Single-particle investigation on the activation process of a hydrogen storage alloy

Using an improved apparatus to investigate the activation process of single particles of hydrogen storage alloy LaNi_3.55Co_0.75Mn_0.4Al_0.3, we directly showed the particle's morphology changes during the activation process. Electrochemical properties were systematically monitored during the activation process of the single particles. We finally proposed a new parameter – normalized output rate (NOR) – to evaluate the output performance of the electrode material. In addition to revealing what occurred during the activation process, we provided a program for the quick testing of electrode materials.