Article
Thermodynamics
Hegazy Rezk, A. G. Olabi, Seydali Ferahtia, Enas Taha Sayed
Summary: In this study, a novel identification approach based on the bald eagle search algorithm (BES) is suggested for estimating the characteristics of proton exchange membrane fuel cells (PEMFC). The BES method outperforms other algorithms and provides accurate results.
Article
Chemistry, Physical
Lei Liu, Yijing Xing, Zhiyong Fu, Yifan Li, Zhuoqun Li, Haibin Li
Summary: In this study, a novel approach for preparing membrane electrode assemblies (MEAs) is proposed to optimize the interface combination and durability of proton exchange membrane (PEM) and catalyst layers (CLs). This approach combines a wet-contact interface design strategy and expanded polytetrafluoroethylene (ePTFE) reinforcing technology. The MEAs prepared using the wet-contact process show significantly reduced interfacial resistance and charge-transfer resistance, improved electrochemical surface area, and superior power performance compared to conventional MEAs. The insertion of ePTFE reinforcement skeletons into the PFSA membrane also reduces hydrogen crossover and mechanical degradation.
JOURNAL OF POWER SOURCES
(2023)
Article
Chemistry, Physical
Jeehoon Shin, Mingyu Son, Sun- Kim, Shin Ae Song, Duck Hyun Lee
Summary: Efficient catalyst layer design is crucial for the performance and stability of proton exchange membrane fuel cells. Gradient multilayer design can increase efficiency and improve performance.
JOURNAL OF POWER SOURCES
(2023)
Article
Environmental Sciences
Asif Jamil, Sikander Rafiq, Tanveer Iqbal, Hafiza Aroosa Aslam Khan, Haris Mahmood Khan, Babar Azeem, M. Z. Mustafa, Abdulkader S. Hanbazazah
Summary: Fuel cells are environmentally friendly technology with high efficiency and economic advantages. Proton exchange membranes, especially for hydrogen fuel cells, have great potential but face challenges in terms of cost and degradation of proton exchange capacity over time.
Article
Energy & Fuels
Abhay Kumar Choudhary, Hiralal Pramanik
Summary: In this study, response surface methodology was used to optimize the major operating parameters of direct ethanol fuel cells for maximum power density. A second-order model was established and validated experimentally, showing that cell temperature had the greatest impact on power density, followed by anode electrocatalyst loading and ethanol concentration. The experimental results closely matched the computed values, demonstrating the effectiveness of optimization through response surface methodology.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2021)
Article
Energy & Fuels
Guolong Lu, Wenxuan Fan, Dafeng Lu, Taotao Zhao, Qianqian Wu, Mingxin Liu, Zhenning Liu
Summary: This study presents a modular tri-layer lung-inspired hybrid flow field (LHFF) design for proton exchange membrane fuel cells (PEMFC), incorporating advantages of 2D and 3D flow fields. The optimized LHFFs using response surface methodology and artificial intelligence methodology show a significant increase in maximum net power density, with high consistency between numerical and experimental results. The reliability of artificial intelligence in optimizing PEMFC flow field is demonstrated, providing a promising solution for improving flow fields in other electrochemical systems.
Article
Chemistry, Physical
Lixin Fan, Zhengkai Tu, Siew Hwa Chan
Summary: This study designed and fabricated an air-cooled PEMFC with a rated power of 1.1 kW for a sightseeing bus, which can extend the vehicle range from 40 km to 70 km. A voltage-based control logic of purging was proposed and verified to maintain a fuel utilization of 97.84% with a sufficient voltage recovery. The driving characteristics of three typical powertrain systems, FCEV, HBEV, and RE-FCEV, were compared, and the RE-FCEV combines the advantages of FCEV and HBEV with stable PEMFC output.
JOURNAL OF POWER SOURCES
(2022)
Review
Energy & Fuels
Nur Ain Masleeza Harun, Norazuwana Shaari, Nik Farah Hanis Nik Zaiman
Summary: SPEEK is recognized as a promising alternative PEM in fuel cell applications due to its advantageous properties, but its proton conductivity is influenced by the degree of sulfonation. While high DS of SPEEK can produce high proton conductivity, excessive production of DS may have side effects on membrane stability. Therefore, finding the optimal DS of SPEEK is crucial for fabricating PEM alternatives.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2021)
Article
Chemistry, Physical
Mingruo Hu, Runxian Zhao, Ruixin Pan, Guangyi Cao
Summary: A three-step method is proposed to increase the efficiency of activating a newly-built MEA, showing improvements in fuel cell performance by changing activation temperatures. Through CV and EIS testing, two new indexes were introduced to analyze the internal mechanism of the activation method. It was found that the three-step activation method includes pore digging effect and pore swelling effect, which contribute differently in Step 1 and Step 2.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Green & Sustainable Science & Technology
Xuan Linh Nguyen, Hoang Nghia Vu, Sangseok Yu
Summary: The study found that temperature and wet side relative humidity have a more significant impact on vapor transport rate, while counter-current flow consistently outperformed co-current flow under the same conditions. New diffusivity correlations were proposed for the membrane module based on temperature, relative humidity, and pressure.
Review
Polymer Science
Sadhasivam Thangarasu, Tae-Hwan Oh
Summary: Cellulose-based membranes have attracted attention as ion exchange membranes in proton exchange membrane fuel cells and alkaline fuel cells. The focus of research is on enhancing their functional properties and reducing production costs.
Article
Engineering, Chemical
Nam Il Kim, Beum Geun Seo, Hae Wook Park, Jung Woo Shim, Hyun Jin Kong, Joon Hyung Shim
Summary: Coating a reinforced composite membrane with a hydrophilic Pt layer improves the durability of polymer membranes used in fuel cell applications. A Pt coating was introduced onto the composite membrane, resulting in increased hydrophilicity and better performance. The Pt-coated composite membrane showed less degradation and lower fluorine emission rate, making it a potential candidate for proton exchange membrane fuel cells.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Article
Chemistry, Physical
Rizk M. Rizk-Allah, Attia A. El-Fergany
Summary: Modeling and optimization of PEMFCs pose challenges due to their multi-variability and nonlinearity. The IAEO algorithm demonstrates superior efficiency and robustness in addressing these issues.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Thermodynamics
Chen Wang, Qiyin Lin, Zongkun Pan, Jun Hong, Heng Shao, Yewen Mai
Summary: This paper proposes a new method to improve the thermal contact performance of precision mechanical equipment by designing the material stiffness of the contact interface. The optimization designs of electronic chip packaging and proton exchange membrane fuel cell are carried out based on this method, achieving significant improvement in thermal contact performance.
INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER
(2023)
Article
Chemistry, Physical
Shikun Zhou, Gongnan Xie, Haibao Hu, Meng Ni
Summary: Proton exchange membrane fuel cells (PEMFCs) are clean and efficient power sources. The proposed new gas diffusion layer (GDL) with non-uniform distribution of PTFE effectively removes water from the catalyst layer (CL), improving fuel cell performance.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Engineering, Chemical
G. K. Celep, K. Dincer
INTERNATIONAL POLYMER PROCESSING
(2017)
Article
Physics, Applied
Aytac Gultekin, Gamze Karanfil, Faruk Ozel, Mahmut Kus, Ridvan Say, Savas Sonmezoglu
EUROPEAN PHYSICAL JOURNAL-APPLIED PHYSICS
(2013)
Article
Chemistry, Physical
Seckin Akin, Gamze Karanfil, Aytac Gultekin, Savas Sonmezoglu
JOURNAL OF ALLOYS AND COMPOUNDS
(2013)
Article
Chemistry, Multidisciplinary
Aytac Gultekin, Gamze Karanfil, Faruk Ozel, Mahmut Kus, Ridvan Say, Savas Sonmezoglu
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2014)
Article
Chemistry, Analytical
Aytac Gultekin, Gamze Karanfil, Mahmut Kus, Savas Sonmezoglu, Ridvan Say
Article
Food Science & Technology
Aytac Gueltekin, Gamze Karanfil Celep, Ridvan Say
JOURNAL OF FOOD MEASUREMENT AND CHARACTERIZATION
(2018)
Article
Chemistry, Multidisciplinary
Aytac Gultekin, Abdulkadir Unuvar, Gamze Karanfil, Ibrahim Yilmaz, Ridvan Say
SUPRAMOLECULAR CHEMISTRY
(2020)
