Article
Engineering, Environmental
Lukka Thuyavan Yogarathinam, Juhana Jaafar, Ahmad Fauzi Ismail, Pei Sean Goh, Arthanareeswaran Gangasalam, Mohamad Fahrul Radzi Hanifah, Kar Chun Wong, Mahesan Naidu Subramaniam, Jerome Peter
Summary: Nanostructured materials, such as polyaniline coated activated boron nitride, have been embedded in sulfonated poly (ether ether ketone) membranes to enhance proton conductivity and reduce methanol permeability in direct methanol fuel cell applications. The addition of functionalized boron nitride improves water uptake, ion exchange capacity, and chemical stability of the membranes, while significantly reducing methanol permeability. These nanocomposite membranes exhibit improved performance compared to commercial Nafion membranes, with higher open circuit voltage and power density.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Chemistry, Physical
Di Liu, Bo Dong, Haibo Zhang, Yunji Xie, Jinhui Pang, Zhenhua Jiang
Summary: Semi-crystalline PEK-SPx membranes, consisting of a crystalline poly(ether ketone) main chain and densely sulfonated side chain, exhibit excellent dimensional stability and methanol resistance. PEK-SP20 membrane shows stable performance in pure methanol, making it suitable for direct methanol fuel cells.
JOURNAL OF POWER SOURCES
(2021)
Article
Chemistry, Physical
Nagaraju Niluroutu, Avanish Shukla, Vishal M. Dhavale, Sreekuttan M. Unni, Santoshkumar D. Bhat
Summary: The composite membrane of sPEEK and PSSA-f-MCM-41 shows improved physio-chemical properties, reduced methanol permeability, and higher electrochemical selectivity, resulting in better DMFC performance.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Polymer Science
Lukka Thuyavan Yogarathinam, Juhana Jaafar, Ahmad Fauzi Ismail, Pei Sean Goh, Mohd Hilmi Bin Mohamed, Mohamad Fahrul Radzi Hanifah, Arthanareeswaran Gangasalam, Jerome Peter
Summary: Graphene oxide and conductive polyaniline coated graphene oxide were used as additives in sulfonated poly(ether ether ketone) nanocomposite membrane to reduce methanol crossover in direct methanol fuel cells. The modified membrane exhibited increased water uptake, ion exchange capacity, and proton conductivity, as well as improved oxidative stability and selectivity for DMFC applications.
POLYMERS FOR ADVANCED TECHNOLOGIES
(2022)
Article
Chemistry, Physical
Alphonse Haragirimana, Na Li, Zhaoxia Hu, Shouwen Chen
Summary: This study investigates the effect of thermal crosslinking on SPEEK/SPAES membranes, showing that the thermally-crosslinked membranes exhibit excellent physicochemical and electrochemical performance, indicating potential applications in fuel cells.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Polymer Science
Kosar Arab, Mahdi Tohidian, Amirsaeed Shamsabadi
Summary: In this study, nanocomposite polyelectrolyte membranes based on sulfonated polystyrene (SPS) and imidazole-2-acetic acid (Im) blend (SPSIm), incorporated with halloysite nanotubes (HNTs), were investigated for direct methanol fuel cell (DMFC) applications. The optimal degree of sulfonation for PS was selected based on hydrolytic stability, and SPS was blended with Im to improve proton conductivity and decrease methanol permeability. The addition of HNTs further reduced methanol crossover by introducing tortuous diffusion pathways. The resulting SPSIm/HNT membrane showed significantly decreased methanol permeability and improved membrane selectivity parameter, making it a potential candidate for DMFC applications.
JOURNAL OF APPLIED POLYMER SCIENCE
(2023)
Article
Chemistry, Physical
Jinyang Li, Wenjie Wang, Zhongqing Jiang, Binglu Deng, Zhong-jie Jiang
Summary: This work reports on the co-filling of sulfonated zeolitic imidazolate framework-derived porous carbon and sulfonated silica to improve the performance of the sulfonated poly(ether ether ketone) membrane. The co-filled structure enhances proton conductivity, lowers methanol permeability, improves mechanical and oxidation stabilities, and shows potential as a proton exchange membrane for direct methanol fuel cells.
JOURNAL OF POWER SOURCES
(2022)
Article
Energy & Fuels
Lukka Thuyavan Yogarathinam, Juhana Jaafar, Ahmad Fauzi Ismail, Hazlina Junoh, Alireza Samavati, Pei Sean Goh, Arthanareeswaran Gangasalam, Jerome Peter
Summary: This study incorporated conductive polyaniline deposited oxidized graphitic carbon nitride into sulfonated poly (ether ether ketone) membrane for direct methanol fuel cell applications. The functionalized membrane showed improved water uptake capacity, ion exchange capacity, lower methanol permeability, higher proton conductivity, and higher oxidative stability. These results demonstrate the potential of the modified membrane as a superior nanofiller for PEM modification in DMFC applications.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2021)
Article
Polymer Science
Seyed Hesam-Aldin Samaei, Gholamreza Bakeri, Mohammad Soleimani Lashkenari
Summary: This study focused on developing low-cost proton exchange membranes (PEMs) based on sulfonated poly ether ether ketone (SPEEK) for microbial fuel cell (MFC) applications. By incorporating sulfonated polystyrene (SPS) and phosphotungstic acid (PWA), the performance of the PEMs was significantly enhanced, leading to improved proton conductivity and durability, resulting in higher power output in MFCs compared to commercial Nafion117 membranes.
JOURNAL OF APPLIED POLYMER SCIENCE
(2021)
Review
Chemistry, Physical
Minghan Xu, Hao Xue, Qingfu Wang, Lichao Jia
Summary: Proton exchange membrane fuel cells (PEMFCs) are potential clean energy sources attracting attention, with a focus on developing high-performance, low-cost PEMs to replace benchmark Nafion membranes. Sulfonated poly(arylene ether ketone)s (SPAEKs) and sulfonated poly(arylene ether sulfone)s (SPAESs) are promising candidates due to their performance and cost advantages. Efforts are classified and introduced in developing SPAEK and SPAES membranes for promising research directions in the field.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Physical
Zhuoyu Yin, Haobo Geng, Pengfei Yang, Benbing Shi, Chunyang Fan, Quan Peng, Hong Wu, Zhongyi Jiang
Summary: A sulfonated covalent organic framework nanosheets (TpPa-SO3H) were synthesized and incorporated into SPEEK matrix to prepare proton exchange membranes with increased ion exchange capacity and reduced swelling ratio. The SPEEK/TpPa-SO3H-5 membrane exhibited significantly improved proton conductivity and mechanical strength, leading to favorable performance in a single H-2/O-2 fuel cell.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Polymer Science
Chengyun Yuan, Yinghan Wang
Summary: The composite membranes prepared by doping TiO(2) into SPAEKS matrix exhibit improved proton selectivity while maintaining high proton conductivity, and reduced methanol permeability compared to Nafion 117 membrane.
HIGH PERFORMANCE POLYMERS
(2021)
Article
Electrochemistry
Amirsalar Bagherzadeh, Mahdi Tohidian, Yeganeh Mollamohammadi Sadafi, Amirsaeed Shamsabadi, Hesam Makki
Summary: Polyelectrolyte membranes (PEMs) containing chitosan and Nafion were prepared for DMFC application. The addition of Nafion increased the Tg and decreased the crystallinity of the chitosan matrix due to the interaction between -SO3H groups in Nafion and -NH2 groups in chitosan. The PEMs with higher Nafion loading weight exhibited higher proton conductivity and methanol permeability, and the membrane with 25 wt% Nafion showed comparable selectivity parameter to neat Nafion. A maximum power density of 39 mW cm(-2) was achieved for this membrane in DMFC performance test.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2023)
Article
Engineering, Environmental
Pradip Das, Bishnupada Mandal, Sasidhar Gumma
Summary: This study involves the synthesis of amino acid grafted nanocomposites as proton exchange membranes for direct methanol fuel cells and assessing their selectivity. The results show significant improvement in blocking methanol and enhanced conductivity of the composite membrane after modification.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Polymer Science
Chengyun Yuan, Qun Li, Yunfa Dong, Jiayu Wang, Weidong He, Cenqi Yan, Yinghan Wang, Pei Cheng
Summary: This study reported the preparation and characterization of azide-substituted polysulfone (PSU-N3) and alkynyl-substituted sulfonated polyvinyl alcohol (SAPVA) crosslinked in the matrix of Nafion membrane base on click chemistry applied in DMFC. The prepared blend membranes exhibit lower methanol permeability and higher proton selectivity compared to the recast Nafion membrane. In DMFC single cell tests, the maximum power density of the prepared blend membrane is significantly higher than that of the recast Nafion membrane, showing its potential for practical application.
JOURNAL OF POLYMER SCIENCE
(2023)
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)