Detail publikačního výsledku

HYDROGENATION PROPERTIES OF BALL-MILLED Mg-Ti-C-Zr COMPOSITE

KRÁL, L.; ČERMÁK, J.; ROUPCOVÁ, P.

Originální název

HYDROGENATION PROPERTIES OF BALL-MILLED Mg-Ti-C-Zr COMPOSITE

Anglický název

HYDROGENATION PROPERTIES OF BALL-MILLED Mg-Ti-C-Zr COMPOSITE

Druh

Stať ve sborníku v databázi WoS či Scopus

Originální abstrakt

The hydrogen storage properties of ball-milled Mg-Ti-Zr-C composite (1.8 wt.% Ti, 1.9 wt.% Zr and 0.2 wt.% C) were investigated. It has been previously shown, that the addition of Ti, Zr and C improved its storage properties. This beneficial effect of additives upon hydrogen storage properties can be explained by catalysis by the particles rich in Ti or Zr located on the surface of Mg grains. They provide effective pathways for the hydrogen diffusion into the MgH2. The morphological and microstructural characteristics were investigated by scanning electron microscopy and by X-ray diffraction. The hydrogen sorption was measured by Sieverts method using Setaram PCT-Pro device. In this paper, sorption behaviour of the composite after ball-milling and after aging on the air was compared. The ball-milled composite adsorbed 3.5 wt.% H-2 within 10 min at 623 K. However, hydrogen storage capacity of the composite aged on the air for 7 months remarkably decreased: The aged composite adsorbed within 10 min only 2 wt.% H-2 at 623 K and the sorption capacity decreased from 4.7 wt.% H-2 to 2.1 wt.% H-2.

Anglický abstrakt

The hydrogen storage properties of ball-milled Mg-Ti-Zr-C composite (1.8 wt.% Ti, 1.9 wt.% Zr and 0.2 wt.% C) were investigated. It has been previously shown, that the addition of Ti, Zr and C improved its storage properties. This beneficial effect of additives upon hydrogen storage properties can be explained by catalysis by the particles rich in Ti or Zr located on the surface of Mg grains. They provide effective pathways for the hydrogen diffusion into the MgH2. The morphological and microstructural characteristics were investigated by scanning electron microscopy and by X-ray diffraction. The hydrogen sorption was measured by Sieverts method using Setaram PCT-Pro device. In this paper, sorption behaviour of the composite after ball-milling and after aging on the air was compared. The ball-milled composite adsorbed 3.5 wt.% H-2 within 10 min at 623 K. However, hydrogen storage capacity of the composite aged on the air for 7 months remarkably decreased: The aged composite adsorbed within 10 min only 2 wt.% H-2 at 623 K and the sorption capacity decreased from 4.7 wt.% H-2 to 2.1 wt.% H-2.

Klíčová slova

Hydrides; hydrogen storage; catalysis; hydrogen; Mg-alloys

Klíčová slova v angličtině

Hydrides; hydrogen storage; catalysis; hydrogen; Mg-alloys

Autoři

KRÁL, L.; ČERMÁK, J.; ROUPCOVÁ, P.

Rok RIV

2022

Vydáno

01.01.2016

ISBN

978-80-87294-67-3

Kniha

METAL 2016: 25TH ANNIVERSARY INTERNATIONAL CONFERENCE ON METALLURGY AND MATERIALS

Strany od

1445

Strany do

1449

Strany počet

5

BibTex

@inproceedings{BUT176847,
  author="Lubomír {Král} and Jiří {Čermák} and Pavla {Roupcová}",
  title="HYDROGENATION PROPERTIES OF BALL-MILLED Mg-Ti-C-Zr COMPOSITE",
  booktitle="METAL 2016: 25TH ANNIVERSARY INTERNATIONAL CONFERENCE ON METALLURGY AND MATERIALS",
  year="2016",
  pages="1445--1449",
  isbn="978-80-87294-67-3"
}