HNTs) and 3C-HNTs (Pd-3C-HNTs and 3C-Pd-HNTs are the samples with different location of Pd nanoparticles). The hydrogen adsorption capacity of the Pd-HNTs was 0.50% at 2.65 MPa and 298 K, while those of Pd-3C-HNTs and 3C-Pd-HNTs were 0.58% and 0.63%, respectively. In particular, for this spillover mechanism of Pd-carbon-HNTs ternary system, the bidirectional transmission of atomic and molecular hydrogen (3C-Pd-HNTs) was concluded to be more effective than the unidirectional transmission (Pd-3C-HNTs) in this work for the first time.

show abstract

mentioning

confidence: 99%

Carbon hybridized halloysite nanotubes for high-performance hydrogen storage capacities

Jin

Yang

et al. 2015

Sci Rep

View full text Add to dashboard Cite

show abstract

“…(=0.5 V/Å) was studied and no instability in the graphene layer was reported. 64 Similarly, dissociative adsorption of hydrogen on nitrogen-doped graphene was studied under the electric field values ranging between 0 and 0.5 V/Å. 65 Neither of these theoretical studies report breaking of the carbon− carbon bonds in graphene under electric field values in the range of 1 V/Å.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

Modulation of Electronic Properties in Laterally and Commensurately Repeating Graphene and Boron Nitride Composite Nanostructures

2015

View full text Add to dashboard Cite

Graphene and hexagonal boron nitride (h-BN) nanoribbons of diverse widths and edge geometries are laterally repeated to form commensurate, single-layer, hybrid honeycomb structures. The resulting composite materials appear as continuous, one atom thick stripes of graphene and BN having the average mechanical properties of constituent structures. However, depending on the widths of constituent stripes they can be metal or semiconductor with band gaps in the energy range of the visible light. These two-dimensional (2D) composite materials allow strong dimensionality in electrical conductivity and undergo transition from 2D to one-dimensional (1D) metal in a 2D medium, resulting in multichannel narrow conductors. As for the composite ribbons, such as one dielectric BN stripe placed between two graphene stripes with bare zigzag edges, charge separation of opposite polarity is possible under applied electric field and they exhibit resonant tunneling effects at nanoscale. Graphene/BN composite materials also form stable single-wall nanotubes with zigzag or armchair geometries.

show abstract

“…Another possibility is to use doped graphene, especially with boron [36][37][38], aluminum [39], silicon [40], or nitrogen [41], for significant enhancement of H 2 binding capacity. The presence of boron modifies the symmetry of the energy landscape because of both the larger boron size (with respect to carbon) and its stronger interaction with hydrogen molecules [36].…”

Section: Doped Graphenementioning

confidence: 99%

Graphene‐Based Devices for Hydrogen Storage

Wang

2015

Graphene‐based Energy Devices

View full text Add to dashboard Cite

In the twenty-first century, renewable, environment-friendly, and sustainable alternative energy sources are urgently demanded because of the aggravating energy problems related to fossil fuel consumption and global warming [1, 2]. Among these candidate energy sources, hydrogen has been considered as one of the ultimate clean fuels because of its environmental compatibility, easy production, and nonpolluting properties [3]. However, the storage of hydrogen has been identified as the most difficult challenge. For practical applications, hydrogen storage demands high gravimetric and volumetric densities, fast reaction kinetics, a low H 2 absorption temperature, good reversibility, and low cost. Therefore, much research effort has been focused on how to develop hydrogen storage systems that can satisfy the conditions mentioned above. Current hydrogen storage technologies, such as cryogenic liquid storage, high-pressure gas cells, low-temperature adsorbates, metal hydrides, and chemical storage, have not been able to meet all the industry requirements [4]. To achieve economic feasibility, hydrogen storage materials with high gravimetric and volumetric densities -specified by the Department of Energy targets of 6.0 wt% mass ratio and 45 kg m −3 volumetric capacity by 2010 -need to be developed urgently [5].Undoubtedly, the developments of hydrogen storage techniques strongly depend on achievements of materials science [2]. In order to accomplish such a target, the key aspects are designing novel materials and developing synthesis processes that allow precise control over the structural and chemical characteristics of the material, as well as seeking greener and cost effective material synthesis processes for the widespread utilization of such devices [6,7]. In the past decade, there has been a strong focus on the use of carbon nanotubes (CNTs) for the fabrication of hydrogen energy storage devices. Besides being lightweight, CNTs present many advantages, including a large surface area (up to 1315 m 2 g −1 ) and mass producability. However, many disadvantages have limited its widespread applications, such as the presence of toxic residual metallic impurities that are very difficult to remove and the high manufacturing cost [8].Graphene-based Energy Devices, First Edition. Edited by A. Rashid bin Mohd Yusoff.

show abstract

The electric field as a novel switch for uptake/release of hydrogen for storage in nitrogen doped graphene

Cited by 76 publications

References 26 publications

Carbon hybridized halloysite nanotubes for high-performance hydrogen storage capacities

Carbon hybridized halloysite nanotubes for high-performance hydrogen storage capacities

Modulation of Electronic Properties in Laterally and Commensurately Repeating Graphene and Boron Nitride Composite Nanostructures

Graphene‐Based Devices for Hydrogen Storage

Contact Info

Product

Resources

About