Submit to Energies Review for Energies Propose a Special Issue

Journal Browser

► Journal Browser

Diversified Technologies Based on Hydrogen Energy: Mechanical, Thermal, Chemical, Biological, and/or Electrochemical Processes

Print Special Issue Flyer
Special Issue Editors
Special Issue Information
Keywords
Published Papers

A special issue of Energies (ISSN 1996-1073). This special issue belongs to the section "A5: Hydrogen Energy".

Deadline for manuscript submissions: closed (30 June 2022) | Viewed by 18654

Share This Special Issue

Special Issue Editor

Prof. Dr. Jin-Soo Park

E-Mail Website
Guest Editor

Department of Green Chemical Engineering, College of Engineering, Sangmyung University, Cheonan 31066, Republic of Korea
Interests: ionomer; composite membrane; dispersion; electrocatalyst; catalyst layer; membrane–electrode assembly; proton exchange membrane fuel cell; anion exchange membrane fuel cell; proton exchange membrane water electrolysis; alkaline electrolysis
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Hydrogen is a crucial fuel for the production of electricity and heat in hydrogen economy. The depletion of fossil fuels and the acceleration of climate change drive us to change fossil-fueled technologies into hydrogen-fueled ones. Hydrogen is mainly supplied to processes for the production of ammonia, methanol and petroleum refining. Recently, fast-growing technologies for the use of hydrogen such as fuel cells and industrial areas for the use of hydrogen are shifting from chemical to energy production. Most R&D activities for hydrogen-related technologies are significantly focusing on water electrolysis and fuel cells as hydrogen production and use technology, respectively. However, many conventional and other emerging technologies are related to hydrogen production, storage, distribution, and utilization. This Special Issue aims to provide the hydrogen-related technologies dealing with original analytical and experimental research on all aspects of hydrogen raised by scientists and engineers. All types of submissions including reviews, communications, and full research articles are welcome.

Prof. Dr. Jin-Soo Park
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Energies is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

chloro-alkali process
electrodialysis
reverse electrodialysis
redox flow battery
electrolysis
water splitting
renewable hydrogen production
biological hydrogen production
biocatalyzed electrolysis
by-product hydrogen
nuclear conversion
hydrogen storage
ammonia conversion
carbonate conversion
pressurized hydrogen gas
hydrogen liquefaction
hydrogen distribution
micro heat and power system
reforming
pyrolysis

Published Papers (5 papers)

Download All Papers

Research

Jump to: Review

10 pages, 1979 KiB

Open AccessArticle

Fouling Mitigation of Ion Exchange Membranes in Energy Conversion Devices

by Beom-Seok Kim and Jin-Soo Park

Energies 2022, 15(1), 149; https://0-doi-org.brum.beds.ac.uk/10.3390/en15010149 - 27 Dec 2021

Cited by 4 | Viewed by 1994

Abstract

In this study, three different environmentally friendly fouling mitigation technologies are suggested and are investigated in reverse electrodialysis (RED) to develop the most appropriate fouling mitigation technology for RED: applying direct current, flowing a solution with high salt concentration, and periodically switching river and seawater streams in RED. The quantitative level of anion exchange membrane fouling mitigation is evaluated in terms of the power density and the amount of power generation of RED. Applying a direct current electric field with higher voltage than 8 V was not allowed for fouling mitigation in the two-cell-pair bench RED stack due to decomposition of the redox couple. In comparison of the RED operations with two different fouling mitigation methods using firstly 40-min power generation during in-operation and 40-min fouling mitigation stage during out-of-operation as a cycle for 80 min and secondly 80-min forward power generation and 80-min backward power generation as two cycles. It was found that, over five cycles, the amount of the RED power generation using the former fouling mitigation method is 1.7 times higher than RED power generation using the latter fouling mitigation method. Full article

(This article belongs to the Special Issue Diversified Technologies Based on Hydrogen Energy: Mechanical, Thermal, Chemical, Biological, and/or Electrochemical Processes)

► Show Figures

Figure 1

18 pages, 4620 KiB

Open AccessArticle

An Analysis on the Compressed Hydrogen Storage System for the Fast-Filling Process of Hydrogen Gas at the Pressure of 82 MPa

by Ji-Qiang Li, Ji-Chao Li, Kyoungwoo Park, Seon-Jun Jang and Jeong-Tae Kwon

Energies 2021, 14(9), 2635; https://0-doi-org.brum.beds.ac.uk/10.3390/en14092635 - 04 May 2021

Cited by 15 | Viewed by 4259

Abstract

During the fast-filling of a high-pressure hydrogen tank, the temperature of hydrogen would rise significantly and may lead to failure of the tank. In addition, the temperature rise also reduces hydrogen density in the tank, which causes mass decrement into the tank. Therefore, it is of practical significance to study the temperature rise and the amount of charging of hydrogen for hydrogen safety. In this paper, the change of hydrogen temperature in the tank according to the pressure rise during the process of charging the high-pressure tank in the process of a 82-MPa hydrogen filling system, the final temperature, the amount of filling of hydrogen gas, and the change of pressure of hydrogen through the pressure reducing valve, and the performance of heat exchanger for cooling high-temperature hydrogen were analyzed by theoretical and numerical methods. When high-pressure filling began in the initial vacuum state, the condition was called the “First cycle”. When the high-pressure charging process began in the remaining condition, the process was called the “Second cycle”. As a result of the theoretical analysis, the final temperatures of hydrogen gas were calculated to be 436.09 K for the first cycle of the high-pressure tank, and 403.55 for the second cycle analysis. The internal temperature of the buffer tank increased by 345.69 K and 32.54 K in the first cycle and second cycles after high-pressure filling. In addition, the final masses were calculated to be 11.58 kg and 12.26 kg for the first cycle and second cycle of the high-pressure tank, respectively. The works of the paper can provide suggestions for the temperature rise of 82 MPa compressed hydrogen storage system and offer necessary theory and numerical methods for guiding safe operation and construction of a hydrogen filling system. Full article

(This article belongs to the Special Issue Diversified Technologies Based on Hydrogen Energy: Mechanical, Thermal, Chemical, Biological, and/or Electrochemical Processes)

► Show Figures

Figure 1

11 pages, 5391 KiB

Open AccessArticle

Understanding Membrane Fouling in Electrically Driven Energy Conversion Devices

by Soo-Jin Han and Jin-Soo Park

Energies 2021, 14(1), 212; https://0-doi-org.brum.beds.ac.uk/10.3390/en14010212 - 03 Jan 2021

Cited by 7 | Viewed by 1729

Abstract

Positively charged (cetylpyridinium chloride), negatively charged (sodium dodecyl sulfate), and non-charged (polyethylene glycol) surfactants are used as potential foulant in reverse electrodialysis systems supplying seawater and river freshwater. Fouling tendency of the foulants to ion-exchange membranes is investigated in terms of the adsorption by electromigration, electrostatic attraction, and macromolecule interaction in reverse electrodialysis systems. According to theoretical prediction of fouling tendency, charged foulants in seawater streams could foul ion-exchange membranes significantly. However, the worst fouling behavior is observed when the charged foulants are present in river streams. As a result of zeta potential measurement, it is found that the Debye length of the charged foulants decreases due to the higher ionic strength of seawater streams and causes to lower net electrostatic effect. It finally results in less fouling tendency in reverse electrodialysis. Full article

(This article belongs to the Special Issue Diversified Technologies Based on Hydrogen Energy: Mechanical, Thermal, Chemical, Biological, and/or Electrochemical Processes)

► Show Figures

Figure 1

15 pages, 2961 KiB

Open AccessArticle

A Study on the Prediction of the Temperature and Mass of Hydrogen Gas inside a Tank during Fast Filling Process

by Ji-Qiang Li, No-Seuk Myoung, Jeong-Tae Kwon, Seon-Jun Jang and Taeckhong Lee

Energies 2020, 13(23), 6428; https://0-doi-org.brum.beds.ac.uk/10.3390/en13236428 - 04 Dec 2020

Cited by 19 | Viewed by 3190

Abstract

The hydrogen compression cycle system recycles hydrogen compressed by a compressor at high pressure and stores it in a high-pressure container. Thermal stress is generated due to increase in the pressure and temperature of hydrogen in the hydrogen storage tank during the fast filing process. For the sake of safety, it is of great practical significance to predict and control the temperature change in the tank. The hydrogen charging process in the storage tank of the hydrogen charging station was studied by experimentation and simulation. In this paper, a Computational Fluid Dynamics (CFD) model for non-adiabatic real filling of a 50 MPa hydrogen cylinder was presented. In addition, a shear stress transport (k-ω) model and real gas model were used in order to account for thermo-fluid dynamics during the filling of hydrogen storage tanks (50 MPa, 343 L). Compared to the simulation results with the experimental data carried out under the same conditions, the temperatures calculated from the simulated non-adiabatic condition results were lower (by 5.3%) than those from the theoretical adiabatic condition calculation. The theoretical calculation was based on the experimentally measured pressure value. The calculated simulation mass was 8.23% higher than the theoretical result. The results of this study will be very useful in future hydrogen energy research and hydrogen charging station developments. Full article

(This article belongs to the Special Issue Diversified Technologies Based on Hydrogen Energy: Mechanical, Thermal, Chemical, Biological, and/or Electrochemical Processes)

► Show Figures

Figure 1

Review

Jump to: Research

35 pages, 4363 KiB

Open AccessReview

Towards the Hydrogen Economy—A Review of the Parameters That Influence the Efficiency of Alkaline Water Electrolyzers

by Ana L. Santos, Maria-João Cebola and Diogo M. F. Santos

Energies 2021, 14(11), 3193; https://0-doi-org.brum.beds.ac.uk/10.3390/en14113193 - 29 May 2021

Cited by 42 | Viewed by 6670

Abstract

Environmental issues make the quest for better and cleaner energy sources a priority. Worldwide, researchers and companies are continuously working on this matter, taking one of two approaches: either finding new energy sources or improving the efficiency of existing ones. Hydrogen is a well-known energy carrier due to its high energy content, but a somewhat elusive one for being a gas with low molecular weight. This review examines the current electrolysis processes for obtaining hydrogen, with an emphasis on alkaline water electrolysis. This process is far from being new, but research shows that there is still plenty of room for improvement. The efficiency of an electrolyzer mainly relates to the overpotential and resistances in the cell. This work shows that the path to better electrolyzer efficiency is through the optimization of the cell components and operating conditions. Following a brief introduction to the thermodynamics and kinetics of water electrolysis, the most recent developments on several parameters (e.g., electrocatalysts, electrolyte composition, separator, interelectrode distance) are highlighted. Full article

(This article belongs to the Special Issue Diversified Technologies Based on Hydrogen Energy: Mechanical, Thermal, Chemical, Biological, and/or Electrochemical Processes)

► Show Figures