Article
Chemistry, Physical
Wu Yujing, Zhou Hongxiu, Zhang Ao, Zhao Leqing
Summary: The research shows that flowing electrode direct methanol fuel cell (FEDMFC) effectively reduces methanol crossover rate while maintaining high power densities. Increasing flow rate can decrease crossover rate but will affect efficiency and stability, with optimal flow rate controlled at 1-3 sccm.
JOURNAL OF POWER SOURCES
(2022)
Article
Chemistry, Physical
Yun Liu, Zhefei Pan, Oladapo Christopher Esan, Xiaoyu Huo, Xingyi Shi, Liang An
Summary: In this work, a new passive ammonia fuel cell prototype is designed and tested. The developed ammonia fuel cell features a passive supply of ammonia to the anode and an open cathode design. The performance and behavior of the fuel cell are investigated under different operating conditions, as well as the influence of structural parameters on mass transport and performance.
JOURNAL OF POWER SOURCES
(2023)
Article
Chemistry, Physical
Bincy George Abraham, Raghuram Chetty
Summary: An air breathing direct methanol fuel cell (AB-DMFC) with a unique architecture was designed and optimized for high performance, utilizing titanium mesh as a catalyst support and optimizing the configuration of the anode and cathode. The study also extended the single cell AB-DMFC architecture to 2-cell and 6-cell mini-stacks, which were used to power a small portable device.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Physical
Nianfang Wan
Summary: This paper proposes accelerated stress test protocols for direct methanol fuel cell (DMFC) to simulate real-life operation conditions and shorten evaluation time. The cell exhibits long survival time and stable membrane/electrode interface, but degradation of gas diffusion layer (GDL) and catalysts are found to cause performance degradation.
JOURNAL OF POWER SOURCES
(2023)
Article
Energy & Fuels
Nur S. A. Hamid, S. K. Kamarudin, Nabila A. Karim
Summary: By using waste material eggshell powder to produce a composite membrane, the problems in direct methanol fuel cells can be addressed, with the performance of the composite membrane comparable to that of commercial Nafion 117 membrane. The results demonstrate the potential of eggshell powder as a filler in a Nafion matrix for applications in DMFC.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2021)
Article
Energy & Fuels
Hazlina Junoh, Juhana Jaafar, Nik Abdul Hadi M. Nordin, Ahmad F. Ismail, Mohd H. D. Othman, Mukhlis A. Rahman, Farhana Aziz, Norhaniza Yusof, Syarifah Noor S. Sayed Daud
Summary: Porous poly ether sulfone (PES) membranes were prepared using two different solvents via dry/wet non-solvent phase inversion techniques, with membranes prepared using DMAc at 3 minutes solvent evaporation time showing desirable properties for proton conduction and methanol resistance.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2021)
Review
Materials Science, Multidisciplinary
Qian Zhu, Jingping Hu, Bingchuan Liu, Shaogang Hu, Sha Liang, Keke Xiao, Jiakuan Yang, Huijie Hou
Summary: Microbial fuel cells have received significant attention as a sustainable technology for addressing environmental pollution and energy shortage. Recent advancements in functional materials for MFC systems include the development of enhanced anode materials, cost-effective separators/membranes, and efficient cathode catalysts to improve overall performance and efficiency. Challenges and future prospects for functional materials in MFC applications are also discussed in this review.
ENERGY & ENVIRONMENTAL MATERIALS
(2022)
Article
Energy & Fuels
Kaiyuan Zuo, Zhenyu Yuan
Summary: This article presents a high concentration adaptive direct methanol fuel cell based on a dual-cavity structure, and investigates its performance under different supply concentrations of methanol solution to determine optimal working conditions. The advantages of the anode double-cavity structure in high concentration and high energy density fuel supply are demonstrated, along with the effects of various materials on cell performance through experimental investigation.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2021)
Article
Energy & Fuels
M. S. Alias, S. K. Kamarudin, A. M. Zainoodin, M. S. Masdar
Summary: This study presents a surface characterization of the modified MPL of TiO2-CNF-CB and discusses in detail the mechanism on the power density drop due to increment of methanol concentration. The study also tests the performance and stability of the modified MPL. The results show that the mixture of TiO2-CNF-CB improved the stability of the DMFC over long-term performance testing.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2021)
Article
Chemistry, Physical
Yuan Fang, Tingting Zhang, Yuhang Zhang, Jianfeng Zhu
Summary: This study synthesized CeO2-QDs@MnO2 and MnO2@CeO2-QDs composites to investigate the role of CeO2 in ORR. CeO2-QDs@MnO2 showed superior ORR activity and stability, with a mechanism of temporary storage and timely replenishment of oxygen in CeO2 catalyzing greater efficiency.
APPLIED CATALYSIS A-GENERAL
(2021)
Review
Polymer Science
Gowthami Palanisamy, Tae Hwan Oh, Sadhasivam Thangarasu
Summary: A direct methanol fuel cell (DMFC) is an excellent energy device that converts methanol to energy with high efficiency. Commercial membranes for DMFCs are expensive and have high methanol permeability, but novel developments using cost-effective cellulose-based materials have improved performance. In this review, the advances and utilization of different cellulose materials as proton-exchange membranes (PEMs) for DMFCs are discussed, including cellulose derivatives and composites with inorganic additives.
Review
Energy & Fuels
Fei Chen, Yaxin Sun, Huiyu Li, Congju Li
Summary: This paper reviews the impact of different carriers on the performance of DMFC and introduces the development of self-supporting carriers for flexible DMFC electronics. It provides new ideas for the commercialization of DMFC.
Article
Green & Sustainable Science & Technology
Mahmut Bayramoglu, Emine Sena Kazan, Zeynep Cigeroglu, Yasser Vasseghian
Summary: The direct methanol fuel cell (DMFC) system is an important clean and sustainable energy generation system. However, the efficiency of the system is lower than expected due to the incomplete reaction of methanol electrooxidation. This study focused on evaluating critical parameters and investigating the properties of reaction intermediates under operating conditions.
SUSTAINABLE ENERGY TECHNOLOGIES AND ASSESSMENTS
(2022)
Article
Chemistry, Physical
Aiswarya K. Sidharthan, Shiny Joseph
Summary: A sustainable approach for synthesizing a sodium ion conducting cation exchange membrane was investigated in this study, addressing the issues of methanol permeability, ionic conductivity, and cost of the direct methanol fuel cell (DMFC). The use of polyvinyl alcohol (PVA) and sulfonated polyvinyl alcohol (SPVA)-montmorillonite clay (MMT) membranes in an alkaline medium improved the ionic conductivity and achieved a high peak power density in passive alkaline DMFC experiments.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Physical
Luwen Wang, Lu Yin, Wenli Yang, Yuhua Cheng, Fei Wen, Chaoran Liu, Linxi Dong, Minghao Wang, Shaopeng Ma, Xue Feng
Summary: In this study, various variables affecting the performance of passive micro direct methanol fuel cell were systematically investigated through experiments and simulations. The results showed that vertical stripe pattern (VSP) was preferred for both anodes and cathodes. Additionally, external environmental conditions such as vibration frequency, cell orientation, environmental temperature, and atmospheric pressure were thoroughly discussed. Optimized fabrication, assembly, and operation parameters were proposed to facilitate the wide application of high-performance and durable passive mu DMFC for portable applications.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
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)