In ordertoimprovethe dischargecapacity of Ti2 Ni hydrogen storage alloy, the phases and effecton the property for Ti Nialloy with alittle La( La contentisbetween 5 25 wt% and12 62 wt%) were investigated in this pa...In ordertoimprovethe dischargecapacity of Ti2 Ni hydrogen storage alloy, the phases and effecton the property for Ti Nialloy with alittle La( La contentisbetween 5 25 wt% and12 62 wt%) were investigated in this paper. It is found that La exists in the form ofLaNi5 ,thesecond phase,in Ti Nialloy when La> 8 wt% . LaNi5 phasecaneffectivelyim provethe activity property and discharge capacity of Ti Ni alloy. While the soluble Ti inmain phase Ti2 Niisadverseto hydrogen adsorption desorption cycle and itshould be dimin ished .展开更多
La Ni based alloy powders used for Ni metal hydride batteries were synthesized by mechanical alloying starting from the elements. The electrical capacity obtained was up to 320 mAh/g. In addition, the comparison in ...La Ni based alloy powders used for Ni metal hydride batteries were synthesized by mechanical alloying starting from the elements. The electrical capacity obtained was up to 320 mAh/g. In addition, the comparison in the microstructure and electrochemical properties was made between the alloy powders produced by mechanical alloying and by melting. It was shown that mechanical alloying is promising in the preparation of practical RE hydrogen storage electrode materials.展开更多
The Ti0.9Zr0.1V0.2Ni1.5La0.5 alloy samples were synthesized by melt-spinning technique at the different wheel velocity （cooling rate）, and the structure and electrochenfical hydrogen storage properties were investig...The Ti0.9Zr0.1V0.2Ni1.5La0.5 alloy samples were synthesized by melt-spinning technique at the different wheel velocity （cooling rate）, and the structure and electrochenfical hydrogen storage properties were investigated. The result indicated that the structure of the melt-spun ribbons mainly contains C14 Laves phase and V-based solid solution phase. The discharge capacity, cyclic stability, high-rate discharge ability and electrochemical kinetic of the alloy electrodes are correlated with the cooling rate （wheel velocity）, and the maximum discharge capacity is over 200 mA.h/g at the wheel velocity of 20 m/s.展开更多
文摘In ordertoimprovethe dischargecapacity of Ti2 Ni hydrogen storage alloy, the phases and effecton the property for Ti Nialloy with alittle La( La contentisbetween 5 25 wt% and12 62 wt%) were investigated in this paper. It is found that La exists in the form ofLaNi5 ,thesecond phase,in Ti Nialloy when La> 8 wt% . LaNi5 phasecaneffectivelyim provethe activity property and discharge capacity of Ti Ni alloy. While the soluble Ti inmain phase Ti2 Niisadverseto hydrogen adsorption desorption cycle and itshould be dimin ished .
文摘La Ni based alloy powders used for Ni metal hydride batteries were synthesized by mechanical alloying starting from the elements. The electrical capacity obtained was up to 320 mAh/g. In addition, the comparison in the microstructure and electrochemical properties was made between the alloy powders produced by mechanical alloying and by melting. It was shown that mechanical alloying is promising in the preparation of practical RE hydrogen storage electrode materials.
基金Acknowledgements This work was supported by the Key Laboratory of Preparation and Applications of Environmental Friendly Materials （Ministry of Education） and the Foundation for Innovative Research Groups of the National Natural Science Foundation of China （Grant No. 20921002）.
文摘The Ti0.9Zr0.1V0.2Ni1.5La0.5 alloy samples were synthesized by melt-spinning technique at the different wheel velocity （cooling rate）, and the structure and electrochenfical hydrogen storage properties were investigated. The result indicated that the structure of the melt-spun ribbons mainly contains C14 Laves phase and V-based solid solution phase. The discharge capacity, cyclic stability, high-rate discharge ability and electrochemical kinetic of the alloy electrodes are correlated with the cooling rate （wheel velocity）, and the maximum discharge capacity is over 200 mA.h/g at the wheel velocity of 20 m/s.
