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Xia DL, Ding SP, Ye Z, Yang C, Xu JT. Poly(ethylene oxide)- and Polyzwitterion-Based Thermoplastic Elastomers for Solid Electrolytes. MATERIALS (BASEL, SWITZERLAND) 2024; 17:2145. [PMID: 38730953 PMCID: PMC11085580 DOI: 10.3390/ma17092145] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2024] [Revised: 04/30/2024] [Accepted: 04/30/2024] [Indexed: 05/13/2024]
Abstract
In this article, ABA triblock copolymer (tri-BCP) thermoplastic elastomers with poly(ethylene oxide) (PEO) middle block and polyzwitterionic poly(4-vinylpyridine) propane-1-sulfonate (PVPS) outer blocks were synthesized. The PVPS-b-PEO-b-PVPS tri-BCPs were doped with lithium bis-(trifluoromethane-sulfonyl) imide (LiTFSI) and used as solid polyelectrolytes (SPEs). The thermal properties and microphase separation behavior of the tri-BCP/LiTFSI hybrids were studied. Small-angle X-ray scattering (SAXS) results revealed that all tri-BCPs formed asymmetric lamellar structures in the range of PVPS volume fractions from 12.9% to 26.1%. The microphase separation strength was enhanced with increasing the PVPS fraction (fPVPS) but was weakened as the doping ratio increased, which affected the thermal properties of the hybrids, such as melting temperature and glass transition temperature, to some extent. As compared with the PEO/LiTFSI hybrids, the PVPS-b-PEO-b-PVPS/LiTFSI hybrids could achieve both higher modulus and higher ionic conductivity, which were attributed to the physical crosslinking and the assistance in dissociation of Li+ ions by the PVPS blocks, respectively. On the basis of excellent electrical and mechanical performances, the PVPS-b-PEO-b-PVPS/LiTFSI hybrids can potentially be used as solid electrolytes in lithium-ion batteries.
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Affiliation(s)
| | | | | | | | - Jun-Ting Xu
- National Key Laboratory of Biobased Transportation Fuel Technology, International Research Center for X Polymers, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310058, China; (D.-L.X.); (S.-P.D.); (Z.Y.); (C.Y.)
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Yoshizawa-Fujita M, Ohno H. Applications of Zwitterions and Zwitterionic Polymers for Li-Ion Batteries. CHEM REC 2023; 23:e202200287. [PMID: 36782072 DOI: 10.1002/tcr.202200287] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2022] [Revised: 01/24/2023] [Indexed: 02/15/2023]
Abstract
A zwitterion is a neutral compound that has both a cation and an anion in the same molecule. Quaternary ammonium cations are frequently used for zwitterions. Zwitterions with quaternary ammonium cations are also common in biological molecules, such as phospholipids, which are the main components of cell membranes. Chemically, they have broad applicability because they are dielectric, non-volatile, and highly polar compounds with a large dipole moment. In addition, after salt addition, ion exchange does not occur in the presence of zwitterions. Owing to these characteristics, zwitterions have been applied as novel electrolyte materials targeting high ionic conductivity. In this review, application of zwitterions and their polymers for Li-ion batteries is addressed.
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Affiliation(s)
- Masahiro Yoshizawa-Fujita
- Department of Materials and Life Sciences, Sophia University, 7-1 Kioi-cho, Chiyoda-ku, Tokyo, 102-8554, Japan
| | - Hiroyuki Ohno
- Department of Biotechnology, Tokyo University of Agriculture and Technology, 2-24-16 Naka-cho, Koganei, Tokyo, 184-8588, Japan
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Zhang ZK, Ding SP, Ye Z, Xia DL, Xu JT. PEO-Based Block Copolymer Electrolytes Containing Double Conductive Phases with Improved Mechanical and Electrochemical Properties. MATERIALS (BASEL, SWITZERLAND) 2022; 15:7930. [PMID: 36431415 PMCID: PMC9699265 DOI: 10.3390/ma15227930] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/16/2022] [Revised: 11/05/2022] [Accepted: 11/07/2022] [Indexed: 06/16/2023]
Abstract
In this work, the advanced all solid-state block copolymer electrolytes (SBCPEs) for lithium-ion batteries with double conductive phases, poly(ethylene oxide)-b-poly(trimethyl-N-((2-(dimethylamino)ethyl methacrylate)-7-propyl)-ammonium bis(trifluoromethanesulfonyl) imide) (PEO-b-PDM-dTFSI)/LiTFSI, were fabricated, in which the charged PDM-dTFSI block contained double quaternary ammonium cations and the PEO block was doped with LiTFSI. The disordered (DIS) and ordered lamellae (LAM) phase structures were achieved by adjusting the composition of the block copolymer and the doping ratio r. In addition, the presence of the hard PDM-dTFSI block and the formation of the LAM phase structure resulted in a good mechanical strength of the solid PEO-b-PDM-dTFSI/LiTFSI electrolyte, and it could maintain a high level of 104 Pa at 100 °C, which was around 10,000 times stronger than that of the PEO/LiTFSI electrolyte. Based on the good mechanical and electrochemical properties, the PEO-b-PDM-dTFSI/LiTFSI SBCPE exhibited excellent long-term galvanostatic cycle performance, indicating the strong ability to suppress lithium dendrites.
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Progress on High Voltage PEO-based Polymer Solid Electrolytes in Lithium Batteries. Chem Res Chin Univ 2022. [DOI: 10.1007/s40242-022-2065-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Yoshizawa‐Fujita M, Ota R, Ishii J, Takeoka Y, Rikukawa M. Ion Conductive Behavior of Oligoether/Zwitterion Diblock Copolymers Containing Magnesium Salt. MACROMOL CHEM PHYS 2021. [DOI: 10.1002/macp.202100363] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Masahiro Yoshizawa‐Fujita
- Department of Materials and Life Sciences Sophia University 7‐1 Kioi‐cho, Chiyoda‐ku Tokyo 102‐8554 Japan
| | - Ryoma Ota
- Department of Materials and Life Sciences Sophia University 7‐1 Kioi‐cho, Chiyoda‐ku Tokyo 102‐8554 Japan
| | - Jun Ishii
- Department of Materials and Life Sciences Sophia University 7‐1 Kioi‐cho, Chiyoda‐ku Tokyo 102‐8554 Japan
| | - Yuko Takeoka
- Department of Materials and Life Sciences Sophia University 7‐1 Kioi‐cho, Chiyoda‐ku Tokyo 102‐8554 Japan
| | - Masahiro Rikukawa
- Department of Materials and Life Sciences Sophia University 7‐1 Kioi‐cho, Chiyoda‐ku Tokyo 102‐8554 Japan
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Yokokoji A, Kitayama W, Wichai K, Urakawa O, Matsumoto A, Vao-Soongnern V, Inoue T. Viscoelastic Relaxation of Polymerized Ionic Liquid and Lithium Salt Mixtures: Effect of Salt Concentration. Polymers (Basel) 2021; 13:polym13111772. [PMID: 34071398 PMCID: PMC8199314 DOI: 10.3390/polym13111772] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Revised: 05/23/2021] [Accepted: 05/23/2021] [Indexed: 01/10/2023] Open
Abstract
Polymerized ionic liquids (PILs) doped with lithium salts have recently attracted research interests as the polymer component in lithium-ion batteries because of their high ionic mobilities and lithium-ion transference numbers. To date, although the ion transport mechanism in lithium-doped PILs has been considerably studied, the role of lithium salts on the dynamics of PIL chains remains poorly understood. Herein, we examine the thermal and rheological behaviors of the mixture of poly(1-butyl-3-vinylimidazolium bis(trifluoromethanesulfonyl)imide (PC4-TFSI)/lithium TFSI (LiTFSI) in order to clarify the effect of the addition of LiTFSI. We show that the glass transition temperature Tg and the entanglement density decrease with the increase in LiTFSI concentration wLiTFSI. These results indicate that LiTFSI acts as a plasticizer for PC4-TFSI. Comparison of the frequency dependence of the complex modulus under the iso-frictional condition reveals that the addition of LiTFSI does not modify the stress relaxation mechanism of PC4-TFSI, including its characteristic time scale. This suggests that the doped LiTFSI, component that can be carrier ions, is not so firmly bound to the polymer chain as it modifies the chain dynamics. In addition, a broadening of the loss modulus spectrum in the glass region occurs at high wLiTFSI. This change in the spectrum can be caused by the responses of free TFSI and/or coordination complexes of Li and TFSI. Our detailed rheological analysis can extract the information of the dynamical features for PIL/salt mixtures and may provide helpful knowledge for the control of mechanical properties and ion mobilities in PILs.
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Affiliation(s)
- Arisa Yokokoji
- Department of Macromolecular Science, Graduate School of Science, Osaka University, 1-1 Machikaneyama-cho, Toyonaka, Osaka 560-0043, Japan; (A.Y.); (W.K.); (K.W.)
| | - Wakana Kitayama
- Department of Macromolecular Science, Graduate School of Science, Osaka University, 1-1 Machikaneyama-cho, Toyonaka, Osaka 560-0043, Japan; (A.Y.); (W.K.); (K.W.)
| | - Kamonthira Wichai
- Department of Macromolecular Science, Graduate School of Science, Osaka University, 1-1 Machikaneyama-cho, Toyonaka, Osaka 560-0043, Japan; (A.Y.); (W.K.); (K.W.)
- School of Chemistry, Institute of Science, Suranaree University of Technology, Nakon Ratchasima 30000, Thailand;
| | - Osamu Urakawa
- Department of Macromolecular Science, Graduate School of Science, Osaka University, 1-1 Machikaneyama-cho, Toyonaka, Osaka 560-0043, Japan; (A.Y.); (W.K.); (K.W.)
- Correspondence: (O.U.); (T.I.)
| | - Atsushi Matsumoto
- Department of Applied Chemistry and Biotechnology, University of Fukui, 3-9-1 Bunkyo, Fukui-shi, Fukui 910-8507, Japan;
| | - Visit Vao-Soongnern
- School of Chemistry, Institute of Science, Suranaree University of Technology, Nakon Ratchasima 30000, Thailand;
| | - Tadashi Inoue
- Department of Macromolecular Science, Graduate School of Science, Osaka University, 1-1 Machikaneyama-cho, Toyonaka, Osaka 560-0043, Japan; (A.Y.); (W.K.); (K.W.)
- Correspondence: (O.U.); (T.I.)
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