Article
Chemistry, Physical
Iyappan Arunkumar, Ramasamy Gokulapriyan, Venkitesan Sakthivel, Ae Rhan Kim, Min Suk Oh, Jae Young Lee, Seonyeob Kim, Sunyoup Lee, Dong Jin Yoo
Summary: This study demonstrates the improvement of electrochemical and physicochemical characteristics of anion-exchange membranes for fuel cell applications by incorporating carboxylic acid-functionalized graphene nanofibers as fillers. The addition of these fillers enhances the electrochemical performance and stability of the membranes, resulting in increased hydroxide conductivity and peak power density. This research highlights the importance of enhancing the properties of commercial membranes for anion-exchange membrane fuel cells.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Energy & Fuels
Kai Yang, Hongzhe Ni, Xinming Du, Tianen Shui, Hongcheng Shen, Jingmei Xu, Yao Liu, Chenyang Li, Yepeng Gao, Zhe Wang
Summary: By preparing and analyzing the properties of poly (aryl ether ketone) based cross-linked anion exchange membranes, the study confirmed that the membrane has excellent conductivity and stability in alkaline fuel cells, providing new possibilities for the development of alkaline fuel cells.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2021)
Article
Engineering, Chemical
Andrit Allushi, Thanh Huong Pham, Patric Jannasch
Summary: This study focused on developing anion exchange membranes (AEMs) with high alkaline stability and hydroxide conductivity by functionalizing fluorene units with dual pairs of quaternary piperidinium cations. The AEMs with bisPip side chains demonstrated superior conductivity and alkaline stability compared to AEMs with monoPip cations per fluorene unit, highlighting the advantage of locally concentrating the cations in the polymer structure.
JOURNAL OF MEMBRANE SCIENCE
(2021)
Article
Chemistry, Multidisciplinary
Juanjuan Han, Wenfeng Song, Xueqi Cheng, Qiang Cheng, Yangyang Zhang, Chifeng Liu, Xiaorong Zhou, Zhandong Ren, Meixue Hu, Tianshu Ning, Li Xiao, Lin Zhuang
Summary: The study highlights the impact of different types of cations on AEMs performance, emphasizing the need to select suitable backbones to match the cations for improved membrane performance.
Article
Chemistry, Physical
Dengji Zhang, Shicheng Xu, Ruiying Wan, Yunfei Yang, Ronghuan He
Summary: Composite anion exchange membranes with superior conductivity are developed by cross-linking QPPO with NGO, showing low water uptake and swelling ratio, high ion conductivity and alkaline stability. The proposed composite membrane exhibits a hydroxide conductivity of 123 mS cm(-1) and retains a conductivity of 83 mS cm(-1) after immersion in KOH solution for 384 hours, outperforming pristine QPPO membrane.
JOURNAL OF POWER SOURCES
(2022)
Article
Chemistry, Physical
Yi-cun Zhou, Rui-Ying Bao, Zhengying Liu, Ming-Bo Yang, Wei Yang
Summary: A polyketone resin-based anion exchange membrane was synthesized and processed using electrospinning and hot pressing techniques, demonstrating high ionic conductivity and mechanical properties. The electrospun membrane shows potential in various electrochemical devices under alkaline conditions.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Green & Sustainable Science & Technology
C. Simari, M. H. Ur Rehman, A. Capri, I. Gatto, V. Baglio, I. Nicotera
Summary: 'Green' hydrogen production using anion exchange membrane (AEM) water electrolysis is a promising approach to address the energy crisis. In order to achieve commercially viable hydrogen generation, improvements in AEM technology, including membrane stability, operating temperature, ion conductivity, power performance, and cost reduction, are essential.
MATERIALS TODAY SUSTAINABILITY
(2023)
Article
Chemistry, Physical
Ning Wang, Tingting Zuo, Ke Liu, Xiaoqing Wei, Shu Hu, Quantong Che
Summary: In this research, Imidazolium modified metal organic frameworks (ImMOFs) were synthesized and QPPO/ImMOFs composite membranes were constructed. The membranes exhibited enhanced hydroxide conductivity and alkaline stability. The QPPO/7%ImMOFs membrane showed good hydroxide conduction behavior and satisfactory alkaline stability at subzero temperature.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Engineering, Chemical
Priya Goel, Priyabrata Mandal, E. Bhuvanesh, Vinod K. Shahi, Sujay Chattopadhyay
Summary: A new strategy for synthesizing cross-linked nanocomposite anion exchange membranes from functionalized graphene oxide was reported, showing promising physicochemical and electrochemical properties. The optimized AEM displayed high ion exchange capacity, conductivity, and limiting current density, making it a potential candidate for industrial applications in desalination and purification processes.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Biochemistry & Molecular Biology
Aruna Kumar Mohanty, Young-eun Song, Jung-rae Kim, Nowon Kim, Hyun-jong Paik
Summary: The synthesized AEMs exhibited good mechanical strength and thermal stability, along with distinct hydrophobic/hydrophilic phase-separated morphology, resulting in higher conductivity and lower water uptake. The AEM materials showed superior performance compared to commercial membranes in microbial fuel cell applications, with maximum power density reaching 310 mW/m2.
Article
Chemistry, Physical
Karam Yassin, Igal G. Rasin, Simon Brandon, Dario R. Dekel
Summary: This study investigates the influence of anion-exchange ionomer (AEI) hydroxide conductivity within the cathode electrode on the performance and stability of anion-exchange membrane fuel cells (AEMFCs) through computational analysis. The results demonstrate that enhancing AEI hydroxide conductivity in the cathode significantly improves AEMFC performance and stability by increasing catalyst utilization, reducing potential drop across the cathode, and enhancing hydration levels.
JOURNAL OF POWER SOURCES
(2022)
Article
Chemistry, Physical
Balakondareddy Sana, Anupam Das, Tushar Jana
Summary: The development of efficient alkaline anion exchange membranes (AAEMs) is important. Cross-linking the polybenzimidazole chains (PyPBI) can improve the physical properties of the polymer, especially the hydroxide ion conductivity, alkaline stability, and mechanical stability.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Engineering, Chemical
Xiaofeng Wan, Xiangtai Wei, Jinming Ge, Lingfeng Lu, Ziqiang Liu, Yuanqin Zhu
Summary: A polymer with high hydroxide conductivity, dimensional stability, and mechanical stability was synthesized using a newly designed di-quaternized side-chain precursor. The resulting anion exchange membranes exhibited high conductivity, robust mechanical properties, and excellent alkaline stability. These membranes also demonstrated high power density in fuel cells.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Juanjuan Han, Yangyang Zhang, Xiumeng Zheng, Yuyang Lu, Wanting Li, Xiaorong Zhou, Zhandong Ren, Yi Liu, Meixue Hu, Li Xiao, Lin Zhuang
Summary: A series of cross-linked AEMs with rigid and flexible backbones are synthesized, which exhibit enhanced mechanical properties, impressive ionic conductivity, and excellent chemical stability. Specifically, c-DQPPO/PVA-7.5 shows outstanding wet-state tensile strength and elongation at break, as well as a peak power density in a fuel cell.
Article
Chemistry, Physical
Chuan Long, Tuo Zhao, Lin Tian, Qiao Liu, Fanghui Wang, Zhihua Wang, Hong Zhu
Summary: By adjusting the polymer structure and alkyl chain modification, a high-performance and alkaline-stable anion exchange membrane with high ionic conductivity and excellent alkaline stability was successfully prepared. The membrane showed promising potential for application in anion exchange membrane fuel cells.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Engineering, Chemical
Jiawei Hou, Shixuan Guo, Nigel Graham, Wenzheng Yu, Kening Sun, Ting Liu
Summary: A novel 2D composite membrane based on r-HGO and MXene materials was developed, demonstrating exceptional performance for water treatment in terms of permeability, pollutant rejection, and physical stability. The optimization of preparation conditions and material proportions can result in high water flux and efficient removal of pollutants.
JOURNAL OF MEMBRANE SCIENCE
(2024)
Retraction
Engineering, Chemical
Chang Liu, Jinghong Liu, Liang Zhu, Shanfu Tang, Huixin Xiong
JOURNAL OF MEMBRANE SCIENCE
(2024)
Article
Engineering, Chemical
Rui Gao, Caihong Liu, Andreia F. Faria, Qiang He, Chun Yang, Jun Ma
Summary: A novel copolymer architecture has been developed to address biofouling concerns in thin-film composite (TFC) membranes by integrating anti-fouling, bactericidal, and fouling-release functions. The multifunctional membrane demonstrates promising anti-adhesive properties, self-cleaning ability, and high flux recovery rate.
JOURNAL OF MEMBRANE SCIENCE
(2024)
Article
Engineering, Chemical
Alexander T. Bridge, Noah P. Wamble, Matthew S. Santoso, Joan F. Brennecke, Benny D. Freeman
Summary: This study demonstrates the reproducible preparation of high-flux defect-free asymmetric gas separation membranes using Cyrene(TM) as a majority dope formulation component. By adjusting the volume ratios of Cyrene(TM) and THF, as well as the concentrations of Matrimid(R) and the dry step time, optimal membrane performance is achieved.
JOURNAL OF MEMBRANE SCIENCE
(2024)
Article
Engineering, Chemical
Alessandra Imbrogno, Han Ya Lin, Babak Minofar, Andrea Iris Schaefer
Summary: In this study, a composite nanofiber membrane containing cross-linked beta-cyclodextrin-epichlorohydrin was prepared and evaluated for the removal of steroid hormones. The results showed that the membrane had high adsorption capacity and the ability to form a specific inclusion complex interaction with the hormones, indicating its potential application in hormone removal.
JOURNAL OF MEMBRANE SCIENCE
(2024)
Article
Engineering, Chemical
Bora Shin, Jaewon Shin, Yanuar Chandra Wirasembada, Ki Young Park, Jinwoo Cho
Summary: This study develops a mathematical model to estimate the initial flux of volatile fatty acids in the direct contact membrane distillation process. It identifies the parameters affecting the flux and their relationship with pH.
JOURNAL OF MEMBRANE SCIENCE
(2024)
Article
Engineering, Chemical
Yi-Jui Yeh, Jr Rong Liou, Wei Lin, Kuo-Lun Tung, Wei-Hung Chiang
Summary: This study demonstrates an effective plasma engineering method to create nitrogen-doped graphene quantum dot (NGQD)-inorganic nanocomposites for tunable molecular separation. The composite materials show high separation efficiency and controllable nanopore structures, making them potentially valuable for various applications.
JOURNAL OF MEMBRANE SCIENCE
(2024)
Article
Engineering, Chemical
Horacio Lopez-Marques, Kristofer L. Gleason, Manuel Aguilar-Vega, Rita Sulub-Sulub, J. Ehren Eichler, Hyeonji Oh, C. Buddie Mullins, Benny D. Freeman, Manish Kumar
Summary: In this study, water transport properties in Carbon Molecular Sieve (CMS) membranes were investigated. It was found that membranes synthesized at different pyrolysis temperatures exhibited varying water permeabilities. Compared to other polymeric materials, CMS membranes showed high water permeability, indicating potential for dehydration applications.
JOURNAL OF MEMBRANE SCIENCE
(2024)
Article
Engineering, Chemical
Dmitry A. Alentiev, Roman Yu. Nikiforov, Marina A. Rudakova, Danil P. Zarezin, Maxim A. Topchiy, Andrey F. Asachenko, Nikolay A. Belov, Maxim Bermeshev
Summary: A series of new norbornene-type monomers containing linear and branched substituents were synthesized, and robust thin membranes were prepared by vinyl-addition polymerization. Gas separation performance for the synthesized polymers was evaluated, and the structure of substituent side chains was found to significantly affect gas permeability and CO2 facilitated transport.
JOURNAL OF MEMBRANE SCIENCE
(2024)
Article
Engineering, Chemical
Lei Yan, Qi Zhang, Ze Zhang, Gui-Jie Li, Yi Jin, Xin-Lin Zhang, Yan-Yun Sun
Summary: In this study, a continuous, stable and fast ion transport channel was established through in-situ guided cross-linking of zinc alginate hydrogels on a porous membrane, overcoming the negative pore effect and effectively inhibiting the dendrite growth of zinc anodes and interfacial side reactions.
JOURNAL OF MEMBRANE SCIENCE
(2024)
Article
Engineering, Chemical
Yuqing Zhang, Ailing Zhang, Huiyang He, Yuting Fan, Yongjiang Li, Song Wang, Sanxi Li
Summary: The Langmuir-Blodgett self-assembly process is used to create an ordered SPEEK membrane, which enhances the proton conductivity by three times compared to conventional solution casting method.
JOURNAL OF MEMBRANE SCIENCE
(2024)
Article
Engineering, Chemical
Hasan Ismaeel, David Gibson, Eleonora Ricci, Maria Grazia De Angelis
Summary: In this study, a machine learning-based group contribution method (ML-GC) was developed to predict pure polymer parameters and successfully applied to predict gas solubility and gas solubility isotherms in glassy polymeric membranes. The model showed satisfactory performance on a small dataset, but has the potential to provide more accurate predictions for a wider range of polymers as more data becomes available.
JOURNAL OF MEMBRANE SCIENCE
(2024)
Article
Engineering, Chemical
Yi Ji, Yu Sun, Huilin Li, Qiang Fu, Yan Zhang
Summary: Previous studies have shown that vibration- or rotation-based techniques can effectively mitigate fouling during membrane filtration. However, it is difficult to incorporate these techniques with spiral wound modules (SWMs) widely used in water and wastewater treatment. This study developed a prototype membrane system to accommodate angular vibrations with a modified SWM, and experimental results showed that applying angular vibrations can effectively control algal fouling in an SWM with lower energy consumption compared to traditional methods.
JOURNAL OF MEMBRANE SCIENCE
(2024)
Article
Engineering, Chemical
Lakshmeesha Upadhayaya, Abaynesh Yihdego Gebreyohannes, Muhammad Wakil Shahzad, Usman T. Syed, Sandra L. Aristizabal, Radoslaw Gorecki, Suzana P. Nunes
Summary: Increasing temperatures worldwide pose a significant health risk, exacerbated by high humidity. Conventional air conditioners contribute heavily to carbon dioxide emissions, with dehumidification being a major factor. Membrane-based dehumidification system offers energy efficiency and non-toxic water vapor removal. This study demonstrates a membrane dehumidification system with polymeric hollow fibers coated with a green polyphenol coating, showing remarkable water vapor transport rate and selectivity. Long-term testing reveals minimal decline in vapor transport and a 4-5 times higher coefficient of performance (COP) compared to conventional dehumidifiers, making it a highly competitive, energy-saving device with reduced emissions and a smaller footprint.
JOURNAL OF MEMBRANE SCIENCE
(2024)
Article
Engineering, Chemical
Zhengzhong Zhou, Xue Zhu, Yi Yuan, Shaoqiang Wang, Xiaoshan Meng, Taoli Huhe, Qian Wang
Summary: In this study, lignin, a biomass material, was chemically modified and utilized in the interfacial polymerization process to improve the performance of nanofiltration membranes. The modified membranes showed enhanced hydrophilicity and anti-fouling properties, and the optimization of membrane pore size increased permeability. The study also demonstrated the potential application of the membranes in biogas slurry valorization.
JOURNAL OF MEMBRANE SCIENCE
(2024)