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Zhao L, Hou M, Ren K, Yang D, Li F, Yang X, Zhou Y, Zhang D, Liu S, Lei Y, Liang F. Hot-Pressing Enhances Mechanical Strength of PEO Solid Polymer Electrolyte for All-Solid-State Sodium Metal Batteries. SMALL METHODS 2024:e2301579. [PMID: 38433396 DOI: 10.1002/smtd.202301579] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2023] [Revised: 01/09/2024] [Indexed: 03/05/2024]
Abstract
Poly(ethylene oxide) (PEO)-based solid polymer electrolytes (SPEs) are widely utilized in all-solid-state sodium metal batteries (ASSSMBs) due to their excellent flexibility and safety. However, poor ionic conductivity and mechanical strength limit its development. In this work, an emerging solvent-free hot-pressing method is used to prepare mechanically robust PEO-based SPE, while sodium superionic conductors Na3 Zr2 Si2 PO12 (NZSP) and NaClO4 are introduced to improve ionic conductivity. The as-prepared electrolyte exhibits a high ionic conductivity of 4.42 × 10-4 S cm-1 and a suitable electrochemical stability window (4.5 V vs Na/Na+ ). Furthermore, the SPE enables intimate contact with the electrode. The Na||Na3 V2 (PO4 )3 @C ASSSMB delivers a high-capacity retention of 97.1% after 100 cycles at 0.5 C and 60 °C, and exhibits excellent Coulombic efficiency (CE) (close to 100%). The ASSSMB with the 20 µm thick electrolyte also demonstrates excellent cyclic stability. This study provides a promising strategy for designing stable polymer-ceramic composite electrolyte membranes through hot-pressing to realize high-energy-density sodium metal batteries.
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Affiliation(s)
- Lanqing Zhao
- Key Laboratory for Nonferrous Vacuum Metallurgy of Yunnan Province, Kunming University of Science and Technology, Kunming, 650093, China
| | - Minjie Hou
- Key Laboratory for Nonferrous Vacuum Metallurgy of Yunnan Province, Kunming University of Science and Technology, Kunming, 650093, China
| | - Kun Ren
- Key Laboratory for Nonferrous Vacuum Metallurgy of Yunnan Province, Kunming University of Science and Technology, Kunming, 650093, China
| | - Dongrong Yang
- Key Laboratory for Nonferrous Vacuum Metallurgy of Yunnan Province, Kunming University of Science and Technology, Kunming, 650093, China
| | - Fupeng Li
- Key Laboratory for Nonferrous Vacuum Metallurgy of Yunnan Province, Kunming University of Science and Technology, Kunming, 650093, China
| | - Xiecheng Yang
- Key Laboratory for Nonferrous Vacuum Metallurgy of Yunnan Province, Kunming University of Science and Technology, Kunming, 650093, China
| | - Yingjie Zhou
- Key Laboratory for Nonferrous Vacuum Metallurgy of Yunnan Province, Kunming University of Science and Technology, Kunming, 650093, China
| | - Da Zhang
- Key Laboratory for Nonferrous Vacuum Metallurgy of Yunnan Province, Kunming University of Science and Technology, Kunming, 650093, China
- National Engineering Research Center of Vacuum Metallurgy, Kunming University of Science and Technology, Kunming, 650093, China
- Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming, 650093, China
| | - Shan Liu
- School of Chemical Engineering, North China University of Science and Technology, Tangshan, 063009, China
| | - Yong Lei
- Fachgebiet Angewandte Nanophysik, InstitutfürPhysik & IMNMacroNano, Technische Universität Ilmenau, 98693, Ilmenau, Germany
| | - Feng Liang
- Key Laboratory for Nonferrous Vacuum Metallurgy of Yunnan Province, Kunming University of Science and Technology, Kunming, 650093, China
- National Engineering Research Center of Vacuum Metallurgy, Kunming University of Science and Technology, Kunming, 650093, China
- Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming, 650093, China
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Delgado-Rosero MI, Jurado-Meneses NM, Uribe-Kaffure R. Composite Polymer Electrolytes Based on (PEO) 4CF 3COOLi and Multi-Walled Carbon Nanotube (MWCNT). Polymers (Basel) 2022; 15:polym15010049. [PMID: 36616400 PMCID: PMC9824726 DOI: 10.3390/polym15010049] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2022] [Revised: 11/27/2022] [Accepted: 12/01/2022] [Indexed: 12/24/2022] Open
Abstract
The addition of nanoparticles as fillers has a significant influence in modifying the dynamic conditions and avoiding crystallization in polymer composites. In this work, (PEO)4CF3COOLi electrolyte and multi-walled carbon nanotubes (MWCNTs) were used to prepare composites by a solution method. The formation of the new composite was evidenced by the experimental results obtained from DSC analysis and infrared spectroscopy (FTIR). The impedance spectroscopy analysis shows a notable decrease in the resistance, which is attributed to an interaction between the oxygen of the polymer and the Li+ cations of the salt, and the interactions between the electrolyte and the MWNTs. Values of dc conductivity of 8.42 × 10-4 S cm-1 at room temperature are obtained at a concentration of 2.0 wt.% MWCNT in the whole electrolyte. The results indicate that membranes can be used in technological devices such as batteries and gas or moisture sensors.
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Crystalline Phases Thermal Behaviour, Optical Energy Band Gap, and Broadband Radio Wave Frequency Dielectric Properties of PEO/PVDF Blend Films. Macromol Res 2022. [DOI: 10.1007/s13233-022-0052-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Influence of succinonitrile plasticizer on ionic conductivity, structural and dielectric properties of potassium-based PEO/PVdF blend polymer electrolyte. JOURNAL OF POLYMER RESEARCH 2022. [DOI: 10.1007/s10965-022-02912-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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Hadjichristov GB, Vlakhov TE, Marinov YG, Scaramuzza N. Ion-Conducting Flexible Thin Films of Composites from Poly(ethylene oxide) and Nematic Liquid Crystals E8-Characterization by Impedance and Dielectric Relaxation Spectroscopy. Polymers (Basel) 2021; 13:4465. [PMID: 34961015 PMCID: PMC8704298 DOI: 10.3390/polym13244465] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2021] [Revised: 12/03/2021] [Accepted: 12/16/2021] [Indexed: 11/17/2022] Open
Abstract
Complex electrical impedance and dielectric spectroscopy were applied to study the dielectric relaxations and their thermal behavior in ion-conducting composites/complexes from polymer poly(ethylene oxide) (PEO) and E8 nematic liquid crystals (LCs), at the compositional ratio PEO:E8 = 70:30 wt%. Flexible thin films of PEO/E8 with a thickness of 150 μm were inspected, as well as such films from Na+ ion-conducting electrolyte PEO/E8/NaIO4 with the same PEO:E8 compositional ratio, but additionally containing 10 wt.% from the salt sodium metaperiodate (NaIO4) as a dopant of Na+ ions. The molecular dynamics, namely the dielectric relaxation of PEO/E8 and PEO/E8/NaIO4, were characterized through analyses of complex impedance and dielectric spectra measured in the frequency range of 1 Hz-1 MHz, under variation of temperature from below to above the glass-transition temperature of these composites. The relaxation and polarization of dipole formations in PEO/E8 and PEO/E8/NaIO4 were evidenced and compared in terms of both electrical impedance and dielectric response depending on temperature. The results obtained for molecular organization, molecular relaxation dynamics, and electric polarization in the studied ion-conducting polymer/LC composites/complexes can be helpful in the optimization of their structure and performance, and are attractive for applications in flexible organic electronics, energy storage devices, and mechatronics.
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Affiliation(s)
- Georgi B. Hadjichristov
- Georgi Nadjakov Institute of Solid State Physics, Bulgarian Academy of Sciences, 72 Tzarigradsko Chaussee Blvd., 1784 Sofia, Bulgaria; (T.E.V.); (Y.G.M.)
| | - Todor E. Vlakhov
- Georgi Nadjakov Institute of Solid State Physics, Bulgarian Academy of Sciences, 72 Tzarigradsko Chaussee Blvd., 1784 Sofia, Bulgaria; (T.E.V.); (Y.G.M.)
| | - Yordan G. Marinov
- Georgi Nadjakov Institute of Solid State Physics, Bulgarian Academy of Sciences, 72 Tzarigradsko Chaussee Blvd., 1784 Sofia, Bulgaria; (T.E.V.); (Y.G.M.)
| | - Nicola Scaramuzza
- Dipartimento di Fisica, Università degli Studi della Calabria (UNICAL), Via P. Bucci, Cubo 33B, 87036 Rende, Italy;
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Effect of TiO2 Nano-Filler on Electrical Properties of Na+ Ion Conducting PEO/PVDF Based Blended Polymer Electrolyte. J Inorg Organomet Polym Mater 2021. [DOI: 10.1007/s10904-021-01947-w] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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