Recent progress in poly(ethylene oxide)‐based solid‐state electrolytes for lithium‐ion batteries

Lee, Jiyoung; Kim, Byeong Su

doi:10.1002/bkcs.12767

Cited by 8 publications

(1 citation statement)

References 76 publications

(130 reference statements)

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“…PILs are polymers that incorporate an ionic salt structure where either an anion or cation structure is covalently linked to the polymer backbone, and the types and combinations of cations and anions, as well as chemical structures,, can be varied to obtain the desired characteristics. PILs offer high ionic density, leading to the development of flexible polyelectrolyte materials that exhibit high ionic conductivity and low glass transition temperature ( T g ) properties. − Researchers have reported on the use of these PILs materials in solar cells, , fuel cells, and lithium ion batteries. − …”

Section: Introductionmentioning

confidence: 99%

Cyclic Ammonium-Based Polyester Ionenes: Chemical Structures and Properties for Electrochemical Applications

Shin,

Lee,

Shim

et al. 2023

ACS Appl. Polym. Mater.

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Cyclic ammonium-based polyester ionenes have been synthesized through condensation polymerizations of dihydroxyl ionic salts and terephthaloyl chloride monomers. The study investigates the thermal and electrochemical properties of the ionenes, including thermal stability, glass transition temperature, and ionic conductivity, based on their structure−property relationship. The ionenes were made with various combinations of cyclic ammonium (pyrrolidinium or piperidinium), C 11 -terephthalate-C 1 1 or C 6 -terephthalate-C 6 , spacer, and bis-(trifluoromethanesulfonyl)imide (Tf 2 N − ) or hexafluorophosphate (PF 6 − ) anions. The most polyester ionenes were found to be amorphous, transparent, and flexible at room temperature. The ionenes with C 11 -pyrrolidinium Tf 2 N − (11a-Tf 2 N) exhibit the lowest glass transition temperature (−10 °C) and the highest ionic conductivity (2.34 × 10 −5 S/cm) at 70 °C. They also demonstrate good electrochemical stability up to 4.3 V (vs Li/Li + ) and are very comparable to the conventional liquid electrolyte. Moreover, the composite mixture of 11a-Tf 2 N ionene and 50 wt % LiTf 2 N salt exhibits a higher ionic conductivity of 1.41 × 10 −5 S/ cm at room temperature than those of the composite mixtures of 10, 30, and 70 wt % of LiTf 2 N. These findings suggest that the synthesized polyester ionenes can be applicable in future lithium secondary batteries as an additive of liquid or quasi-solid electrolytes or as a component of flexible polymer electrolyte systems.

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Section: Introductionmentioning

confidence: 99%

Cyclic Ammonium-Based Polyester Ionenes: Chemical Structures and Properties for Electrochemical Applications

Shin,

Lee,

Shim

et al. 2023

ACS Appl. Polym. Mater.

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Covalently attached phosphonic acid‐Si₂O₃‐PEO polymer membranes for PEMFC applications

Gilbert,

Stankovic,

Galaffu

et al. 2024

J of Applied Polymer Sci

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In the context of growing interest in phosphonic acid proton exchange membranes (PEMs) for fuel cell applications, we report on new PEMs containing low‐cost polyethylene oxide (PEO) covalently linked by siloxane bonds, SiOSi, to phosphonic acid (PA). Key chemistry in the formation of these membranes involves hydrolysis and condensation reactions of triethoxysilyl propyl capped PEO and pre‐hydrolyzed dimethyl phosphonatoethyltrimethoxysilane (DMPTMS) giving PEO‐Si2O3‐PA and cross‐linked chain PEO‐Si2O3‐PEO organosilsesquioxane components. The Si2O3 can enhance membrane thermal and mechanical properties. The membrane formulations were varied by (a) reagent ratios (b) PEO molecular weights or using polypropylene oxide (PPO) (c) incorporating chain extending groups methylene diphenyl diisocyanate (MDI) or hexamethylene diisocyanate (HDI). These variations provided five membrane families, one of which afforded a complete group of robust membranes with weight% x of PA, PAx in range PA0–PA33. These were studied using ATR‐FTIR, dry membrane water uptake capacity, ion exchange capacity (IEC), and conductivity from room temperature to 120°C at 100% relative humidity. Conductivity increased with PAx reaching 15 mS cm−1 at 120°C, activation energy 0.1 eV, for membrane PA33 for which thermogravimetric analysis (TGA), differential scanning calorimetry (DSC), scanning electron microscopy (SEM), and energy dispersive X‐ray analysis (EDAX) are reported. A comparative performance of the five membrane families is presented.

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Interfacial challenges and recent advances of solid‐state lithium metal batteries

Jeong,

Yun,

Lee

2024

Bulletin Korean Chem Soc

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Growing market demands on portable electronics, electric vehicles, and energy storage system calls for the development of high‐energy density lithium (Li) batteries. Li metal is considered as a promising anode material owing to their high capacity and low electrochemical potential. However, high reactivity of Li metal with conventional flammable liquid electrolytes easily forms Li dendrites, which may cause short‐circuit and even catching fire, obstructing the wide application of Li metal batteries. Although non−/less‐flammable solid electrolytes have replaced the conventional liquid electrolytes, solid‐state Li metal batteries (SSLMBs) suffer from lower Li+ conductivities, chemical/electrochemical incompatibilities toward Li metal, and inhomogeneous Li+ flux at the interfaces. Therefore, many researchers have devoted themselves to solve these problems. For a better understanding on the current issues and recent advances, this article provides (1) a review on various solid electrolytes with high Li+ conductivity and their interfacial issues in SSLMBs, and (2) recent progress in stabilization of the interface between the Li node and solid electrolytes, including an electrolyte modification (e.g., composition, additives) and introduction of an interlayer.

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Recent progress in poly(ethylene oxide)‐based solid‐state electrolytes for lithium‐ion batteries

Cited by 8 publications

References 76 publications

Cyclic Ammonium-Based Polyester Ionenes: Chemical Structures and Properties for Electrochemical Applications

Cyclic Ammonium-Based Polyester Ionenes: Chemical Structures and Properties for Electrochemical Applications

Covalently attached phosphonic acid‐Si₂O₃‐PEO polymer membranes for PEMFC applications

Interfacial challenges and recent advances of solid‐state lithium metal batteries

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Recent progress in poly(ethylene oxide)‐based solid‐state electrolytes for lithium‐ion batteries

Cited by 8 publications

References 76 publications

Cyclic Ammonium-Based Polyester Ionenes: Chemical Structures and Properties for Electrochemical Applications

Cyclic Ammonium-Based Polyester Ionenes: Chemical Structures and Properties for Electrochemical Applications

Covalently attached phosphonic acid‐Si2O3‐PEO polymer membranes for PEMFC applications

Interfacial challenges and recent advances of solid‐state lithium metal batteries

Contact Info

Product

Resources

About

Covalently attached phosphonic acid‐Si₂O₃‐PEO polymer membranes for PEMFC applications