Article
Chemistry, Physical
Kush Chadha, Serguei Martemianov, Anthony Thomas
Summary: In this study, two new designs for stainless steel bipolar plates are proposed to improve reactant distribution and pressure drop in fuel cells. The multi-serpentine design shows the best electrical performance, while the hybrid design has the lowest pressure head losses and higher stability over time.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Energy & Fuels
Xun Zhang, Xiaolong Yang, Weitao Gao, Cheng Wang
Summary: In this study, the performance of PEM fuel cells with different baffled flow field plates was experimentally tested, showing that adding baffles can improve the fuel cell's performance and current density distribution uniformity. However, increasing baffle height will also increase pressure drop. To address this issue, a half-baffled flow field design was proposed to maintain current density distribution uniformity while reducing pressure drop.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2021)
Article
Thermodynamics
Kaiyong Hu, Peiyu Zhao, Shixue Wang, Yulin Wang
Summary: A partially narrowed flow field configuration has been proposed and applied to enhance the mass diffusion and water drainage in a polymer electrolyte membrane fuel cell. This study comprehensively investigates the mechanism and effects of this configuration through a 3D multiphase simulation. The results show that optimizing the structural parameters of the partially narrowed flow field configuration improves mass diffusion and water drainage, leading to a 7.5% increase in the fuel cell maximum power density compared to traditional straight flow field.
APPLIED THERMAL ENGINEERING
(2023)
Article
Chemistry, Analytical
Yuting Li, Jingliang Bi, Miao Tang, Gui Lu
Summary: The flow channel design of bipolar plates is crucial for proton exchange membrane fuel cells, and the snowflake-shaped bionic channel design, integrating the advantages of leaf vein shape and lung shape, can significantly improve fuel cell performance and enhance flow uniformity with the help of optimization algorithms.
Article
Chemistry, Physical
Qiao Lan, Dingding Ye, Xun Zhu, Rong Chen, Yang Yang, Tong Zhang, Yuan Zhou, Qiang Liao
Summary: This paper proposes an effective method to optimize gas bubble distribution in microfluidic fuel cells. By adjusting the flow configuration, the gas bubbles are controlled to generate and distribute in the external channel, leading to a reduction in ionic transfer resistance and an improvement in cell performance.
JOURNAL OF POWER SOURCES
(2022)
Article
Engineering, Chemical
Qizhen Xie, Minggang Zheng
Summary: This study proposed a novel spider-web-type flow field for optimizing the cathode flow field of PEMFC. By exploring the impact of polygonal structure and layer number, the optimal scheme was determined to improve performance. The results confirmed the desirability of the optimization scheme in enhancing the cathode flow field performance in PEMFC when compared to the traditional flow field.
Article
Chemistry, Multidisciplinary
Hussein A. Z. AL-bonsrulah, Mohammed J. Alshukri, Ammar I. Alsabery, Ishak Hashim
Summary: This study considers two scenarios to verify the performance and lifetime of PEM-FC using different innovative channel geometries. The results show that a triangular cross-section channel provides better uniformity of pressure distribution and lower mechanical stresses.
APPLIED SCIENCES-BASEL
(2021)
Article
Thermodynamics
Yi Li, Fang Yuan, Rengang Weng, Fang Xi, Wei Liu
Summary: The porosity distribution in the gas diffusion layer significantly impacts cell performance. An optimized three-dimensional nonuniform porosity distribution is proposed to increase current density and power density. Different design schemes are evaluated, with the optimized porosity distribution showing the best performance.
Article
Chemistry, Physical
A. Hamrang, M. Abdollahzadeh, A. Moradi Bilondi, F. Bagherighajari, S. M. Rahgoshay, J. C. Pascoa
Summary: This study compares the performance of a PEMFC with conventional parallel serpentine flow fields and parallel serpentine-baffled flow fields. The results show that the PSBFF design can significantly improve cell performance, especially at higher pressure, temperature, and stoichiometric ratio.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Thermodynamics
Zihao Liao, Lin Wei, Ahmed Mohmed Dafalla, Jian Guo, Fangming Jiang
Summary: The flow field configuration of a PEMFC is crucial for performance enhancement, and the study found that the contrary arrangement design provides more uniform distributions of reactants and reaction products compared to traditional designs. Additionally, the contrary arrangement design reduces mass transport resistance and boosts heat/mass transfer rates, especially under higher relative humidity and larger operating pressure conditions.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2021)
Article
Green & Sustainable Science & Technology
Mazaher Rahimi-Esbo, Ahmad Rezaei Sangtabi, Ebrahim Alizadeh
Summary: This study investigated the flow distribution in a 52-cell proton exchange membrane fuel cell stack using numerical simulations, finding that integrated humidifiers can significantly improve the uniformity of gas flow.
Article
Chemistry, Physical
Mingxin Liu, Wenxuan Fan, Guolong Lu
Summary: A three-dimensional numerical model is established to compare different types of locally improved structures in PEM fuel cells. The new variable diameter structure improves oxygen uniformity, while the block structure enhances local mass transfer. The presence of locally improved structures in the middle of the flow field achieves the best performance.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Thermodynamics
Armin Abdollahipour, Hoseyn Sayyaadi
Summary: This study investigated proton exchange membrane fuel cells (PEMFC) and proton exchange membrane electrolyzer cells (PEMEC) through numerical simulations, highlighting the importance of multi-objective optimization for power generation systems. The TOPSIS method was used to determine the optimal solution that balanced efficiency and cost.
Article
Chemistry, Physical
Mengshan Suo, Kai Sun, Rui Chen, Zhizhao Che, Zhen Zeng, Qifeng Li, Xingxiao Tao, Tianyou Wang
Summary: Metal foam flow fields have the potential to enhance oxygen mass transfer to the catalyst layer and improve oxygen distribution homogeneity in PEM fuel cells. Decreasing metal foam porosity may lead to nonmonotonic variation in oxygen mass transfer rate, while increasing pore density and compression ratio can enhance oxygen mass transfer, especially at high inlet velocities. The insights from this study could be valuable for the implementation of metal foam flow fields in PEM fuel cells.
JOURNAL OF POWER SOURCES
(2022)
Article
Energy & Fuels
Rui Lin, Ying Lu, Ji Xu, Jiawei Huo, Xin Cai
Summary: Examined the electrolyzer performance of three different flow field structures under different operating temperature and water pressure conditions. Found that flow field structure has the most considerable impact on the electrolyzer performance. Parallel flow field showed better mass transfer effect and lower contact impedance at medium and low current densities.
Article
Chemistry, Multidisciplinary
Soumya V. Nair, Malgorzata A. Witek, Joshua M. Jackson, Maria A. M. Lindell, Sally A. Hunsucker, Travis Sapp, E. Perry, Mateusz L. Hupert, Victoria Bae-Jump, Paola A. Gehrig, Weiya Z. Wysham, Paul M. Armistead, Peter Voorhees, Steven A. Soper
CHEMICAL COMMUNICATIONS
(2015)
Article
Chemistry, Analytical
Joshua M. Jackson, James B. Taylor, Malgorzata A. Witek, Sally A. Hunsucker, Jennifer P. Waugh, Yuri Fedoriw, Thomas C. Shea, Steven A. Soper, Paul M. Armistead
Article
Chemistry, Analytical
Colleen E. ONeil, Joshua M. Jackson, Sang-Hee Shim, Steven A. Soper
ANALYTICAL CHEMISTRY
(2016)
Review
Oncology
Camila D. M. Campos, Joshua M. Jackson, Malgorzata A. Witek, Steven A. Soper
Article
Chemistry, Analytical
Katrina N. Battle, Joshua M. Jackson, Malgorzata A. Witek, Mateusz L. Hupert, Sally A. Hunsucker, Paul M. Armistead, Steven A. Soper
Article
Biochemical Research Methods
Joshua M. Jackson, Malgorzata A. Witek, Mateusz L. Hupert, Charles Brady, Swathi Pullagurla, Joyce Kamande, Rachel D. Aufforth, Christopher J. Tignanelli, Robert J. Torphy, Jen Jen Yeh, Steven A. Soper
Article
Engineering, Electrical & Electronic
Mateusz L. Hupert, Joshua M. Jackson, Hong Wang, Malgorzata A. Witek, Joyce Kamande, Matthew I. Milowsky, Young E. Whang, Steven A. Soper
MICROSYSTEM TECHNOLOGIES-MICRO-AND NANOSYSTEMS-INFORMATION STORAGE AND PROCESSING SYSTEMS
(2014)
Article
Chemistry, Analytical
Wenting Hu, Steven A. Soper, J. Matt Jackson
ANALYTICAL CHEMISTRY
(2019)
Article
Biology
Harshani Wijerathne, Malgorzata A. Witek, Joshua M. Jackson, Virginia Brown, Mateusz L. Hupert, Kristina Herrera, Cameron Kramer, Abigail E. Davidow, Yan Li, Alison E. Baird, Michael C. Murphy, Steven A. Soper
COMMUNICATIONS BIOLOGY
(2020)
Article
Chemistry, Analytical
Zheng Zhao, Swarnagowri Vaidyanathan, Payel Bhanja, Sachindra Gamage, Subhrajit Saha, Collin McKinney, Junseo Choi, Sunggook Park, Thilanga Pahattuge, Harshani Wijerathne, Joshua M. Jackson, Mateusz L. Huppert, Malgorzata A. Witek, Steven A. Soper
Summary: We present an in-plane extended nanopore Coulter counter (XnCC) chip fabricated using imprinting in a thermoplastic material. The sensor was made using photolithography and focused ion beam milling to create the microfluidic network and in-plane pore sensor, respectively, in Si. UV resin stamps were then generated and used for thermal imprinting to produce the final device in the desired plastic material (cyclic olefin polymer, COP). As a demonstration, we used this in-plane extended nanopore sensor to count SARS-CoV-2 viral particles (VPs) affinity-selected from saliva and extracellular vesicles (EVs) affinity-selected from plasma samples obtained from mouse models exposed to different ionizing radiation doses.
Article
Chemistry, Analytical
Mengjia Hu, Virginia Brown, Joshua M. Jackson, Harshani Wijerathne, Harsh Pathak, Devin C. Koestler, Emily Nissen, Mateusz L. Hupert, Rolf Muller, Andrew K. Godwin, Malgorzata A. Witek, Steven A. Soper
Summary: Extracellular vesicles (EVs) have the potential to be used as a minimally invasive liquid biopsy marker for precision medicine, as they carry RNA cargo associated with the cell-of-origin. Researchers have developed an EV microfluidic affinity purification (EV-MAP) chip, made from plastic for high-scale production, which can isolate EV subpopulations. They demonstrated the utility of this chip in molecular subtyping breast cancer patients, isolating two subpopulations of EVs that better recapitulate the tumor microenvironment. The EV-MAP provided high recovery and specificity based on exosomal mRNA and PCR results, and the EV subpopulations showed potential for prognostication using the PAM50 test.
ANALYTICAL CHEMISTRY
(2023)
Article
Biochemical Research Methods
Camila D. M. Campos, Sachindra S. T. Gamage, Joshua M. Jackson, Malgorzata A. Witek, Daniel S. Park, Michael C. Murphy, Andrew K. Godwin, Steven A. Soper
Review
Chemistry, Multidisciplinary
Joshua M. Jackson, Malgorzata A. Witek, Joyce W. Kamande, Steven A. Soper
CHEMICAL SOCIETY REVIEWS
(2017)
Meeting Abstract
Hematology
Joshua M. Jackson, James Taylor, Malgorzata Witek, Sally A. Hunsucker, Jennifer Paulsen Waugh, Yuri D. Fedoriw, Thomas C. Shea, Steven A. Soper, Paul M. Armistead
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)