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http://dx.doi.org/10.7316/KHNES.2017.28.1.9

Hydrogen Storage and Release Properties for Compacted Ti-Mn Alloy  

KIM, JONG SEOK (Hydrogen Energy Research Center, Korea Institute of Energy Research)
HAN, WON BI (Hydrogen Energy Research Center, Korea Institute of Energy Research)
CHO, HYUN SUK (Hydrogen Energy Research Center, Korea Institute of Energy Research)
JEONG, MOON SUN (Hydrogen Energy Research Center, Korea Institute of Energy Research)
JEONG, SEONG UK (Hydrogen Energy Research Center, Korea Institute of Energy Research)
CHO, WON CHUL (Hydrogen Energy Research Center, Korea Institute of Energy Research)
KANG, KYOUNG SOO (Hydrogen Energy Research Center, Korea Institute of Energy Research)
KIM, CHANG HEE (Hydrogen Energy Research Center, Korea Institute of Energy Research)
BAE, KI KWANG (Hydrogen Energy Research Center, Korea Institute of Energy Research)
KIM, JONG WON (Hydrogen Energy Research Center, Korea Institute of Energy Research)
PARK, CHU SIK (Hydrogen Energy Research Center, Korea Institute of Energy Research)
Publication Information
Transactions of the Korean hydrogen and new energy society / v.28, no.1, 2017 , pp. 9-16 More about this Journal
Abstract
Hydrogen forms metal hydrides with some metals and alloys leading to solid-state storage under moderate temperature and pressure that gives them the safety advantage over the gas and liquid storage methods. However, it has disadvantages of slow hydrogen adsorption-desorption time and low thermal conductivity. To improve characteristics of metal hydrides, it is important that activation and thermal conductivity of metal hydrides are improved. In this study, we have been investigated hydrogen storage properties of Hydralloy C among Ti-Mn alloys. Also, the characteristics of activation and thermal conductivity of Hydralloy C were enhanced to improve kinetics of hydrogen adsorption-desorption. As physical activation method, PHEM (planetary high energy mill) was performed in Ar or $H_2$ atmosphere. Hydralloy C was also activated by $TiCl_3$ catalyst. To improve thermal conductivity, various types of ENG (expanded natural graphite) were used. The prepared samples were compacted at pressure of 500 bar. As a result, the activation properties of $H_2$ PHEM treated Hydralloy C was better than the other activation methods. Also, the amounts of hydrogen storage showed up to 1.6 wt%. When flake type ENG was added to Hydralloy C, thermal conductivity and hydrogen storage properties were improved.
Keywords
Hydrogen storage; Complex metal hydride; Solid hydrogen storage; Ti-Mn alloy;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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