Influence of hydrogen on a nanocrystalline high-entropy oxide with application potential in hydrogen technologies

被引：3
|
作者：
Domaradzki, Kamil [1 ]
Nowak, Marek [2 ]
Sitarz, Maciej [1 ]
Lapinski, Marcin [3 ]
Brylewski, Tomasz [1 ]
Jurczyk, Mieczyslaw [2 ,4 ]
机构：
[1] AGH Univ Sci & Technol, Fac Mat Sci & Ceram, Al Mickiewicza 30, PL-30059 Krakow, Poland
[2] Poznan Univ Tech, Inst Mat Sci & Engn, Jana Pawla II 24 Str, PL-61138 Poznan, Poland
[3] Gdansk Univ Technol, Inst Nanotechnol & Mat Engn, Gabriela Narutowicza 11-12, PL-80233 Gdansk, Poland
[4] Univ Zielona Gora, Fac Mech Engn, Inst Mat & Biomed Engn, Prof Zygmunta Szafrana 4, PL-65516 Zielona Gora, Poland
来源：
CERAMICS INTERNATIONAL | 2023年 / 49卷 / 10期
关键词：
High-entropy oxide; Rock salt structure; Mechanochemical synthesis; Hydrogen; STORAGE PROPERTIES; EVOLUTION; ALLOY; CO; MICROSTRUCTURE; NANOPARTICLES; CONDUCTIVITY; MICROSTRAIN; RESISTANCE; CATALYSTS;
D O I：
10.1016/j.ceramint.2023.01.142
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The influence of hydrogen on a (Co0.2Cu0.2Mg0.2Ni0.2Zn0.2)O HEO with a rock salt structure was studied. Two forms of this HEO (nanopowder and sinter) were prepared via mechanochemical synthesis (MS) and additional heat treatment, respectively. The chemical stability of the synthesized samples in a pure hydrogen atmosphere was investigated using Sievert's technique. High-pressure hydrogenation at 250 degrees C had no noticeable effect on the HEO sinter. The sintered sample was chemically, structurally, and morphologically stable, as confirmed via the XRD, Raman spectroscopy, SEM, and XPS techniques. Thermogravimetric analysis (TGA) showed the sinter to be stable in an argon gas mixture with 5 vol% of hydrogen and over the temperature range of up to 400 degrees C.
引用
收藏
页码：15544 / 15552
页数：9
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