scholarly journals Enhanced hydrogen storage kinetics and air stability of nanoconfined NaAlH4 in graphene oxide framework

RSC Advances ◽  
2021 ◽  
Vol 11 (52) ◽  
pp. 32533-32540
Author(s):  
Hyung Wan Do ◽  
HyeonJi Kim ◽  
Eun Seon Cho
Keyword(s):  
Graphene Oxide ◽  
Hydrogen Storage ◽  
Oxidative Stability ◽  
Ambient Conditions ◽  
Hydrogen Storage Kinetics

NaAlH4 nanoconfined in a graphene oxide framework (NaAlH4@GOF) showed significantly enhanced hydrogen storage kinetics as well as improved oxidative stability under ambient conditions.

Catalyzed KSiH3as a reversible hydrogen storage material

2016 ◽  
Vol 4 (48) ◽  
pp. 19045-19052 ◽  
Author(s):  
R. Janot ◽  
W. S. Tang ◽  
D. Clémençon ◽  
J.-N. Chotard
Keyword(s):  
Solid State ◽  
Hydrogen Storage ◽  
Storage Capacity ◽  
Hydrogen Storage Material ◽  
Ambient Conditions ◽  
Storage Material ◽  
Hydrogen Storage Capacity ◽  
Hydrogen Storage Kinetics ◽  
Reversible Formation ◽  
Kinetics Of

Solid-state hydrogen storage through the reversible formation of metallic hydrides is a key issue for the development of hydrogen as an energy vector. Here the hydrogen storage kinetics of the reaction between KSi and KSiH3have been strongly enhanced by catalyst addition. The reaction is perfectly reversible near ambient conditions with a 4.1 wt% hydrogen storage capacity.

Ultrathin K2Ti8O17 nanobelts for improving the hydrogen storage kinetics of MgH2

2021 ◽  
pp. 160571
Author(s):  
Hu Song ◽  
Huanhuan Zhang ◽  
Zhenluo Yuan ◽  
Yuhang Wang ◽  
Guangxin Fan ◽  
...  
Keyword(s):  
Hydrogen Storage ◽  
Hydrogen Storage Kinetics ◽  
Kinetics Of

scholarly journals Generating Electricity from Natural Evaporation Using PVDF Thin Films Incorporating Nanocomposite Materials

Energies ◽  
2021 ◽  
Vol 14 (3) ◽  
pp. 585
Author(s):  
Ariel Ma ◽  
Jian Yu ◽  
William Uspal
Keyword(s):  
Thin Films ◽  
Graphene Oxide ◽  
Polyvinylidene Fluoride ◽  
Capillary Flow ◽  
Short Circuit ◽  
Current Source ◽  
Nanocomposite Materials ◽  
The Other ◽  
Pvdf Film ◽  
Ambient Conditions

Natural evaporation has recently come under consideration as a viable source of renewable energy. Demonstrations of the validity of the concept have been reported for devices incorporating carbon-based nanocomposite materials. In this study, we investigated the possibility of using polymer thin films to generate electricity from natural evaporation. We considered a polymeric system based on polyvinylidene fluoride (PVDF). Porous PVDF films were created by incorporating a variety of nanocomposite materials into the polymer structure through a simple mixing procedure. Three nanocomposite materials were considered: carbon nanotubes, graphene oxide, and silica. The evaporation-induced electricity generation was confirmed experimentally under various ambient conditions. Among the nanocomposite materials considered, mesoporous silica (SBA-15) was found to outperform the other two materials in terms of open-circuit voltage, and graphene oxide generated the highest short-circuit current. It was found that the nanocomposite material content in the PVDF film plays an important role: on the one hand, if particles are too few in number, the number of channels will be insufficient to support a strong capillary flow; on the other hand, an excessive number of particles will suppress the flow due to excessive water absorption underneath the surface. We show that the device can be modeled as a simple circuit powered by a current source with excellent agreement between the theoretical predictions and experimental data.

scholarly journals Facile synthesis of Tb-decorated graphene oxide: electrochemical stability, hydrogen storage, and corrosion inhibition of Mg AZ13 alloy in 3.5% NaCl medium

RSC Advances ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 662-670
Author(s):  
Palaniappan Nagarajan ◽  
Ivan S. Cole ◽  
Aleksey Kuznetsov ◽  
Sivakumar Manickam
Keyword(s):  
Graphene Oxide ◽  
Hydrogen Storage ◽  
Corrosion Inhibition ◽  
Electrochemical Stability ◽  
Functionalized Graphene ◽  
Facile Synthesis ◽  
Functionalized Graphene Oxide

Terbium functionalized graphene oxide interacted with an Mg2+ surface by the active side of GO.

Recent Advances in Hydrogen Storage Materials

2012 ◽  
Vol 512-515 ◽  
pp. 1438-1441 ◽  
Author(s):  
Hong Min Kan ◽  
Ning Zhang ◽  
Xiao Yang Wang ◽  
Hong Sun
Keyword(s):  
Liquid Phase ◽  
Hydrogen Storage ◽  
Earth Metal ◽  
Solid Material ◽  
Hydrogen Energy ◽  
Hydrogen Storage Material ◽  
Ambient Conditions ◽  
Storage Material ◽  
Lithium Borohydride ◽  
Recent Advances

An overview of recent advances in hydrogen storage is presented in this review. The main focus is on metal hydrides, liquid-phase hydrogen storage material, alkaline earth metal NC/polymer composites and lithium borohydride ammoniate. Boron-nitrogen-based liquid-phase hydrogen storage material is a liquid under ambient conditions, air- and moisture-stable, recyclable and releases H2controllably and cleanly. It is not a solid material. It is easy storage and transport. The development of a liquid-phase hydrogen storage material has the potential to take advantage of the existing liquid-based distribution infrastructure. An air-stable composite material that consists of metallic Mg nanocrystals (NCs) in a gas-barrier polymer matrix that enables both the storage of a high density of hydrogen and rapid kinetics (loading in <30 min at 200°C). Moreover, nanostructuring of Mg provides rapid storage kinetics without using expensive heavy-metal catalysts. The Co-catalyzed lithium borohydride ammoniate, Li(NH3)4/3BH4 releases 17.8 wt% of hydrogen in the temperature range of 135 to 250 °C in a closed vessel. This is the maximum amount of dehydrogenation in all reports. These will reduce economy cost of the global transition from fossil fuels to hydrogen energy.

Plasma-induced highly efficient synthesis of boron doped reduced graphene oxide for supercapacitors

2016 ◽  
Vol 52 (73) ◽  
pp. 10988-10991 ◽  
Author(s):  
Shaobo Li ◽  
Zhaofeng Wang ◽  
Hanmei Jiang ◽  
Limei Zhang ◽  
Jingzheng Ren ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Barrier Discharge ◽  
Efficient Synthesis ◽  
Ambient Conditions ◽  
Plasma Technology ◽  
Dbd Plasma ◽  
Dielectric Barrier ◽  
Boron Doped ◽  
Reduced Graphene

In this work, we presented a novel route to synthesize boron doped reduced graphene oxide (rGO) by using the dielectric barrier discharge (DBD) plasma technology under ambient conditions.

Mysterious Mechanism of Graphene Oxide Laser Reduction at Ambient Conditions: Experimental and ReaxFF Study

2021 ◽  
Author(s):  
Nikita D. Orekhov ◽  
Julia Bondareva ◽  
Denis O. Potapov ◽  
Pavel V. Dyakonov ◽  
Oleg N. Dubinin ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Ambient Conditions ◽  
Laser Reduction

scholarly journals Effect of pretreatment on the proximate composition, physicochemical characteristics and stability of Moringa peregrina oil

2018 ◽  
Vol 68 (4) ◽  
pp. 227
Author(s):  
H. A. Sulaiman ◽  
E. E.M. Ahmad ◽  
AA. Mariod ◽  
B. Mathäus ◽  
M. Salaheldeen
Keyword(s):  
Oxidative Stability ◽  
Research Work ◽  
Soxhlet Extraction ◽  
Acid Value ◽  
Physicochemical Characteristics ◽  
Ambient Conditions ◽  
Opposite Trend ◽  
Extraction Apparatus ◽  
Soxhlet Extraction Apparatus ◽  
Moringa Peregrina

The present research work was intended to study the influence of roasting and germination of the kernel seeds of Sudanese Moringa peregrina on the physicochemical characteristics and the oxidative stability of the extracted oil. Roasting was carried out at 180 ˚C for 25 minutes, whereas germination was done at ambient conditions in a wet jute bag for 5–7 days. The oil was extracted using n-hexane in a Soxhlet extraction apparatus. The results show that the oil contains α-tocopherols (152mg/kg) and oleic acid (above 70%) as the major tocols and fatty acids, respectively. Germination reduced the peroxide value and increased the acid value in a significant way (p < 0.05) whereas the opposite trend was noticed in the case of roasting. It is crucial to note that, with the exception of the acid value of the germinated sample, peroxide and acid values remained below one meq O2/Kg of oil and one mg KOH/g of oil, respectively. The oxidative stability of the oil from the roasted sample was increased almost by 80% compared to the raw one. Roasting of the kernels prior to oil extraction is imperative for improving its oxidation resistance and the physicochemical characteristics.

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