Highly conductive and mechanically robust nanocomposite polymer electrolytes for solid-state electrochemical thin-film devices

Lee, Seung‐Ju; Yang, Hae Min; Cho, Kyung Gook; Seol, Kyoung Hwan; Kim, Sangwon; Hong, Kihyon; Lee, Keun Hyung

doi:10.1016/j.orgel.2018.11.044

Cited by 20 publications

(15 citation statements)

References 64 publications

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“…This result indicates that the presence of the electrolytic components does not interfere with crystallization of the PA6 network. − In addition, crystallinity values of the gels do not change significantly as the composition of the polymer electrolytes varies from 10 to 50 wt %. In comparison, other physical gels based on semicrystalline polymers such as P(VDF-HFP) and PVDF showed larger reductions in melting temperature with increasing IL content. , For example, the melting temperature of the PVDF gel decreased from 146 to 121 °C when the polymer concentration changed from 50 to 10 wt %. The TGA thermograms in Figure S1 show that the PA6 gels are thermally stable, with no chemical decomposition, at temperatures above 300 °C in the investigated concentration range.…”

Section: Resultsmentioning

confidence: 85%

“…To solidify ILs and obtain ion gels, two types of polymer networks, which use either chemical or physical cross-links, have been used. ,− Physically cross-linked ion gels (or physical ion gels) are exceptionally versatile for use in solid-state thin-film devices because diverse solution processes, including spin-coating, lamination, aerosol jet printing, electrohydrodynamic jet printing, ink-jet printing, and transfer printing, are directly applicable. ,,− Physical ion gels were first demonstrated through self-assembly of an ABA triblock copolymer consisting of IL-insoluble A blocks and an IL-soluble B block in 1-butyl-3-methylimidazolium hexafluorophosphate, [BMI][PF 6 ] . Subsequent studies have employed different block copolymers and ILs. ,− Recently, physical ion gels using phase-separated homo-/copolymer crystals as network junctions and amorphous chains swollen by liquid electrolytes as bridging strands have been demonstrated. , For example, poly(vinylidene fluoride- co -hexafluoropropylene) [P(VDF-HFP)] and polyvinylidene fluoride (PVDF) can generate mechanically self-supporting ion gels with high ionic conductivity and specific capacitance. , Practicality of thin-film devices using solid polymer electrolytes can be improved by using polymeric ion gels based on semicrystalline polymer networks because gelation through nucleation, and the growth of the polymer crystals enables the use of a wide variety of semicrystalline polymers as the structuring network and expands the number of monomers and polymers that can be utilized for a broad range of applications. ,,− …”

Section: Introductionmentioning

confidence: 99%

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Thermostable Ion Gels for High-Temperature Operation of Electrolyte-Gated Transistors

Cho

Kim

et al. 2020

ACS Appl. Mater. Interfaces

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High-temperature durability is critical for application of organic materials in electronic devices that operate in harsh environments. In this work, thermostable physically cross-linked polymer electrolytes, or thermostable physical ion gels, were successfully developed using crystallization-induced phase separation of semicrystalline polyamides (PAs) in an ionic liquid (IL). In these ion gels, phase-separated PA crystals act as network junctions and enable the ion gels to maintain their mechanical integrity up to 180 °C. ILs and ion gels are suitable electrolyte candidates for thin-film devices operating at high temperatures because they outperform other electrolytes that use aqueous and organic solvents, owing to their superior thermal stability and nonvolatility. In addition to thermal stability, the PA gels exhibited high ionic conductivity (∼1 mS/cm) and specific capacitance (∼10 μF/cm2) at room temperature; these values increased significantly with increasing temperature, while the gel retained its solid-state mechanical integrity. These thermostable ion gels were successfully used as an electrolyte gate dielectric in organic thin-film transistors that operate at high temperatures (ca. 150 °C) and low voltages (<1 V). The transistors gated with the dielectrics had a high on/off current ratio of (3.04 ± 0.24) × 105 and a hole mobility of 2.83 ± 0.20 cm2/V·s. By contrast, conventional physical ion gels based on semicrystalline polymers of poly(vinylidene fluoride-co-hexafluoropropylene) and polyvinylidene fluoride lost their mechanical integrity and dewetted from a semiconductor channel at lower temperatures. Therefore, these results demonstrate an effective method of generating thermally stable, mechanically robust, and highly conductive solid polymer electrolytes for electronic and electrochemical devices operating in a wide temperature range.

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Section: Resultsmentioning

confidence: 85%

Section: Introductionmentioning

confidence: 99%

Thermostable Ion Gels for High-Temperature Operation of Electrolyte-Gated Transistors

Cho

Kim

et al. 2020

ACS Appl. Mater. Interfaces

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“…It can be seen that the peak at 2θ ≈ 20°is still discernible for the samples. The XRD pattern of PVDF can be indexed to that of α-phase PVDF; 18 with the introduction of TEGDME and Mg(CF 3 SO 3 ) 2 salt, the diffraction profiles of the films became broader, which suggest a decrease in crystallinity.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

Dual Polymer/Liquid Electrolyte with BaTiO₃ Electrode for Magnesium Batteries

Sheha

Liu

Wang

et al. 2020

ACS Appl. Energy Mater.

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With a low cost and high volumetric capacity, rechargeable magnesium batteries (RMBs) have emerged as promising candidates for post-lithium ion batteries. The kinetically sluggish Mg 2+ insertion/ extraction in the host lattice and the anode/electrolyte incompatibility render the battery irreversible in some instances and restrict the commercial applications. In this work, we replace the conventional electrolyte with a dual layer of liquid and polymer electrolyte onto the cathode and anode, respectively, and investigate the structural, electrical, and electrochemical properties. It exhibits a remarkable Mg-ion conductivity up to 4.62 × 10 −4 S cm −1 at 55 °C, a high transfer number (t Mg 2+ = 0.74), low overpotential, and relatively stable Mg stripping and plating during the initial cycles. Furthermore, this work uses an unconventional electrode, BaTiO 3 (BTO), to demonstrate the performance of Mg batteries and track the structural and electrochemical changes. The quasi-solid-state Mg batteries fabricated with premagnesiation and thermally treated BTO cathode materials show good electrochemical performance. The approaches herein may provide new directions for exploiting high-performance Mg batteries through the perovskite structure cathode and functional dual electrolyte.

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“…The salient feature of the MIL-53 structure is the inorganic M-OH chains interlinked via the organic terephthalate species, resulting in a framework having regularly spaced one-dimensional diamondshaped pores, which are conducive for ion-adsorption during cycling. 27 While there are a plethora of independent reports on the use of proton-(H 2 SO 4 ) 28 hydroxyl ion-(KOH), 29 lithium ion-(LiCF 3 SO 3 ), 30 sodium ion-(NaClO 4 ), 31 potassium ion-(K 2 SO 4 or KCl), 32,33 and ionic liquid (IL) cation or anion (1-ethyl-3-methyl-imidazolium bis(trifluoromethylsulfonyl)imide- 34,35 conducting liquid and gel electrolytes for supercapacitors, a consolidated study on the influence of the electrolyte cation/anion on supercapacitor performance parameters remains elusive. As a rule of thumb, the broad criteria of high ionic conductivity (preferably >10 −3 S cm −1 ), a wide electrochemical potential stability window (preferably >1 V), broad thermal stability range from −10 to +60 °C or better, good chemical stability, and low vapor pressure are typically taken into consideration for the electrolyte.…”

Section: ■ Introductionmentioning

confidence: 99%

Cost-Effective MIL-53(Cr) Metal–Organic Framework-Based Supercapacitors Encompassing Fast-Ion (Li⁺/H⁺/Na⁺) Conductors

Ojha

Deepa

2021

ACS Appl. Energy Mater.

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A chromium-based low-cost metal−organic framework (MOF) cathode, MIL (Mateŕiaux de l′Institut Lavoisier)-53(Cr), is coupled with a bioderived porous carbon (BPC) anode, produced from abundantly available agricultural waste betel nut shells in an asymmetric supercapacitor, for the first time. The impact of the electrolyte on the electrochemical behavior of an asymmetric BPC//MIL-53(Cr) supercapacitor was assessed by constructing cells with the following electrolytes: proton-conducting camphorsulfonic acid (CSA), Li + -ion-conducting solutions of LiClO 4 , Na + -ion-conducting sodium poly(4-styrene sulfonate) solution, and ionic liquid (IL:1-butyl-1-methyl-pyrrolidinium trifluoromethanesulfonate)-based solutions. The aqueous H + -ion-based CSA electrolyte shows a superior ionic conductivity (270 mS cm −1 ) and an enhanced transport number (0.96), carries larger ionic currents, and retains high conductivity even at subambient temperatures, clearly outperforming all the other Li + /Na + /IL electrolytes. The BPC/aqueous CSA or LiClO 4 /MIL-53(Cr) supercapacitors show enhanced storage performances, with the H + cell having a specific capacitance of 70 F g −1 and energy and power density maxima of 9.7 Wh kg −1 and 0.25 kW kg −1 and enduring 10 4 cycles. A detailed account of the dependence of the electrolyte cation/ anion-and solvent-type on electrochemical charge storage provides a basis for adapting these design principles to developing highperformance MOF-based supercapacitors.

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Highly conductive and mechanically robust nanocomposite polymer electrolytes for solid-state electrochemical thin-film devices

Cited by 20 publications

References 64 publications

Thermostable Ion Gels for High-Temperature Operation of Electrolyte-Gated Transistors

Thermostable Ion Gels for High-Temperature Operation of Electrolyte-Gated Transistors

Dual Polymer/Liquid Electrolyte with BaTiO₃ Electrode for Magnesium Batteries

Cost-Effective MIL-53(Cr) Metal–Organic Framework-Based Supercapacitors Encompassing Fast-Ion (Li⁺/H⁺/Na⁺) Conductors

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Highly conductive and mechanically robust nanocomposite polymer electrolytes for solid-state electrochemical thin-film devices

Cited by 20 publications

References 64 publications

Thermostable Ion Gels for High-Temperature Operation of Electrolyte-Gated Transistors

Thermostable Ion Gels for High-Temperature Operation of Electrolyte-Gated Transistors

Dual Polymer/Liquid Electrolyte with BaTiO3 Electrode for Magnesium Batteries

Cost-Effective MIL-53(Cr) Metal–Organic Framework-Based Supercapacitors Encompassing Fast-Ion (Li+/H+/Na+) Conductors

Contact Info

Product

Resources

About

Dual Polymer/Liquid Electrolyte with BaTiO₃ Electrode for Magnesium Batteries

Cost-Effective MIL-53(Cr) Metal–Organic Framework-Based Supercapacitors Encompassing Fast-Ion (Li⁺/H⁺/Na⁺) Conductors