Influence of temperature on the thickness of ultrathin particulate glass platelets

Kyrgyzbaev, Kanat; Rosin, Andreas; Willert‐Porada, Monika

doi:10.13036/17533546.57.3.001

Cited by 4 publications

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“…Micro glass particles such as MGF are a very recent innovation in glass production. Despite that, they have already gained a broad application spectrum due to their chemically inert properties combined with platelet-like morphology [22,23]. They are most commonly used as reflective and effect pigments in cosmetic applications [24] and as filler material to increase the barrier properties of protective coatings [25].…”

Section: Introductionmentioning

confidence: 99%

Optical and Mechanical Properties of Highly Transparent Glass-Flake Composites

et al. 2019

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In this paper, the dynamic mechanic and optical properties of composites made of Polyvinyl Butyral (PVB) and Micro Glass Flakes (MGF) with matching refractive indices (RIs) are investigated. The composite is produced by a slurry-based process using additional blade casting and lamination. It can be shown that a high degree of ordering of the MGF in the polymer matrix can be achieved with this method. This ordering, combined with the platelet-like structure of the MGF, leads to very efficient strengthening of the PVB with increasing content of the MGF. By carefully adjusting the RIs of the polymer, it is shown that haze is reduced to below 2%, which has not been achieved with irregular fillers or glass fibers.

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Section: Introductionmentioning

confidence: 99%

Optical and Mechanical Properties of Highly Transparent Glass-Flake Composites

et al. 2019

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“…The exact platelet production process as well as the glass platelet morphology is described in previous publications. [31][32][33] In addition, the supplementary information of the article contains a description of the process by means of a schematic illustration in Fig. S1.…”

Section: Methodsmentioning

confidence: 99%

Sodium Borosilicate Glass Separators as an Electrolyte Additive Donor for Improving the Electrochemical Performance of Lithium-Ion Batteries

Schadeck

Hahn

Gerdes

et al. 2019

J. Electrochem. Soc.

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In order to replace today's used electrochemical passive polymer-based lithium-ion battery separators, custom-made ultrathin micrometer-sized glass platelets are being tested as separators. Ions are leached from the glass by hydrofluoric acid (HF), which is typically present in LiPF 6 containing electrolytes. The ions act as an electrolyte additive and show an effect on electrochemical cell parameters with progressing battery cycling. For comparability, different glass compositions are investigated and are compared to a commercial polymer-based separator. The separators are tested in a graphite || lithium iron phosphate full-cell configuration. Charge/discharge tests at different C-rates up to 10C, post-mortem analyses, impedance spectroscopy measurements, and distribution of relaxation times analyses are conducted to analyze the specific influence of the glass composition on cell aging. It is shown that in addition to the positive side effect of HF gettering, the ions from a sodium borosilicate glass cause a modification of the solid electrolyte interphase (SEI) with regard to its conductivity, thus improving the fast-charging capability and cycling stability of the battery cell.

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“…Anisotropic composite membranes were synthesized as follows, beginning with the treatment of the filler material. Glass platelets, as anisotropic additives, were synthesized as described by Kyrgyzbaev et al [41]. To prevent leaching of alkaline ions from the glass into the membrane, the glass platelets were treated in sulfuric acid (96%, Merck KGaA, Darmstadt, Germany) over night and washed several times in deionized water.…”

Section: Materials and Experimental Arrangementmentioning

confidence: 99%

A Novel Method for Humidity-Dependent Through-Plane Impedance Measurement for Proton Conducting Polymer Membranes

et al. 2019

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In this study, we introduce a through-plane electrochemical measurement cell for proton conducting polymer membranes (PEM) with the ability to vary temperature and humidity. Model Nafion and 3M membranes, as well as anisotropic composite membranes, were used to compare through plane and in plane conductivity. Electrochemical impedance spectroscopy (EIS) was applied to evaluate the proton conductivity of bare proton exchange membranes. In the Nyquist plots, all membranes showed a straight line with an angle of 60–70 degrees to the Z’-axis. Equivalent circuit modeling and linear extrapolation of the impedance data were compared to extract the membrane resistance. System and cell parameters such as high frequency inductance, contact resistance and pressure, interfacial capacitance were observed and instrumentally minimized. Material-related effects, such as swelling of the membranes and indentation of the platinum mesh electrodes were examined thoroughly to receive a reliable through-plane conductivity. The received data for model Nafion and 3M membranes were in accordance with literature values for in-plane and through-plane conductivity of membrane electrode assemblies. Anisotropic composite membranes underlined the importance of a sophisticated measurement technique that is able to separate the in-plane and through-plane effects in polymer electrolytes.

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Influence of temperature on the thickness of ultrathin particulate glass platelets

Cited by 4 publications

References 0 publications

Optical and Mechanical Properties of Highly Transparent Glass-Flake Composites

Optical and Mechanical Properties of Highly Transparent Glass-Flake Composites

Sodium Borosilicate Glass Separators as an Electrolyte Additive Donor for Improving the Electrochemical Performance of Lithium-Ion Batteries

A Novel Method for Humidity-Dependent Through-Plane Impedance Measurement for Proton Conducting Polymer Membranes

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