Glass based hydrogen barriers

玻璃基氢屏障

• 批准号: 192281186
• 负责人: Professor Dr.-Ing. Joachim Deubener
• 金额: --
• 依托单位: Institut für Nichtmetallische Werkstoffe
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2011
• 资助国家: 德国
• 起止时间: 2010-12-31 至 2018-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/192281186?language=en
• 关键词: Glass; based; hydrogen; barriers

Glass containers for long term H2 storage, as for mobile electronic devices and off-grid systems, rely on chemically durable glasses of easy workability and low H2 permeability (< 10-20 mol s-1 Pa-1 m-1 @ 200C). The development of such glasses is still difficult due the lack of correlations between basic glass structure parameters and H2 permeation proved by systematic experimental investigations. During the first stage of our project, we could show that H2 permeation is governed by two factors independently: the atomic packing density (ionic porosity) and the topology of the glass network. The applied second stage of the project should therefore focus on the variation of atomic packing density of a given glass network topology by means of chemical strengthening (alkaline exchange), controlled cooling (fictive temperature) and Ar pressure treatments (mixed gas effects). Although promising basic insights into the structural mechanism of H2 permeation in glass, such phenomena have not been addressed so far. The EGA powder method refined during the first project stage allows measuring the required very low H2 permeability data. The results intended herewith offer essential contributions to the development of efficient H2 storage devices or protection barriers and will improve the basic understanding of related structural mechanisms in glasses.

用于长期H2存储的玻璃容器，与移动电子设备和离网系统一样，依赖化学耐用的易于可工程性和低H2渗透性的玻璃（<10-20 mol S-1 PA-1 M-1 @ 200C）。 由于系统的实验研究证明了基本玻璃结构参数与H2渗透之间缺乏相关性，因此仍然很难开发此类眼镜。在项目的第一阶段，我们可以证明H2渗透由两个因素支配：原子堆积密度（离子孔隙率）和玻璃网络的拓扑结构。因此，项目的第二阶段应着重于给定玻璃网络拓扑的原子堆积密度的变化（碱性交换），受控冷却（虚拟温度）和AR压力处理（混合气体效应）。尽管对玻璃中H2渗透的结构机制有希望的基本见解，但到目前为止，这种现象尚未得到解决。在第一个项目阶段进行的EGA粉末方法允许测量所需的非常低的H2渗透率数据。旨在的结果为有效的H2存储设备或保护障碍提供了基本贡献，并将改善对眼镜中相关结构机制的基本理解。

项目成果

Hydrogen permeability of a barium-aluminoborosilicate glass—A methodical approach

钡铝硼硅酸盐玻璃的氢渗透率——一种有条理的方法

• DOI: 10.1016/j.jnoncrysol.2014.04.006
• 发表时间: 2014
• 期刊: Journal of Non-crystalline Solids
• 影响因子: 3.5
• 作者: P. Ried;M. Gaber;R. Müller;J. Deubener
• 通讯作者: J. Deubener

Hydrogen diffusivity in sodium aluminosilicate glasses

铝硅酸钠玻璃中的氢扩散率

• DOI: 10.1016/j.jnoncrysol.2019.119502
• 发表时间: 2019
• 期刊: Journal of Non-Crystalline Solids
• 影响因子: 3.5
• 作者: T. Welter;U. Marzok;J. Deubener;S. Reinsch;R. Müller
• 通讯作者: R. Müller