SiO2 ceramic nanoporous substrate-reinforced sulfonated poly(arylene ether sulfone) composite membranes for proton exchange membrane fuel cells

Seol, Jong Heon; Won, Ji Hye; Yoon, Kyung Suk; Hong, Young Taik; Lee, Sang Young

doi:10.1016/j.ijhydene.2011.06.085

Cited by 33 publications

(6 citation statements)

References 45 publications

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“…There are hardly any granular-like structures in Sample C when the sputtering pressure is the lowest which is as expected. A highly granular-like microstructure is capable of absorbing water molecules and desirable for proton conduction 38 , 39 . The absorbed water molecules may be ionised into H + and OH − .…”

Section: Resultsmentioning

confidence: 99%

A Sputtered Silicon Oxide Electrolyte for High-Performance Thin-Film Transistors

Zhang

Cai

et al. 2017

Sci Rep

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Low operating voltages have been long desired for thin-film transistors (TFTs). However, it is still challenging to realise 1-V operation by using conventional dielectrics due to their low gate capacitances and low breakdown voltages. Recently, electric double layers (EDLs) have been regarded as a promising candidate for low-power electronics due to their high capacitance. In this work, we present the first sputtered SiO2 solid-state electrolyte. In order to demonstrate EDL behaviour, a sputtered 200 nm-thick SiO2 electrolyte was incorporated into InGaZnO TFTs as the gate dielectric. The devices exhibited an operating voltage of 1 V, a threshold voltage of 0.06 V, a subthreshold swing of 83 mV dec−1 and an on/off ratio higher than 105. The specific capacitance was 0.45 µF cm−2 at 20 Hz, which is around 26 times higher than the value obtained from thermally oxidised SiO2 films with the same thickness. Analysis of the microstructure and mass density of the sputtered SiO2 films under different deposition conditions indicates that such high capacitance might be attributed to mobile protons donated by atmospheric water. The InGaZnO TFTs with the optimised SiO2 electrolyte also showed good air stability. This work provides a new pathway to the realisation of high-yield low-power electronics.

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Section: Resultsmentioning

confidence: 99%

A Sputtered Silicon Oxide Electrolyte for High-Performance Thin-Film Transistors

Zhang

Cai

et al. 2017

Sci Rep

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“…This indicates that nanogranular SiO 2 solid electrolyte fabricated at room temperature by PECVD method features the micro pore structure, which is desirable for proton conduction. 11,12 The important advantages of this micro pore structure include that it can provide a larger specific surface area and that it can be capable of adsorbing many water molecules, which will take place capillary condensation effect in the micro pores, 13 even make it like a pondlet. 14,15 The measured serial capacitance and phase angle as a function of the frequency of the applied voltage (0.2 V) for a capacitor based on nanogranular SiO 2 solid electrolyte are shown in Figure 2.…”

Section: Resultsmentioning

confidence: 99%

Effects of humidity on performance of electric-double-layer oxide-based thin-film transistors gated by nanogranular SiO2 solid electrolyte

Yang

Zhu

et al. 2013

AIP Advances

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Electric-double-layer oxide-based thin-film transistors gated by nanogranular SiO2 solid electrolyte have been fabricated at room temperature. The effects of humidity on performances are investigated. At the relative humidity of 65 %, the measured capacitance is 10 μF/cm2, and the device shows Ion/off ratio of 8.93 × 107, field-effect mobility of 5.9 cm2/Vs. As relative humidity declines, the measured capacitance decreases, which gives rise to the degradation in performance. Especially, at the relative humidity of 0 %, the capacitance of 0.01 μF/cm2 is measured, so the device cannot be turned off. The reason may be that humidity can promote H2O molecules to permeate into solid electrolyte, which can cause charges accumulation

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“…The preparation of composite hybrid IEMs using inorganic porous substrates, such as silica ceramic substrate, was also reported [18][19][20] to benefit from the thermal, chemical and ionizing radiation resistance of the inorganic materials for the applications of ED process in highly hostile environments [21,22]. Defects such as gaps or even micro-pores across the composite membranes or at the interface between the IEX and the support may, however, greatly affect the IEMs perm-selectivity and ion conductivity [23,24].…”

Section: Introductionmentioning

confidence: 89%

Investigation of hybrid ion-exchange membranes reinforced with non-woven metal meshes for electro-dialysis applications

Allioux

She

et al. 2015

Separation and Purification Technology

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SiO2 ceramic nanoporous substrate-reinforced sulfonated poly(arylene ether sulfone) composite membranes for proton exchange membrane fuel cells

Cited by 33 publications

References 45 publications

A Sputtered Silicon Oxide Electrolyte for High-Performance Thin-Film Transistors

A Sputtered Silicon Oxide Electrolyte for High-Performance Thin-Film Transistors

Effects of humidity on performance of electric-double-layer oxide-based thin-film transistors gated by nanogranular SiO2 solid electrolyte

Investigation of hybrid ion-exchange membranes reinforced with non-woven metal meshes for electro-dialysis applications

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