Evaluation of atomic layer deposited alumina as a protective layer for domestic silver articles: Anti-corrosion test in artificial sweat

Park, Suk Won; Han, Gwon Deok; Choi, Hyung Jong; Prinz, Fritz B.; Shim, Joon Hyung

doi:10.1016/j.apsusc.2018.02.090

Cited by 15 publications

(10 citation statements)

References 28 publications

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“…The sheet resistance variations of MP-20 in simulated artificial sweat had also been measured. The simulated artificial sweat solution was prepared according to the previous reports (20 g L −1 NaCl, 17.5 g L −1 NH 4 Cl, 5 g L −1 acetic acid, and 15 g L −1 lactic acid; pH 4.7) (Park et al, 2018). After five times of soaking in the simulated artificial sweat, there were no significant changes in the sheet resistance of MP-20.…”

Section: Resultsmentioning

confidence: 99%

Breathable and Wearable MXene-Decorated Air-Laid Paper With Superior Folding Endurance and Electromagnetic Interference-Shielding Performances

Liu

Wei

et al. 2019

Front. Mater.

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With the development of electronic information technology, electromagnetic shielding pollution has become a thorny environmental problem. Two-dimensional transition metal carbides/nitrides (MXenes) are regarded as the next-generation material for electromagnetic interference (EMI) shielding due to their excellent electrical conductivity and large specific surface area. Flexible membrane-like MXene-based materials in EMI shielding have received tremendous attention, but very few of them can meet the actual needs of durability, stability, and breathability in daily life. In this article, we chose air-laid paper as a flexible substrate for preparing MXene-decorated composite paper by a simple "dipping and drying" method. This composite paper exhibits a high electrical conductivity of 173.0 S m −1 , a superior EMI shielding efficiency (more than 90% of the electromagnetic waves in X-band), good mechanical flexibility (more than 9.8 × 10 4 times), and breathability. Moreover, the composite paper shows excellent durability after folding or soaking in artificial sweat. Therefore, the as-prepared MXene-decorated composite paper has a promising application in EMI-shielding clothing fields.

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Section: Resultsmentioning

confidence: 99%

Breathable and Wearable MXene-Decorated Air-Laid Paper With Superior Folding Endurance and Electromagnetic Interference-Shielding Performances

Liu

Wei

et al. 2019

Front. Mater.

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“…Figure 5 shows an increase of electrical resistivity with sulfurization time [17,18,19] due to the formation of Ag2S phase having an electrical resistivity 10 6 times higher than that of the Ag phase. The largest increase is obtained when layers have 0.3 and 0.5 µm thickness.…”

Section: Resultsmentioning

confidence: 99%

Sulphur corrosion effect on the electrical performance of silver films elaborated by physical vapor deposition

Perrenot

Pairis

Bourgault

et al. 2019

Vacuum

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Electrical properties of Ag films elaborated by Physical Vapor Deposition (PVD) process has been studied before and after corrosion exposure.We have shown that the minimum thickness of silver to resist to sulphurization atmosphere is one micron with an adherent coating. After a sulfurization time of 600 min, an electrical resistivity increase of only 10 % is obtained for a film with 2 microns in thickness. This value is about 20 % higher than the electrical resistivity of pure silver bulk material.For industrial applications of silver coatings, these results are relevant and demonstrate that PVD is an interesting process compared to the electrochemical ones for which silver thicknesses close to 5 microns are necessarily coated.

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“…Ultra‐high‐purity nitrogen (4 N) was used as the purge gas, and the flow rate was set to 200 sccm during deposition. The purge time was set to 60 s, and the precursor and oxidant pulse times were set to 1 s. The growth rate of ALD Al 2 O 3 was 1.72 Å/cycle, as determined by cross‐sectional scanning electron microscopy (SEM) 31 . Two cycles of ALD of Al 2 O 3 were applied to the SOFC cathode after wet chemical etching.…”

Section: Methodsmentioning

confidence: 99%

Improved strontium segregation suppression of lanthanum strontium cobalt oxide cathode via chemical etching and atomic layer deposition

Kim

Yang

Kwon

et al. 2022

Intl J of Energy Research

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This study was conducted to improve the stability of a high-performance cathode, which plays a crucial role in lowering the operating temperature of solid oxide fuel cells (SOFCs) to below 600 C while retaining its performance. Lanthanum strontium cobalt oxide (LSC) is a representative SOFC cathode material used in the intermediate temperature (IT) region (500 C-600 C). When segregation occurs on the cathode surface during high-temperature fabrication, the initial performance degrades to a certain extent, followed by continuous performance degradation. Herein, we aimed to overcome this degradation through surface modification. Accordingly, an ideal LSC surface composition was achieved by removing the segregated Sr through wet chemical etching of the cathode surface. Further, an atomic layer deposition (ALD) process of less than 1 nm thickness was introduced to prevent further Sr separation and minimize performance degradation. The peak power density of the cell with the modified surface (M-LSC) at 550 C was 509 mW cm À2 , whereas that of the cell with bare LSC was 483 mW cm À2 . Based on the 70-h short-term stability test, the bare LSC showed a degradation of 70 mV, while the M-LSC remained stable with no degradation.

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Evaluation of atomic layer deposited alumina as a protective layer for domestic silver articles: Anti-corrosion test in artificial sweat

Cited by 15 publications

References 28 publications

Breathable and Wearable MXene-Decorated Air-Laid Paper With Superior Folding Endurance and Electromagnetic Interference-Shielding Performances

Breathable and Wearable MXene-Decorated Air-Laid Paper With Superior Folding Endurance and Electromagnetic Interference-Shielding Performances

Sulphur corrosion effect on the electrical performance of silver films elaborated by physical vapor deposition

Improved strontium segregation suppression of lanthanum strontium cobalt oxide cathode via chemical etching and atomic layer deposition

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