Characterisation of oxide and hydroxide layers on technical aluminum materials using XPS

Zähr, Julia; Oswald, Steffen; Türpe, M.; Ullrich, H.‐J.; Füssel, Uwe

doi:10.1016/j.vacuum.2011.04.004

Cited by 91 publications

(34 citation statements)

References 8 publications

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“…Following refs. , we refrain from deconvoluting the Al 2p doublet (2p 3/2 and 2p 1/2 ) into an Al–O and Al–OH component with different binding energies. Instead, both components are constrained to the same binding energy and the peak area ratio between the two components is constrained to the value calculated from the analysis of the O 1s peak.…”

Section: Resultsmentioning

confidence: 99%

Sodium Plating from Na‐β″‐Alumina Ceramics at Room Temperature, Paving the Way for Fast‐Charging All‐Solid‐State Batteries

Bay

Wang

Grissa

et al. 2019

Advanced Energy Materials

108

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All‐solid‐state batteries with an alkali metal anode have the potential to achieve high energy density. However, the onset of dendrite formation limits the maximum plating current density across the solid electrolyte and prevents fast charging. It is shown that the maximum plating current density is related to the interfacial resistance between the solid electrolyte and the metal anode. Due to their high ionic conductivity, low electronic conductivity, and stability against sodium metal, Na‐β″‐alumina ceramics are excellent candidates as electrolytes for room‐temperature all‐solid‐state batteries. Here, it is demonstrated that a heat treatment of Na‐β″‐alumina ceramics in argon atmosphere enables an interfacial resistance <10 Ω cm2 and current densities up to 12 mA cm−2 at room temperature. The current density obtained for Na‐β″‐alumina is ten times higher than that measured on a garnet‐type Li7La3Zr2O12 electrolyte under equivalent conditions. X‐ray photoelectron spectroscopy shows that eliminating hydroxyl groups and carbon contaminations at the interface between Na‐β″‐alumina and sodium metal is key to reach such values. By comparing the temperature‐dependent stripping/plating behavior of Na‐β″‐alumina and Li7La3Zr2O12, the role of the alkali metal in governing interface kinetics is discussed. This study provides new insights into dendrite formation and paves the way for fast‐charging all‐solid‐state batteries.

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Section: Resultsmentioning

confidence: 99%

Sodium Plating from Na‐β″‐Alumina Ceramics at Room Temperature, Paving the Way for Fast‐Charging All‐Solid‐State Batteries

Bay

Wang

Grissa

et al. 2019

Advanced Energy Materials

108

View full text Add to dashboard Cite

show abstract

“…XPS has been used previously to show that the oxide film thickness does not differ much with relative humidity, because comparisons between oxide films formed in humid air (40 • C 90% RH) or normal climate (23 • C 50% RH) do not show any difference in oxide thickness (∼4 nm). However, in a condensation atmosphere (23 • C 100% RH) oxide film thickens considerably to ∼6 nm [45]. In aqueous chloride environments it has been shown using XPS that chloride is incorporated into the oxide film on the surface [46], and this will have subsequent effects on the oxide film breakdown and hydrogen entry.…”

Section: The Effect Of Environment On the Scc Velocity In The Peak-agmentioning

confidence: 99%

Some effects of alloy composition on stress corrosion cracking in Al–Zn–Mg–Cu alloys

Knight

Pohl

Holroyd³

et al. 2015

Corrosion Science

124

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“…Note that, in the presence of U-hydroxide, a similar result can be found for an Al alloy surface. 29…”

Section: Resultsmentioning

confidence: 99%

Mechanism of surface uranium hydride formation during corrosion of uranium

Pan

et al. 2019

npj Mater Degrad

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Uranium is widely used in the nuclear industry and it is well known that uranium hydride, UH 3 , forms when uranium is exposed to air. The associated volume change during this transition can cause the surface region to crack, compromising structural integrity. Here, hydriding regions beneath hydride surface craters are studied by secondary ion mass spectroscopy (SIMS) and X-ray photoelectron spectroscopy (XPS). Our results indicate that strain transition regions exist, which are induced by hydrogen with a certain thickness between hydride craters and the uranium bulk. The SIMS and XPS results suggest that hydrogen exists covalently with uranium and oxygen in these transition regions. A micro-scale induction period model based on the transition region and previous hydriding models is developed. Within the so-called micro-scale induction period, hydrogen diffuses and accumulates at particular sites before reaching the critical concentration required to form stoichiometric UH 3 in the transition regions.

show abstract

Characterisation of oxide and hydroxide layers on technical aluminum materials using XPS

Cited by 91 publications

References 8 publications

Sodium Plating from Na‐β″‐Alumina Ceramics at Room Temperature, Paving the Way for Fast‐Charging All‐Solid‐State Batteries

Sodium Plating from Na‐β″‐Alumina Ceramics at Room Temperature, Paving the Way for Fast‐Charging All‐Solid‐State Batteries

Some effects of alloy composition on stress corrosion cracking in Al–Zn–Mg–Cu alloys

Mechanism of surface uranium hydride formation during corrosion of uranium

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