Influence of concentration of KOH solution containing 0.02 M borohydride on the kinetic properties of hydrogen storage alloys

1999 ◽  
Vol 293-295 ◽  
pp. 680-683 ◽  
Author(s):  
Hongge Pan ◽  
Yun Chen ◽  
Chunsheng Wang ◽  
Xinhua Wang ◽  
Changpin Chen ◽  
...  
Keyword(s):  
Hydrogen Storage ◽  
Kinetic Properties ◽  
Hydrogen Storage Alloys

Investigation of the thermodynamic and kinetic properties of La–Fe–B system hydrogen-storage alloys

2014 ◽  
Vol 39 (8) ◽  
pp. 3805-3809 ◽  
Author(s):  
W. Xiong ◽  
B.Q. Li ◽  
L. Wang ◽  
J. Li ◽  
F.Q. Kong ◽  
...  
Keyword(s):  
Hydrogen Storage ◽  
Kinetic Properties ◽  
Hydrogen Storage Alloys

Kinetic properties of La2Mg17–x wt.% Ni (x = 0–200) hydrogen storage alloys prepared by ball milling

2014 ◽  
Vol 39 (25) ◽  
pp. 13557-13563 ◽  
Author(s):  
Xia Li ◽  
Tai Yang ◽  
Yanghuan Zhang ◽  
Dongliang Zhao ◽  
Huiping Ren
Keyword(s):  
Hydrogen Storage ◽  
Ball Milling ◽  
Kinetic Properties ◽  
Hydrogen Storage Alloys

Effects of Al on Cycling Stability of a New Rare-Earth Mg-Based Hydrogen Storage Alloy

2005 ◽  
Vol 475-479 ◽  
pp. 2457-2462 ◽  
Author(s):  
Y.F. Liu ◽  
H.G. Pan ◽  
Rui Li ◽  
Y.Q. Lei
Keyword(s):  
Rare Earth ◽  
Oxide Film ◽  
Hydrogen Storage ◽  
Cycling Stability ◽  
Type Structure ◽  
High Rate ◽  
Kinetic Properties ◽  
Hydrogen Storage Alloys ◽  
Al Content ◽  
Discharge Capacities

In order to improve the cycling stability of a new rare-earth Mg-based hydrogen storage alloys, La0.7Mg0.3Ni2.65-xMn0.1Co0.75Alx (x=0.0-0.4) alloys were prepared to investigate the structure and electrochemical properties of these alloys. XRD and Rietveld analyses reveal that the alloys consist of a (La,Mg)Ni3 phase with rhombohedral PuNi3-type structure and a LaNi5 phase with hexagonal CaCu5-type structure. Electrochemical studies on these alloys indicate that their maximum discharge capacities were decreased from 400.7 mAh/g (x=0.0) to 335.6 mAh/g (x=0.4). However, the cycling stability of the alloy electrodes was significantly improved after Ni was partially replaced by Al. After 100 charge/discharge cycles, the discharge capacity retention was increased from 32.0% (x=0.0) to 73.8 % (x=0.3), which can be attributed to the formation of a dense oxide film on the alloy surface. Moreover, the high rate dischargeability measurements indicate that the electrochemical kinetic properties were deteriorated with increasing Al content owing to the presence of a dense oxide film of Al.

Hydrogen Storage Properties of Mg1.7 M0.3 Ni(M=Mg, La, Ce, Nd) Hydrogen Storage Alloys

2012 ◽  
Vol 512-515 ◽  
pp. 1503-1508 ◽  
Author(s):  
Yun Long Li ◽  
Ping Li ◽  
Fu Qiang Zhai ◽  
Wei Na Zhang ◽  
Xuan Hui Qu
Keyword(s):  
Hydrogen Storage ◽  
Vacuum Induction Melting ◽  
Kinetic Properties ◽  
Induction Melting ◽  
X Ray Diffraction ◽  
Hydrogen Storage Alloys ◽  
Helium Atmosphere ◽  
Hydrogen Storage Properties ◽  
Storage Properties ◽  
Activation Behavior

Mg1.7 M0.3 Ni (M = Mg, La, Nd and Ce) alloys were prepared by vacuum induction melting under the high purity helium atmosphere. X-ray diffraction (XRD) and scanning electron microscopy (SEM) were utilized to study the phase structures of tested alloys, and their morphologies and hydrogen storage properties were intensively studied by pressure-composition -temperature (PCT) test. It was found that the Mg-M-Ni(M=Mg, La, Nd and Ce)alloys appeared multiphase structures, and as Nd substituting Mg the Mg-Nd-Ni obtained the optimal activation behavior, plateau characteristics, hydrogen cycling reversibility and kinetic properties.

Effect of CeO$lt;inf$gt;2$lt;/inf$gt;-based Solid Solutions on Hydrogen Storage Kinetic Properties of Mg$lt;inf$gt;2$lt;/inf$gt;Ni Alloy

2014 ◽  
Vol 29 (12) ◽  
pp. 1241
Author(s):  
ZHANG Guo-Fang ◽  
ZHANG Yang-Huan ◽  
LIU Zhuo-Cheng ◽  
XU Jian-Yi ◽  
ZHANG Yin
Keyword(s):  
Hydrogen Storage ◽  
Solid Solutions ◽  
Kinetic Properties ◽  
Ni Alloy
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