Article
Engineering, Chemical
Wei Yuan, Lingping Zeng, Shangkun Jiang, Caili Yuan, Qian He, Jianchuan Wang, Qiang Liao, Zidong Wei
Summary: Anion exchange membrane fuel cells (AEMFCs) have the advantage of low cost, but the use and commercialization of anion exchange membranes (AEMs) have always been challenging. This study successfully prepared AEMs and ionomers with non-rotatable rigid carbazole group and piperidinium group, and demonstrated their excellent performance in conductivity, mechanical strength, and stability. Moreover, the fuel cell based on these materials showed outstanding peak power density and long-term stability.
JOURNAL OF MEMBRANE SCIENCE
(2022)
Review
Chemistry, Physical
Hari Gopi Kuppusamy, Prabhakaran Dhanasekaran, Niluroutu Nagaraju, Maniprakundil Neeshma, Baskaran Mohan Dass, Vishal M. Dhavale, Sreekuttan M. Unni, Santoshkumar D. Bhat
Summary: This review provides an in-depth analysis of the recent advances in solid anion exchange membranes (AEM) and their viability in alkaline polymer electrolyte fuel cells (APEFC). The mechanical and thermal stability of AEMs are determined by the characteristics of the polymer matrix, while the anionic groups govern the anion exchange capacity, transport number, and conductivities. The review emphasizes the radiation grafting of monomers and chemical modifications to introduce cationic charges, and highlights the recent synthesis advancements in AEMs from various polymers. Overall, this review offers a comprehensive understanding of AEMs and their potential applications in APEFC.
Review
Electrochemistry
Jiandang Xue, Junfeng Zhang, Xin Liu, Tong Huang, Haifei Jiang, Yan Yin, Yanzhou Qin, Michael D. Guiver
Summary: This review focuses on the recent advances in alkaline-stable AEM development, with a particular emphasis on the outstanding performance of cQA-based AEMs in alkaline stability. The classification of different types of cQAs and discussions on improving structural design for enhanced AEM stability are highlighted in the article.
ELECTROCHEMICAL ENERGY REVIEWS
(2022)
Article
Engineering, Chemical
Min Liu, Xu Hu, Bin Hu, Lei Liu, Nanwen Li
Summary: The superacid-catalyzed polymerization and quaternization reaction is an effective method for preparing AEM materials with high conductivity and stability. The PQP-100 AEM shows excellent conductivity, morphology stability, catalytic efficiency, and advantages in membrane thickness.
JOURNAL OF MEMBRANE SCIENCE
(2022)
Review
Chemistry, Physical
Masa Hren, Mojca Bozic, Darinka Fakin, Karin Stana Kleinschek, Selestina Gorgieva
Summary: Alkaline anion exchange membrane fuel cells are gaining increasing attention as promising electrochemical devices for energy production. Significant progress has been made in designing and developing synthetic or naturally-derived anion exchange membrane, although challenges remain in terms of long-term stability.
SUSTAINABLE ENERGY & FUELS
(2021)
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
Chemistry, Multidisciplinary
Asep Muhamad Samsudin, Michaela Roschger, Sigrid Wolf, Viktor Hacker
Summary: Anion exchange membrane fuel cells (AEMFCs) have gained considerable attention in recent years. This study prepared and characterized polymer composite membranes composed of quaternary ammonium poly(vinyl alcohol) (QPVA) and poly(diallyldimethylammonium chloride) (PDDA). The influence of QPVA/PDDA mass ratios on the membranes and fuel cells was evaluated, and the best performance was achieved with the eQP-PDD0.5 membrane at 80 degrees C.
Review
Polymer Science
Asep Muhamad Samsudin, Merit Bodner, Viktor Hacker
Summary: This review provides recent studies on Poly(vinyl alcohol) (PVA)-based membranes as alternative anion exchange membranes for alkaline fuel cells. It discusses the development of anion exchange membranes in general and highlights the performances and characteristics of recently reported PVA-based membranes. Furthermore, it discusses challenging issues and perspectives for future study of anion exchange membranes.
Article
Chemistry, Multidisciplinary
Chuan Hu, Na Yoon Kang, Hyun Woo Kang, Ju Yeon Lee, Xiaohua Zhang, Yong Jun Lee, Seung Won Jung, Jong Hyeong Park, Myeong-Geun Kim, Sung Jong Yoo, So Young Lee, Chi Hoon Park, Young Moo Lee
Summary: Researchers have developed a new type of polymer electrolyte for alkaline energy conversion devices using highly rigid triptycene as a branching agent. The electrolyte exhibits excellent conductivity, mechanical properties, anti-swelling ability, and alkaline stability. Fuel cells and water electrolyzers based on this electrolyte demonstrate promising performance, indicating wide application potential.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Polymer Science
Chunming Chen, Xingrong Zeng, Zhenlun Peng, Zhonghua Chen
Summary: Poly (terphenylene-methyl piperidine-biphenyl) was synthesized using biphenyl, terphenyl, and N-methyl-4-piperidone as raw materials to prepare anion exchange membranes (AEMs). The AEMs exhibited high ion conductivity of 49.16 mS/cm at 80(o)C due to the efficient transport of hydroxyl ions facilitated by the flexible copolymer backbone. The AEMs also showed excellent alkaline stability with only 0.63% deterioration in ion conductivity after soaking in 1 M KOH at 80(o)C for 720 h.
JOURNAL OF APPLIED POLYMER SCIENCE
(2023)
Article
Chemistry, Physical
Sapir Willdorf-Cohen, Avital Zhegur-Khais, Julia Ponce-Gonzalez, Saja Bsoul-Haj, John R. Varcoe, Charles E. Diesendruck, Dario R. Dekel
Summary: Recently, there has been increased interest in the development of durable anion-exchange membrane fuel cells (AEMFCs) due to their potential to use low-cost, sustainable components. However, the decomposition of the quaternary ammonium (QA) cationic groups in the anion-exchange membranes (AEMs) during cell operation remains a challenge. In this study, a reliable ex situ technique using Raman spectroscopy was developed to measure the alkaline stability of insoluble AEMs. The results showed that the stability of different AEMs could be accurately measured alongside changes in their conductivity and ion-exchange capacities. This work provides valuable insights for the design and development of stable AEMs for fuel cells and water electrolyzers.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Xingyu Wu, Nanjun Chen, Chuan Hu, Harm-Anton Klok, Young Moo Lee, Xile Hu
Summary: A fluorination strategy is reported to create a phase-separated morphological structure in poly(aryl piperidinium) anion-exchange membranes (AEMs). The fluorinated AEMs possess high conductivity and dimensional stability, as well as excellent mechanical and chemical stability. AEMFCs using these fluorinated AEMs achieve outstanding peak power density and remain stable over extended operation.
ADVANCED MATERIALS
(2023)
Article
Engineering, Chemical
Xiaofeng Li, Zimo Wang, Yaohan Chen, Yonggang Li, Jing Guo, Jifu Zheng, Shenghai Li, Suobo Zhang
Summary: This study investigates the alkaline stability of imidazolium-based monomers with different C4/C5-position substituents using density functional theory (DFT), and analyzes their degradation mechanism when treated with 10 M NaOH. Based on this, methyl-substituted imidazolium (MeIM) cationic compound is selected to construct ether-free main-chain type polymers through superacid-catalytic reaction, together with the introduction of branched monomer to inhibit water swelling of membrane. The optimized branched structure maintains stable dimension performance under 80 degrees C compared to linear polymer dissolved in water. Meanwhile, the alkaline-resisted membrane with branched structure expands the operating temperature range of fuel cell to 90 degrees C and maintains long-term durability.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Article
Engineering, Chemical
Kyu Ha Lee, Ji Young Chu, Ae Rhan Kim, Hwan Gyu Kim, Dong Jin Yoo
Summary: The study fabricated QPAEK/f-TiO2 composite membranes with varying contents of f-TiO2, and characterized their structure using different techniques. The addition of f-TiO2 enlarged the ion cluster and increased ion conductivity, with the maximum ion domain size and conductivity observed at 5wt% filler content.
JOURNAL OF MEMBRANE SCIENCE
(2021)
Article
Biochemistry & Molecular Biology
Selestina Gorgieva, Azra Osmic, Silvo Hribernik, Mojca Bozic, Jurij Svete, Viktor Hacker, Sigrid Wolf, Bostjan Genorio
Summary: In this research, a series of nanocomposite membranes based on chitosan and three different N-doped graphene derivatives were prepared and characterized, with the 0.07% loading of N-doped graphene derivatives significantly impacting the morphology and properties of the CS membrane. The CS/N rGONRs (0.07%) membrane showed improved performance in direct alkaline ethanol fuel cells compared to the pristine CS membrane.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2021)
Article
Chemistry, Physical
Jan-Patrick Melchior, Niina H. Jalarvo
JOURNAL OF PHYSICAL CHEMISTRY C
(2019)
Article
Chemistry, Physical
Mona Sarter, Doreen Niether, Bernd W. Koenig, Wiebke Lohstroh, Michaela Zamponi, Niina H. Jalarvo, Simone Wiegand, Joerg Fitter, Andreas M. Stadler
JOURNAL OF PHYSICAL CHEMISTRY B
(2020)
Article
Chemistry, Physical
Naresh C. Osti, Bianca Haberl, Niina Jalarvo, Reinhard Boehler, Jamie J. Molaison, Richard J. Goyette, Eugene Mamontov
Article
Chemistry, Physical
Qian Zhang, Congyan Zhang, Zachary D. Hood, Miaofang Chi, Chengdu Liang, Niina H. Jalarvo, Ming Yu, Hui Wang
CHEMISTRY OF MATERIALS
(2020)
Article
Chemistry, Physical
E. Novak, L. Daemen, K. Page, J. Neuefeind, M. Everett, T. Egami, N. Jalarvo
Summary: Barium hydride exhibits exceptional ionic transport properties at high temperatures, with a structural phase transition converting it into a fast ionic conductor through the introduction of disorder, deuterium site splitting, and dynamic structural fluctuations. Neutron scattering techniques and vibrational spectroscopy provide insights into the interplay between structure and dynamics governing the rare conduction process of hydride ions in solid-state materials.
JOURNAL OF PHYSICAL CHEMISTRY C
(2021)
Article
Chemistry, Multidisciplinary
Alexandra A. Koegel, Eve M. Mozur, Iain W. H. Oswald, Niina H. Jalarvo, Timothy R. Prisk, Madhusudan Tyagi, James R. Neilson
Summary: This article provides a detailed investigation on the role of organic cations in hybrid organic-inorganic perovskites and white light emission, and reveals the significant influence of organic cation dynamics on the luminescent properties.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2022)
Article
Multidisciplinary Sciences
Eric Novak, Luke Daemen, Anibal Javier Ramirez-Cuesta, Yongqiang Cheng, Robert Smith, Takeshi Egami, Niina Jalarvo
Summary: This research uses quasielastic and inelastic neutron scattering techniques to investigate the diffusion mechanism of hydride ions in different temperature phases, and finds that the diffusion capacity of hydrogen is significantly improved after the phase transition, allowing for efficient conduction of hydride ions through a series of hydrogen jumps.
SCIENTIFIC REPORTS
(2022)
Article
Chemistry, Physical
Sajan Kumar, Mayanak K. Gupta, Ranjan Mittal, Niina H. Jalarvo, Sanghamitra Mukhopadhyay, Rakesh Shukla, Srungarpu N. Achary, Alexander I. Kolesnikov, Avesh K. Tyagi, Samrath L. Chaplot
Summary: By manipulating the Li stoichiometry and/or host flexibility through ab initio molecular dynamics (AIMD) simulations, the Li+ conductivity in LiAlGeO4 can be significantly improved, especially through amorphization. Excess Li stoichiometry accelerates Li+ diffusion, while the amorphous structure greatly enhances Li+ diffusion.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Physics, Multidisciplinary
A. Scheie, O. Benton, M. Taillefumier, L. D. C. Jaubert, G. Sala, N. Jalarvo, S. M. Koohpayeh, N. Shannon
Summary: In this study, the dynamical properties of Yb2Ti2O7 are explored using inelastic neutron scattering. It is found that spin correlations exhibit dynamic scaling behavior, similar to that found near a quantum critical point. The observed scaling collapse is explained within a phenomenological theory of multiple-phase competition, and is also confirmed in semiclassical simulations of a microscopic model of Yb2Ti2O7.
PHYSICAL REVIEW LETTERS
(2022)
Article
Chemistry, Physical
Christian Beck, Marco Grimaldo, Michal K. Braun, Lena Buhl, Olga Matsarskaia, Niina H. Jalarvo, Fajun Zhang, Felix Roosen-Runge, Frank Schreiber, Tilo Seydel
Summary: This study systematically investigates cluster formation in aqueous solutions of the globular protein BSA approaching phase separation, considering factors such as temperature, protein concentration, and concentrations of trivalent salts YCl3 and LaCl3. By employing a dynamical technique that detects transient clusters on the order of a few nanoseconds, the short-time self-diffusion of the protein clusters is unambiguously determined using incoherent neutron spectroscopy. The calculated inter-particle attraction strength increases with salt concentration and temperature in the studied regime and is linked to the macroscopic behavior of the samples.
Article
Chemistry, Physical
Mayanak K. Gupta, Ranjan Mittal, Sajan Kumar, Baltej Singh, Niina H. Jalarvo, Olivier Delaire, Rakesh Shukla, Srungarpu N. Achary, Alexander I. Kolesnikov, Avesh K. Tyagi, Samrath L. Chaplot
Summary: The study found that sodium diffusion behavior varies in different phases of NASO, with QENS experiments showing localized diffusion behavior in L-NASO and N-NASO, and long-range diffusion behavior in H-NASO. AIMD simulations demonstrated that excess sodium ions enhance the flexibility of the host network, enabling long-range diffusion pathways.
JOURNAL OF MATERIALS CHEMISTRY A
(2021)
Article
Chemistry, Multidisciplinary
Andrew Johnston, Grant Walters, Makhsud Saidaminov, Ziru Huang, Koen Bertens, Niina Jalarvo, Edward H. Sargent
Article
Chemistry, Physical
Qian Chen, Niina H. Jalarvo, Wei Lai
JOURNAL OF MATERIALS CHEMISTRY A
(2020)
Article
Chemistry, Physical
Carin Eklof-Osterberg, Laura Mazzei, Erik Jedvik Granhed, Goeran Wahnstrom, Reji Nedumkandathil, Ulrich Haussermann, Aleksander Jaworski, Andrew J. Pell, Stewart F. Parker, Niina H. Jalarvo, Lars Borjesson, Maths Karlsson
JOURNAL OF MATERIALS CHEMISTRY A
(2020)
Article
Chemistry, Multidisciplinary
Xiaoming Liu, Yan Chen, Zachary D. Hood, Cheng Ma, Seungho Yu, Asma Sharafi, Hui Wang, Ke An, Jeff Sakamoto, Donald J. Siegel, Yongqiang Cheng, Niina H. Jalarvo, Miaofang Chi
ENERGY & ENVIRONMENTAL SCIENCE
(2019)
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)