Thickness dependent effects of solubility and surface phenomena on the hydrogen transport properties of sputtered Pd77%Ag23% thin film membranes

Vicinanza, Nicla; Svenum, Ingeborg-Helene; Næss, Live Nova; Peters, Thijs; Bredesen, Rune; Borg, A.; Venvik, Hilde J.

doi:10.1016/j.memsci.2014.11.031

Cited by 40 publications

(30 citation statements)

References 65 publications

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“…134 Electroless plating has been extensively used to prepare thin films of PdAg, especially for use in hydrogen purification and catalytic applications. 14,22,28,31,35,[74][75][76][77][78][79][80][81][82][83][84][85][86][87][88][89] Common precursors are commercially available and include complexed Pd 2+ and Ag + salts reduced with reducing agents such as tin (II) salts, formate ions, or hydrazine. 31,53 The main advantage of electroplating and electroless deposition methods are their simplicity, but conversely control over the deposited films is lower than other methods.…”

Section: Electrolytic and Electroless Methodsmentioning

confidence: 99%

“…20 Certain applications may use materials prepared a single manufacturing technique, as the properties essential end use of the material are closely influenced by the preparative route. For example, PdAg thin films for sensor applications are commonly prepared using CVD or PVD, 36,[65][66][67][68][69][70][71][72][73] while those for use in gas separation may use electroless deposition 14,22,28,31,35,[74][75][76][77][78][79][80][81][82][83][84][85][86][87][88][89] or mechanical methods 14,33,85,[92][93][94] though this is not exclusive.…”

Section: Manufacture Of Pd and Ag Alloy Thin Filmsmentioning

confidence: 99%

“…The major application of PdAg thin films is the separation of H2 from other gases. 4,14,20,22,28,31,33,42,51,[76][77][78][79][80][81][82][83][84][85][86][87][88][89][90][91][92]126,135,[193][194][195][196][197][198][199][200][201][202][203][204][205][206][207] This known property can be combined with thermal heterogeneous catalytic activity, either from the film itself or from additional catalysts. These are generally continuous processes, 14,22,28,33,42,[81]…”

Section: 1: H2 Separation and Catalysismentioning

confidence: 99%

“…126 PdAg membranes are often supported on porous supports of either stainless steel or ceramic construction. 14,22,28,31,[74][75][76][77][78][79][80][81][82][83][84][85][86][87][88][89]199,200 Chemical pre-treatment of ceramic supports has been demonstrated to improve membrane-support bonding, 126 though expansion during annealing can result in delamination of the membrane from the support if reactor construction (PdAg membrane internal or external of the support) is not considered. 80 The effect of annealing conditions on permittivity has been extensively studied, and incomplete annealing or segregation of Ag and Pd results in reduced permittivity.…”

Section: 1: H2 Separation and Catalysismentioning

confidence: 99%

“…80 The effect of annealing conditions on permittivity has been extensively studied, and incomplete annealing or segregation of Ag and Pd results in reduced permittivity. 24,208 PdAg films for separation or catalytic purposes are commonly prepared using mechanical methods 8,9,32,84,[90][91][92]202,203 or electroless deposition 14,28,31,[74][75][76][77][78][79][80][81][82][83][84][85][86][87][88][89][199][200] on the aforementioned porous substrates or supports, though PVD can provide greater control over film properties and has found some use in this application. 81,135 Supports allow membranes to be thinner and thus more efficient and cost-effective than self-supporting ones.…”

Section: 1: H2 Separation and Catalysismentioning

confidence: 99%

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Manufacture, Applications, and Opportunities of Thin Film Palladium-Silver (PdAg) Alloys: A Review

Holdsworth¹

2019

Preprint

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The noble metals palladium and silver find use in many high performance applications, and their alloys (PdAg), known for more than sixty years, are industrially important, finding use in many fields including hydrogen purification and separation, numerous facets of catalysis, and in fuel cells. In recent years, interest in these materials has grown significantly, particularly in energy generating applications and due to their performance as solid-state chemical sensors for a range of small molecules. PdAg thin films can be prepared using traditional physical methods such as cold rolling, or more modern and controllable chemical or physical deposition techniques such as electrodeposition or chemical vapour deposition. Despite the wide-reaching uses of PdAg, several recent advancements in materials preparation, such as additive manufacturing, better known as 3-D printing, remain unexplored for this material due to the differing chemistries of the two elements. In this review, we explore the manufacturing methods commonly employed for the preparation of PdAg thin films, the common and niche applications of these materials, and opportunities for the future development of these two aspects, with an emphasis on how preparation of thin films can utilise additive manufacturing approaches.

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Section: Electrolytic and Electroless Methodsmentioning

confidence: 99%

Section: Manufacture Of Pd and Ag Alloy Thin Filmsmentioning

confidence: 99%

Section: 1: H2 Separation and Catalysismentioning

confidence: 99%

Section: 1: H2 Separation and Catalysismentioning

confidence: 99%

Section: 1: H2 Separation and Catalysismentioning

confidence: 99%

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Manufacture, Applications, and Opportunities of Thin Film Palladium-Silver (PdAg) Alloys: A Review

Holdsworth¹

2019

Preprint

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Spin‐Torque Manipulation for Hydrogen Sensing

Haku

Kageyama

et al. 2020

Adv Funct Materials

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External manipulation of spin‐orbit torques (SOTs) promises not only energy‐efficient spin‐orbitronic devices but also versatile applications of spin‐based technologies in diverse fields. However, the external electric‐field control, widely used in semiconductor spintronics, is known to be ineffective in conventional metallic spin‐orbitronic devices due to the very short screening length. Here, an alternative approach to control the SOTs by using gases is shown. It is demonstrated that the spin‐torque generation efficiency of a Pd/Ni81Fe19 bilayer can be reversibly manipulated by the absorption and desorption of H2 gas, which appears concomitantly with the change of the electrical resistance. It is found that compared with the change of the Pd resistance induced by the H2 absorption, the change of the spin‐torque generation efficiency is almost an order of magnitude larger. This result provides a new method to externally manipulate the SOTs and paves a way for developing more sensitive hydrogen sensors based on the spin‐orbitronic technology.

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