Comparison of commercial and hydriding-combustion-synthesized Mg-hydride

TY - JOUR

T1 - Comparison of commercial and hydriding-combustion-synthesized Mg-hydride

AU - Chourashiya, M. G.

AU - Yang, Dong Cheol

AU - Kim, Sae Youn

AU - Park, Choong Nyeon

AU - Park, Chan Jin

N1 - Funding Information: This research was financially supported by the Ministry of Education, Science Technology (MEST) and National Research Foundation of Korea (NRF) through the Basic Research Laboratories (BRL) Program ( 2011–0001567 ) and the Human Resource Training Project for Regional Innovation .

PY - 2012/1/1

Y1 - 2012/1/1

N2 - This study employed a fast, simple and cost-effective hydriding combustion synthesis (HCS) to prepare nano/submicron Mg based alloys, which are the most promising solid state hydrogen storage materials owing to their high storage capacity (7.6 wt.%) and highest volumetric density. The microstructural and absorption/desorption kinetic properties of the prepared MgH2 samples were characterized and compared with commercially available MgH2 powders. The detailed BET analysis of the HCS prepared samples showed a higher surface area than that of commercial MgH2, which resulted in better absorption/desorption kinetics. The HCS-prepared MgH2 powder absorbed 6.2 wt.% H2 with a rate of 0.31 wt.%/min, whereas it desorbed at a rate of 0.98 wt.%/min. These results highlight the superiority of the HCS method to prepare MgH2 powders over conventional ingot-metallurgy.

AB - This study employed a fast, simple and cost-effective hydriding combustion synthesis (HCS) to prepare nano/submicron Mg based alloys, which are the most promising solid state hydrogen storage materials owing to their high storage capacity (7.6 wt.%) and highest volumetric density. The microstructural and absorption/desorption kinetic properties of the prepared MgH2 samples were characterized and compared with commercially available MgH2 powders. The detailed BET analysis of the HCS prepared samples showed a higher surface area than that of commercial MgH2, which resulted in better absorption/desorption kinetics. The HCS-prepared MgH2 powder absorbed 6.2 wt.% H2 with a rate of 0.31 wt.%/min, whereas it desorbed at a rate of 0.98 wt.%/min. These results highlight the superiority of the HCS method to prepare MgH2 powders over conventional ingot-metallurgy.

KW - Absorption/desorption kinetics

KW - FESEM

KW - Hydriding combustion

KW - Hydrogen storage

KW - Mg-based alloys

UR - http://www.scopus.com/inward/record.url?scp=80052841541&partnerID=8YFLogxK

U2 - 10.1016/j.matlet.2011.08.008

DO - 10.1016/j.matlet.2011.08.008

M3 - 文章

AN - SCOPUS:80052841541

SN - 0167-577X

VL - 66

SP - 42

EP - 45

JO - Materials Letters

JF - Materials Letters

IS - 1

ER -