Article
Chemistry, Analytical
Irma Lucia Vera-Estrada, Juan Manuel Olivares-Ramirez, Juvenal Rodriguez-Resendiz, Andres Dector, Jorge Domingo Mendiola-Santibanez, Diana Maria Amaya-Cruz, Adrian Sosa-Dominguez, David Ortega-Diaz, Diana Dector, Victor Manuel Ovando-Medina, Iveth Dalila Antonio-Carmona
Summary: This study investigates the application of paper-based microfluidic fuel cells in pregnancy tests, demonstrating the possibility of using human urine as an electrolyte to power the battery. The experimental results show high voltage and current, providing stable power supply for pregnancy tests.
Article
Chemistry, Physical
Jing Wang, Yaming Ma
Summary: The sluggish kinetics of urea oxidation reaction (UOR) in direct urea fuel cells (DUFC) can be improved by utilizing copper and nickel-based composite oxides as catalysts. Through meticulous control of galvanic reaction and high-temperature oxidation, the nano-architectures of the catalysts are optimized to achieve low potential and high performance. Moreover, DUFCs assembled with bio-urine without further purification show similar voltage, indicating the possibility of converting bio-waste into valuable energy sources.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Energy & Fuels
Shaoxuan Zhong, Weijian Yuan, Xiaoqiang Liu, Jiamu Cao, Yufeng Zhang
Summary: This article presents an output power regulation system for micro fuel cells to enhance the stability in a portable micro power system. The structure of an MCU-controlled DC-DC converter is proposed and the output characteristics of a selected fuel cell stack, as well as the power control functions of the converter, are estimated using a system-level model. Based on simulation results, the model provides a power regulation system that effectively regulates the output power to a fixed level of 5 W-40 W with good efficiency.
FRONTIERS IN ENERGY RESEARCH
(2023)
Article
Chemistry, Physical
D. Dector, D. Ortega-Diaz, J. M. Olivares-Ramirez, A. Dector, J. J. Perez-Bueno, D. Fernandez, D. M. Amaya-Cruz, A. Reyes-Rojas
Summary: This study introduces the construction and evaluation of a photo-assisted microfluidic fuel cell that uses human urine as a fuel. By synthesizing TiO2-Ni nanoparticles as a photoanode, the oxidation efficiency of urea in urine was improved. The developed photo-mFC showed promising performance in terms of open-circuit potential, current density, and power density, suggesting its potential application in low-power portable medical devices.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Energy & Fuels
Yuanting Shen, Xiaohui Yan, Liang An, Shuiyun Shen, Lu An, Junliang Zhang
Summary: Proton exchange membrane fuel cell (PEMFC) is an ideal energy-conversion technology for various applications. This research proposes a PEMFC system using hydrogenable polyoxometalate (POM) solution as hydrogen carrier that works under atmospheric conditions, and the experiments demonstrate good cell performance and stability.
Article
Chemistry, Physical
Xiang Ao, Yu Gu, Chunjie Li, Ying Wu, Chunhua Wu, Shiyou Xun, Anton Nikiforov, Cailing Xu, Jinzhi Jia, Weiwei Cai, Ruguang Ma, Kaifu Huo, Chundong Wang
Summary: Urea electrolysis is an effective solution for energy and environment issues. The use of a hierarchical structure derived from metal-organic framework improves catalytic activity and durability, offering potential for cost-effective hydrogen production and urea fuel cells.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2022)
Article
Biochemistry & Molecular Biology
Md Hakimul Haque, Shamarendra Narayan, Md S. Islam, Mousumi Akter, Md M. Hasan, Rakibul Islam, Mohammad B. Rashid
Summary: Ovary dysfunction adversely affects fertility and economic profit in cows due to abnormal endocrine surge during reproductive cycles. This study developed a simple and portable on-farm technique for pregnancy diagnosis and ovary status determination in cows using urine chemical analysis. The accuracy of the developed technique was validated with rectal palpation, and the results showed promising potential for field-level diagnosis. Evaluation: 8/10.
BIOCHEMICAL AND BIOPHYSICAL RESEARCH COMMUNICATIONS
(2023)
Article
Environmental Sciences
Saranya Sriram, Indumathi M. Nambi, Raghuram Chetty
Summary: A novel sediment-water electrolytic fuel cell (SWEFC) for reducing Cr(VI) in a dual-phase system was fabricated and showed high reduction efficiency. The use of cow dung as an electron donor enhanced the performance. The SWEFC also demonstrated efficient performance in a large-scale reactor configuration.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Energy & Fuels
Lanka Tata Rao, U. S. Jayapiriya, Satish Kumar Dubey, Arshad Javed, Sanket Goel
Summary: This study introduces a novel methodology for developing a microscale fuel cell using hydrogen as the primary agent. By utilizing cellulose paper substrates and materials like aluminum foil and sodium hydroxide, a paper-based hydrogen fuel cell is fabricated on paper, optimizing hydrogen generation parameters to improve cell performance.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Energy & Fuels
Tobias Graf, Robin Fonk, Jonas Schroeter, Pia Hoenicke, Christiane Bauer, Josef Kallo, Caroline Willich
Summary: To reduce the impact of aviation on climate, new technologies such as fuel cell and battery hybrids are necessary. This study presents a test setup for direct hybrid electric power trains with an emulated fuel cell and battery. The behavior of the fuel cell and battery influences the voltage variation within the system.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Chemistry, Physical
A. Shirpay
Summary: Microbial fuel cells (MFC) use microorganisms to convert organic compounds into electricity. This study focused on using the yeast Saccharomyces cerevisiae in MFCs and investigated the effect of electrode size on power generation. Results showed that smaller electrodes in MFCs can lead to higher current density and power output levels.
Article
Chemistry, Analytical
Ziping Wu, Feng Cui, Haijun Li, Yinglu Chen, Feixia Ruan, Huanfen Lu, Xiaochun Xie, Chuanxu Cheng, Madi Sun, Zhenglan Ban, Xuan He, Dan Shao, Yunjiao Zhang, Fangman Chen
Summary: In this study, a portable and visual smartphone-based colorimetric platform was developed for the quantification of urine cfDNA in quick, low-cost, and instrument-free manners. The platform achieved high sensitivity through the amplification of the optical signal of enriched cfDNA using a photocatalysis strategy. It exhibited excellent linearity and could distinguish the difference between healthy and urological disease.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Physical
M. P. Gurrola, J. C. Cruz, F. I. Espinosa-Lagunes, A. Martinez-Lazaro, J. Ledesma-Garcia, L. G. Arriaga, R. A. Escalona-Villalpando
Summary: This study presents a promising method for power generation in direct urea microfluidic fuel cells (DU mu FC) by using urine/urea oxidation reaction through catalysts with a higher performance. The evaluation of urine samples as fuel in an air-breathing microfluidic fuel cell is carried out by optimizing parameters such as urea, KOH and H2SO4 concentration, and flux rate. The electrochemical results demonstrate the successful generation of energy from urine by dispersing and attaching the Pd/rGo catalyst mixed with Nafion (R) in the anodic compartment.
Article
Thermodynamics
Junjie Zhao, Zhengkai Tu, Siew Hwa Chan
Summary: This study introduces a portable mobile power supply using a self-breathing micro-proton exchange membrane fuel cells (mu PEMFCs) stack for portable charging. The stack is formed by a series array of single cells on a printed circuit board (PCB), and hydrogen is stored in the cavity enclosed by the rotating PCB boards. The study analyzes the impact of hydrogen pressure and ambient conditions on stack performance and investigates the discharging time under standard charging powers. The results indicate that the heat dissipation method of the self-breathing stack limits its current density and controlling current density within a specific range ensures proper stack temperature and performance.
ENERGY CONVERSION AND MANAGEMENT
(2023)
Article
Engineering, Electrical & Electronic
Sebastian Zimprich, Diego Davila-Portals, Sven Matthiesen, Thomas Gwosch
Summary: This paper investigates heating strategies for fuel cells in low-temperature environments and finds that appropriate operational strategies can ensure reliable and energy-efficient operation. The heating strategy should be adjusted according to environmental conditions to optimize efficiency and reliability.
Article
Biochemical Research Methods
Vicente Galvan, Kryls Domalaon, Catherine Tang, Samantha Sotez, Alex Mendez, Mehdi Jalali-Heravi, Krutarth Purohit, Linda Pham, John Haan, Frank A. Gomez
Article
Chemistry, Physical
Shuozhen Hu, Fabian Munoz, Jennifer Noborikawa, John Haan, Louis Scudiero, Su Ha
APPLIED CATALYSIS B-ENVIRONMENTAL
(2016)
Article
Energy & Fuels
Steven Saric, Brenna Biggs, Mika Janbahan, Ryan Hamilton, Huy K. Do, Salvador Mayoral, John L. Haan
Article
Electrochemistry
Omar Muneeb, Jose Estrada, Lyndon Tran, Kelly Nguyen, Jennifer Flores, Shuozhen Hu, Allyson M. Fry-Petit, Louis Scudiero, Su Ha, John L. Haan
ELECTROCHIMICA ACTA
(2016)
Article
Chemistry, Analytical
Bjoern Braunschweig, Prabuddha Mukherjee, John L. Haan, Dana D. Dlott
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2017)
Article
Chemistry, Physical
Omar Muneeb, Emily Do, Timothy Tran, Desiree Boyd, Michelle Huynh, Gregory Ghosn, John L. Haan
JOURNAL OF POWER SOURCES
(2017)
Article
Chemistry, Multidisciplinary
Omar Muneeb, Jose Estrada, Timothy Tran, Shuozhen Hu, Bita Khorasani, Allyson Fry-Petit, Louis Scudiero, Su Ha, John L. Haan
Article
Energy & Fuels
Omar Muneeb, Emily Do, Desiree Boyd, Josh Perez, John L. Haan
Article
Chemistry, Physical
Omar Muneeb, Isabel Chino, Albert Saenz, John L. Haan
JOURNAL OF POWER SOURCES
(2019)
Article
Energy & Fuels
Isabel Chino, Kimberly Hendrix, Abtin Keramati, Omar Muneeb, John L. Haan
Article
Energy & Fuels
Isabel Chino, Lorenzo Vega, Abtin Keramati, Kimberly Hendrix, John L. Haan
Article
Energy & Fuels
Abtin Keramati, Kimberly Hendrix, Diana Nguyen, Fred Gonzales, Kimberly Waters, Allyson Fry-Petit, John L. Haan
Summary: This study successfully fabricated two ascorbate fuel cells without the need for precious metal catalysts, achieving impressive power density and open circuit voltage. These fuel cells demonstrate comparable performance to previous ones utilizing precious metal catalysts, providing the opportunity to lower the cost of fuel cell electrodes.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2021)
Article
Chemistry, Physical
Kimberly Waters, Diana Nguyen, Lauren Hernandez, Kelly Vu, Allyson Fry-Petit, Stevan Pecic, John L. Haan
Summary: This work demonstrates the first alkaline direct liquid fuel cell powered by butanediol (BD) and examines the performance and product formation differences among the four linear isomers of BD. The research shows that the 1,4-BD isomer has the highest maximum power density and potential for strong power output. Additionally, the analysis reveals the impact of the relative position of the alcohol groups on the adsorption of the molecule and the performance of the fuel cell.
JOURNAL OF POWER SOURCES
(2022)
Article
Biochemical Research Methods
Kryls Domalaon, Catherine Tang, Alex Mendez, Franky Bernal, Krutarth Purohit, Linda Pham, John Haan, Frank A. Gomez
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)