Sintering and Electrochemical Properties of Hydrogen Storage Alloys in the System Mg-Ni
We synthesized ceramic-type Mg2Ni alloys (hydrogen storage alloy) by sintering at high temperature in Ar atmosphere and applied the sintered materials to the anode of the metal hydride batteries. As a result, it was found that the samples were obtained as sintered alloys, mainly composed of hexagonal phase with a little MgO. The discharge capacity of the sintered sample was more than 150 mAhg-1 on the 1st cycle. It decreased to lower than 50 mAhg-1 after a few cycles, but the capacity was maintained over 20 cycles. The cycling capacity retention is due to the packed fusion of the alloy particles by sintering, which denotes a good effect of sintering method to prepare alloy materials.
Yuriy Verbovytskyy and António Pereira Gonçalves
T. Esaka and E. Nanbu, "Sintering and Electrochemical Properties of Hydrogen Storage Alloys in the System Mg-Ni", Solid State Phenomena, Vol. 194, pp. 245-248, 2013