scholarly journals Biochar-Assisted Iron-Mediated Water Electrolysis Process for Hydrogen Production

ACS Omega ◽  
2020 ◽  
Vol 5 (49) ◽  
pp. 31908-31917
Author(s):  
Gidon Amikam ◽  
Noga Fridman-Bishop ◽  
Youri Gendel
Keyword(s):  
Hydrogen Production ◽  
Water Electrolysis ◽  
Electrolysis Process

Terephthalic acid induced binder-free NiCoP–carbon nanocomposite for highly efficient electrocatalysis of hydrogen evolution reaction

2019 ◽  
Vol 9 (17) ◽  
pp. 4651-4658 ◽  
Author(s):  
Suchada Sirisomboonchai ◽  
Shasha Li ◽  
Akihiro Yoshida ◽  
Suwadee Kongparakul ◽  
Chanatip Samart ◽  
...  
Keyword(s):  
Hydrogen Production ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Terephthalic Acid ◽  
Water Electrolysis ◽  
Electrolysis Process ◽  
Highly Efficient ◽  
Binder Free ◽  
First Time ◽  
Carbon Nanocomposite

NiCoP–carbon nanocomposite based electrocatalyst (NiCoP–C(TPA)/NF) for highly efficient hydrogen production in the water electrolysis process was developed for the first time by a terephthalic acid induced binder-free method.

How to Advance the Hydrogen Production Efficiency by Adding Rare Earths in the Process of Eelectrolysis of Water?

2014 ◽  
Vol 672-674 ◽  
pp. 628-633
Author(s):  
Ju Chi Kuang
Keyword(s):  
Corrosion Resistance ◽  
Hydrogen Production ◽  
Rare Earths ◽  
Production Efficiency ◽  
Electron State ◽  
Positive Impact ◽  
Water Electrolysis ◽  
Clean Energy ◽  
Plating Bath ◽  
Electrolysis Process

Hydrogen is a kind of clean energy, and application is limited because the efficiency of hydrogen production was not high before. This work in the paper was to study how to advance the hydrogen production efficiency by adding rare earths in the process of electrolysis of water. The result of tests proved that the efficiency of hydrogen production of water electrolysis electrode is dramatically improved when a few of REs are added in plating bath, and La cations are more effective than Ce cations when being added in the plating bath. Besides that, this article illustrated positive impact of RE on process of plating as well as effect of RE on composition of the plating and corrosion resistance of surface of the coating. Furthermore, argumentation extended to it that RE alone and compound of La and Ce have affected on efficiency of hydrogen production by water electrolysis process. Finally the paper showed that a new mechanism had been presented in a new angle being established in effect of RE on electron state of Ni plating.

scholarly journals Technologies for production of green hydrogen and hydrogen based synthetic fuels

2021 ◽  
Vol 12 ◽  
pp. 23-39
Author(s):  
Van Nhu Nguyen ◽  
Nhu Tung Truong
Keyword(s):  
Hydrogen Production ◽  
Raw Materials ◽  
Water Electrolysis ◽  
Production Method ◽  
Renewable Energies ◽  
Climate Impacts ◽  
Production Costs ◽  
Carbon Intensity ◽  
Electrolysis Process ◽  
Production Technologies

Hydrogen is an essential material/fuel for industry and energy conversion. The processes for producing hydrogen depend on the raw materials and energy source used. In terms of climate impacts, the most promising hydrogen production method is water electrolysis. The regenerative electrolysis process depends on the carbon intensity of the electricity and the efficiency of converting that electricity into hydrogen. The development of technologies to extract hydrogen (from conventional and renewable resources) tends to optimise the water electrolysis process using renewable energies by extending material durability, increasing performance efficiency, and reducing precious metal contents in catalysts, thereby lowering the production costs. The article introduces the latest advances in green hydrogen production technologies using renewable energies, particularly focusing on water and seawater electrolysis, combining electrolysis and solar energy as well as hydrogen-based synthetic fuel production, hydrogen production from biomass and biogas.

Modelling and control of an alkaline water electrolysis process

2018 ◽  
Vol 1 (2) ◽  
pp. 9-14
Author(s):  
Marisol Cervantes-Bobadilla ◽  
Ricardo Fabricio Escobar Jiménez ◽  
José Francisco Gómez Aguilar ◽  
Tomas Emmanuel Higareda Pliego ◽  
Alberto Armando Alvares Gallegos
Keyword(s):  
Process Model ◽  
Water Electrolysis ◽  
Alkaline Water Electrolysis ◽  
Alkaline Water ◽  
Electrolysis Process ◽  
Linear Dynamic ◽  
Energy Current ◽  
Identification Technique ◽  
Nonlinear Static ◽  
And Control

In this research, an alkaline water electrolysis process is modelled. The electrochemical electrolysis is carried out in an electrolyzer composed of 12 series-connected steel cells with a solution 30% wt of potassium hydroxide. The electrolysis process model was developed using a nonlinear identification technique based on the Hammerstein structure. This structure consists of a nonlinear static block and a linear dynamic block. In this work, the nonlinear static function is modelled by a polynomial approximation equation, and the linear dynamic is modelled using the ARX structure. To control the current feed to the electrolyzer an unconstraint predictive controller was implemented, once the unconstrained MPC was simulated, some restrictions are proposed to design a constrained MPC (CMPC). The CMPC aim is to reduce the electrolyzer's energy consumption (power supply current). Simulation results showed the advantages of using the CMPC since the energy (current) overshoots are avoided.

scholarly journals Adding the activated carbon of rice husk to increase hydrogen production on water electrolysis

2021 ◽  
Vol 1034 (1) ◽  
pp. 012075
Author(s):  
Purnami ◽  
ING. Wardana ◽  
Sudjito ◽  
Denny Widhiyanuriyawan ◽  
Nurkholis Hamidi
Keyword(s):  
Activated Carbon ◽  
Hydrogen Production ◽  
Rice Husk ◽  
Water Electrolysis

scholarly journals Hydrogen production from water electrolysis: role of catalysts

2021 ◽  
Vol 8 (1) ◽  
Author(s):  
Shan Wang ◽  
Aolin Lu ◽  
Chuan-Jian Zhong
Keyword(s):  
Hydrogen Production ◽  
Water Splitting ◽  
Noble Metal ◽  
Active Sites ◽  
Current Knowledge ◽  
Low Cost ◽  
Critical Role ◽  
Water Electrolysis ◽  
Efficient Production ◽  
Production Of Hydrogen

AbstractAs a promising substitute for fossil fuels, hydrogen has emerged as a clean and renewable energy. A key challenge is the efficient production of hydrogen to meet the commercial-scale demand of hydrogen. Water splitting electrolysis is a promising pathway to achieve the efficient hydrogen production in terms of energy conversion and storage in which catalysis or electrocatalysis plays a critical role. The development of active, stable, and low-cost catalysts or electrocatalysts is an essential prerequisite for achieving the desired electrocatalytic hydrogen production from water splitting for practical use, which constitutes the central focus of this review. It will start with an introduction of the water splitting performance evaluation of various electrocatalysts in terms of activity, stability, and efficiency. This will be followed by outlining current knowledge on the two half-cell reactions, hydrogen evolution reaction (HER) and oxygen evolution reaction (OER), in terms of reaction mechanisms in alkaline and acidic media. Recent advances in the design and preparation of nanostructured noble-metal and non-noble metal-based electrocatalysts will be discussed. New strategies and insights in exploring the synergistic structure, morphology, composition, and active sites of the nanostructured electrocatalysts for increasing the electrocatalytic activity and stability in HER and OER will be highlighted. Finally, future challenges and perspectives in the design of active and robust electrocatalysts for HER and OER towards efficient production of hydrogen from water splitting electrolysis will also be outlined.

Hydrogen Production From Water Electrolysis: Current Status and Future Trends

2012 ◽  
Vol 100 (2) ◽  
pp. 410-426 ◽  
Author(s):  
Alfredo Ursua ◽  
Luis M. Gandia ◽  
Pablo Sanchis
Keyword(s):  
Hydrogen Production ◽  
Water Electrolysis ◽  
Current Status ◽  
Future Trends

Hierarchical Microsphere MOF Arrays with Ultralow Ir Doping for Efficient Hydrogen Evolution Coupled with Hydrazine Oxidation in Seawater

2021 ◽  
Author(s):  
Xuejun Zhai ◽  
Qingping Yu ◽  
Guishan Liu ◽  
Junlu Bi ◽  
Yu Zhang ◽  
...  
Keyword(s):  
Hydrogen Production ◽  
Hydrogen Evolution ◽  
Oxygen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Oxygen Evolution Reaction ◽  
Water Electrolysis ◽  
Efficient Catalyst ◽  
Hydrazine Oxidation ◽  
Renewable Hydrogen

Hydrogen evolution reaction (HER) based on water electrolysis is promising for renewable hydrogen production. Limited by sluggish anodic oxygen evolution reaction (OER), rational fabrication of efficient catalyst for HER coupled...

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