Abstract Methods of modifying the surface of Pd–23%Ag alloy films have been developed in order to increase the rate of hydrogen permeability and to produce palladium-containing nanostar and nanoflower type coatings. Modifying coatings have been synthesized by electrolytic deposition at a reduced current density compared to classical methods. Low current densities affect the formation of pentagonally structured surface modifiers. The low deposition rate of Pd and Ag particles on a thin palladium-silver film allows them to line up in clearly defined structures, probably due to the properties of the surfactant used. The methods developed for modifying palladium-containing membranes makes it possible to create palladium nanostructures not only with a well-defined surface structure, but also with morphologies that have never been achieved by other approaches. Modification of the membrane surface makes it possible to measure the permeability in the temperature range up to 100°С. Membranes modified with nanoflower and nanostar type pentagonally branched crystallites show a hydrogen flux of up to 0.008 mol s−1 m−2 and up to 0.01 mol s−1 m−2 at a pressure of 0.3 MPa in the low temperature range (

中文翻译：

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纳米花和纳米星型钯涂层改性对含钯膜低温氢渗透的影响

摘要 为了提高氢渗透率和生产含钯纳米星型和纳米花型涂层，已开发出改性 Pd-23%Ag 合金薄膜表面的方法。与传统方法相比，通过电解沉积在降低的电流密度下合成了改性涂层。低电流密度影响五边形结构表面改性剂的形成。Pd 和 Ag 颗粒在钯银薄膜上的低沉积率使它们能够排列成清晰的结构，这可能是由于所用表面活性剂的特性。为改进含钯膜而开发的方法使创造钯纳米结构成为可能，不仅具有明确的表面结构，但也有其他方法从未实现过的形态。膜表面的改性使得在高达 100°С 的温度范围内测量渗透性成为可能。用纳米花和纳米星型五角支化微晶改性的膜在低温范围内在 0.3 MPa 的压力下显示出高达 0.008 mol s-1 m-2 和高达 0.01 mol s-1 m-2 的氢通量（