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Park EJ, Jannasch P, Miyatake K, Bae C, Noonan K, Fujimoto C, Holdcroft S, Varcoe JR, Henkensmeier D, Guiver MD, Kim YS. Aryl ether-free polymer electrolytes for electrochemical and energy devices. Chem Soc Rev 2024; 53:5704-5780. [PMID: 38666439 DOI: 10.1039/d3cs00186e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/05/2024]
Abstract
Anion exchange polymers (AEPs) play a crucial role in green hydrogen production through anion exchange membrane water electrolysis. The chemical stability of AEPs is paramount for stable system operation in electrolysers and other electrochemical devices. Given the instability of aryl ether-containing AEPs under high pH conditions, recent research has focused on quaternized aryl ether-free variants. The primary goal of this review is to provide a greater depth of knowledge on the synthesis of aryl ether-free AEPs targeted for electrochemical devices. Synthetic pathways that yield polyaromatic AEPs include acid-catalysed polyhydroxyalkylation, metal-promoted coupling reactions, ionene synthesis via nucleophilic substitution, alkylation of polybenzimidazole, and Diels-Alder polymerization. Polyolefinic AEPs are prepared through addition polymerization, ring-opening metathesis, radiation grafting reactions, and anionic polymerization. Discussions cover structure-property-performance relationships of AEPs in fuel cells, redox flow batteries, and water and CO2 electrolysers, along with the current status of scale-up synthesis and commercialization.
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Affiliation(s)
- Eun Joo Park
- Los Alamos National Laboratory, Los Alamos, NM 87545, USA.
| | | | - Kenji Miyatake
- University of Yamanashi, Kofu 400-8510, Japan
- Waseda University, Tokyo 169-8555, Japan
| | - Chulsung Bae
- Rensselaer Polytechnic Institute, Troy, NY 12180, USA
| | - Kevin Noonan
- Carnegie Mellon University, Pittsburgh, PA 15213, USA
| | - Cy Fujimoto
- Sandia National Laboratories, Albuquerque, NM 87123, USA
| | | | | | - Dirk Henkensmeier
- Korea Institute of Science and Technology (KIST), Seoul 02792, South Korea
- KIST School, University of Science and Technology (UST), Seoul 02792, South Korea
- KU-KIST School, Korea University, Seoul 02841, South Korea
| | - Michael D Guiver
- State Key Laboratory of Engines, Tianjin University, Tianjin 300072, China.
| | - Yu Seung Kim
- Los Alamos National Laboratory, Los Alamos, NM 87545, USA.
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Sims SM, Brown H, Hunter JR, Johnson RD, Whittaker RE, Miller KM. PAEK- and PES-like perarylated phosphonium ionenes: Synthesis, thermal properties, and conductivity. POLYMER 2023. [DOI: 10.1016/j.polymer.2023.125793] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/22/2023]
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Tuning conformational structures of imidazolium ionenes with 1-ethyl-3-methylimidazolium ionic liquid solvents. Chem Eng Sci 2022. [DOI: 10.1016/j.ces.2022.117456] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Barbosa GD, Turner CH. Martini Coarse-Grained Model for Poly(alkylimidazolium) Ionenes and Applications in Aromatic Compound Extraction. Macromolecules 2021. [DOI: 10.1021/acs.macromol.1c01932] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Gabriel D. Barbosa
- Department of Chemical and Biological Engineering, The University of Alabama, Tuscaloosa, Alabama 35487, United States
| | - C. Heath Turner
- Department of Chemical and Biological Engineering, The University of Alabama, Tuscaloosa, Alabama 35487, United States
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Lindenmeyer KM, Miller KM. Thiol‐yne photoclick polymerization as a method for preparing
imidazolium‐containing
ionene networks. JOURNAL OF POLYMER SCIENCE 2021. [DOI: 10.1002/pol.20210629] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
| | - Kevin M. Miller
- Department of Chemistry Murray State University Murray Kentucky USA
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O’Harra KE, DeVriese EM, Turflinger EM, Noll DM, Bara JE. Design and Gas Separation Performance of Imidazolium Poly(ILs) Containing Multivalent Imidazolium Fillers and Crosslinking Agents. Polymers (Basel) 2021; 13:polym13091388. [PMID: 33923351 PMCID: PMC8123196 DOI: 10.3390/polym13091388] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Revised: 04/20/2021] [Accepted: 04/21/2021] [Indexed: 11/16/2022] Open
Abstract
This work introduces a series of vinyl-imidazolium-based polyelectrolyte composites, which were structurally modified via impregnation with multivalent imidazolium-benzene ionic liquids (ILs) or crosslinked with novel cationic crosslinkers which possess internal imidazolium cations and vinylimidazolium cations at the periphery. A set of eight [C4vim][Tf2N]-based membranes were prepared via UV-initiated free radical polymerization, including four composites containing di-, tri-, tetra-, and hexa-imidazolium benzene ILs and four crosslinked derivatives which utilized tri- and tetra- vinylimidazolium benzene crosslinking agents. Structural and functional characterizations were performed, and pure gas permeation data were collected to better understand the effects of “free” ILs dispersed in the polymeric matrix versus integrated ionic crosslinks on the transport behaviors of these thin films. These imidazolium PIL:IL composites exhibited moderately high CO2 permeabilities (~20–40 Barrer), a 4–7× increase relative to corresponding neat PIL, with excellent selectivities against N2 or CH4. The addition of imidazolium-benzene fillers with increased imidazolium content were shown to correspondingly enhance CO2 solubility (di- < tri- < tetra- < hexa-), with the [C4vim][Tf2N]: [Hexa(Im+)Benz ][Tf2N] composite showing the highest CO2 permeability (PCO2 = 38.4 Barrer), while maintaining modest selectivities (αCO2/CH4 = 20.2, αCO2/N2 = 23.6). Additionally, these metrics were similarly improved with the integration of more ionic content bonded to the polymeric matrix; increased PCO2 with increased wt% of the tri- and tetra-vinylimidazolium benzene crosslinking agent was observed. This study demonstrates the intriguing interactions and effects of ionic additives or crosslinkers within a PIL matrix, revealing the potential for the tuning of the properties and transport behaviors of ionic polymers using ionic liquid-inspired small molecules.
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Sappidi P, Liu X, O’Harra KE, Bara JE, Turner CH. How Do Ionic Liquids “Fold” Ionenes? Computational and Experimental Analysis of Imidazolium Polymers Based on Ether and Alkyl Chain Variations Dissolved in an Ionic Liquid. Macromolecules 2021. [DOI: 10.1021/acs.macromol.0c02604] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Praveenkumar Sappidi
- Department of Chemical and Biological Engineering, The University of Alabama, Tuscaloosa, Alabama 35487, United States
| | - Xiaoyang Liu
- Department of Chemical and Biological Engineering, The University of Alabama, Tuscaloosa, Alabama 35487, United States
| | - Kathryn E. O’Harra
- Department of Chemical and Biological Engineering, The University of Alabama, Tuscaloosa, Alabama 35487, United States
| | - Jason E. Bara
- Department of Chemical and Biological Engineering, The University of Alabama, Tuscaloosa, Alabama 35487, United States
| | - C. Heath Turner
- Department of Chemical and Biological Engineering, The University of Alabama, Tuscaloosa, Alabama 35487, United States
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