Pulse Electrodeposited CoFeNiP as Highly Active and Stable Electrocatalyst for Alkaline Water Electrolysis

2021 ◽  
Author(s):  
Yun Li ◽  
Ruopeng Li ◽  
Dan Wang ◽  
Hao Xu ◽  
Xiangyu Lu ◽  
...  
Keyword(s):  
High Performance ◽  
Water Electrolysis ◽  
Cost Effective ◽  
Hydrogen Energy ◽  
Alkaline Water Electrolysis ◽  
Alkaline Water ◽  
Efficient Conversion ◽  
Highly Active ◽  
And Storage

Developing high-performance and cost-effective electrocatalysts for water electrolysis would make a great process for efficient conversion and storage of sustainable hydrogen energy. As a potential electrocatalyst, the improvement of water...

Highly Active Self-Repairing Anode Catalyst for Alkaline Water Electrolysis Using Ni-Based Hybrid Nanosheets

2020 ◽  
Vol MA2020-02 (19) ◽  
pp. 1544-1544
Author(s):  
Yoshiyuki Kuroda ◽  
Shohei Takatsu ◽  
Tatsuya Taniguchi ◽  
Ayaka Oishi ◽  
Ikuo Nagashima ◽  
...  
Keyword(s):  
Water Electrolysis ◽  
Anode Catalyst ◽  
Alkaline Water Electrolysis ◽  
Alkaline Water ◽  
Highly Active

scholarly journals Alkaline Water Electrolysis Powered by Renewable Energy: A Review

Processes ◽  
2020 ◽  
Vol 8 (2) ◽  
pp. 248 ◽  
Author(s):  
Jörn Brauns ◽  
Thomas Turek
Keyword(s):  
Renewable Energy ◽  
Carbon Dioxide Emissions ◽  
High Efficiency ◽  
Operation Time ◽  
Water Electrolysis ◽  
Process Conditions ◽  
Hydrogen Energy ◽  
Alkaline Water Electrolysis ◽  
Spinning Reserve ◽  
Alkaline Water

Alkaline water electrolysis is a key technology for large-scale hydrogen production powered by renewable energy. As conventional electrolyzers are designed for operation at fixed process conditions, the implementation of fluctuating and highly intermittent renewable energy is challenging. This contribution shows the recent state of system descriptions for alkaline water electrolysis and renewable energies, such as solar and wind power. Each component of a hydrogen energy system needs to be optimized to increase the operation time and system efficiency. Only in this way can hydrogen produced by electrolysis processes be competitive with the conventional path based on fossil energy sources. Conventional alkaline water electrolyzers show a limited part-load range due to an increased gas impurity at low power availability. As explosive mixtures of hydrogen and oxygen must be prevented, a safety shutdown is performed when reaching specific gas contamination. Furthermore, the cell voltage should be optimized to maintain a high efficiency. While photovoltaic panels can be directly coupled to alkaline water electrolyzers, wind turbines require suitable converters with additional losses. By combining alkaline water electrolysis with hydrogen storage tanks and fuel cells, power grid stabilization can be performed. As a consequence, the conventional spinning reserve can be reduced, which additionally lowers the carbon dioxide emissions.

High-performance alkaline water electrolysis using Aemion™ anion exchange membranes

2020 ◽  
Vol 451 ◽  
pp. 227814 ◽  
Author(s):  
Patrick Fortin ◽  
Thulile Khoza ◽  
Xinzhi Cao ◽  
Stig Yngve Martinsen ◽  
Alejandro Oyarce Barnett ◽  
...  
Keyword(s):  
Anion Exchange ◽  
High Performance ◽  
Water Electrolysis ◽  
Anion Exchange Membranes ◽  
Alkaline Water Electrolysis ◽  
Alkaline Water

Cost-Effective Alkaline Water Electrolysis Based on Nitrogen- and Phosphorus-Doped Self-Supportive Electrocatalysts

2017 ◽  
Vol 29 (34) ◽  
pp. 1702095 ◽  
Author(s):  
Muhammad-Sadeeq Balogun ◽  
Weitao Qiu ◽  
Yongchao Huang ◽  
Hao Yang ◽  
Ruimei Xu ◽  
...  
Keyword(s):  
Water Electrolysis ◽  
Cost Effective ◽  
Alkaline Water Electrolysis ◽  
Nitrogen And Phosphorus ◽  
Alkaline Water ◽  
Phosphorus Doped

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 Boosting alkaline water electrolysis by asymmetric temperature modulation

2021 ◽  
Vol 119 (1) ◽  
pp. 013901
Author(s):  
Qinpeng Zhu ◽  
Peihua Yang ◽  
Tao Zhang ◽  
Zehua Yu ◽  
Kang Liu ◽  
...  
Keyword(s):  
Water Electrolysis ◽  
Temperature Modulation ◽  
Alkaline Water Electrolysis ◽  
Alkaline Water

High-performance anion exchange membrane alkaline seawater electrolysis

2021 ◽  
Author(s):  
Yoo Sei Park ◽  
Jooyoung Lee ◽  
Myeong-Je Jang ◽  
Juchan Yang ◽  
Jae Hoon Jeong ◽  
...  
Keyword(s):  
Anion Exchange ◽  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
High Performance ◽  
Anion Exchange Membrane ◽  
Hydrogen Energy ◽  
Highly Active ◽  
Production Of Hydrogen ◽  
Exchange Membrane ◽  
Seawater Electrolysis

Seawater electrolysis is a promising technology for the production of hydrogen energy and seawater desalination. To produce hydrogen energy through seawater electrolysis, highly active electrocatalysts for the oxygen evolution reaction...

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