Abstract
In the present study, we report the synthesis and characterisation of solid polymer electrolytes (SPEs) based on polymer poly(ethylene oxide) (PEO), salt lithium 4,5-dicyano-2-(trifluoromethyl)imidazole (LiTDI) and different amounts of added ionic liquid (IL) 1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide (EMImTFSI) via a solution casting technique, and we investigate the use of these electrolytes in solid-state Li-ion batteries (LIBs). Thermogravimetric analysis (TGA), Fourier transform infrared spectroscopy (FTIR), complex impedance spectroscopy, linear sweep voltammetry (LSV) and electrochemical studies exhibit promising characteristics of the prepared SPEs suitable for application in LIBs. The optimum conducting composition (OCC) PEO20–LiTDI–40 wt% EMImTFSI SPEs shows high thermal stability (i.e., up to 300 °C), high ionic conductivity (∼1.78 × 10−4 S/cm at 60 °C) and a high electrochemical stability window (∼ 4.2 V). The Li/PEO20–LiTDI–40 wt% EMImTFSI/LiFePO4 coin-type cell cycled at 0.1 C shows initial discharge capacity of about 161 mAh g−1, and retains capacity of 144.5 mAh g−1 on the 50th cycle. The above results suggest that PEO20–LiTDI–40 wt% EMImTFSI SPE is a suitable separator for LIBs.
Similar content being viewed by others
Research data policy and data availability statement
The data given in this article will be supported by experimental data in figures and references given in this article.
References
Filho S, Oliveira L, Oliveira R, Faez R, Martins V, Camilo F (2022) Free-standing solid polymer electrolytes based on elastomeric material and ionic liquids for safer lithium-ion battery applications. Solid State Ionic 379:115901
Shahjalal M, Roy PK, Shams T, Fly A, Chowdhury JI, Ahmed MR, Liu K (2022) A review on second-life of Li-ion batteries: prospects, challenges, and issues. Energy 241:122881
Ye F, Liao K, Ran R, Shao Z (2020) Recent advances in filler engineering of polymer electrolytes for solid-state Li-ion batteries: A review. Energy Fuels 34:9189–9207
Yu X, Manthiram A (2021) A review of composite polymer-ceramic electrolytes for lithium batteries. Energy Storage Mater 34:282–300
Polu AR, Rhee HW (2016) Effect of TiO2 nanoparticles on structural, thermal, mechanical and ionic conductivity studies of PEO12–LiTDI solid polymer electrolyte. J Ind Eng Chem 37:347–353
Polu AR, Rhee HW, Reddy MJK, Shanmugharaj AM, Ryu SH, Kim DK (2017) Effect of POSS-PEG hybrid nanoparticles on cycling performance of polyether-LiDFOB based solid polymer electrolytes for all solid-state Li-ion battery applications. J Ind Eng Chem 45:68–77
Polu AR, Rhee HW (2015) Nanocomposite solid polymer electrolytes based on poly(ethylene oxide)/POSS-PEG (n = 13.3) hybrid nanoparticles for lithium ion batteries. J Ind Eng Chem 31:323–329
Polu AR, Kumar R, Rhee HW (2015) Magnesium ion conducting solid polymer blend electrolyte based on biodegradable polymers and application in solid-state batteries. Ionics 21:125–132
Polu AR, Rhee HW (2017) Ionic liquid doped PEO-based solid polymer electrolytes for lithium-ion polymer batteries. Int J Hydrogen Energy 42:7212–7219
Polu AR, Kim DK, Rhee HW (2015) Poly(ethylene oxide)-lithium difluoro (oxalato) borate new solid polymer electrolytes: ion–polymer interaction, structural, thermal, and ionic conductivity studies. Ionics 21:2771–2780
Berhaut CL, Dedryvere R, Timperman L, Schmidt G, Lemordant D, Anouti M (2019) A new solvent mixture for use of LiTDI as electrolyte salt in Li-ion batteries. Electrochim Acta 305:534–546
Polu AR, Rhee HW, Kim DK (2015) New solid polymer electrolytes (PEO20–LiTDI–SN) for lithium batteries: structural, thermal and ionic conductivity studies. J Mater Sci: Mater Electron 26:8548–8554
Forsyth M, Porcarelli L, Wang X, Goujon N, Mecerretes D (2019) Innovative electrolytes based on ionic liquids and polymers for next-generation solid-state batteries. Acc Chem Res 52:686–694
Yang G, Song Y, Wang Q, Zhang L, Deng L (2020) Review of ionic liquids containing, polymer/inorganic hybrid electrolytes for lithium metal batteries. Mater Design 190:108563
Zhang Y, Huo QY, Du PP, Wang LZ, Zhang AQ, Song YH, Lv Y, Li GY (2012) Advances in new cathode material LiFePO4 for lithium-ion batteries. Synthetic Met 162:1315–1326
Ali NM, Kareem AA, Polu AR (2022) Effect of glycerin on electrical and thermal properties of PVA/copper sulphate gel polymer electrolytes. J Inorg Organomet Polym Mater 32:4070–4076
Rajendran S, Kannan R, Mahendran O (2001) Ionic conductivity studies in poly(methylmethacrylate)–polyethlene oxide hybrid polymer electrolytes with lithium salts. J Power Sources 96:406–410
Ramesh S, Yuen TF, Shen CJ (2008) Conductivity and FTIR studies on PEO–LiX [X: CF3SO3−, SO42−] polymer electrolytes. Spectrochim Acta Part A 69:670–675
Tang Z, Wang J, Chen Q, He W, Shen C, Mao XX, Zhang J (2007) A novel PEO-based composite polymer electrolyte with absorptive glass mat for Li-ion batteries. Electrochim Acta 52:6638–6643
Sundar M, Selladurai S (2006) Effect of fillers on magnesium–poly(ethylene oxide) solid polymer electrolyte. Ionics 12:281–286
Niedzicki L, Zukowska GZ, Bukowska M, Szczecinski P, Grugeon S, Laruelle S, Armand M, Panero S, Scrosati B, Marcinek M, Wieczorek W (2010) New type of imidazole-based salts designed specifically for lithium-ion batteries. Electrochim Acta 55:1450–1454
Frech R, Chintapalli S, Bruce PG, Vincent CA (1999) Crystalline and Amorphous Phases in the Poly(ethylene oxide)−LiCF3SO3 System. Macromolecules 32:808–813
Ibrahim S, Yassin MM, Ahmad R, Johan MR (2011) Effects of various LiPF6 salt concentrations on PEO-based solid polymer electrolytes. Ionics 17:399–405
Chaurasia SK, Singh RK, Chandra S (2011) Dielectric relaxation and conductivity studies on (PEO: LiClO4) polymer electrolyte with added ionic liquid [BMIM][PF6]: Evidence of ion–ion interaction. J Polym Sci Part B Polym Phys 49:291–300
Kumar Y, Hashmi SA, Pandey GP (2011) Ionic liquid mediated magnesium ion conduction in poly(ethylene oxide) based polymer electrolyte. Electrochim Acta 56:3864–3873
Kiefer J, Fries J, Leipertz A (2007) Experimental vibrational study of imidazolium-based ionic liquids: Raman and infrared spectra of 1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide and 1-ethyl-3-methylimidazolium ethylsulfate. Appl Spectrosc 61:1306–1311
Jeyapandian M, Lavina S, Thayumanasundaram S, Ohno H, Negro E, Noto VD (2010) New hybrid inorganic–organic polymer electrolytes based on Zr(O(CH2)3CH3)4, glycerol and EMIm-TFSI ionic liquid. J Power Sources 195:341–353
Vadhva P, Hu J, Johnson MJ, Stocker R, Braglia M, Brett DJL, Rettie AJE (2021) Electrochemical impedance spectroscopy for all-solid-state batteries: Theory, methods and future outlook. Chem Electro Chem 8:1930–1947
Liu P, Counihan MJ, Zhu Y, Connel JG, Sharon D, Patel SN, Redfern PC, Zapol P, Markovic NM, Nealey PF, Curtiss LA, Tepavcevic S (2022) Increasing ionic conductivity of poly(ethylene oxide) by reaction with Metallic Li. Adv Energy Sustain Res 3:2100142
Polu AR, Rhee HW (2016) The effects of LiTDI salt and POSS-PEG (n = 4) hybrid nanoparticles on crystallinity and ionic conductivity of PEO based solid polymer electrolytes. Sci Adv Mater 8:931–940
Vries HD, Jeong S, Passerini S (2015) Ternary polymer electrolytes incorporating pyrrolidinium-imide ionic liquids. RSC Adv 5:13598–13606
Singh PK, Kim KW, Rhee HW (2008) Electrical, optical and photoelectrochemical studies on a solid PEO-polymer electrolyte doped with low viscosity ionic liquid. Electrochem Commun 10:1769–1772
Shin JH, Henderson WA, Scaccia S, Prosini PP, Passerini S (2006) Solid-state Li/LiFePO4 polymer electrolyte batteries incorporating an ionic liquid cycled at 40 °C. J Power Sources 156:560–566
Lago N, Calvo OG, Amo JMLD, Rojo T, Armand M (2015) All-solid-state lithium-ion batteries with grafted ceramic nanoparticles dispersed in solid polymer electrolytes. Chem Sus Chem 8:3039–3043
Kim DG, Shim J, Lee JH, Kwon SJ, Baik JH, Lee JC (2013) Preparation of solid-state composite electrolytes based on organic/inorganic hybrid star-shaped polymer and PEG-functionalized POSS for all-solid-state lithium battery applications. Polymer 54:5812–5820
He R, Echeverri M, Ward D, Zhu Y, Kyu T (2016) Highly conductive solvent-free polymer electrolyte membrane for lithium-ion batteries: Effect of prepolymer molecular weight. J Membr Sci 498:208–217
Pohl B, Hiller MM, Seidel SM, Grunebaum M, Wiemhofer HD (2015) Nitrile functionalized disiloxanes with dissolved LiTFSI as lithium-ion electrolytes with high thermal and electrochemical stability. J Power Sources 274:629–635
Zhao Y, Wu C, Peng G, Chen X, Yao X, Bai Y, Wu F, Chen S, Xu X (2016) A new solid polymer electrolyte incorporating Li10GeP2S12 into a polyethylene oxide matrix for all-solid-state lithium batteries. J Power Sources 301:7–53
Abdulnabi RJ, Kareem AA (2022) Fabrication and characterization of high-performance crosslinked PVA/PMDA doped with H2SO4. Iraqi J Sci 63:2006–2016
Ali NM, Kareem AA (2022) Ionic conductivity enhancement for PVA/20wt.% CuSO4 gel polymer electrolyte by using glycerine. Chalcogenide Lett 19:217–225
Hasan AA (2019) A.C conductivity and dielectric properties of (PVA/PEO) blends doped with MWCNTs. Iraqi J Phy 14:64–72
Author information
Authors and Affiliations
Corresponding author
Ethics declarations
Conflicts of interest
The authors declare no conflict of interest.
Additional information
Publisher's Note
Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.
Supplementary Information
Below is the link to the electronic supplementary material.
Rights and permissions
Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
About this article
Cite this article
Polu, A.R., Kareem, A.A. & Rasheed, H.K. Thermal, electrical and electrochemical properties of ionic liquid-doped poly(ethylene oxide)–LiTDI polymer electrolytes for Li-ion batteries. J Solid State Electrochem 27, 409–416 (2023). https://doi.org/10.1007/s10008-022-05333-5
Received:
Revised:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s10008-022-05333-5