Hydrogen storage in different carbon materials: Influence of the porosity development by chemical activation

Jiménez, Vicente; Ramírez-Lucas, Ana; Sánchez, Paula; Valverde, J.L.; Romero, Amaya

doi:10.1016/j.apsusc.2011.10.080

Cited by 55 publications

(39 citation statements)

References 64 publications

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“…But the small hysteresis loop is consistent with capillary condensation and accorded with a type IV system, which is due to some mesoporosity present in Fig. (b) . Nevertheless, the isotherms belong to type IV as grafting copolymerization, where a slight increase of the N 2 adsorbed amount took place because of increasing mesopore volume.…”

Section: Resultssupporting

confidence: 74%

Fabrication of speedy and super‐water‐absorbing non‐woven cloth with hierarchical three‐dimensional network structure

Chen

Wei

et al. 2018

Polymer International

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A novel speedy and super‐water‐absorbing non‐woven cloth with hierarchical three‐dimensional network (3D‐SS‐PET) was fabricated through the induction of UV copolymerization on polyethylene terephthalate (PET) fibers followed by a volume phase transition. The macroscopic three‐dimensional network implied that the PET non‐woven substrates are complicated three‐dimensional fibrous materials including oriented fibers in preferential or random directions. The microscopic three‐dimensional network is poly(acrylic acid‐co‐acrylamide) (poly(AA‐co‐AM)) crosslinked copolymer layers on the fiber surface. The rapid volume phase transition was achieved by immersing the swelled non‐woven poly(AA‐co‐AM) modified PET (PET‐g‐AA‐co‐AM) in ethanol. The above process was an essential step to prepare the copolymer chain; after that the fiber surface was extended to form abundant capillary channels and plenty of space between fibers. The water contact angle decreased remarkably from 130° to 0°, while the absorbing capacity of the saturated water and the average water‐absorbing rate experienced an increasing trend, rising from 300 to 324.6 g g−1 in 24 h and 18.6 and 222 g (g min)−1 in 40 s, respectively. It was concluded that surface hydrophilicity and capillaries of the hydrophilic modified macroscopic fibrous structure enhanced the water‐absorbing rate and the swelling process contributed to the higher water absorption capacity. This speedy and super‐water‐absorbing material exhibits great potentiality in diapers, sanitary napkins, wound dressings, surgical pads, and hygroscopic and sweat‐free underwear in extremely cold areas. © 2018 Society of Chemical Industry

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Section: Resultssupporting

confidence: 74%

Fabrication of speedy and super‐water‐absorbing non‐woven cloth with hierarchical three‐dimensional network structure

Chen

Wei

et al. 2018

Polymer International

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“…It was revealed that the hydrogen adsorption was found to be approximately more linearly dependent in micropore volume as well as the pore size than total pore volume, in particular, smaller pores of sizes around 0.6 to 0.8 nm were filled initially. Jimé nez et al [40] investigated the hydrogen storage capacity of different types of chemically activated carbon nanofibers (platelet, fishbone, and ribbon) and activated amorphous carbon. The highest hydrogen storage capacity exhibited 3.98 wt% in the activated amorphous carbon at 77 K and 10 bar.…”

Section: Hydrogen Uptake Capacitiesmentioning

confidence: 99%

Influence of the pore size in multi-walled carbon nanotubes on the hydrogen storage behaviors

Lee

Park

2012

Journal of Solid State Chemistry

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“…However, storing of hydrogen in of the set medium faces lots of challenges, in terms of its low storage capacity, thermodynamics, cycle life, kinetics, high cost, etc. [9][10][11][12]. Porous materials are active materials, generally used for gas separation and purification.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and characterization of activated carbon from jute fibers for hydrogen storage

Ramesh

Rajalakshmi

Dhathathreyan

2017

Renew. Energy Environ. Sustain.

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Abstract. Activated carbons (ACs) are being used as energy storage material especially for hydrogen storage application. In the present work, AC materials were synthesized from jute fibers, activated and treated using KOH to increase the porosity of samples. These AC samples retained the fibrous structure even after chemical activation at high temperature of 700°C. Channel like structures were formed which helps to increase the hydrogen storage capacity. The surface area of these samples varied from 380 to 1220 m 2 /g due to carbonization and activation treatment. The sample with high surface area of 1224 m 2 /g showed a high hydrogen uptake capacity of 1.2 wt.% at 30°C and 40 bar of H 2 gas pressure. This sample also showed a high pore volume of 0.74 cm 3 /g. These results indicate that the raw material jute fibers can be used as hydrogen storage medium after thermal and chemical treatment which increases the surface area and micropore volume.

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Hydrogen storage in different carbon materials: Influence of the porosity development by chemical activation

Cited by 55 publications

References 64 publications

Fabrication of speedy and super‐water‐absorbing non‐woven cloth with hierarchical three‐dimensional network structure

Fabrication of speedy and super‐water‐absorbing non‐woven cloth with hierarchical three‐dimensional network structure

Influence of the pore size in multi-walled carbon nanotubes on the hydrogen storage behaviors

Synthesis and characterization of activated carbon from jute fibers for hydrogen storage

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