Article
Chemistry, Physical
J. P. Owejan, S. G. Goebel
Summary: This paper proposes a fuel cell architecture designed for continuous manufacturing, aiming to improve stack design by integrating all components into a rolled good. Experimental results show that a porous rib cathode flow field has performance advantages under certain operating conditions.
JOURNAL OF POWER SOURCES
(2021)
Article
Materials Science, Multidisciplinary
Kashif Nazar, Mujtaba Hussain Jaffery, Imran Shakir, Atif Nazar, Rizwan Raza
Summary: This paper presents a mathematical and MATLAB simulation model of a 1 KW PEM fuel cell system to analyze the yield behavior and fuel utilization control. The performance of the model is evaluated in two cases, considering the presence of a fuel regulator and varying the operating temperature. The study emphasizes the potential of PEM fuel cell based power systems in addressing environmental concerns in South Asia, particularly in Pakistan.
CURRENT APPLIED PHYSICS
(2022)
Article
Chemistry, Physical
Sang Woo Kim, Beni Adi Trisna, Minkyo Yin, Jeongsik Lim, Tae Kyu Ahn, Jeongsoon Lee
Summary: A hydrogen impurity analyzer (HIA) based on mobile gas chromatography with a thermal conductivity detector is developed and evaluated for quality assurance of hydrogen fuel. The HIA can detect impurities such as O2, N2, Ar, and CH4, and meets the requirements of ISO 14687. This system offers enhanced mobility for online inspections.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Green & Sustainable Science & Technology
Jiawei Xu, Yuhua Wu, Shengying Xiao, Yifei Wang, Xinhai Xu
Summary: The high temperature proton exchange membrane fuel cell integrated with the methanol steam reformer is a promising technology. This study evaluates the performance of the fuel cell fed with a mixture of H2, CO, and other impurities. The results show that the presence of CH3OH with CO benefits the fuel cell performance at low current densities but aggravates CO poisoning at high current densities.
Article
Energy & Fuels
Daokuan Jiao, Kui Jiao, Qing Du
Summary: A phase change solver was developed to model vapor condensation in reconstructed GDL, finding that GDL without rib had lower water saturation and the growth of liquid water saturation was highly sensitive to local temperature. The rib was not beneficial for oxygen diffusion and hindered condensate water transport, increasing the risks of water flooding.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2021)
Article
Chemistry, Multidisciplinary
Jacopo Ceccarelli, Stefano Dugheri, Giovanni Cappelli, Niccolo Fanfani, Donato Squillaci, Elisabetta Bucaletti, Nicola Mucci, Giulio Arcangeli
Summary: In this study, an innovative, greener, and safer method for the simultaneous recognition and quantification of anhydrides and acids is developed using direct injection gas chromatography-mass spectrometry. The sample pretreatment involves selective esterification with absolute ethanol on the anhydride, followed by a treatment with boron trifluoride-methanol for the methylation of remaining carboxylic groups. The limit of detection-limit of quantification (LOD-LOQ) values for trimellitic, phthalic, and maleic anhydrides are 0.31-0.93, 0.47-1.41, and 0.06-0.18 μg/mL, respectively.
Article
Chemistry, Physical
S. Vengatesan, R. Venkadesh, A. V. R. Shivaram, M. Wasim Khan
Summary: The mechanical aspect of understanding the dynamic behaviour is crucial in the stack assembly of fuel cell configuration to avoid catastrophic failure. Dynamic analysis of a PEMFC is performed to understand its response during complex loading nature. The thickness of the bipolar plate is observed to play a vital role in the vibration behavior of the PEMFC.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Thermodynamics
Hanbey Hazar, Mustafa Yilmaz, Huseyin Sevinc
Summary: This study designed five flow fields as alternatives to the serpentine flow field, with Parallel M-type showing the highest power density and Stair type demonstrating the lowest power density.
ENERGY CONVERSION AND MANAGEMENT
(2021)
Article
Thermodynamics
Tabbi Wilberforce, Hegazy Rezk, A. G. Olabi, Emmanuel I. Epelle, Mohammad Ali Abdelkareem
Summary: One of the primary challenges in fuel cell modeling is determining specific boundary conditions, which are often not fully provided by the manufacturer. This study proposed using five different algorithms to determine seven unknown parameters that affect the mathematical modeling of the cell. The artificial ecosystem-based algorithm showed the best results compared to other algorithms, indicating its effectiveness in improving accuracy and predicting performance.
Article
Energy & Fuels
Duy Khang Dang, Biao Zhou
Summary: Liquid water management is crucial for the performance and durability of proton exchange membrane fuel cells. Nature-inspired leaf-like designs with branching configurations show more efficient water management and better fuel cell performance. Studying air-liquid water transport phenomena in biomimetic flow field designs can provide insights for improving flow field designs.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2021)
Article
Energy & Fuels
Hanbey Hazar, Mustafa Yilmaz, Huseyin Sevinc
Summary: This study investigates the impact of flow field design on the performance of PEM fuel cells and finds that the geometric dimensions of the flow channels significantly affect the chemical reactions and electrical characteristics of the cell.
Article
Chemistry, Physical
Libin Zhang, Shuai Liu, Zhong Wang, Ruina Li, Qixia Zhang
Summary: Understanding the two-phase distribution in the multi-gas channel of a fuel cell is crucial for improving its performance. This paper used the volume of fluid model to predict water behavior, analyze pressure drop, velocity distribution, and flow resistance coefficient in different channels, and investigate the impact of operating conditions, surface wettability, and channel structure on two-phase distribution. The results showed that inlet velocity and surface wettability significantly affect flow distribution uniformity, and rectangular channels have better water removal and flow distribution uniformity.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Thermodynamics
Yu Zhou, Kai Meng, Wenshang Chen, Qihao Deng, Ben Chen
Summary: This paper experimentally demonstrates that the performance of the designed PEMFC with novel flow fields is improved compared to the traditional parallel flow field. A 3D numerical model analysis shows that the ICFF with 3D structural optimization outperforms the OSWFF with 2D structural optimization in terms of water-gas transport characteristics. The ICFF exhibits a 106% increase in effective mass transfer coefficient and a 258% improvement in efficiency evaluation criterion. Moreover, the dual-inlet mode shows a 7% improvement in oxygen uniformity and a 28% improvement in velocity uniformity compared to the single-inlet mode, enhancing the stability of the electrochemical reaction and the distribution of liquid water, thus enhancing PEMFC performance.
ENERGY CONVERSION AND MANAGEMENT
(2023)
Article
Chemistry, Multidisciplinary
Sanghyoun Park, Sangyong Lee
Summary: In order to improve the overall efficiency of a fuel processor and high temperature-proton exchange membrane fuel cell (HT-PEMFC) system, it is necessary to enhance the efficiency of the fuel processor. This research used the Aspen Hysys(R) simulator to simulate the fuel processor and investigate the impact of various operating conditions on the total efficiency. The thermal efficiency of the fuel processor increased with higher temperature and steam-to-carbon ratio, and it was higher at an S/C ratio of 3 compared to an S/C ratio of 4 at a reformer temperature of 700°C or higher. By recycling unreacted hydrogen from the anode off-gas (AOG) of the HT-PEMFC, the overall efficiency of the combined fuel processor and HT-PEMFC was improved by a factor of 1.28. Excessive heat supply from the AOG was excluded from the selected operating conditions. The high-efficiency operating conditions for a household HT-PEMFC with a capacity of 5 kW were proposed.
APPLIED SCIENCES-BASEL
(2023)
Article
Chemistry, Physical
Minsoo Kang, Jaebong Sim, Kyoungdoug Min
Summary: The effects of surface and interior degradation of the gas diffusion layer (GDL) on the performance and durability of polymer electrolyte membrane fuel cells (PEMFCs) were investigated using three freeze-thaw accelerated stress tests. The results showed that surface degradation of GDL caused a decrease in capillary pressure, while interior degradation increased mass transport resistance, affecting the performance of the fuel cells.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Engineering, Environmental
Godwin Severa, Keith Bethune, Richard Rocheleau, Scott Higgins
CHEMICAL ENGINEERING JOURNAL
(2015)
Article
Materials Science, Multidisciplinary
Benjamin D. Gould, Joseph A. Rodgers, Michael Schuette, Keith Bethune, Shaquille Louis, Richard Rocheleau, Karen Swider-Lyons
ECS JOURNAL OF SOLID STATE SCIENCE AND TECHNOLOGY
(2015)
Article
Chemistry, Physical
M. A. Rubio, K. Bethune, A. Urquia, J. St-Pierre
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2016)
Article
Electrochemistry
Tatyana V. Reshetenko, Guido Bender, Keith Bethune, Richard Rocheleau
ELECTROCHIMICA ACTA
(2011)
Article
Electrochemistry
Tatyana V. Reshetenko, Guido Bender, Keith Bethune, Richard Rocheleau
ELECTROCHIMICA ACTA
(2012)
Article
Electrochemistry
Tatyana V. Reshetenko, Guido Bender, Keith Bethune, Richard Rocheleau
ELECTROCHIMICA ACTA
(2012)
Article
Electrochemistry
Tatyana V. Reshetenko, Guido Bender, Keith Bethune, Richard Rocheleau
ELECTROCHIMICA ACTA
(2012)
Article
Electrochemistry
Tatyana V. Reshetenko, Guido Bender, Keith Bethune, Richard Rocheleau
ELECTROCHIMICA ACTA
(2013)
Article
Chemistry, Physical
Tatyana V. Reshetenko, Keith Bethune, Richard Rocheleau
JOURNAL OF POWER SOURCES
(2012)
Article
Chemistry, Physical
Guido Bender, Michael Angelo, Keith Bethune, Richard Rocheleau
JOURNAL OF POWER SOURCES
(2013)
Article
Chemistry, Physical
Y. Zhai, G. Bender, K. Bethune, R. Rocheleau
JOURNAL OF POWER SOURCES
(2014)
Article
Chemistry, Physical
Tatyana V. Reshetenko, Keith Bethune, Miguel A. Rubio, Richard Rocheleau
JOURNAL OF POWER SOURCES
(2014)
Article
Electrochemistry
Y. Zhai, K. Bethune, G. Bender, R. Rocheleau
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2012)
Proceedings Paper
Electrochemistry
Tatyana V. Reshetenko, Jean St-Pierre, Keith Bethune, Richard Rocheleau
POLYMER ELECTROLYTE FUEL CELLS 11
(2011)
Proceedings Paper
Electrochemistry
Michael S. Angelo, Jean St-Pierre, Keith P. Bethune, Richard E. Rocheleau
BATTERIES AND ENERGY TECHNOLOGY (GENERAL)- 219TH ECS MEETING
(2011)
Article
Chemistry, Physical
Tianyu Chen, Zhibin Lu, Guangjin Zeng, Yongmin Xie, Jie Xiao, Zhifeng Xu
Summary: The study introduces a high-performance LSGM electrolyte-supported tubular DC-SOFC stack for portable applications, which shows great potential in developing into high-performing, efficient, and environmentally friendly portable power sources for distributed applications.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Wenbin Tong, Yili Chen, Shijie Gong, Shaokun Zhu, Jie Tian, Jiaqian Qin, Wenyong Chen, Shuanghong Chen
Summary: In this study, a three-dimensional porous NiO interface layer with enhanced anode dynamics is fabricated, forming a Schottky contact with the zinc substrate, allowing rapid and uniform zinc plating both inside and below the interface layer. The resulting NiO@Zn exhibits exceptional stability and high capacity retention.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Yafeng Bai, Kaidi Li, Liying Wang, Yang Gao, Xuesong Li, Xijia Yang, Wei Lu
Summary: In this study, a flexible zinc ion supercapacitor with gel electrolytes, porous alpha-MnO2@reduced graphene oxide cathode, and activated carbon/carbon cloth anode was developed. The device exhibits excellent electrochemical performance and stability, even at low temperatures, with a high cycle retention rate after 5000 cycles.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Anmol Jnawali, Matt D. R. Kok, Francesco Iacoviello, Daniel J. L. Brett, Paul R. Shearing
Summary: This article presents the results of a systematic study on the electrochemical performance and mechanical changes in two types of commercial batteries with different anode chemistry. The study reveals that the swelling of anode layers in batteries with silicon-based components causes deformations in the jelly roll structure, but the presence of a small percentage of silicon does not significantly impact the cycling performance of the cells within the relevant state-of-health range for electric vehicles (EVs). The research suggests that there is room for improving the cell capacities by increasing the silicon loading in composite anodes to meet the increasing demands on EVs.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Yohandys A. Zulueta, My Phuong Pham-Ho, Minh Tho Nguyen
Summary: Advanced atomistic simulations were used to study ion transport in the Na- and K-doped lithium disilicate Li2Si2O5. The results showed that Na and K doping significantly enhanced Li ion diffusion and conduction in the material.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Zongying Han, Hui Dong, Yanru Yang, Hao Yu, Zhibin Yang
Summary: An efficient phase inversion-impregnation approach is developed to fabricate BaO-decorated Ni8 mol% YSZ anode-supported tubular solid oxide fuel cells (SOFCs) with anti-coking properties. BaO nanoislands are successfully introduced inside the Ni-YSZ anode, leading to higher peak power densities and improved stability in methane fuel. Density functional theory calculations suggest that the loading of BaO nanoislands facilitates carbon elimination by capturing and dissociating H2O molecules to generate OH.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Suresh Mamidi, Dan Na, Baeksang Yoon, Henu Sharma, Anil D. Pathak, Kisor Kumar Sahu, Dae Young Lee, Cheul-Ro Lee, Inseok Seo
Summary: Li-CO2 batteries, which utilize CO2 and have a high energy density, are hindered in practical applications due to slow kinetics and safety hazards. This study introduces a stable and highly conductive ceramic-based solid electrolyte and a metal-organic framework catalyst to improve the safety and performance of Li-CO2 batteries. The optimized Li-CO2 cell shows outstanding specific capacity and cycle life, and the post-cycling analysis reveals the degradation mechanism of the electrodes. First-principles calculations based on density functional theory are also performed to understand the interactions between the catalyst and the host electrode. This research demonstrates the potential of MOF cathode catalyst for stable operation in Li-CO2 batteries.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Ganghua Xiang, Zhihuan Qiu, Huilong Fei, Zhigang Liu, Shuangfeng Yin, Yuen Wu
Summary: In this study, a CeFeOx-supported Pt single atoms and subnanometric clusters catalyst was developed, which exhibits enhanced catalytic activity and stability for the preferential oxidation of CO in H2-rich stream through synergistic effect.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Dimitrios Chatzogiannakis, Marcus Fehse, Maria Angeles Cabanero, Natalia Romano, Ashley Black, Damien Saurel, M. Rosa Palacin, Montse Casas-Cabanas
Summary: By coupling electrochemical testing to operando synchrotron based X-ray absorption and powder diffraction experiments, blended positive electrodes consisting of LiMn2O4 spinel (LMO) and layered LiNi0.5Mn0.3Co0.2O2 (NMC) were studied to understand their redox mechanism. It was found that blending NMC with LMO can enhance energy density at high rates, with the blend containing 25% LMO showing the best performance. Testing with a special electrochemical setup revealed that the effective current load on each blend component can vary significantly from the nominal rate and also changes with SoC. Operando studies allowed monitoring of the oxidation state evolution and changes in crystal structure, in line with the expected behavior of individual components considering their electrochemical current loads.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Chiara Cementon, Daniel Dewar, Thrinathreddy Ramireddy, Michael Brennan, Alexey M. Glushenkov
Summary: This Perspective discusses the specific power and power density of lithium-ion capacitors, highlighting the fact that their power characteristics are often underestimated. Through analysis, it is found that lithium-ion capacitors can usually achieve power densities superior to electrochemical supercapacitors, making them excellent alternatives to supercapacitors.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Weihao Wang, Hao Yu, Li Ma, Youquan Zhang, Yuejiao Chen, Libao Chen, Guichao Kuang, Liangjun Zhou, Weifeng Wei
Summary: This study achieved an improved electrolyte with excellent low-temperature and high-voltage performance by regulating the Li+ solvation structure and highly concentrating it. The electrolyte exhibited outstanding oxidation potential and high ionic conductivity under low temperature and high voltage conditions, providing a promising approach for the practical application of high-voltage LIBs.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Martin Bures, Dan Gotz, Jiri Charvat, Milos Svoboda, Jaromir Pocedic, Juraj Kosek, Alexandr Zubov, Petr Mazur
Summary: Vanadium redox flow battery is a promising energy storage solution with long-term durability, non-flammability, and high overall efficiency. Researchers have developed a mathematical model to simulate the charge-discharge cycling of the battery, and found that hydraulic connection of electrolyte tanks is the most effective strategy to reduce capacity losses, achieving a 69% reduction.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
M. Rodriguez-Gomez, J. Campo, A. Orera, F. de La Fuente, J. Valenciano, H. Fricke, D. S. Hussey, Y. Chen, D. Yu, K. An, A. Larrea
Summary: In this study, we analysed the operando performance of industrial lead cells using neutron diffraction experiments. The experiments revealed the evolution of different phases in the positive electrode, showed significant inhomogeneity of phase distribution inside the electrode, and estimated the energy efficiency of the cells.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Jiawei Liu, Chenpeng Wang, Yue Yao, Hao Ye, Yinglong Liu, Yingli Liu, Xiaoru Xu, Zhicong Chen, Huazheng Yang, Gang Wu, Libin Lei, Chao Wang, Bo Liang
Summary: The study focuses on utilizing double conductive Ni-pads as anode collectors in micro-tubular solid oxide fuel cells. The simulation results show excellent performance and stability of DCNPs, and also highlight the potential applications in various fields.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Yang Wang, Kangjie Zhou, Lang Cui, Jiabing Mei, Shengnan Li, Le Li, Wei Fan, Longsheng Zhang, Tianxi Liu
Summary: This study presents a polyimide sandwiched separator (s-PIF) for improving the cycling stability of Li-metal batteries. The s-PIF separator exhibits superior mechanical property, electrolyte adsorption/retention and ion conductivity, and enables dendrite-free Li plating/stripping process.
JOURNAL OF POWER SOURCES
(2024)