Boron-neutron Capture on Activated Carbon for Hydrogen Storage

Romanos, Jimmy; Beckner, Matthew; Prosniewski, Matthew; Rash, Tyler; Lee, Mark; Robertson, J. David; Firlej, Lucyna; Kuchta, B; Pfeifer, Peter

doi:10.1038/s41598-019-39417-6

Cited by 30 publications

(13 citation statements)

References 40 publications

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“…Hydrogen is recognized as one of the most promising clean energy sources. However, the lack of efficient hydrogen storage materials is a formidable problem that hinders the practical application of hydrogen [1,2,3].…”

Section: Introductionmentioning

confidence: 99%

Hydrogen Desorption Properties of LiBH4/xLiAlH4 (x = 0.5, 1, 2) Composites

Zhu

et al. 2019

Molecules

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A detailed analysis of the dehydrogenation mechanism of LiBH4/xLiAlH4 (x = 0.5, 1, 2) composites was performed by thermogravimetry (TG), differential scanning calorimetry (DSC), mass spectral analysis (MS), powder X-ray diffraction (XRD) and scanning electronic microscopy (SEM), along with kinetic investigations using a Sievert-type apparatus. The results show that the dehydrogenation pathway of LiBH4/xLiAlH4 had a four-step character. The experimental dehydrogenation amount did not reach the theoretical expectations, because the products such as AlB2 and LiAl formed a passivation layer on the surface of Al and the dehydrogenation reactions associated with Al could not be sufficiently carried out. Kinetic investigations discovered a nonlinear relationship between the activation energy (Ea) of dehydrogenation reactions associated with Al and the ratio x, indicating that the Ea was determined both by the concentration of Al produced by the decomposition of LiAlH4 and the amount of free surface of it. Therefore, the amount of effective contact surface of Al is the rate-determining factor for the overall dehydrogenation of the LiBH4/xLiAlH4 composites.

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Section: Introductionmentioning

confidence: 99%

Hydrogen Desorption Properties of LiBH4/xLiAlH4 (x = 0.5, 1, 2) Composites

Zhu

et al. 2019

Molecules

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“…The AC used was prepared from cellulose acetate, and it had an A BET of around 3800 m 2 g −1 and a pore volume of 1.8 cm 3 g −1 . Romanos et al [103] obtained a maximum excess uptake of about 5 wt.% at 77 K and 4 MPa with boron-doped ACs, the A BET of which was equal to 3100 m 2 g −1 . However, the aforementioned results confirm the limits of the BET method: indeed, the maximum possible geometric area for a carbon material is estimated at 2630 m 2 g −1 [109].…”

Section: Activated Carbonsmentioning

confidence: 97%

“…With an exceptionally large surface area, a microporous nature and the possibility of an economic and scalable production, ACs are excellent candidates in efficient hydrogen storage systems [58,[87][88][89][90][91][92][93][94][95][96][97][98][99][100][101][102][103]. One of the most important advantages of ACs is that they can be produced from a wide variety of low-cost and renewable raw materials, such as agricultural waste or lignocellulosic materials in general, which is an important advantage compared to other carbon materials [104].…”

Section: Activated Carbonsmentioning

confidence: 99%

Characterization of Carbon Materials for Hydrogen Storage and Compression

Sdanghi

Canevesi

Celzard

et al. 2020

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Carbon materials have proven to be a suitable choice for hydrogen storage and, recently, for hydrogen compression. Their developed textural properties, such as large surface area and high microporosity, are essential features for hydrogen adsorption. In this work, we first review recent advances in the physisorption characterization of nanoporous carbon materials. Among them, approaches based on the density functional theory are considered now standard methods for obtaining a reliable assessment of the pore size distribution (PSD) over the whole range from narrow micropores to mesopores. Both a high surface area and ultramicropores (pore width < 0.7 nm) are needed to achieve significant hydrogen adsorption at pressures below 1 MPa and 77 K. However, due to the wide PSD typical of activated carbons, it follows from an extensive literature review that pressures above 3 MP are needed to reach maximum excess uptakes in the range of ca. 7 wt.%. Finally, we present the adsorption–desorption compression technology, allowing hydrogen to be compressed at 70 MPa by cooling/heating cycles between 77 and 298 K, and being an alternative to mechanical compressors. The cyclic, thermally driven hydrogen compression might open a new scenario within the vast field of hydrogen applications.

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“…As per IUPAC norms, ACs are categorized as microporous (<20 Å), mesoporous (20–500 Å), and macroporous (>500 Å) [105] . The pore size depends on the nature of the raw material and processing methods [106] [106] .…”

Section: Hydrogen Storage In Carbon‐based Materialsmentioning

confidence: 99%

“…[106] . [106] Figure 8a validates essential outcomes regarding hydrogen storage of AC prepared from various sources (different porosity and surface area) resulting in fluctuating hydrogen adsorption value. [59d] The AC prepared from jute fiber (surface area 1224 m 2 g À 1 ) through KOH activation process obtained 1.2 wt % hydrogen uptake at ambient temperature and pressure.…”

Section: Activated Carbonmentioning

confidence: 99%

Carbon‐Based Sorbents for Hydrogen Storage: Challenges and Sustainability at Operating Conditions for Renewable Energy

et al. 2022

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It is estimated that all fossil fuels will be depleted by 2060 if we continue to use them at the present rate. Therefore, there is an unmet need for an alternative source of energy with high calorific value. In this regard, hydrogen is considered the best alternative renewable fuel that could be used in practical conditions. Accordingly, researchers are looking for an ideal hydrogen storage system under ambient conditions for feasible applications. In many respects, carbon‐based sorbents have emerged as the best possible hydrogen storage media. These carbon‐based sorbents are cost‐effective, eco‐friendly, and readily available. In this Review, the present status of carbon‐based materials in promoting solid‐state hydrogen storage technologies at the operating temperature and pressure was reported. Experimental studies have shown that some carbon‐based materials such as mesoporous graphene and doped carbon nanotubes may have hydrogen storage uptake of 3–7 wt %, while some theoretical studies have predicted up to 13.79 wt % of hydrogen uptake at ambient conditions. Also, it was found that different methods used for carbon materials synthesis played a vital role in hydrogen storage performance. Eventually, this Review will be helpful to the scientific community for finding the competent material and methodology to investigate the existing hydrogen uptake issues at operating conditions.

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Boron-neutron Capture on Activated Carbon for Hydrogen Storage

Cited by 30 publications

References 40 publications

Hydrogen Desorption Properties of LiBH4/xLiAlH4 (x = 0.5, 1, 2) Composites

Hydrogen Desorption Properties of LiBH4/xLiAlH4 (x = 0.5, 1, 2) Composites

Characterization of Carbon Materials for Hydrogen Storage and Compression

Carbon‐Based Sorbents for Hydrogen Storage: Challenges and Sustainability at Operating Conditions for Renewable Energy

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