TY - JOUR
T1 - Effect of Ti substitution on hydrogen storage properties of Zr 1-xTixCo (x = 0, 0.1, 0.2, 0.3) alloys
AU - Zhao, Yamin
AU - Li, Rongfeng
AU - Tang, Ruihe
AU - Li, Boyan
AU - Yu, Ronghai
AU - Liu, Wei
AU - Kou, Huaqin
AU - Meng, Jianbo
PY - 2014/1
Y1 - 2014/1
N2 - Zr1-xTixCo (x = 0, 0.1, 0.2, 0.3) alloys were prepared by arc-melting method and the effect of Ti substitution on hydrogen storage properties was studied systematically. Hydrogen desorption pressure-composition-temperature (PCT) measurements were carried out using Sievert's type volumetric apparatus for ZrCo (at 473 K, 573 K and 673 K) and Zr1-xTixCo alloys (at 673 K), respectively. Products after dehydrogenation were characterized by X-ray diffraction (XRD). In addition, the kinetics of Zr1-xTixCo hydride was investigated at 473 K and 673 K, respectively, under hydrogen pressure of 5 MPa. Results showed that Ti substitution for Zr did not change the crystal structure of ZrCo phase. With the increase of temperature from 473 K to 673 K, the extent of disproportionation for ZrCo alloy increased. With Ti content increasing at 673 K, the desorption equilibrium pressure of Zr1-xTixCo- H2 systems elevated and the disproportionation reaction of Zr 1-xTixCo alloys was inhibited effectively. Ti substitution decreased the kinetics rate and the effective hydrogen storage capacity of Zr1-xTixCo alloys slightly. Generally speaking, it was found that Zr0.8Ti0.2Co alloy had better anti-disproportionation property with less decrease of effective hydrogen storage capacity which was beneficial to tritium application in the International Thermonuclear Experimental Reactor (ITER).
AB - Zr1-xTixCo (x = 0, 0.1, 0.2, 0.3) alloys were prepared by arc-melting method and the effect of Ti substitution on hydrogen storage properties was studied systematically. Hydrogen desorption pressure-composition-temperature (PCT) measurements were carried out using Sievert's type volumetric apparatus for ZrCo (at 473 K, 573 K and 673 K) and Zr1-xTixCo alloys (at 673 K), respectively. Products after dehydrogenation were characterized by X-ray diffraction (XRD). In addition, the kinetics of Zr1-xTixCo hydride was investigated at 473 K and 673 K, respectively, under hydrogen pressure of 5 MPa. Results showed that Ti substitution for Zr did not change the crystal structure of ZrCo phase. With the increase of temperature from 473 K to 673 K, the extent of disproportionation for ZrCo alloy increased. With Ti content increasing at 673 K, the desorption equilibrium pressure of Zr1-xTixCo- H2 systems elevated and the disproportionation reaction of Zr 1-xTixCo alloys was inhibited effectively. Ti substitution decreased the kinetics rate and the effective hydrogen storage capacity of Zr1-xTixCo alloys slightly. Generally speaking, it was found that Zr0.8Ti0.2Co alloy had better anti-disproportionation property with less decrease of effective hydrogen storage capacity which was beneficial to tritium application in the International Thermonuclear Experimental Reactor (ITER).
KW - ZrCo-based alloys Ti substitution hydrogen storage properties anti-disproportionation
UR - https://www.scopus.com/pages/publications/84893245643
U2 - 10.1016/S2095-4956(14)60111-X
DO - 10.1016/S2095-4956(14)60111-X
M3 - 文章
AN - SCOPUS:84893245643
SN - 2095-4956
VL - 23
SP - 9
EP - 14
JO - Journal of Energy Chemistry
JF - Journal of Energy Chemistry
IS - 1
ER -