Article
Chemistry, Physical
Thuc Vu Dong, Vo Dinh Cong Tinh, Dukjoon Kim
Summary: Ether-free sulfonated poly(fluorene biphenyl indole)s (SPFBI) membranes with high chemical stability and high proton conductivity were synthesized. These membranes showed comparable performance to commercial Pemion membranes and demonstrated excellent cell performance and stability.
JOURNAL OF POWER SOURCES
(2023)
Review
Energy & Fuels
Nur Ain Masleeza Harun, Norazuwana Shaari, Nik Farah Hanis Nik Zaiman
Summary: SPEEK is recognized as a promising alternative PEM in fuel cell applications due to its advantageous properties, but its proton conductivity is influenced by the degree of sulfonation. While high DS of SPEEK can produce high proton conductivity, excessive production of DS may have side effects on membrane stability. Therefore, finding the optimal DS of SPEEK is crucial for fabricating PEM alternatives.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2021)
Article
Engineering, Chemical
Mamta Kumari, John C. Douglin, Dario R. Dekel
Summary: A series of mechanically robust and highly conducting crosslinked anion-exchange membranes were synthesized using quaternary phosphonium-functionalized poly(ether ether ketone) (QPPEEK) as the base polymer and poly(ethylene glycol) (PEG) as the crosslinker. Among different compositions, the QPPEEK-PEG 20 membrane showed the best properties with high hydroxide conductivity, good mechanical strength, and flexibility. This crosslinked membrane was chemically stable in alkaline environment and performed well in anion-exchange membrane fuel cell applications, indicating the potential of PEEK-based membranes for such applications.
JOURNAL OF MEMBRANE SCIENCE
(2021)
Article
Energy & Fuels
Syarifah N. S. S. Daud, Muhammad N. A. M. Norddin, Juhana Jaafar, Rubita Sudirman
Summary: Hot-pressing was used to integrate PEM and AEM into BPM, with sPEEK/PES and cQAPEEK as the electrolytes. The central composite design of response surface methodology was employed to analyze the effect of hot-press conditions on membrane adhesion and properties. The optimized temperature and gauge pressure were found to be 120 degrees C and 3 tonnes/square inch, resulting in a high power density for the sPEEK/PES-cQAPEEK BPM.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2021)
Article
Chemistry, Physical
Mohd Hilmi Mohamed, Hamid Ilbeygi, Juhana Jaafar, Madzlan Aziz, M. H. D. Othman, Mukhlis A. Rahman
Summary: This study successfully developed a high-performance proton exchange membrane using hybrid mesoporous siliceous phosphotungstic acid (mPTA-Si) and sulfonated poly ether ether ketone (SPEEK). The incorporation of mPTA-Si improved the water uptake and proton conductivity of the membrane, resulting in a significant increase in power density.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Physical
Xingtong Pu, Yuting Duan, Jialin Li, Chunyu Ru, Chengji Zhao
Summary: Sulfonated hydrocarbon polymers have been studied as proton exchange membranes in fuel cells, with SPAEK-TM demonstrating superior performance and durability as an ionomer in catalyst layers. The SPAEK-TM-based membrane electrode assembly exhibits excellent morphology and active electrochemical surface area, with superior power density and lower degradation compared to Nafion-MEA. Incorporating SPAEK-TM ionomer effectively inhibits methanol permeability in direct methanol fuel cells.
JOURNAL OF POWER SOURCES
(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
Engineering, Chemical
Ting Wang, Yaping Jin, Tong Mu, Tingting Wang, Jingshuai Yang
Summary: In this study, a DMBP-TB/PEKC/PA blend membrane with high conductivity and mechanical strength was successfully prepared by synthesizing TB polymer and doping with engineering thermoplastic PEKC. This provides a potential solution for the application of high temperature proton exchange membrane fuel cells.
JOURNAL OF MEMBRANE SCIENCE
(2022)
Article
Environmental Sciences
D. Vidhyeswari, A. Surendhar, S. Bhuvaneshwari
Summary: By incorporating CNTs into the SPEEK membrane, the composite membrane shows improved properties, including water uptake capacity and ion exchange capacity. The power density of the composite membrane is 2 times higher than that of the pristine membrane. The composite membrane with 0.75% CNT-SPEEK exhibits the highest power density.
Article
Polymer Science
Maryam Oroujzadeh, Shahram Mehdipour-Ataei
Summary: Two series of sulfonated poly(ether sulfone ketone)s were synthesized, and the effect of different ratios of sulfone: ketone functional groups on membrane properties was studied. Membranes with higher sulfone content exhibited lower density, higher water absorption, and swelling ratio values.
POLYMERS FOR ADVANCED TECHNOLOGIES
(2022)
Article
Engineering, Chemical
Ji Eun Park, Junghwan Kim, Jusung Han, Kihyun Kim, SungBin Park, Sungjun Kim, Hyun S. Park, Yong-Hun Cho, Jong-Chan Lee, Yung-Eun Sung
Summary: The sulfonated poly(arylene ether sulfone) with a 50 mol.% degree of sulfonation, SPAES50, has been successfully synthesized for use in hydrocarbon-based membrane and ionomer applications in proton-exchange membrane water electrolysis (PEMWE). The SPAES50 membrane and the SPAES50-based ionomer (P50) were found to exhibit excellent physical and electrochemical properties, leading to higher performance in PEMWE compared to the commercial Nafion (TM) membrane and ionomer. This study demonstrates the great potential of SPAES50 as a hydrocarbon-based membrane and ionomer for PEMWE applications.
JOURNAL OF MEMBRANE SCIENCE
(2021)
Article
Chemistry, Applied
Seung-Young Choi, Kyeong Sik Jin
Summary: Prolonged hydrothermal treatment of sulfonated poly(ether ether ketone) membranes induces mechanical degradation and hydrophilic-hydrophobic phase separation, affecting proton conductivity and device stability. Aging processes through hydration-dehydration cycling and prolonged hydrothermal treatment lead to different changes in nanostructure and properties of the membranes. Fuel cell performance shows significant differences between the two aged membranes, with hydration-dehydration cycling leading to better durability.
JOURNAL OF ENERGY CHEMISTRY
(2022)
Article
Chemistry, Physical
Guangbo Zeng, Liuming Yan, Baohua Yue, Hongbin Zhao, Jiujun Zhang
Summary: The translation describes the synthesis method and characteristics of a novel proton exchange membrane, which has high proton conductivity, moderate water uptake, and high ion exchange capacity, attributed to the features of flexible spacers and sidechains.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Green & Sustainable Science & Technology
Khadijeh Hooshyari, Samira Heydari, Hossein Beydaghi, Hamid Reza Rajabi
Summary: This study aims to improve the proton conductivity and fuel cell performance of polymer-based membranes by using specific nanoparticles. The produced membranes exhibit remarkable electrochemical and mechanical performances, achieving high proton conductivity and power density over a wide temperature range and demonstrating long lifetime. These nanocomposite membranes show potential application in fuel cells.
Article
Materials Science, Multidisciplinary
Rajender Singh Malik, Udit Soni, Sampat Singh Chauhan, Devendra Kumar, Veena Choudhary
Summary: Proton conducting membranes of PVA-FNCs/SPEEK were synthesized by solution casting, exhibiting good proton conductivity and enhanced fuel cell performance. The addition of SPEEK and the crosslinking of PVA-FNCs were found to be key factors affecting the properties of the membranes. The semi-interpenetrating network membranes showed promising potential for applications in fuel cell technology.
MATERIALS TODAY COMMUNICATIONS
(2021)
Article
Engineering, Chemical
Xiya Yuan, Huiya Yu, Shan Xu, Guolong Huo, Chris J. J. Cornelius, Yanfang Fan, Nanwen Li
Summary: The combination of functionalized metal organic frameworks with a polymer with structural similarity is a feasible route to enhance binary phase adhesion of hybrid membranes. The incorporation of amine-modified ZIF-8 with a permeable imidazole-containing copolyimide produces compatible mixed matrix membranes (MMMs) with optimized gas separation performance. The hydrogen bonding created between amine groups and the polymer matrix significantly improves interfacial adhesion and leads to increased membrane permeability, thermal stability, and gas selectivity, especially under sub-ambient temperatures for CO2/CH4 and H-2/CH4 separations.
JOURNAL OF MEMBRANE SCIENCE
(2022)
Article
Engineering, Environmental
Haifei Jiang, Yu Chen, Shuqing Song, Zheyuan Guo, Zhengqing Zhang, Chenyang Zheng, Guangwei He, Hongjian Wang, Hong Wu, Tong Huang, Yanxiong Ren, Xin Liu, Junfeng Zhang, Yan Yin, Zhongyi Jiang, Michael D. Guiver
Summary: This article explores the application of covalent organic framework (COF)-based composite membranes (CMs) in propylene/propane separation. The study reveals that the design of confined facilitated transport nanochannels within COFs can address the issue of oversized pores and achieve high selectivity separation. Experimental results demonstrate that SCOF-Ag/PI CMs exhibit high propylene permeability, good propylene/propane selectivity, and long durability.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Physical
Yan Yin, Mengyuan Li, Xin Liu, Na Xie, Chenyang Zheng, Guokun Liu, Shuoyao Yin, Xintian Li, Yabiao Pei, Junfeng Zhang, Yanzhou Qin, Michael D. Guiver
Summary: In this study, a method to improve the proton conductivity of proton exchange membranes (PEMs) by adding CuFe-PBA is proposed. Unlike previous strategies, this method focuses on the mode of proton transport rather than simply increasing water uptake or enlarging hydrophilic domains. The experimental results show that SPSf/CuFe-PBA composite PEMs exhibit better performance than unfilled PEMs, especially under low humidity conditions, and are competitive with Nafion 212. Furthermore, scale-up trials and cost estimation indicate the economic and practical potential of CuFe-PBA and composite PEMs.
JOURNAL OF POWER SOURCES
(2022)
Article
Chemistry, Multidisciplinary
Weikang Zhu, Haotian Liu, Runfei Yue, Yabiao Pei, Junfeng Zhang, Xin Liu, Ran Li, Yan Yin, Michael D. Guiver
Summary: This study presents a highly efficient method for the preparation of catalyst layers (CLs) via fast current-driven synthesis and pyrolysis. The method allows for the direct deposition of ZIF precursors onto conductive substrates in a short time, and the conversion of ZIF membranes into self-supporting CLs through single-step pyrolysis. The resulting CLs exhibit a bi-continuous framework and Co-based active sites, leading to a small potential gap, high performance, and excellent stability.
Article
Polymer Science
Wenjian Zheng, Chung-Hao Liu, Mu-Ping Nieh, Chris J. Cornelius
Summary: The morphology and transport properties of PBC with different ion-exchange capacities were studied using TEM and SAXS. PBC[C/H] showed a random morphology, while PBC[THF] formed an orientation-dependent lamellar morphology.
Article
Chemistry, Multidisciplinary
Tong Huang, Haifei Jiang, John C. C. Douglin, Yu Chen, Shuoyao Yin, Junfeng Zhang, Xiaojuan Deng, Hong Wu, Yan Yin, Dario R. R. Dekel, Michael D. D. Guiver, Zhongyi Jiang
Summary: This study reports the synthesis of charged COF-NSs in open space using a single-phase organic solution system, achieving high volume yields. Charge-induced electrostatic repulsion forces enable the growth of large and crystalline COF-NSs from initial discrete and disordered polymers. The charged COF-NS colloidal suspensions can be cast into thin and compact proton exchange membranes with excellent proton conductivity and fuel cell performance.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Multidisciplinary
Yuhan Wang, Haifei Jiang, Zheyuan Guo, Hanze Ma, Shaoyu Wang, Hongjian Wang, Shuqing Song, Junfeng Zhang, Yan Yin, Hong Wu, Zhongyi Jiang, Michael D. Guiver
Summary: This article discusses the progress in advanced organic microporous membranes for carbon emission reduction and capture, focusing on confined mass transport mechanisms, design principles, and CO2 separation applications. The authors analyze the abnormal confinement effect in organic microporous membrane channels and propose design principles such as nano-assembly engineering, reticular engineering, and microenvironment engineering. They also summarize four categories of organic microporous membrane materials, namely polymers of intrinsic microporosity, graphene oxide, metal-organic framework, and covalent organic framework. Lastly, the article provides a perspective on the opportunities and challenges for the transition from advanced membranes to real-world applications.
ENERGY & ENVIRONMENTAL SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
De Ao, Zibo Yang, Zhihua Qiao, Yuxiu Sun, Zhengqing Zhang, Michael D. Guiver, Chongli Zhong
Summary: A self-supported MOF crystal-glass composite (CGC) membrane was prepared by melt quenching ZIF-62 and ZIF-8 mixture. The membrane exhibited improved gas permeance and selectivity due to its unique structure. The thickness of the membrane can be adjusted without the need of a support substrate.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Engineering, Environmental
Weisheng Yu, Chengpeng Wei, Kaiyu Zhang, Jianjun Zhang, Zijuan Ge, Xian Liang, Michael D. Guiver, Xiaolin Ge, Liang Wu, Tongwen Xu
Summary: In this study, a 4-sulfocalix[4]arene (4-SCA)-modified graphene oxide (GO) membrane was successfully fabricated, which exhibited high ion permeability and selectivity, as well as pH-responsiveness. The membrane preferentially transported potassium ions over radionuclide cations and showed an order of magnitude higher ion selectivity than the unmodified GO membrane. The improved selectivity resulted from the specific recognition between 4-SCA and radionuclide cations, which was responsive to the protonation/deprotonation transformation of 4-SCA. This biomimetic permselective GO membrane has potential applications in efficient nuclear wastewater treatment and contributes to a deeper understanding of biomimetic ion transport mechanisms.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Chemistry, Physical
Yabiao Pei, Weikang Zhu, Runfei Yue, Jie Yao, Xin Liu, Lianqin Wang, Junfeng Zhang, Yan Yin, Michael D. Guiver
Summary: Adjusting the catalyst/ionomer agglomerate is crucial for high-performance catalyst layers, especially for non-precious metal catalysts. The solvent, as a sacrificial component, plays a vital role in determining the microstructure and performance of anion exchange membrane fuel cells (AEMFCs) during the formation process of the catalyst layer. By studying solvent mixtures of isopropanol (IPA) and tetrahydrofuran (THF), a control-lable construction of Co/Fe-N-C catalyst layers was achieved. The results show that the ratio of IPA and THF strongly affects the aggregate state and microstructure of the ionomers and catalysts, and the Co/Fe-N-C catalyst layer prepared with IPA:THF = 1:2 (v/v) exhibits a high performance AEMFC with a peak power density of 545.3 mW cm-2 at 80 degrees C.
JOURNAL OF POWER SOURCES
(2023)
Article
Chemistry, Physical
Zibo Yang, Youssef Belmabkhout, Lauren N. McHugh, De Ao, Yuxiu Sun, Shichun Li, Zhihua Qiao, Thomas D. Bennett, Michael D. Guiver, Chongli Zhong
Summary: A new amorphous glass foam material called a(gf)ZIF-62 was developed for gas separation, which exhibits ultrahigh permeance and good selectivity. This material has the potential to greatly reduce the cost of difficult industrial gas separations, such as CH4/N-2 separation.
Article
Chemistry, Multidisciplinary
Weikang Zhu, Yabiao Pei, Haotian Liu, Runfei Yue, Shilin Ling, Junfeng Zhang, Xin Liu, Yan Yin, Michael D. Guiver
Summary: A Co-based zeolitic imidazolate framework (ZIF-67) derived catalyst with ultrafine CoPt nanoalloy particles was designed to achieve a robust oxygen reduction reaction (ORR) performance for proton exchange membrane fuel cell (PEMFC). The core-shell structure of ZIF-67 and SiO2 was adjusted to inhibit the agglomeration of Co nanoparticles. The in situ formed graphene shell on the surface of Co nanoparticles further protected metal particles from coalescence, leading to the ultrafine CoPt nanoalloy. This work provides a viable strategy for designing Pt-based nanoalloy catalysts with ultrafine metal particles and high stability.
Article
Chemistry, Multidisciplinary
Caijiao Yu, Xixi Cen, Zhengqing Zhang, Yuxiu Sun, Wenjuan Xue, Zhihua Qiao, Michael D. Guiver, Chongli Zhong
Summary: In this study, a new strategy of step-nucleation in situ self-repair was proposed to prepare large-area ultrathin and rollable MOF membranes on a flexible polymer membrane support. This strategy enables the practical implementation of large-area MOF membranes and has potential applications in gas separation.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Weikang Zhu, Haotian Liu, Yabiao Pei, Tao Liu, Junfeng Zhang, Xin Liu, Lianqin Wang, Yingjie Feng, Yan Yin, Michael D. Guiver
Summary: A defective zeolitic imidazolate framework (ZIF) derived Co/Fe-N-C catalyst with small mesopores and high density of CoFe atomic active sites was prepared by regulating the Fe dosage and pyrolysis temperature. Molecular dynamics simulation and electrochemical tests showed that >2 nm mesopores had no significant influence on the diffusion process of O-2 and H2O molecules, resulting in high utilization of active sites and low mass transport resistance. The proton exchange membrane fuel cell (PEMFC) exhibited a high-power density of 755 mW cm(-2) with only 1.5 mg cm(-2) of non-Pt catalyst in the cathode, and no apparent performance loss was observed even at high current densities.
Article
Chemistry, Physical
Chenyang Zheng, Di Xiao, Junfeng Zhang, Yabiao Pei, Lianqin Wang, Xin Liu, Yan Yin, Michael D. Guiver, Xianguo Li
Summary: The relationship between molecular conformation of anion exchange ionomers (AEIs) and catalyst layer (CL) parameters in anion exchange membrane fuel cells (AEMFCs) under dynamic operating conditions was studied. The meta-AEI showed a lower swelling ratio compared to para-AEI, resulting in higher water retention ability and improved CL stability.
JOURNAL OF MATERIALS CHEMISTRY A
(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)
