TY - JOUR
T1 - Hydrogen storage properties of Ti-Cr-Mn-M (M = V, Fe, Ni, Cu) alloys
AU - Ge, Hong Wei
AU - Wang, Xin Hua
AU - Zhang, Yan
AU - Li, Hui
AU - Chen, Li Xin
AU - Li, Shou Quan
AU - Yan, Mi
AU - Chen, Chang Pin
PY - 2009/3
Y1 - 2009/3
N2 - In order to improve the hydrogen storage properties of Ti (Cr-Mn)2 alloys, over stoichiometry of A side and partial substitution of Mn by transition metals were adopted, and the hydrogen storage properties of Tix (Cr-Mn-M)2 (x = 1.0, 1.1; M = V, Fe, Ni, Cu) alloys were investigated. The experimental results showed that the alloys after partial substitution of Mn by V, Fe, Ni, Cu remain C14 laves phase structure, but their cell volume increase. After alloying with V, Fe, Ni and Cu, the activation properties of the alloys are improved remarkably, the hydrogen storage capacities increase, and the hydriding/dehydriding pressure hysteresis decrease. Alloying with Fe leads to increase of dehydriding pressure, while alloying with V, Ni and Cu leads to decrease of hydriding/dehydriding pressure, this is due to the increase of cell volume. The hydrogen absorption and desorption capacities of Ti1.1Cr1.2Mn0.5Cu0.3 reach 1.95wt% and 1.72wt%, respectively. Using this alloy a metal hydride hybrid high-pressure hydrogen storage vessel with working pressure of 40 MPa was composed and its hydrogen storage density was calculated. When the volume fraction of hydrogen storage alloy reaches 0.20, the volumetric hydrogen storage density of this hybrid hydrogen storage vessel by more increases than 57%.
AB - In order to improve the hydrogen storage properties of Ti (Cr-Mn)2 alloys, over stoichiometry of A side and partial substitution of Mn by transition metals were adopted, and the hydrogen storage properties of Tix (Cr-Mn-M)2 (x = 1.0, 1.1; M = V, Fe, Ni, Cu) alloys were investigated. The experimental results showed that the alloys after partial substitution of Mn by V, Fe, Ni, Cu remain C14 laves phase structure, but their cell volume increase. After alloying with V, Fe, Ni and Cu, the activation properties of the alloys are improved remarkably, the hydrogen storage capacities increase, and the hydriding/dehydriding pressure hysteresis decrease. Alloying with Fe leads to increase of dehydriding pressure, while alloying with V, Ni and Cu leads to decrease of hydriding/dehydriding pressure, this is due to the increase of cell volume. The hydrogen absorption and desorption capacities of Ti1.1Cr1.2Mn0.5Cu0.3 reach 1.95wt% and 1.72wt%, respectively. Using this alloy a metal hydride hybrid high-pressure hydrogen storage vessel with working pressure of 40 MPa was composed and its hydrogen storage density was calculated. When the volume fraction of hydrogen storage alloy reaches 0.20, the volumetric hydrogen storage density of this hybrid hydrogen storage vessel by more increases than 57%.
KW - High-pressure hydrogen
KW - Hydrogen storage alloys
KW - Hydrogen storage vessel
KW - Metal hydride
UR - http://www.scopus.com/inward/record.url?scp=64049113978&partnerID=8YFLogxK
M3 - ???researchoutput.researchoutputtypes.contributiontojournal.article???
AN - SCOPUS:64049113978
SN - 1001-9731
VL - 40
SP - 420
EP - 423
JO - Gongneng Cailiao/Journal of Functional Materials
JF - Gongneng Cailiao/Journal of Functional Materials
IS - 3
ER -