1
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Wang F, Sun Z, Zhang H, Zhu H. Study on AEMs with Excellent Comprehensive Performance Prepared by Covalently Cross-Linked p-Triphenyl with SEBS Remotely Grafted Piperidine Cations. ACS APPLIED MATERIALS & INTERFACES 2024; 16:7894-7903. [PMID: 38300277 DOI: 10.1021/acsami.3c18256] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/02/2024]
Abstract
A series of SEBS-C6-PIP-yPTP (y = 0-15%) AEMs with good mechanical and chemical stability were prepared by combining the strong rigidity of p-triphenyl, good toughness of SEBS, and excellent stability of PIP cations. After the introduction of a p-triphenyl polymer into the main chain, a clear hydrophilic-hydrophobic phase separation structure was constructed within the membrane, forming a continuous and interconnected ion transport channel to improve ion transport efficiency. Moreover, the molecular chains of the cross-linked AEMs change from chain-like to network-like, and the tighter binding between each molecule increases the tensile strength. The special structure of the six-membered ring makes PIP have a significant constraint effect; when nucleophilic substitution and Hoffman elimination occur at the α and β positions, the required transition state potential energy increases, making the reaction difficult to occur and improving the alkaline stability of the polymer membrane. The SEBS-C6-PIP-15%PTP membrane has the best mechanical properties (Ts = 38.79 MPa, Eb = 183.09% at 80 °C, 100% RH), the highest ion conductivity (102.02 mS. cm-1 at 80 °C), and the best alkaline stability (6.23% degradation at 80 °C in a 2 M NaOH solution for 1400 h). It can be seen that organic-organic covalent cross-linking is an effective means to improve the comprehensive performance of AEMs.
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Affiliation(s)
- Fanghui Wang
- State Key Laboratory of Chemical Resource Engineering, Institute of Modern Catalysis, Department of Organic Chemistry, College of Chemistry, Beijing University of Chemical Technology, Beijing 100029, P. R. China
| | - Zhaonan Sun
- China Fire and Rescue Institute, Beijing 102201, China
| | - Hanfei Zhang
- State Key Laboratory of Chemical Resource Engineering, Institute of Modern Catalysis, Department of Organic Chemistry, College of Chemistry, Beijing University of Chemical Technology, Beijing 100029, P. R. China
| | - Hong Zhu
- State Key Laboratory of Chemical Resource Engineering, Institute of Modern Catalysis, Department of Organic Chemistry, College of Chemistry, Beijing University of Chemical Technology, Beijing 100029, P. R. China
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2
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Wang X, Thomas AM, Lammertink RGH. Dimensionally Stable Anion Exchange Membranes Based on Macromolecular-Cross-Linked Poly(arylene piperidinium) for Water Electrolysis. ACS APPLIED MATERIALS & INTERFACES 2024; 16:2593-2605. [PMID: 38175180 PMCID: PMC10797592 DOI: 10.1021/acsami.3c13801] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/19/2023] [Revised: 12/19/2023] [Accepted: 12/21/2023] [Indexed: 01/05/2024]
Abstract
The advancement of anion exchange membranes (AEMs) with superior ionic conductivity has been greatly hindered due to the inherent "trade-off" between membrane swelling and ionic conductivity. To resolve this dilemma, macromolecular covalently cross-linked C-FPVBC-x AEMs were fabricated by combining partially functionalized ether-bond-free polystyrene (FPVBC) with poly(arylene piperidinium). The results from atomic force microscopy reveal that an increase in the ratio of FPVBC promotes the fabrication of microphase separation morphology, resulting in a high ionic conductivity of 40.15 mS cm-1 (30 °C) for the C-FPVBC-1.7 membrane. Molecular dynamics simulations further examine the ionic conduction effect of cross-linked AEMs. Besides, the unique cross-linking structure significantly improves mechanical and alkaline stability. After treatment in 1 M KOH at 50 °C for 1200 h, the C-FPVBC-1.7 membrane shows only a 6.9% decrease in conductivity. The C-FPVBC-1.7 AEM-based water electrolyzer achieves a high current density of 890 mA cm-2 at 2.4 V (80 °C) and maintains good stability, enduring over 100 h at 100 mA cm-2 (50 °C). These results demonstrate the significant potential of macromolecularly cross-linked AEMs for practical applications in water electrolysis.
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Affiliation(s)
- Xiuqin Wang
- Soft
Matter, Fluidics and Interfaces, Faculty of Science and Technology,
MESA+ Institute for Nanotechnology, University
of Twente, 7522 NB Enschede, The Netherlands
- School
of Environment and Civil Engineering, Dongguan
University of Technology, Dongguan 523808, P. R. China
| | - Angela Mary Thomas
- Soft
Matter, Fluidics and Interfaces, Faculty of Science and Technology,
MESA+ Institute for Nanotechnology, University
of Twente, 7522 NB Enschede, The Netherlands
- TECNALIA, Basque Research and Technology
Alliance (BRTA), Mikeletegi
Pasealekua 2, 20009 Donostia-San Sebastian, Spain
| | - Rob G. H. Lammertink
- Soft
Matter, Fluidics and Interfaces, Faculty of Science and Technology,
MESA+ Institute for Nanotechnology, University
of Twente, 7522 NB Enschede, The Netherlands
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3
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Kim N, Oh W, Knust KN, Zazyki Galetto F, Su X. Molecularly Selective Polymer Interfaces for Electrochemical Separations. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:16685-16700. [PMID: 37955994 DOI: 10.1021/acs.langmuir.3c02389] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2023]
Abstract
The molecular design of polymer interfaces has been key for advancing electrochemical separation processes. Precise control of molecular interactions at electrochemical interfaces has enabled the removal or recovery of charged species with enhanced selectivity, capacity, and stability. In this Perspective, we provide an overview of recent developments in polymer interfaces applied to liquid-phase electrochemical separations, with a focus on their role as electrosorbents as well as membranes in electrodialysis systems. In particular, we delve into both the single-site and macromolecular design of redox polymers and their use in heterogeneous electrochemical separation platforms. We highlight the significance of incorporating both redox-active and non-redox-active moieties to tune binding toward ever more challenging separations, including structurally similar species and even isomers. Furthermore, we discuss recent advances in the development of selective ion-exchange membranes for electrodialysis and the critical need to control the physicochemical properties of the polymer. Finally, we share perspectives on the challenges and opportunities in electrochemical separations, ranging from the need for a comprehensive understanding of binding mechanisms to the continued innovation of electrochemical architectures for polymer electrodes.
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Affiliation(s)
- Nayeong Kim
- Department of Chemical and Biomolecular Engineering, University of Illinois Urbana-Champaign, Urbana, Illinois 61801, United States
| | - Wangsuk Oh
- Department of Chemical and Biomolecular Engineering, University of Illinois Urbana-Champaign, Urbana, Illinois 61801, United States
| | - Kyle N Knust
- Department of Chemistry, Millikin University, 1184 W. Main Street, Decatur, Illinois 62522, United States
| | - Fábio Zazyki Galetto
- Departamento de Química, Universidade Federal de Santa Catarina (UFSC), Florianopolis SC 88040-900, Brazil
| | - Xiao Su
- Department of Chemical and Biomolecular Engineering, University of Illinois Urbana-Champaign, Urbana, Illinois 61801, United States
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Phua YK, Fujigaya T, Kato K. Predicting the anion conductivities and alkaline stabilities of anion conducting membrane polymeric materials: development of explainable machine learning models. SCIENCE AND TECHNOLOGY OF ADVANCED MATERIALS 2023; 24:2261833. [PMID: 37854121 PMCID: PMC10580864 DOI: 10.1080/14686996.2023.2261833] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/22/2023] [Accepted: 09/18/2023] [Indexed: 10/20/2023]
Abstract
Anion exchange membranes (AEMs) are core components in fuel cells and water electrolyzers, which are crucial to realize a sustainable hydrogen society. The low anion conductivity and durability of AEMs have hindered the commercialization of AEM-based devices, and research and development (R&D) to improve AEM materials is often resource-intensive. Although machine learning (ML) is commonly used in many fields to accelerate R&D while reducing resource consumption, it is rarely used in the AEM field. Three problems hinder the adoption of ML models, namely, the low explainability of ML models; complication with expressing both homopolymers and copolymers in unity to train a single ML model; and difficulty in building a single ML model that comprehends various polymer types. This study presents the first ML models that solve all three problems. Our models predicted the anion conductivity for a diverse set of unseen AEM materials with high accuracy (root mean squared error = 0.014 S cm-1), regardless of their state (freshly synthesized or degraded). This enables virtual pre-synthesis screening of novel AEM materials, reducing resource consumption. Moreover, human-comprehensible prediction logic revealed new factors affecting the anion conductivity of AEM materials. Such capability to reveal new important variables for AEM materials design could shift the paradigm of AEM R&D. This proposed method is not limited to AEM materials, instead it presents a technology that is applicable to the diverse set of polymers currently available.
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Affiliation(s)
- Yin Kan Phua
- Department of Applied Chemistry, Graduate School of Engineering, Kyushu University, Fukuoka, Japan
| | - Tsuyohiko Fujigaya
- Department of Applied Chemistry, Graduate School of Engineering, Kyushu University, Fukuoka, Japan
- International Institute for Carbon Neutral Energy Research, Kyushu University, Fukuoka, Japan
- Center for Molecular Systems, Kyushu University, Fukuoka, Japan
| | - Koichiro Kato
- Department of Applied Chemistry, Graduate School of Engineering, Kyushu University, Fukuoka, Japan
- Center for Molecular Systems, Kyushu University, Fukuoka, Japan
- Research Institute for Information Technology, Kyushu University, Fukuoka, Japan
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5
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Clemens AL, Jayathilake BS, Karnes JJ, Schwartz JJ, Baker SE, Duoss EB, Oakdale JS. Tuning Alkaline Anion Exchange Membranes through Crosslinking: A Review of Synthetic Strategies and Property Relationships. Polymers (Basel) 2023; 15:polym15061534. [PMID: 36987313 PMCID: PMC10051716 DOI: 10.3390/polym15061534] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2023] [Revised: 03/14/2023] [Accepted: 03/15/2023] [Indexed: 03/22/2023] Open
Abstract
Alkaline anion exchange membranes (AAEMs) are an enabling component for next-generation electrochemical devices, including alkaline fuel cells, water and CO2 electrolyzers, and flow batteries. While commercial systems, notably fuel cells, have traditionally relied on proton-exchange membranes, hydroxide-ion conducting AAEMs hold promise as a method to reduce cost-per-device by enabling the use of non-platinum group electrodes and cell components. AAEMs have undergone significant material development over the past two decades; however, challenges remain in the areas of durability, water management, high temperature performance, and selectivity. In this review, we survey crosslinking as a tool capable of tuning AAEM properties. While crosslinking implementations vary, they generally result in reduced water uptake and increased transport selectivity and alkaline stability. We survey synthetic methodologies for incorporating crosslinks during AAEM fabrication and highlight necessary precautions for each approach.
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Affiliation(s)
- Auston L. Clemens
- Materials Engineering Division, Lawrence Livermore National Laboratory, Livermore, CA 94550, USA
- Correspondence: (A.L.C.); (J.S.O.)
| | | | - John J. Karnes
- Materials Engineering Division, Lawrence Livermore National Laboratory, Livermore, CA 94550, USA
| | - Johanna J. Schwartz
- Materials Engineering Division, Lawrence Livermore National Laboratory, Livermore, CA 94550, USA
| | - Sarah E. Baker
- Materials Science Division, Lawrence Livermore National Laboratory, Livermore, CA 94550, USA
| | - Eric B. Duoss
- Materials Engineering Division, Lawrence Livermore National Laboratory, Livermore, CA 94550, USA
| | - James S. Oakdale
- Materials Science Division, Lawrence Livermore National Laboratory, Livermore, CA 94550, USA
- Correspondence: (A.L.C.); (J.S.O.)
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6
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Electrospun Poly(Styrene−Co−Vinylbenzyl Chloride−Co−Acrylonitrile) Nanofiber Mat as an Anion Exchange Membrane for Fuel Cell Applications. Polymers (Basel) 2022; 14:polym14163236. [PMID: 36015495 PMCID: PMC9416048 DOI: 10.3390/polym14163236] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2022] [Revised: 07/28/2022] [Accepted: 08/04/2022] [Indexed: 11/24/2022] Open
Abstract
A nanofiber mat of styrene−co−vinylbenzyl chloride−co−acrylonitrile copolymer as an anion exchange membrane (AEM) was synthesized via the electrospinning of organic reaction mixtures. The synthesized membranes were characterized using FT-IR spectroscopy for structural analysis. The AEM demonstrated a high ionic conductivity mainly due to the phase segregation in the membrane structure, as analyzed by transmission electron microscopy (TEM). The membrane properties such as water uptake, swelling ratio, and ion exchange capacity, as well as ionic conductivity, varied with the chemical composition. With the molar ratio of styrene, vinylbenzyl chloride, and acrylonitrile at 3:5:2, the highest ionic conductivity of 0.214 S cm−1 at 80 °C was observed. Additionally, the AEM retained 94% of original conductivity after 72 h of soaking in 1 M KOH solution.
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7
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Zeng L, Yuan W, Ma X, He Q, Zhang L, Wang J, Wei Z. Dual-Cation Interpenetrating Polymer Network Anion Exchange Membrane for Fuel Cells and Water Electrolyzers. Macromolecules 2022. [DOI: 10.1021/acs.macromol.1c02600] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Lingping Zeng
- School of Chemistry & Chemical Engineering, Chongqing University, Chongqing 400044, P. R. China
| | - Wei Yuan
- School of Chemistry & Chemical Engineering, Chongqing University, Chongqing 400044, P. R. China
| | - Xiaoqin Ma
- School of Chemistry & Chemical Engineering, Chongqing University, Chongqing 400044, P. R. China
| | - Qian He
- School of Chemistry & Chemical Engineering, Chongqing University, Chongqing 400044, P. R. China
| | - Ling Zhang
- School of Chemistry & Chemical Engineering, Chongqing University, Chongqing 400044, P. R. China
| | - Jianchuan Wang
- School of Chemistry & Chemical Engineering, Chongqing University, Chongqing 400044, P. R. China
- State Key Laboratory of Power Transmission Equipment & System Security and New Technology, Chongqing University, Chongqing 400044, P. R. China
| | - Zidong Wei
- School of Chemistry & Chemical Engineering, Chongqing University, Chongqing 400044, P. R. China
- State Key Laboratory of Power Transmission Equipment & System Security and New Technology, Chongqing University, Chongqing 400044, P. R. China
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8
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Yu N, Dong J, Wang T, Jin Y, Tang W, Yang J. Two new anion exchange membranes based on poly(bis-arylimidazolium) ionenes blend polybenzimidazole. POLYMER 2022. [DOI: 10.1016/j.polymer.2021.124491] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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9
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Yang Y, Li P, Zheng X, Sun W, Dou SX, Ma T, Pan H. Anion-exchange membrane water electrolyzers and fuel cells. Chem Soc Rev 2022; 51:9620-9693. [DOI: 10.1039/d2cs00038e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
The key components, working management, and operating techniques of anion-exchange membrane water electrolyzers and fuel cells are reviewed for the first time.
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Affiliation(s)
- Yaxiong Yang
- Institute of Science and Technology for New Energy, Xi’an Technological University, Xi’an, 710021, P. R. China
| | - Peng Li
- School of Science, RMIT University, Melbourne, VIC, 3000, Australia
- Institute for Superconducting & Electronic Materials, Australian Institute for Innovative Materials, University of Wollongong, Wollongong, NSW 2522, Australia
| | - Xiaobo Zheng
- Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Wenping Sun
- School of Materials Science and Engineering, Zhejiang University, Hangzhou 310058, P. R. China
- State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou 310027, P. R. China
| | - Shi Xue Dou
- Institute of Energy Material Science, University of Shanghai for Science and Technology, Shanghai 200093, China
- Institute for Superconducting & Electronic Materials, Australian Institute for Innovative Materials, University of Wollongong, Wollongong, NSW 2522, Australia
| | - Tianyi Ma
- School of Science, RMIT University, Melbourne, VIC, 3000, Australia
| | - Hongge Pan
- Institute of Science and Technology for New Energy, Xi’an Technological University, Xi’an, 710021, P. R. China
- School of Materials Science and Engineering, Zhejiang University, Hangzhou 310058, P. R. China
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10
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Jheng LC, Hsu CY, Yeh HY. Anion Exchange Membranes Based on Imidazoline Quaternized Polystyrene Copolymers for Fuel Cell Applications. MEMBRANES 2021; 11:901. [PMID: 34832132 PMCID: PMC8623886 DOI: 10.3390/membranes11110901] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/03/2021] [Revised: 11/19/2021] [Accepted: 11/19/2021] [Indexed: 11/16/2022]
Abstract
Imidazoline is a five-membered heterocycle derived by the partial reduction of one double bond of the imidazole ring. This work prepared new anion exchange membranes (AEMs) based on imidazoline quaternized polystyrene copolymers bearing N-b-hydroxyethyl oleyl imidazolinium pendent groups to evaluate the application potential for anion exchange membrane fuel cells (AEMFCs). For comparison, an imidazole quaternized polystyrene copolymer was also synthesized. The polymer chemical structure was confirmed by FTIR, NMR, and TGA. In addition, the essential properties of membranes, including ion exchange capacity (IEC), water uptake, and hydroxide conductivity, were measured. The alkaline stabilities of imidazolium-based and imidazolinium-based AEMs were compared by means of the changes in the TGA thermograms, FTIR spectra, and hydroxide conductivity during the alkaline treatment in 1 M KOH at 60 °C for 144 h. The results showed that the imidazolinium-based AEMs exhibited relatively lower hydroxide conductivity (5.77 mS/cm at 70 °C) but much better alkaline stability compared with the imidazolium-based AEM. The imidazolinium-based AEM (PSVBImn-50) retained 92% of its hydroxide conductivity after the alkaline treatment. Besides, the fuel cell performance of the imidazolium-based and imidazolinium-based AEMs was examined by single-cell tests.
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Affiliation(s)
- Li-Cheng Jheng
- Department of Chemical and Materials Engineering, National Kaohsiung University of Science and Technology, Kaohsiung 80778, Taiwan; (C.-Y.H.); (H.-Y.Y.)
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11
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Wang C, Liao J, Li J, Chen Q, Ruan H, Shen J. Alkaline enrichment via electrodialysis with alkaline stable side-chain-type polysulfone-based anion exchange membranes. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2021.119075] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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12
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Lin C, Cheng W, Miao X, Shen X, Ling L. Clustered piperidinium-functionalized poly(terphenylene) anion exchange membranes with well-developed conductive nanochannels. J Colloid Interface Sci 2021; 608:1247-1256. [PMID: 34739988 DOI: 10.1016/j.jcis.2021.10.122] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2021] [Revised: 10/08/2021] [Accepted: 10/21/2021] [Indexed: 10/20/2022]
Abstract
Anion exchange membrane fuel cells (AEMFCs) attract considerable attention owing to their high-power density and potential utilization of cheap non-noble metal catalysts. However, anion exchange membranes (AEMs) still face the problems of low conductivity, poor dimensional and chemical stability. To address these issues, AEMs with clustered piperidinium groups and ether-bond-free poly(terphenylene) backbone (3QPAP-x, x = 0.3, 0.4, and 0.5) were designed. Transmission electron microscope results show that the clustered ionic groups are responsible for fabricating well-developed conductive nanochannels and restraining the swelling behavior of the membranes. 3QPAP-0.4 and 3QPAP-0.5 AEMs exhibit higher conductivity (117.5 mS cm-1, 80 °C) and lower swelling ratio than that of commercial FAA-3-50 (80.4 mS cm-1, 80 °C). The conductivity of 3QPAP-0.5 only decreased by 10.4% after treating with 1 M NaOH at 80 °C for 720 h. The Hofmann elimination degradation of the cationic groups is restrained by the long flexible alkyl chain between cations. Based on the high performance of 3QPAP-0.5, an H2-O2-type AEMFC reaches 291.2 mW cm-2 (60 °C), which demonstrates that the as-prepared AEMs are promising for application in fuel cells.
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Affiliation(s)
- Chenxiao Lin
- School of Environment and Civil Engineering, Dongguan University of Technology, Dongguan 523808, China; Department for Electrochemical Energy Storage, Helmholtz-Zentrum Berlin für Materialien und Energie, Hahn-Meitner-Platz, Berlin 14109, Germany.
| | - Wenxue Cheng
- School of Environment and Civil Engineering, Dongguan University of Technology, Dongguan 523808, China
| | - Xinxin Miao
- School of Management, Wenzhou Business College, Wenzhou 325035, China.
| | - Xingchen Shen
- Karlsruhe Institute of Technology, Institute for Quantum Materials and Technologies, 76021 Karlsruhe, Germany.
| | - Liming Ling
- School of Environment and Civil Engineering, Dongguan University of Technology, Dongguan 523808, China
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Rotta EH, Marder L, Pérez-Herranz V, Bernardes AM. Characterization of an anion-exchange membrane subjected to phosphate and sulfate separation by electrodialysis at overlimiting current density condition. J Memb Sci 2021. [DOI: 10.1016/j.memsci.2021.119510] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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14
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Zhu ZY, Gou WW, Chen JH, Zhang QG, Zhu AM, Liu QL. Crosslinked naphthalene-based triblock polymer anion exchange membranes for fuel cells. J Memb Sci 2021. [DOI: 10.1016/j.memsci.2021.119569] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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15
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Lee KH, Chu JY, Kim AR, Kim HG, Yoo DJ. Functionalized TiO2 mediated organic-inorganic composite membranes based on quaternized poly(arylene ether ketone) with enhanced ionic conductivity and alkaline stability for alkaline fuel cells. J Memb Sci 2021. [DOI: 10.1016/j.memsci.2021.119435] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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16
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Xue J, Zhang J, Liu X, Huang T, Jiang H, Yin Y, Qin Y, Guiver MD. Toward alkaline-stable anion exchange membranes in fuel cells: cycloaliphatic quaternary ammonium-based anion conductors. ELECTROCHEM ENERGY R 2021. [DOI: 10.1007/s41918-021-00105-7] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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17
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Ribeiro EL, Davis EM, Mokhtarnejad M, Hu S, Mukherjee D, Khomami B. MOF-derived PtCo/Co 3O 4 nanocomposites in carbonaceous matrices as high-performance ORR electrocatalysts synthesized via laser ablation techniques. Catal Sci Technol 2021. [DOI: 10.1039/d0cy02099k] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
ZIF-67-derived carbon-based bimetallic nanocomposites with reduced Pt-loading via laser ablation synthesis in solution (LASiS) as a superior electrocatalyst for oxygen reduction reaction (ORR).
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Affiliation(s)
- Erick L. Ribeiro
- Department of Chemical & Biomolecular Engineering
- University of Tennessee
- Knoxville
- USA
- Material Research and Innovation Laboratory (MRAIL)
| | - Elijah M. Davis
- Department of Chemical & Biomolecular Engineering
- University of Tennessee
- Knoxville
- USA
- Nano-BioMaterials Laboratory for Energy, Energetics & Environment (nbml-E3)
| | - Mahshid Mokhtarnejad
- Department of Chemical & Biomolecular Engineering
- University of Tennessee
- Knoxville
- USA
- Material Research and Innovation Laboratory (MRAIL)
| | - Sheng Hu
- Department of Chemical & Biomolecular Engineering
- University of Tennessee
- Knoxville
- USA
- Nano-BioMaterials Laboratory for Energy, Energetics & Environment (nbml-E3)
| | - Dibyendu Mukherjee
- Department of Chemical & Biomolecular Engineering
- University of Tennessee
- Knoxville
- USA
- Material Research and Innovation Laboratory (MRAIL)
| | - Bamin Khomami
- Department of Chemical & Biomolecular Engineering
- University of Tennessee
- Knoxville
- USA
- Material Research and Innovation Laboratory (MRAIL)
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19
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Quaternized Tröger’s base polymer with crown ether unit for alkaline stable anion exchange membranes. Electrochim Acta 2020. [DOI: 10.1016/j.electacta.2020.136693] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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20
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Pan J, Sun Z, Zhu H, Cao H, Wang B, Zhao J, Yan F. Synthesis and characterization of main-chain type polyimidazolium-based alkaline anion exchange membranes. J Memb Sci 2020. [DOI: 10.1016/j.memsci.2020.118283] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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21
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Construction of crosslinked polybenz imidazole-based anion exchange membranes with ether-bond-free backbone. J Memb Sci 2019. [DOI: 10.1016/j.memsci.2019.117303] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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22
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Gao XL, Yang Q, Wu HY, Sun QH, Zhu ZY, Zhang QG, Zhu AM, Liu QL. Orderly branched anion exchange membranes bearing long flexible multi-cation side chain for alkaline fuel cells. J Memb Sci 2019. [DOI: 10.1016/j.memsci.2019.117247] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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23
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Liu J, Yan X, Gao L, Hu L, Wu X, Dai Y, Ruan X, He G. Long-branched and densely functionalized anion exchange membranes for fuel cells. J Memb Sci 2019. [DOI: 10.1016/j.memsci.2019.03.046] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Ge Q, Liang X, Ding L, Hou J, Miao J, Wu B, Yang Z, Xu T. Guiding the self-assembly of hyperbranched anion exchange membranes utilized in alkaline fuel cells. J Memb Sci 2019. [DOI: 10.1016/j.memsci.2018.12.049] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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25
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Li T, Yan X, Liu J, Wu X, Gong X, Zhen D, Sun S, Chen W, He G. Friedel-Crafts alkylation route for preparation of pendent side chain imidazolium-functionalized polysulfone anion exchange membranes for fuel cells. J Memb Sci 2019. [DOI: 10.1016/j.memsci.2018.11.079] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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26
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Li Y, Zhang J, Yang H, Yang S, Lu S, Wei H, Ding Y. Boosting the performance of an anion exchange membrane by the formation of well-connected ion conducting channels. Polym Chem 2019. [DOI: 10.1039/c9py00011a] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Enlarging the discrepancies between hydrophilic/hydrophobic segments in the chemical structure of an ionomer proved to be an efficient strategy to induce the formation of a microphase-separated morphology of the resulting anion exchange membrane.
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Affiliation(s)
- Yan Li
- School of Chemistry and Chemical Engineering
- Anhui Key Laboratory of Advanced Functional Materials and Devices
- Anhui Key Laboratory of Advanced Catalytic Materials and Reaction Engineering
- Hefei University of Technology
- Hefei 230009
| | - Jujia Zhang
- Beijing Key Laboratory of Bio-inspired Energy Materials and Devices
- School of Space and Environment
- Beihang University
- Beijing 100191
- China
| | - Hua Yang
- School of Chemistry and Chemical Engineering
- Anhui Key Laboratory of Advanced Functional Materials and Devices
- Anhui Key Laboratory of Advanced Catalytic Materials and Reaction Engineering
- Hefei University of Technology
- Hefei 230009
| | - Shanzhong Yang
- School of Chemistry and Chemical Engineering
- Anhui Key Laboratory of Advanced Functional Materials and Devices
- Anhui Key Laboratory of Advanced Catalytic Materials and Reaction Engineering
- Hefei University of Technology
- Hefei 230009
| | - Shanfu Lu
- Beijing Key Laboratory of Bio-inspired Energy Materials and Devices
- School of Space and Environment
- Beihang University
- Beijing 100191
- China
| | - Haibing Wei
- School of Chemistry and Chemical Engineering
- Anhui Key Laboratory of Advanced Functional Materials and Devices
- Anhui Key Laboratory of Advanced Catalytic Materials and Reaction Engineering
- Hefei University of Technology
- Hefei 230009
| | - Yunsheng Ding
- School of Chemistry and Chemical Engineering
- Anhui Key Laboratory of Advanced Functional Materials and Devices
- Anhui Key Laboratory of Advanced Catalytic Materials and Reaction Engineering
- Hefei University of Technology
- Hefei 230009
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Lin CX, Wu HY, Li L, Wang XQ, Zhang QG, Zhu AM, Liu QL. Anion Conductive Triblock Copolymer Membranes with Flexible Multication Side Chain. ACS APPLIED MATERIALS & INTERFACES 2018; 10:18327-18337. [PMID: 29737165 DOI: 10.1021/acsami.8b03757] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
To achieve highly conductive and stable anion exchange membranes (AEMs) for fuel cells, novel triblock copolymer AEMs bearing flexible side chain were synthesized. The triblock structure and flexible side chain are responsible for the developed hydrophilic/hydrophobic phase separated morphology and well-connected ion conducting channels, as confirmed by transmission electron microscopy. As a result, the triblock copolymer AEMs with flexible side chain (ABA-TQA- x) demonstrated considerably higher conductivities, up to 130.5 mS cm-1 at 80 °C, than the AEMs with monocation side chain (ABA-MQA). Furthermore, the long alkyl spacer between the backbone and quaternary ammonium groups, as well as long intercation spacer limits the water swelling of the membranes to some degree, resulting in good alkaline stability. The ABA-TQA-44 membrane retained 84.7% and 83.1% of its original conductivity and ionic exchange capacity, respectively, after immersed in a 1 M aqueous KOH solution at 80 °C for 480 h. Furthermore, the peak power density of a H2/O2 single cell using ABA-TQA-44 is 204.6 mW cm-2 at a current density of 500 mA cm-2 at 80 °C.
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N3-adamantyl imidazolium cations: Alkaline stability assessment and the corresponding comb-shaped anion exchange membranes. J Memb Sci 2018. [DOI: 10.1016/j.memsci.2017.09.069] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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A facile synthetic strategy for iron, aniline-based non-precious metal catalysts for polymer electrolyte membrane fuel cells. Sci Rep 2017; 7:5396. [PMID: 28710499 PMCID: PMC5511131 DOI: 10.1038/s41598-017-05830-y] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2017] [Accepted: 06/05/2017] [Indexed: 12/22/2022] Open
Abstract
The development of a low cost and highly active alternative to the commercial Pt/C catalysts used in the oxygen reduction reaction (ORR) requires a facile and environmentally-friendly synthesis process to facilitate large-scale production and provide an effective replacement. Transition metals, in conjunction with nitrogen-doped carbon, are among the most promising substitute catalysts because of their high activity, inexpensive composition, and high carbon monoxide tolerance. We prepared a polyaniline-derived Fe-N-C catalyst for oxygen reduction using a facile one-pot process with no additional reagents. This process was carried out by ultrasonicating a mixture containing an iron precursor, an aniline monomer, and carbon black. The half-wave potential of the synthesized Fe-N-C catalyst for the ORR was only 10 mV less than that of a commercial Pt/C catalyst. The optimized Fe-N-C catalyst showed outstanding performance in a practical anion exchange membrane fuel cell (AEMFC), suggesting its potential as an alternative to commercial Pt/C catalysts for the ORR.
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31
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Ono H, Miyake J, Miyatake K. Partially fluorinated and ammonium-functionalized terpolymers: Effect of aliphatic groups on the properties of anion conductive membranes. ACTA ACUST UNITED AC 2017. [DOI: 10.1002/pola.28513] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Hideaki Ono
- Interdisciplinary Graduate School of Medicine and Engineering; University of Yamanashi; 4 Takeda Kofu Yamanashi 400-8510 Japan
| | - Junpei Miyake
- Clean Energy Research Center; University of Yamanashi; 4 Takeda Kofu Yamanashi 400-8510 Japan
| | - Kenji Miyatake
- Clean Energy Research Center; University of Yamanashi; 4 Takeda Kofu Yamanashi 400-8510 Japan
- Fuel Cell Nanomaterials Center; University of Yamanashi; 4 Takeda Kofu Yamanashi 400-8510 Japan
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