Propylene carbonate-nitrile solvent blends for thermally stable gel polymer lithium ion battery electrolytes

Krause, Christian; Röring, Philipp; Onishi, Hitoshi; Diddens, Diddo; Thienenkamp, Johannes Helmut; Brunklaus, Gunther; Winter, Martin; Cekic‐Laskovic, Isidora

doi:10.1016/j.jpowsour.2020.229047

Cited by 17 publications

(8 citation statements)

References 83 publications

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“…Gel‐type electrolytes are mixtures of a polymer and liquid organic electrolyte. Common composition include PEO, [ 102 ] polymethyl methacrylate (PMMA), [ 103 ] poly(vinylidene fluoride‐co‐hexafluoropropylene) (PVDF‐HFP), [ 104 ] among many others. The gel formed with two components has excellent contact with cell components due to its high mechanical flexibility.…”

Section: Strategies For High Temperature Electrolyte Designmentioning

confidence: 99%

Electrolyte Design for Lithium Metal Anode‐Based Batteries Toward Extreme Temperature Application

et al. 2021

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Lithium anode-based batteries (LBs) are highly demanded in society owing to the high theoretical capacity and low reduction potential of metallic lithium. They are expected to see increasing deployment in performance critical areas including electric vehicles, grid storage, space, and sea vehicle operations. Unfortunately, competitive performance cannot be achieved when LBs operating under extreme temperature conditions where the lithium-ion chemistry fail to perform optimally. In this review, a brief overview of the challenges in developing LBs for low temperature (<0°C) and high temperature (>60°C) operation are provided followed by electrolyte design strategies involving Li salt modification, solvation structure optimization, additive introduction, and solid-state electrolyte utilization for LBs are introduced. Specifically, the prospects of using lithium metal batteries (LMBs), lithium sulfur (Li-S) batteries, and lithium oxygen (Li-O 2 ) batteries for performance under low and high temperature applications are evaluated. These three chemistries are presented as prototypical examples of how the conventional low temperature charge transfer resistances and high temperature side reactions can be overcome. This review also points out the research direction of extreme temperature electrolyte design toward practical applications.

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Section: Strategies For High Temperature Electrolyte Designmentioning

confidence: 99%

Electrolyte Design for Lithium Metal Anode‐Based Batteries Toward Extreme Temperature Application

et al. 2021

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“…Gel polymer electrolytes based on PVDF-HFP-containing propylene carbonate, isobutyronitrile (IBN), and trimethyl acetonitrile (TMAN) solvent blend electrolytes were developed. Electrochemical impedance spectroscopy, PFG NMR, and relative permittivity determination revealed remarkable ion-conducting properties of IBN and TMAN solvents [39]. Spin-lattice relaxation times (T 1 ) and self-diffusion coefficients of 7 Li and 19 F were measured in the gel polymer electrolytes based on a polyacrylonitrile elastomer.…”

Section: Nmr In Polymer Gel Electrolytesmentioning

confidence: 99%

“…The main direction of investigations is lithium cation surroundings, local and macroscopic mobilities of Li + and F − -containing fragments, and electrolyte composition-ion transport correlations. Modern and complicated NMR techniques are employed, especially solid-state high resolution magic angle spinning (MAS) NMR, pulsed-field gradient NMR, and NMR spin relaxation [13,29,[32][33][34]37,39,40,42,47,[49][50][51][52][53][54][56][57][58][59][60][61]65,72,73,76,77,80,92,.…”

Section: Nmr Study Of Polymer Electrolytesmentioning

confidence: 99%

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Polymer Electrolytes for Lithium-Ion Batteries Studied by NMR Techniques

et al. 2022

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This review is devoted to different types of novel polymer electrolytes for lithium power sources developed during the last decade. In the first part, the compositions and conductivity of various polymer electrolytes are considered. The second part contains NMR applications to the ion transport mechanism. Polymer electrolytes prevail over liquid electrolytes because of their exploitation safety and wider working temperature ranges. The gel electrolytes are mainly attractive. The systems based on polyethylene oxide, poly(vinylidene fluoride-co-hexafluoropropylene), poly(ethylene glycol) diacrylate, etc., modified by nanoparticle (TiO2, SiO2, etc.) additives and ionic liquids are considered in detail. NMR techniques such as high-resolution NMR, solid-state NMR, magic angle spinning (MAS) NMR, NMR relaxation, and pulsed-field gradient NMR applications are discussed. 1H, 7Li, and 19F NMR methods applied to polymer electrolytes are considered. Primary attention is given to the revelation of the ion transport mechanism. A nanochannel structure, compositions of ion complexes, and mobilities of cations and anions studied by NMR, quantum-chemical, and ionic conductivity methods are discussed.

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“…Even though many polymer electrolytes have been introduced, − poly(ethylene oxide) (PEO) as the ion-conducting matrix for alkali metal salts is among the most utilized polymer electrolytes, for which extensive studies have been conducted. − PEO affords good chain flexibility, low T g , remarkable electrochemical stability against lithium metal, and great solubility for conductive lithium salts, but it still suffers from low ionic conductivities of 10 –5 to 10 –1 mS cm –1 at temperatures below its melting point (∼65 °C) . Nevertheless, its potential for solid-state battery applications in electric vehicles was successfully demonstrated by Bolloré, introducing the lithium metal polymer (LMP) battery technology to the markets in 2011, and to date, more than 8000 vehicles are operated based on the LMP technology, illustrating that PEO and variants thereof are not only of contemporary interest but also practically extremely relevant. , …”

Section: Introductionmentioning

confidence: 99%

A Systematic Study of Vinyl Ether-Based Poly(Ethylene Oxide) Side-Chain Polymer Electrolytes

Butzelaar

Liu

Röring

et al. 2021

ACS Appl. Polym. Mater.

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Herein, we report on the synthesis of a systematic library of vinyl ether-based poly(ethylene oxide) (PEO) side-chain copolymers in order to reduce the crystallization of PEO. The influence of different grafted PEO side chain lengths, the grafting density, and the [Li+]:[EO] ratio after mixing with LiTFSI on the glass transition temperature (T g), the crystallinity, and the resulting ionic conductivity was examined. Copolymers bearing longer PEO side chains and higher grafting densities show higher crystallization tendencies while their T g is reduced at the same time. Furthermore, the addition of LiTFSI reduces crystallization but increases T g. Because these effects are directly impacting the ionic conductivity, we demonstrate that the different parameters need to be carefully adjusted in order to balance their influence. In this way, a fundamental view that shows the potential of PEO side-chain copolymers for their applications as polymer electrolytes is provided.

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Propylene carbonate-nitrile solvent blends for thermally stable gel polymer lithium ion battery electrolytes

Cited by 17 publications

References 83 publications

Electrolyte Design for Lithium Metal Anode‐Based Batteries Toward Extreme Temperature Application

Electrolyte Design for Lithium Metal Anode‐Based Batteries Toward Extreme Temperature Application

Polymer Electrolytes for Lithium-Ion Batteries Studied by NMR Techniques

A Systematic Study of Vinyl Ether-Based Poly(Ethylene Oxide) Side-Chain Polymer Electrolytes

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