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 LaNi3.55Co0.75Mn0.4Al0.3, 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.