scholarly journals LARGE-SCALE PRODUCTION OF HYDROGEN BY NUCLEAR ENERGY FOR THE HYDROGEN ECONOMY

2003 ◽  
Author(s):  
KR SCHULTZ ◽  
LC BROWN ◽  
GE BESENBRUCH ◽  
CJ HAMILTON
Keyword(s):  
Nuclear Energy ◽  
Large Scale ◽  
Scale Production ◽  
Hydrogen Economy ◽  
Large Scale Production ◽  
Production Of Hydrogen

Iron and Nitrogen Co-doped CoSe2 Nanosheet Arrays for Robust Electrocatalytic Water Oxidation

2021 ◽  
Author(s):  
Di Li ◽  
Yingying Xing ◽  
Changjian Zhou ◽  
Yikai Lu ◽  
Shengjie Xu ◽  
...  
Keyword(s):  
Water Splitting ◽  
Water Oxidation ◽  
Energy Barrier ◽  
Large Scale ◽  
Scale Production ◽  
Reaction Energy ◽  
Large Scale Production ◽  
Nanosheet Arrays ◽  
Production Of Hydrogen ◽  
Co Doped

The high reaction energy barrier of the oxygen evolution reaction (OER) extremely reduces the efficiency of water splitting, which is not conducive to large-scale production of hydrogen. Due to the...

scholarly journals Electrochemically derived functionalized graphene for bulk production of hydrogen peroxide

2020 ◽  
Vol 11 ◽  
pp. 432-442 ◽  
Author(s):  
Munaiah Yeddala ◽  
Pallavi Thakur ◽  
Anugraha A ◽  
Tharangattu N Narayanan
Keyword(s):  
Large Scale ◽  
Reduction Reaction ◽  
Single Step ◽  
Scale Production ◽  
Functionalized Graphene ◽  
Large Scale Production ◽  
Production Of Hydrogen ◽  
Electron Reduction ◽  
Bulk Production ◽  
Carbon Based

On-site peroxide generation via electrochemical reduction is gaining tremendous attention due to its importance in many fields, including water treatment technologies. Oxidized graphitic carbon-based materials have been recently proposed as an alternative to metal-based catalysts in the electrochemical oxygen reduction reaction (ORR), and in this work we unravel the role of C=O groups in graphene towards sustainable peroxide formation. We demonstrate a versatile single-step electrochemical exfoliation of graphite to graphene with a controllable degree of oxygen functionalities and thickness, leading to the formation of large quantities of functionalized graphene with tunable rate parameters, such as the rate constant and exchange current density. Higher oxygen-containing exfoliated graphene is known to undergo a two-electron reduction path in ORR having an efficiency of about 80 ± 2% even at high overpotential. Bulk production of H2O2 via electrolysis was also demonstrated at low potential (0.358 mV vs RHE), yielding ≈34 mg/L peroxide with highly functionalized (≈23 atom %) graphene and ≈16 g/L with low functionalized (≈13 atom %) graphene, which is on par with the peroxide production using state-of-the-art precious-metal-based catalysts. Hence this method opens a new scheme for the single-step large-scale production of functionalized carbon-based catalysts (yield ≈45% by weight) that have varying functionalities and can deliver peroxide via the electrochemical ORR process.

scholarly journals Hydrogen: Technologies, Policies and Challenges

2012 ◽  
Vol 260-261 ◽  
pp. 28-33
Author(s):  
Jun Zhang ◽  
Lu Cheng Ji ◽  
Bo Jin
Keyword(s):  
Energy Source ◽  
Alternative Energy ◽  
Large Scale ◽  
Fossil Fuels ◽  
Hydrogen Energy ◽  
Scale Production ◽  
Hydrogen Economy ◽  
Energy Technologies ◽  
Large Scale Production ◽  
Social And Economic Development

Hydrogen energy has been considered as a clean alternative energy source substituting fossil fuels. Many countries consider it as the ultimate solution to the energy and environmental problems, even draw up the blueprint of “hydrogen economy” and heavily invest for research and development. However, after decades of research, the hydrogen energy technologies are still being prospective and explored, and haven’t been put into large scale production by now. This article begins with expatiation on the essence of hydrogen energy, makes analysis of various big challenges for hydrogen energy technologies, and reaches the conclusion that we should hold the rational and cautious attitude towards hydrogen energy source because the transition to hydrogen economy of unclear prospect must pay a very high cost, which is unbearable for the social and economic development status of developing countries.

F, P double-doped Fe3O4 with abundant defect sites for efficient hydrogen evolution at high current density

2021 ◽  
Author(s):  
Xin-Yu Zhang ◽  
Fengting Li ◽  
Ruo-Yao Fan ◽  
Jie Zhao ◽  
Bin Dong ◽  
...  
Keyword(s):  
High Activity ◽  
Current Density ◽  
Large Scale ◽  
High Current Density ◽  
Scale Production ◽  
High Current ◽  
Simple Method ◽  
Large Scale Production ◽  
Defect Sites ◽  
Production Of Hydrogen

Developing of high-activity electrocatalysts that can operate stably at high current density is important but still challenging for large-scale production of hydrogen. Herein, we report a simple method for constructing...

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